PROCESS AUTOMATION N

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Manufacturing Excellence Since 1931

CT-PA-C

PROCESS AUTOMATION
PRODUCT APPLICATIONS & SELECTION GUIDES
Pressure | Temperature | Test & Data | Air Quality
Flow | Level | Process Control | Valves

dwyer-inst.com

USA MADE

The trusted leader in manufacturing innovative instrumentation solutions for the worldwide HVAC and process automation markets

CUSTOMER SATISFACTION
Meet and exceed customer and market expectations
INNOVATIVE
Sustained R&D and product development
COMPETITIVE
Highly automated and flexible manufacturing capabilities
TRUSTED
High-quality, reliable, and readily available products and solutions
GLOBAL SUPPORT
Global sales and marketing presence

ESTABLISHED DWYER BRANDS

By Dwyer

By Dwyer

By Dwyer

DWYER AROUND THE GLOBE

CONTACT INFORMATION

CORPORATE HEADQUARTERS DWYER INSTRUMENTS, INC. 102 Indiana Highway 212 P.O. Box 373 Michigan City, IN 46360, U.S.A.
DWYER-INST.COM Phone | (219) 879-8000 Toll-Free | (800) 872-9141 Fax | (219) 872-9057
UNITED KINGDOM DWYER INSTRUMENTS LTD Unit 16, The Wye Estate, London Road High Wycombe, Bucks HP11 1LH-U.K.
DWYER-INST.CO.UK Phone | +44 (0) 1494 461707 Fax | +44 (0) 1494 465102

AUSTRALIA DWYER INSTRUMENTS, PTY. LTD. Unit 1, 11 Waverley Drive P.O. Box 359 Unanderra, NSW 2526 Australia
DWYER-INST.COM.AU Phone | +61 (0) 2 4272 2055 Fax | +61 (0) 2 4272 4055
HONG KONG DWYER INSTRUMENTS HK, LTD. Unit 605A, 6/F, Shui Hing Centre 13 Sheung Yuet Road, Kowloon Bay, Hong Kong
DWYER-INST.COM.HK Phone | +852-23181007 Fax | +852-27561565

OTHER CONTACTS
ORDERS orders@dwyermail.com
TECHNICAL SUPPORT tech@dwyermail.com
LITERATURE REQUESTS lit@dwyermail.com
QUOTATION/BID REQUESTS quotes@dwyermail.com
GENERAL INFORMATION info@dwyermail.com

INTERNATIONAL CUSTOMERS Dwyer has local distributors in over 79 countries. Contact the office of your country or contact the corporate headquarters to find your local distributor. You can also go to our website at the following address to be contacted by your local distributor: dwyer-inst.com/Distributor

DWYER INSTRUMENTS, INC. | dwyer-inst.com I

ABOUT US
Since the company was founded in 1931, customers have come to recognize Dwyer Instruments, Inc. to stand for quality, reliability, and readily available competitively priced products. As a leading manufacturer in the controls and instrumentation industry, we continue to grow and serve major markets including, but not limited to: HVAC, chemical, agriculture, food, oil and gas, water, wastewater, powder and bulk, and pollution control. Dwyer holds over 650 technical patents and that number grows every year. We are an enthusiastic group of people headquartered in Michigan City, Indiana, with satellite locations around the globe. We take great pride in the intellect and integrity of our employees, who are passionate about the work we do, the products we develop, and the industries we serve.
MANUFACTURING EXCELLENCE
At Dwyer, it all starts with commitment to meeting the needs of our customers. We strive to make dependable, easy-to-use products. With nearly 90 years of manufacturing expertise, we stand behind our high quality products. Dwyer products are trusted in applications all over the world in nearly every industry.
MANUFACTURING & DESIGN CENTER LOCATIONS
II DWYER INSTRUMENTS, INC. | dwyer-inst.com

OUR PEOPLE MAKE THE DIFFERENCE
CUSTOMER SERVICE
CUSTOMER CARE Courteous and professional customer service representatives are available via phone and email to process and provide assistance with your order. Dwyer provides industry leading response time to answer your call quickly without waiting. PRICING Contact us for formal quotes. Dwyer offers bids and project quotes. Discounts are available for particular customer types based on quantities purchased.
PRODUCT DELIVERY
LARGEINVENTORY LOCATED CENTRALLY INTHEU.S.A. Dwyer is committed to process and ship your order as quickly as possible, with more than 5,000 items stocked in our South Bend, Indiana warehouse. In most cases lead time is less than one week for non-stocked products. FASTPROCESSING&PACKING Our dedicated shipping staff packs and ships your order same day on stocked items ordered before 1:00 PMU.S. Eastern Time. FLEXIBLESHIPPING Dwyer offers blanket orders for OEMs to schedule out your product shipments for when you need them.Contact us for details.
TECHNICAL SUPPORT
All of our technical sales staff members are degreed engineers trained to be product and industry experts. We listen to your needs and get you the answers you want quickly. WE HELP YOU FIND A SOLUTION · Product Selection · Application Assistance · Regulatory and Agency Approval Compliance · Installation Guidance · Maintenance and Repair · Product Customization for OEMs
TO CONTACT AN APPLICATIONS ENGINEER PHONE: (219) 879-8000 | FAX: (219) 872-9057 | EMAIL: tech@dwyermail.com
DWYER INSTRUMENTS, INC. | dwyer-inst.com III

DWYER-INST.COM
DWYER ONLINE
WEBSITE FEATURES · Product Search · Free Literature ­ Catalogs, Brochures, and Product Selection Guides · Product Application and Technical Guides · Digital Catalogs · Dedicated Support Product Pages · Video Library PRODUCT PAGE FEATURES · Easy Online Ordering · Product Support Library ­ Instruction Manuals, Catalog Pages, and Data Sheets · Product Configurator ­ Customize a Dwyer product to your specific application needs · Agency Approval Certificates ­ CE, IECEx, FM, UL, CSA and ATEX · Instructional and Informational Videos · Product Drawings and Photography
DWYER CATALOG APP Browse the Dwyer catalog online or download it for instant access offline. The Dwyer Catalog App is available in the iTunes® and Google PlayTM stores.
IV DWYER INSTRUMENTS, INC. | dwyer-inst.com

CONNECT WITH US
WWW.DWYER-INST.COM/SOCIAL
Dwyer Instruments, Inc. is active on multiple social media platforms so you can stay connected with us throughout the year. Follow us on Facebook, LinkedIn, and Twitter so you're always up to date on new products and services, and learn about our company as a whole. In addition, the Dwyer blog is updated weekly with articles written by our team of experts. These articles will help to give you a better understanding of the various industries we serve, while allowing you to gain in-depth knowledge of application case studies and helpful tips for Dwyer products.
SPECIAL MODELS FOR OEM REQUIREMENTS
Special instrument designs can be supplied to meet a wide range of OEM requirements and specific application needs. Custom scales and private brand identification can easily be furnished. These include: chrome or specially painted bezels, special membranes, special ranges and calibrations, dual scales, reflective scales, special cleaning and OEM identification. For specific information please contact our customer service department at 219-879-8000.
CUSTOMIZED FOR YOU
OFFERED IN A WIDE VARIETY OF DESIGNS, FEATURES & SCALES
DWYER INSTRUMENTS, INC. | dwyer-inst.com V

CALIBRATION & REPAIR SERVICES
DEDICATED Dwyer's dedication to quality is unmatched in the industry. We go above and beyond to provide impeccable service paired with quality calibrations.
COMMITTED We understand being without your instrument can cost you money. We are committed to getting you your instrument back as fast as possible.
ACCURATE You can feel confident by sending your equipment back to the original manufacturer.

CALIBRATION CAPABILITIES
ELECTRICAL · Digital Multimeters · Clamp-on Meters · Amp Meters · Volt Meters · Data Loggers · Optical Tachometers
PRESSURE · Magnehelic® Differential Pressure Gage · Absolute Gages · Manometers · Micromanometers · Differential Pressure Gages

VELOCITY & AIR FLOW · SMART Air Hood® Balancing Instrument · Rotating Vane · Anemometer · Ultrasonic Flowmeter · Insertion Flow Transmitter
TEMPERATURE · Controllers · Probes · Transmitters
HUMIDITY · Probes · Transmitters

Our Engineering Laboratory has been accredited by the ANSI National Accreditation Board and meets the requirements of ISO/IEC 17025:2017 for calibration services. See our scope of accreditation for details at http://www.dwyer-inst.com/calibration/scope

VI DWYER INSTRUMENTS, INC. | dwyer-inst.com

CALIBRATION & REPAIR SERVICES

ISO/IEC 17025 ACCREDITED CERTIFICATE OF CALIBRATION

An ISO/IEC 17025 Accredited Certificate of Calibration is available on select products at an additional charge (email accreditedcal@

dwyermail.com for additional information). This certificate is created in our ANAB Accredited Standards Laboratory guaranteeing

the calibration work performed is in agreement with the internationally recognized standards (i.e. ISO/IEC 17025:2017).

Measurement and Test Equipment (M&TE) used in the calibration are traceable to NMI's (such as NIST) and are calibrated regularly

at established intervals. The certificate includes all information regarding M&TE, environmental conditions, procedures used,

data obtained for the unit under test (UUT),

estimated measurement uncertainties

(EMU), test uncertainty ratios (TUR) and

probability of false acceptance (PFA)

(TUR and PFA values are an additional

charge). Pricing and availability varies by product. Additional or customer requested test points during the calibration are an additional charge.

SAMPLE

SAMPLE

CERTIFICATE OF NIST CALIBRATION
A Certificate of NIST Calibration is available for most indicating and transmitting instrumentation products at an additional charge. This certificate is created in our testing lab to NIST traceable test instruments and includes test points with recorded data and the reference standard. Pricing and availability varies by product. Please consult the options listing for the product on the catalog page or see the product on our website for availability.

DWYER INSTRUMENTS, INC. | dwyer-inst.com VII

KEY MARKETS INNOVATION AWARDS

HVAC
· Building Automation · Test Equipment · Critical Environments
(Healthcare, Isolation Rooms, Clean Rooms) · Original Equipment
(Air Handlers, Boilers, Chillers, Cooling Towers) · Valve Automation
PROCESS AUTOMATION
· Water and Wastewater · Pharmaceutical · Agriculture and Livestock · Bulk Handling · Industrial Process · Mining and Heavy Earth Moving · Oil, Gas and Petrochemical · Power · Valve Automation · Semiconductor · Laboratory Equipment

The ACHR News is the leading trade magazine in the heating, ventilating, air conditioning, and refrigeration industries.

Wireless Hydronic Balancing Kit Series 490W

GOLD · HVAC Mobile Meter® Software Test Instrument App · PredictAirTM Application Software · Air Velocity Transmitter | Series AVUL
SILVER · Universal Handheld Test Instrument | Model UHH2 · Wireless Hydronic Balancing Kit | Series 490W · Hydronic Application Software
BRONZE · SMART Air Hood® Balancing Instrument | Series SAH · Hydronic Differential Pressure Manometer | Series 490A · Insertion Electromagnetic Flow Transmitter | Series IEF

VIII DWYER INSTRUMENTS, INC. | dwyer-inst.com

TABLE OF CONTENTS

Product Applications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-XIV
PRESSURE
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 1-14 Differential Pressure Pressure Gages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Bezels  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2 Pressure Gages/Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Low Differential Pressure - Pressure Switches . . . . . . . . . . . . . . . . . . . . 3-6 Low Differential Pressure - Non-Indicating Pressure Transmitters and Transducers  . . . . . . . . . . . . . . . . . . . . . . . . . .  5 Low Differential Pressure - Indicating Pressure Transmitters and Transducers  . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 Wet-Wet Differential Pressure Pressure Transmitters and Transducers  . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 Single Pressure - Pressure Gages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9 High Single Pressure - Indicating Pressure Transmitters and Transducers  . . . . . . . . . . . . . . . . . . . . . . . . . .  9 Digital Single Pressure - Pressure Gages . . . . . . . . . . . . . . . . . . . . . . . .  10 Single Pressure - Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12 High Single Pressure - Non-Indicating Pressure Transmitters and Transducers  . . . . . . . . . . . . . . . . . . . . . . . 13-14
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 15-16
TEMPERATURE
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 17-18 Dial - Thermometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17 Limit Control - Digital Temperature Switches . . . . . . . . . . . . . . . . . . . . . .  17 PID Loop Controllers - Temperature and Process Controllers . . . . . . . . .  18 Heating and Cooling/Refrigeration Control Digital Temperature Switches  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 19-20
TEST & DATA
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 21-24 Digital - Manometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-22 Thermo - Anemometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23 Calibration - Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 25-26
AIR QUALITY
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 27-28 Air Velocity -Transmitters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27 Humidity and Humidity/Temperature - Transmitters . . . . . . . . . . . . . . 27-28 Carbon Monoxide - Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 29-30

FLOW
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 31-37 General Purpose Panel Mount - Flowmeters . . . . . . . . . . . . . . . . . . . . . .  31 Corrosive Media - Flowmeters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31 General Purpose In-Line - Flowmeters  . . . . . . . . . . . . . . . . . . . . . . . . . .  32 Industrial - Flowmeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32 Paddle and Thermal Style - Flow Switches . . . . . . . . . . . . . . . . . . . . . . .  33 Piston Style - Flow Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34 Paddle Wheel/Turbine/Multi-Jet - Flow Transmitters . . . . . . . . . . . . . . . .  35 Flow - Water Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35 Ultrasonic - Flow Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36 Flow - Heat Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36 Electromagnetic, In-line/Insertion - Flow Transmitters . . . . . . . . . . . . . .  37
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 38-40
LEVEL
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 41-44 Liquid - Level Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-42 Bulk - Level Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-44 Submersible - Level Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43 Capacitive, Ultrasonic and Float - Level Transmitters . . . . . . . . . . . . . . .  44
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 45-46
PROCESS CONTROL
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 47-50 Panel Meters - Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-48 Switches and Transformers - Current Sensors . . . . . . . . . . . . . . . . . . 47-48 Power Supplies and Transformers - Power Converters . . . . . . . . . . . . .  49 Powder, Bulk, Dust Collection, and Pneumatic Conveying Sensors Particulate Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49 Dust Collector Pulse Valve Controllers - Timers  . . . . . . . . . . . . . . . . . .  50
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 51-52
VALVES
SELECTION GUIDES .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 53-56 2-Way - Automated Ball Valves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53-54 3-Way - Automated Ball Valves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53 Positioners  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54 Hand Lever - Ball Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55-56 Position Indicators/Switches/Transmitters  . . . . . . . . . . . . . . . . . . . . 55-56
TYPICAL APPLICATIONS .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 57

DWYER INSTRUMENTS, INC. | dwyer-inst.com IX

PRODUCT APPLICATIONS

CONTAINMENT CHAMBER/BOX CLEAN ROOM
X DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRODUCT APPLICATIONS

MIDSTREAM REFINERY/CHEM PLANT DUST COLLECTOR
DWYER INSTRUMENTS, INC. | dwyer-inst.com XI

PRODUCT APPLICATIONS

PUMP SKID CLEAN WATER
XII DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRODUCT APPLICATIONS

WASTEWATER IRRIGATION
DWYER INSTRUMENTS, INC. | dwyer-inst.com XIII

PRODUCT APPLICATIONS

POULTRY/HOG/GREENHOUSES
XIV DWYER INSTRUMENTS, INC. | dwyer-inst.com

STANDARD TERMS & CONDITIONS OF SALE
DWYER INSTRUMENTS, INC. - TERMS AND CONDITIONS OF SALE ­ MARCH 15, 2017 1. Prices and Specifications are subject to change without notice. 2. Shipping dates are approximate. They are dependent upon credit approval and subject to delays beyond our control. 3. Terms: Net 30 days to companies with established credit rating. In the event Buyer fails to fulfill previous terms of payment, or in case Seller shall have any doubt at any time as to
Buyer's financial responsibility, Seller may decline to make further deliveries except upon receipt of cash in advance or other special arrangements. 4. Point and Title: All material is sold EXW Ex Works Dwyer Instruments, Inc. Title to all material sold shall pass to buyer upon delivery by Seller to carrier at shipping point. 5. State and Local Taxes: Any taxes which the Seller may be required to pay or collect upon or with respect to the sale, purchase, delivery, use or consumption of any of the material
covered hereby shall be for the account of the Buyer and shall be added to the purchase price. 6. Special tooling, dies, silk screens and molds acquired specially to produce goods for Buyer remain the property of Dwyer Instruments, Inc., and may not be removed. They will be
maintained in good condition for a minimum period of three years from the date of the original purchase order. 7. Trade Compliance: Buyer acknowledges that the products, software, and technology, including technical information and documents (collectively "Items"), of Dwyer Instruments, Inc.,
are subject to regulation by agencies of the U.S. government including, but not limited to, the U.S. Department of Commerce. Buyer shall comply with the Export Administration Regulations (EAR) and all applicable U.S.laws and regulations regarding the sale, delivery and transfer of said Items. Buyer shall not, without first obtaining the required licenses, authorizations or approvals from the appropriate U.S. government agency; (i) export, re-export, transfer or divert any Item directly or indirectly to any country or national resident thereof, or any person, entity or country that has restrictions imposed upon them by the U.S. government, (ii) engage in, or knowingly sell to any party engaged in activity related to the development, production, use, testing, or maintenance of Weapons of Mass Destruction, including uses related to nuclear, missile, chemical or biological warfare, or (iii) engage in, or knowingly sell to any party engaged in activity related to the development, production, use, or maintenance of any safeguarded or unsafeguarded nuclear fuel facility or components for such facilities. Buyer shall fully cooperate with Seller, without charge, in any official audit or inspection by an authorized agent, official, employee, or accredited representative of the U.S. government. Buyer shall indemnify and hold Seller harmless from, or in connection with, any violation of this Section by Buyer, its employees, consultants, agents, or customers. The obligations, requirements and claims described herein shall survive the expiration of any business relationship with Dwyer Instruments, Inc., including its divisions, subsidiaries and affiliated companies. 8. Distribution: Products sold to any entity located in the U.S. must remain in the U.S. unless a Global Distribution Agreement is in force with said entity. OEM's are excluded from this requirement. Those who violate this term are subject to a reduction of discount, loss of discount, or exclusion from purchasing future products. If you want to be a Global Distributor, please contact your Global Sales Manager in your region. 9. Limited Warranty: The Seller warrants all Dwyer instruments and equipment to be free from defects in workmanship or material under normal use and service for a period of one year from date of shipment. Products qualifying for an extended warranty period will have the extended warranty as expressly indicated on the catalog page, web page, IOM, or will be covered by a specific written agreement that is (i) approved by an officer of Dwyer Instruments, Inc. and (ii) defines the warranty period. If no express statement of extended warranty is made, then the standard 1 year warranty applies. The Extended Limited Warranty only applies to products manufactured after April 1, 2017. The Warranty period extends from the date of shipment to the initial customer and not the project installation date or use.
Specific warranty exclusions include, but are not limited to: · Specific product components not covered by the extended warranty: o Humidity Sensors o Batteries o Electro-Chemical Gas Sensors o Snap Switches o Any component which exceed its normal life cycle o Other Specific items added as required. · Normal or excessive wear and tear is not cause for warranty replacement. · Products not properly maintained, operated, installed, or use in an application not suited for the product. · Modifications, alterations, changes, or additions outside those which are required for normal operation. · Failure to notify Dwyer of any defect within a reasonable time. · Damage which the customer has not taken timely action to minimize or mitigate. · Products on which the labels, markings, nameplates, etc. have been tampered with. · Products which contain broken factory seals or have been tampered with shall void warranty.
Liability under this warranty is limited to repair or replacement EXW Ex Works Dwyer Instruments, Inc. of any parts which prove to be defective within that time or repayment of the purchase price at the Seller's option. All products must be returned to the Seller, transportation prepaid, unless other arrangements have been pre-approved by Seller. All technical advice, recommendations and services are based on technical data and information which the Seller believes to be reliable and are intended for use by persons having skill and knowledge of the business, at their own discretion. In no case is Seller liable beyond replacement of equipment EXW Ex Works Dwyer Instruments, Inc. or the full purchase price. This warranty does not apply if the maximum ratings label is removed or if the instrument or equipment is abused, altered, used at ratings above the maximum specified, or otherwise misused in any way. THIS EXPRESS LIMITED WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER REPRESENTATIONS MADE BY ADVERTISEMENTS OR BY AGENTS AND ALL OTHER WARRANTIES, BOTH EXPRESS AND IMPLIED. THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE FOR GOODS COVERED HEREUNDER.
10. Buyer's Remedies: THE BUYER'S EXCLUSIVE AND SOLE REMEDY ON ACCOUNT OF OR IN RESPECT TO THE FURNISHING OF NON-CONFORMING OR DEFECTIVE MATERIAL SHALL BE TO SECURE REPLACEMENT THEREOF AS AFORESAID. THE SELLER SHALL NOT IN ANY EVENT BE LIABLE FOR THE COST OF ANY LABOR EXPENDED ON ANY SUCH MATERIAL OR FOR ANY SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL DAMAGES TO ANYONE BY REASON OF THE FACT THAT IT SHALL HAVE BEEN NON-CONFORMING OR DEFECTIVE.
11. Acceptance: All orders shall be subject to the terms and conditions contained or referred to in the Seller's quotation, acknowledgment, and to those listed here and to no others whatsoever. By placing an order you accept our terms and conditions. No waiver, alteration or modification of these terms and conditions shall be binding unless in writing and signed by an executive officer of the Seller. All orders are subject to written acceptance by Dwyer Instruments, Inc., Michigan City, Indiana, U.S.A.
DWYER INSTRUMENTS, INC. | dwyer-inst.com XV

SELECTION GUIDE | PRESSURE

DIFFERENTIAL PRESSURE
Pressure Gages

SERIES
Ranges
Service

2000*
-0.05 to 0.2 in w.c. (-10 to 50 Pa) up to 0 to 30
psi (0 to 30 kPa) Air and non-combustible, compatible gases

DM-1000*
0.25 to 100 in w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available)
Air and non-combustible, compatible gases

2-5000*
0.5 in w.c. to 5 psi (125 Pa to 3 kPa)
Air and compatible gases

Wetted Materials Consult factory

Consult factory

Consult factory

Housing

Die cast aluminum case and bezel

Glass filled plastic

Glass filled nylon

Lens

Clear acrylic

N/A

Accuracy

±2 to 4% FS for most models. ±1 to 2% FS with ±1% FS (2% FS for ranges 1 in w.c. and below)

HA option

Pressure Limits

-20 Hg to 15 psig (-0.677 bar to 1.034 bar); MP 2 psi (14 kPa) for 5 in w.c. 11 psi (75 kPa)

option: 35 psig (2.41 bar); HP option: 80 psig for 10 in w.c.

(5.52 bar).

Temperature Limits 20 to 140°F (-6.67 to 60°C)

0 to 140°F (-18 to 60°C)

Process Connection 1/8 female NPT duplicate high and low pressure 1/8 (3 mm) ID tubing

taps

Enclosure Rating N/A

NEMA 4X (IP66)

Clear acrylic ±5% FS 30 psig (2.067 bar)
20 to 120°F (-6.67 to 48.9°C) Barbed for 3/16 ID tubing or 1/8 male NPT N/A

DIFFERENTIAL PRESSURE
Bezels

SERIES
Accessory Material Dimensions Aesthetics/Function Part Sold Separately
Part Number

2000-SS*
Bezel 304 brushed stainless steel 4-3/4 (120.7 mm) OD Tapered brushed/matte SS finish Yes 420141-40

2000-SB*
Bezel 304 stainless steel 4-3/4 (120.7 mm) OD Electro polished Ra 16 Yes 420141-10

2000-CB*
Bezel Chrome plated aluminum 4-3/4 (120.7 mm) OD Chrome finish Yes 420141-00

DH3-SS*/3000MR(S)-SS*/ 605-SS*
Bezel 304 brushed stainless steel 4-3/4 (120.7 mm) OD Tapered brushed/matte SS finish Yes
815999-10

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
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PRESSURE | SELECTION GUIDE

DIFFERENTIAL PRESSURE
Pressure Gages

SERIES
Ranges

4000*
0 to 5 in w.c. up to 0 to 20 psid

PTGD*
5 to 150 psid (0.25 to 10 bar)

PFG2*
5 to 25 psid

Service
Wetted Materials
Housing
Lens Accuracy

Air and compatible gases and oil based liquids
Consult factory
Die cast aluminum with impregnated hard coating N/A ±3% FS (±2% or 4% for certain ranges)

Compatible gases and liquids
Aluminum or 316 SS piston; Buna-N, PTFE, or ceramic magnet seals Aluminum or 316 SS
Acrylic ±2% FS

Liquids/gases compatible with SS, GFN, and fluoropolymer Aluminum mounting block
Glass filled nylon
Polyester ±5% FS

Pressure Limits

-20 Hg to 500 psig (-0.68 to 34.4 bar)

Aluminum: 3000 psi (206 bar); SS: 6000 psi (413 bar)

300 psig (20.7 bar)

Temperature Limits 20 to 200°F (-6.7 to 93.3°C)

N/A

Process Connection 1/4 female NPT duplicate high and low pressure 1/4 female NPT

taps

Enclosure Rating N/A

N/A

200°F (93°C) 1/8 female NPT
N/A

DIFFERENTIAL PRESSURE
Accessories

SERIES

AHU1/2

Accessory

Surface mounting kit

Material

ABS plastic

Dimensions

4-1/2 x 4-1/2

Enclosure Rating N/A

Mounting Orientation Surface

Aesthetics/Function Quick Install accessory

Part Sold Separately Yes

Part Number

A-607/A-607 with A-481

A-464
Flush mounting kit White ABS plastic 6-1/2 x 6-1/2 N/A Flush Cleanroom mount Yes A-464

A-320-A
Enclosure ABS 4-23/32 x 3-37/64 x 6-19/64 NEMA 1 (IP10) Wall Quick install kit Yes A-320-A

Scale Customization
Customized logos/company name Printed on aluminum scale As per customer requirement N/A N/A Customize your application N/A N/A

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
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SELECTION GUIDE | PRESSURE

DIFFERENTIAL PRESSURE
Pressure Gages/Switches

SERIES
Ranges
Service
Wetted Materials Housing Switch Type Accuracy

DHII*
0.25 to 100 in w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available) Air and non-combustible, compatible gases Consult factory Aluminum, glass (2) SPDT ±0.5% FS

Pressure Limits

2 psi (2.5 in w.c.); 5 psi (5 to 50 in w.c.); 9 psi (100 in w.c.)

Temperature Limits 32 to 140°F (0 to 60°C) Process Connection 1/8 female NPT

Enclosure Rating NEMA 4 (IP66)

DH*
0.25 to 100 in w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available) Air and non-combustible, compatible gases Consult factory ABS plastic, UL approved 94 V-0 (2) SPDT ±0.5% FS
2 psi (2.5 in w.c.); 5 psi (5 to 50 in w.c.); 9 psi (100 in w.c.)
32 to 140°F (0 to 60°C) Compression fitting for 1/8 ID tubing or barbed fitting for 3/16 ID tubing NEMA 4X (IP66)

DH3*
0.25 to 100 in w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available) Air and non-combustible, compatible gases Consult factory Die cast aluminum case and bezel (2) SPDT ±0.5% FS (±1% or ±1.5 for certain ranges) 2 psi (2.5 in w.c.); 5 psi (5 to 50 in w.c.); 9 psi (100 in w.c.)
32 to 140°F (0 to 60°C) 1/8 female NPT
N/A

A3000*
0 to 0.25 in w.c. (0 to 60 Pa) up to 0 to 150 in w.c. (0 to 30 kPa)
Air and non-combustible, compatible gases Consult factory N/A (2) DPDT ±2% FS (±3% or 4% for certain ranges) -20 Hg to 25 psig (-0.677 bar to 1.72 bar); MP option: 35 psig (2.41 bar); HP option: 80 psig (5.52 bar). 20 to 120°F (-6.67 to 48.9°C) 1/8 female NPT
N/A

LOW DIFFERENTIAL PRESSURE
Pressure Switches

SERIES
Set Point Range
Service

ADPS
.08 to 20 in w.c. (20 to 5000 Pa)
Compatible gases

EDPS
.08 to 20 in w.c. (20 to 5000 Pa)
Compatible gases

1800
.07 to 85 in w.c. (.017 to 21 kPa)
Compatible gases

1900
.07 to 20 in w.c. (.017 to 5 kPa)
Compatible gases

Wetted Materials

Silicone, PA 6.6, and Polystyrene

Temperature Limits -4 to 185°F (-20 to 85°C)

Pressure Limits

40 in w.c. (10 kPa)

Power Requirement None

Repeatability

1%

Adjustable Deadband No

Set Point Indication Yes

Enclosure Rating

GP

Switch Type

SPDT

Multiple Stages

No

Process Connection Hose connection for 5/16 OD and

1/4 ID tubing

Silicone, PA 6.6, and materials UL 94 V-0 rated -4 to 185°F (-20 to 85°C) 40 in w.c. (10 kPa) None 1% No Yes UL 94 V-0 rated SPDT No Hose connection for 5/16 OD and 1/4 ID tubing

Consult factory
-30 to 180°F (-34 to 82°C) 10 psig (69 kPa) None 2% No No GP, WP, or EXP SPDT No 1/8 female NPT

Consult factory
-30 to 180°F (-34 to 82°C) 45 in w.c. (11.2 kPa) None 3% No No GP, WP, or EXP SPDT No 1/8 female NPT

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.

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PRESSURE | SELECTION GUIDE

DIFFERENTIAL PRESSURE
Pressure Gages/Switches

SERIES
Ranges

43000*

3000MR*

0 to 0.5 in w.c. up to 0 to 500 in w.c. 0 to 0.25 in w.c. (0 to 60 Pa)

up to 0 to 100 in w.c. (0 to 4 kPa)

3000MRS*
0 to 0.25 in w.c. (0 to 60 Pa)
up to 0 to 100 in w.c. (0 to 4 kPa)

MP*
0 to 0.5 in w.c. (0 to 125 kPa)
up to 0 to 20 in w.c. (0 to 3 kPa)

Service
Wetted Materials Housing Switch Type Accuracy
Pressure Limits

Compatible gases and liquids
Consult factory N/A (2) DPDT ±3% FS (±4% for certain ranges)
-20 Hg to 500 psig (-0.677 bar to 34.5 bar)

Air and non-combustible compatible Air and non-combustible compatible Air and non-combustible,

gases

gases

compatible gases

Consult factory

Consult factory

Consult factory

N/A

N/A

N/A

SPDT

Solid state relay

(2) SPDT

±2% FS (±3% or 4% for certain

±2% FS (±3% or 4% for certain

±5% FS

ranges)

ranges)

-20 Hg to 25 psig (-0.677 bar to

-20 Hg to 25 psig (-0.677 bar to

30 psig (2.067 bar)

1.72 bar)

1.72 bar)

Temperature Limits 20 to 120°F (-6.67 to 48.9°C) Process Connection 1/4 female NPT

20 to 120°F (-6.67 to 48.9°C) 1/8 female NPT

20 to 120°F (-6.67 to 48.9°C) 1/8 female NPT

20 to 120°F (-6.67 to 49°C) Barbed for 3/16 ID tubing or 1/8 male NPT

Enclosure Rating N/A

N/A

N/A

N/A

LOW DIFFERENTIAL PRESSURE
Pressure Switches

SERIES
Set Point Range Service
Wetted Materials

MDS
.5 to 50 in w.c. (.12 to 12.5 kPa) Air or compatible fluids on "high side" Polycarbonate and polyurethane

MDA

1831

.1 to 100 in w.c. (.25 to 249.1 mbar) 2.5 to 23 in w.c. (.62 to 5.7 kPa)

Air or compatible fluids on "high

Compatible gases

side"

Polycarbonate and polyurethane Consult factory

Temperature Limits 40 to 150°F (4 to 66°C)

Pressure Limits

15 psig (1 bar)

Power Requirement None

Repeatability

Consult factory

Adjustable Deadband No

Set Point Indication No

Enclosure Rating

GP

Switch Type

SPST NO

Multiple Stages

No

Process Connection Hose barb for 1/8-3/16 ID tubing

40 to 150°F (4 to 66°C) 15 psig (1 bar) None Consult factory No No GP SPST NO No Smooth port for 1/8 ID tubing

-30 to 180°F (-34 to 82°C) 10 psig (69 kPa) None 4% No No GP DPDT No 1/8 female NPT

1640
.01 to 12 in w.c. (.003 to 3 kPa) Compatible gases
Consult factory
-30 to 110°F (-34 to 43°C) 10 psig (69 kPa) None Consult factory No Yes GP, WP, or EXP SPDT Yes 1/8 female NPT

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
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SELECTION GUIDE | PRESSURE

LOW DIFFERENTIAL PRESSURE
Pressure Switches

SERIES
Set Point Range
Service Wetted Materials

1620
.15 to 24 in w.c. (.04 to 6 kPa) Compatible gases Consult factory

Temperature Limits -30 to 130°F (-34 to 54°C)

Pressure Limits

50 in w.c. (12.41 kPa)

Power Requirement None

Repeatability

1%

Adjustable

No

Deadband

Set Point Indication No

Enclosure Rating GP and WP

Switch Type

(2) SPDT

Multiple Stages

Yes

Process Connection 1/8 female NPT

1630
.05 to 12 in w.c. (.012 to 3 kPa) Compatible gases Consult factory
-30 to 110°F (-34 to 43°C) 10 psig (69 kPa) None 1% No
Yes GP and WP SPDT No 1/8 female NPT

PG
1 in w.c. to 5 psig (.25 kPa to 3.4 bar) Compatible gases Fairprene, brass, steel, and aluminum -10 to 180°F (-23 to 82°C) Consult factory None 1% No
Yes GP, WP, or EXP SPDT or DPDT No 1/8 female and 1/2 male NPT

1950
.03 to 20 in w.c. (.007 to 5 kPa) Compatible gases Consult factory
-40 to 140°F (-40 to 60°C) 45 in w.c. (11.2 kPa) None Consult factory No
No WP and EXP SPDT No 1/8 female NPT

LOW DIFFERENTIAL PRESSURE - NON-INDICATING
Pressure Transmitters and Transducers

SERIES

616KD*

Ranges

1 to 20 in w.c. (250 to 5000 Pa) to 5000 Pa

(Bi-directional available)

Accuracy

616KD-A: ±0.25% FS; 616KD-B: ±1% FS;

616KD-C: ±2% FS

Wetted Materials Consult factory

Comp. Temp. Limits 20 to 122°F (-6.67 to 50°C)

Oper. Temp. Limits 0 to 140°F (-17.8 to 60°C)

Output Signal

4 -20 mA or field selectable 0 to 10/0 to 5/2 to

10/1 to 5 V

Elec. Connection Screw-type terminal block

Process Connection Barbed for 1/8 and 3/16 ID rubber or vinyl tubing
Enclosure Rating NEMA 1 (IP20)

668B/D*
.1 to 100 in w.c. (25 to 25000 Pa) (Bi-directional available) ±0.8% FS
Consult factory 40 to 170°F (4.4 to 77°C) 0 to 170°F (-18 to 77°C) 4-20 mA, 0-10 VDC, or 0-5 VDC
Screw-type terminal block
3/16 OD barbed brass for 1/8 ID push-on tubing UL 94 V-0 rated

608*
0.1 to 25 in w.c. (25 to 6200 Pa) (Bi-directional available) ±0.5% or ±0.25% FS
Consult factory 0 to 160°F (-18 to 71°C) -20 to 185°F (-28 to 85°C) 4-20 mA
Screw-type terminal block, Two 1/2 female NPT conduit 1/4 female NPT
NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
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PRESSURE | SELECTION GUIDE

LOW DIFFERENTIAL PRESSURE
Pressure Switches

SERIES
Set Point Range
Service Wetted Materials

1950G
.07 to 20 in w.c. (.017 to 5 kPa) Compatible gases Consult factory

Temperature Limits 0 to 140°F (-18 to 60°C)

Pressure Limits

45 in w.c. (11.2 kPa)

Power Requirement 24 VDC, 120 or 240 VAC

Repeatability

Consult factory

Adjustable

No

Deadband

Set Point Indication No

Enclosure Rating WP and EXP

Switch Type

SPDT

Multiple Stages

No

Process Connection 1/8 female NPT

H3
180 in w.c. to 200 psid (0.5 to 13.5 bar) Compatible liquids or gases Aluminum/Nitrile or SS/ Fluoroelastomer -4 to 220°F (-20 to 104°F) 1500 psig (103 bar) None Consult factory No
No EP SPDT or DPDT No 1/8 female NPT

DX
2.5 to 75 psi (.17 to 5.2 bar) Compatible liquids or gases Brass and fluoroelastomer
30 to 140°F (-1 to 60°C) 200 psig (13.8 bar) None 2% Yes
No WP SPDT No 1/4 female NPT

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 6

SELECTION GUIDE | PRESSURE

LOW DIFFERENTIAL PRESSURE - INDICATING
Pressure Transmitters and Transducers

SERIES
Ranges

616W*
6 in w.c. to 2.5 kPa

DM-2000*
.1 to 5 in w.c. (Bi-directional available)

Accuracy

±0.25% FS, display accuracy ±0.5%

±1% FS

Wetted Materials Consult factory

Consult factory

Comp. Temp. Limits N/A

N/A

Oper. Temp. Limits 0 to 150°F (-17.8 to 66°C)

20 to 120°F (-7 to 49°C)

Output Signal

4-20 mA (2-wire), 0-5 VDC, or 0-10 VDC (3-wire) 4-20 mA

Elec. Connection 3-wire terminal block for 16 to 26 AWG

Screw-type terminal block

Process Connection Barbed for 1/8 and 3/16 ID rubber or vinyl

1/8 ID tubing

tubing

Enclosure Rating NEMA 4X (IP66)

N/A

605*
Vacuum, .5 to 50 in w.c. (60 to 1500 Pa)
±0.5% or ±2% FS Consult factory 32 to 120°F (0 to 48.9°C) 20 to 120°F (-6.67 to 48.9°C) 4-20 mA Screw-type terminal block 1/8 female NPT
N/A

WET-WET DIFFERENTIAL PRESSURE
Pressure Transmitters and Transducers

SERIES
Ranges

3100D*
6 in w.c. to 0-1000 psig

636D*
15 to 300 psi

629C*
5 to 500 psid (0.5 to 30 bar)

629C-3V*
5 to 500 psid (0.5 to 30 bar)

Accuracy Wetted Materials

±0.075% FS 316L SS

±0.5% FS 316L SS

±0.50% FS 316, 316L SS

±0.50% FS 316, 316L SS, Brass 360, Copper, Reinforced acetal copolymer

Comp. Temp. Limits Oper. Temp. Limits Output Signal

N/A -40 to 185°F (-40 to 85°C) 4-20 mA or HART® Communication

-20 to 180°F (-29 to 82°C) -40 to 212°F (-40 to 100°C) 4-20 mA or 1 to 5 VDC

0 to 175°F (-18 to 79°C) 0 to 200°F (-18 to 93°C) 2-wire: 4-20 mA; 3-wire: Selectable 0-5, 1-5, 0-10, or 2-10 VDC

0 to 175°F (-18 to 79°C) 0 to 200°F (-18 to 93°C) 2-wire: 4-20 mA; 3-wire: Selectable 0-5, 1-5, 0-10, or 2-10 VDC

Elec. Connection (2) 1/2 female NPT conduit, screw terminal
Process Connection 1/4 female NPT Enclosure Rating NEMA 4X (IP66)

2´ (61 cm) cable, 3/4 female NPT conduit 1/2 female NPT NEMA 4 (IP66)

Screw-type removable terminal block; 1/2 female NPT conduit 1/4 female NPT NEMA 4X (IP66)

Screw-type removable terminal block; 1/2 female NPT conduit 1/4 female NPT Non-LCD designed to meet NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE

HART® is a registered trademark of Hart Communication Foundation

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.

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PRESSURE | SELECTION GUIDE

LOW DIFFERENTIAL PRESSURE - INDICATING
Pressure Transmitters and Transducers

SERIES

MS2*

Ranges

0.1 in w.c. to 28 in w.c. (25 Pa to 6975 Pa)

(Bi-directional available)

Accuracy

±1% or ±2% FS

Wetted Materials Consult factory

Comp. Temp. Limits N/A

Oper. Temp. Limits 0 to 150°F (-18 to 66°C)

Output Signal

4-20 mA (2-wire), 0-5 VDC, 0-10 VDC (3-wire)

Elec. Connection 3-wire terminal block for 16 to 22 AWG

Process Connection 3/16 I.D. tubing (5 mm ID); Max OD 9 mm

ISDP*
0.1 to 100 in w.c. (Bi-directional available)
±0.5% FS Consult factory 32 to 140°F (0 to 60°C) 32 to 140°F (0 to 60°C) 4-20 mA DC M-12 4-pin connector 1/8 female NPT

Enclosure Rating NEMA 4X (IP66)

NEMA 4X (IP66)

WET-WET DIFFERENTIAL PRESSURE
Pressure Transmitters and Transducers

SERIES
Ranges

629HLP*
15 to 90 psi (1 to 6 bar)

Accuracy Wetted Materials

±1% FS 304 SS

Comp. Temp. Limits -5 to 60°C (23 to 140°F)

Oper. Temp. Limits -10 to 80°C (14 to 176°F)

Output Signal

4-20 mA, 0-10 VDC

647*
1 in w.c. to 0-30 psid (245 Pa to 0-2.0 bar) ±1% FS Brass, vinyl, glass-filled polyester, silicon, florosilicone N/A 32 to 122°F (0 to 50°C) 4-20 mA

645*
1 to 100 psid (0.07 to 6.5 bar) (Bi-directional ranges available) ±0.25% FS 17-4 PH SS, Fluoroelastomer, Silicone 30 to 150°F (-1 to 65°C) 0 to 175°F (-18 to 80°C) 4-20 mA

WWDP*
5 to 250 psi
±1% FS Consult factory
32 to 130°F (0 to 54°C) -4 to 185°F (-20 to 85°C) Selectable 0-5, 0-10, and 0-5 VDC; 4-20 mA

Elec. Connection Form A DIN 43650

Screw-type terminal block

Screw-type terminal block

1/2 conduit

Process Connection 1/4 female NPT, 1/4 female BSPT 1/8 female NPT

Enclosure Rating IP65

N/A

1/4 female NPT NEMA 4X (IP66)

1/8 female NPT internal NEMA 4 (IP66)

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SELECTION GUIDE | PRESSURE

SINGLE PRESSURE
Pressure Gages

SERIES

LPG4/LPG5*

Ranges

-235 to 160 in w.c. (-60 to 40 kPa)

Service

Compatible gases/liquids

Wetted Materials Brass, bronze or SS

Housing

LPG4: Drawn Steel; LPG5: Chrome plated

Accuracy

LPG4 ±1.5% FS; LPG5 ±3%-2%-3% FS

Pressure Limits

100% FS

Temperature Limits Ambient: -40 to 140°F (-40 to 60°C);

LPG5 -4 to 140°F (-20 to 60°C)

Process Connection 1/4 male NPT

Enclosure Rating N/A

SGY & SGZ*
-30 Hg to 1000 psi (-1 to 70 bar) Compatible gases/liquids Brass, bronze or SS 304 SS ±1.5 to ±2.5% FS 100% FS -4 to 140°F (-20 to 60°C)
1/4 male NPT NEMA 3 (IP54)

765*
30 Hg to 20,000 psi (-100 to 135,000 kPa) Compatible gases/liquids 316L SS, Bourdon tube Phenolic plastic with safety blow-out back ±0.5% FS ANSI/ASME (Grade 2A) 110 to 125% FS -40 to 200°F (-40 to 93°C)
1/4 or 1/2 male NPT IP65 (NEMA 4)

HIGH SINGLE PRESSURE - INDICATING
Pressure Transmitters and Transducers

SERIES
Ranges
Accuracy

DSGT*
30 to 20,000 psig and compound ranges
±0.25% FS

Wetted Materials 17-4 SS, 316 SS

Comp. Temp. Limits N/A

Oper. Temp. Limits 14 to 140°F (-10 to 60°C)

Output Signal

4-20 mA

Elec. Connection 3 flying leads

Process Connection 1/2 male NPT Enclosure Rating NEMA 4X

EDA*

626/628-CB*

20 to 3000 psig

Up to 300 psia, 8000 psig,

16 bar abs, 550 bar

±1% FS

626: ±0.25% FS; 628: ±1%

FS

316L SS

316, 316L SS

32 to 122°F (0 to 50°C)

0 to 175°F (0 to 79°C)

20 to 140°F (-6.6 to 60°C) 0 to 200°F (0 to 94°C)

4-20 mA, 1-6 VDC, 1-5

4-20 mA

VDC, 0-5 VDC, or 0-10 VDC

Screw-type removable

Terminal block, 1/2 female

terminal blocks with (2)

NPT conduit

1/2 female NPT conduit

connections

1/4 male NPT, 1/4 male 1/4 male or female NPT or

BSPT, or 7/16 SAE

BSPT

NEMA 4X (IP66)

NEMA 4X (IP66)

IWP
30 to 1000 psig ±0.5% FS 304 and 316 SS -22 to 203°F (-30 to 95°C) 32 to 158°F (0 to 70°C) 4-20 mA 1/2 female NPT
1/2 female NPT IP65

3200G*
-14.5 psig to 8500 psig
±0.075% FS
316L SS N/A -40 to 185°F (-40 to 85°C) 4-20 mA or HART® Communication (2) 1/2 female NPT conduit, screw terminal
1/2 female NPT
NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE

HART® is a registered trademark of Hart Communication Foundation

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.

9 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRESSURE | SELECTION GUIDE

DIGITAL SINGLE PRESSURE
Pressure Gages

SERIES
Ranges
Service
Wetted Materials Housing

DPGA*
-30 Hg to 500 psig (-1.013 to 34.47 bar) Air and compatible gases
316L SS, silicone sensor ABS plastic

Accuracy Pressure Limits

±1% FS 200% FS; 30 psig for vacuum models

Temperature Limits 30 to 120°F (-1 to 49°C) Process Connection 1/4 male NPT Enclosure Rating N/A

DPGW*
-30 Hg to 500 psig (-1.013 to 34.47 bar) Compatible gases/liquids
316L SS ABS plastic
±1% FS 200% FS; 30 psig for vacuum models
30 to 120°F (-1 to 49°C) 1/4 male NPT N/A

DPG-000*
-14.7 to 8000 psig (-1.0 to 550 bar) Compatible liquids and combustible gases Type 316L SS Polycarbonate front and back cover, anodized aluminum housing, polycarbonate overlay, Buna-N O-rings, 316L SS sensor construction ±0.5% FS 200% FS (1000 psi); 5000 psi (3000 psi); 7500 psi (5000 psi) 0 to 130°F (-18 to 55°C) 1/4 male NPT NEMA 4/4X (IP66)

DPG-100*
-14.7 to 8000 psig (-1.0 to 550 bar) Compatible liquids and combustible gases Type 316L SS Polycarbonate front and back cover, anodized aluminum housing, polycarbonate overlay, Buna-N O-rings, 316L SS sensor construction ±0.25% FS 200% FS (1000 psi); 5000 psi (3000 psi); 7500 psi (5000 psi) 0 to 130°F (-18 to 55°C) 1/4 male NPT NEMA 4/4X (IP66)

DPG-200*
5 to 8000 psig (0.3 to 550 bar) Liquids and non-combustible compatible gases Type 316L SS Polycarbonate front and back cover, anodized aluminum housing, polycarbonate overlay, Buna-N O-rings, 316L SS sensor construction
±0.25% FS 200% FS (1000 psi); 5000 psi (3000 psi); 7500 psi (5000 psi) 0 to 158°F (-18 to 70°C) 1/4 male NPT NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 10

SELECTION GUIDE | PRESSURE

SINGLE PRESSURE
Pressure Switches

SERIES
Set Point Range

EDA*
20 to 3000 psig
(1.38 to 206 bar)

Service
Wetted Materials

Compatible liquids or gases 316 SS

Temperature 20 to 140°F

Limits

(-6.6 to 60°C)

Pressure

4500 psig (310 bar)

Limits

Power

12-30 VDC/AC

Requirement

Repeatability 0.5%

Adjustable Yes

Deadband

Set Point

Yes

Indication

Enclosure WP

Rating

Switch Type (2) SPDT

Multiple Stages Process Connection

No 1/4 male NPT

DA/DS

SA1100

30 Hg VAC to 8000 psig 10 to 500 psig

(762 mm Hg VAC to

(.7 to 34 bar)

551 bar)

Compatible liquids or Compatible liquids or

gases

gases

Brass, 403 SS, or 316 Aluminum, brass, or

SS

316 SS with Buna-N or

fluorocarbon

-10 to 180°F

-30 to 180°F

(-23 to 82°C)

(-35 to 77°C)

8000 psig (551 bar)

3000 psig (207 bar)

1000W/E
5 to 1400 psig
(.48 to 96.5 bar)

A1F
2 to 450 psig
(.14 to 10.3 bar)

Compatible liquids or gases Aluminum or 316 SS with polyamide, 316 SS, or Teflon® -30 to 170°F (-35 to 77°C) 3000 psig (207 bar)

Compatible liquids or gases Fluorocarbon and 316 SS
-40 to 175°F (-40 to 80°C) 750 psig (51 bar)

A1PS/A1VS
28 Hg VAC to 500 psig (711 mm Hg VAC to 34.5 bar) Compatible liquids or gases Zinc and Buna-N
-31 to 185°F (-35 to 85°C) 600 psig (41 bar)

None

None

None

None

None

1%

Consult factory

Consult factory

Consult factory

Consult factory

Yes

Yes

No

No

No

Yes

Yes

Yes

Yes

Yes

GP, WP, or EXP

WP and EXP

WP or EXP

GP or WP

GP

SPDT or DPDT

SPDT or DPDT

SPDT or DPDT

SPDT

SPDT

Yes

No

No

No

No

GP/WP: 1/4 male NPT or 1/2 male NPT; EXP: 1/2 male NPT and 1/4 female NPT

1/4 or 1/2 female NPT

1/4 female NPT

1/4 female and 1/2 male NPT

1/4 male NPT

*CALIBRATION SERVICES AVAILABLE

Teflon® is a registered trademark of E.I. Dupont De Nemours and Company

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.

11 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRESSURE | SELECTION GUIDE

SINGLE PRESSURE
Pressure Switches

SERIES
Set Point Range
Service
Wetted Materials

APS/AVS
28 Hg VAC to 500 psig (711 mm Hg VAC to 34.5 bar) Compatible liquids or gases 17-4 PH SS and 303 SS

A6
.5 to 150 psig (.03 to 10.3 bar)
Compatible liquids or gases Polyimide with brass or 304 SS

AP
10 in w.c. VAC to 125 psig (2.5 kPa VAC to 8.6 bar)
Compatible liquids or gases
Steel and Buna-N 04 316 SS and Teflon®

Temperature -65 to 225°F

Limits

(-54 to 107°C)

Pressure

750 psig (51 bar)

Limits

Power

None

Requirement

Repeatability Consult factory

Adjustable No

Deadband

Set Point

Yes

Indication

Enclosure GP

Rating

Switch Type SPDT

Multiple Stages Process Connection

No 1/8 mail NPT

-40 to 248°F (-40 to 120°C) 500 psig (34 bar)
None
±10% No
No
GP or WP
(1) SPST NO and (1) SPST NC No
1/4 male NPT

-30 to 150°F (-35 to 66°C) 160 psig (11 bar)
None
Consult factory No
Yes
GP, WP, or EXP
SPDT or DPDT
No
1/4 female NPT

A2
5 to 150 psig (.34 to 10 bar)
Compatible liquids or gases Kapton® and brass
-40 to 250°F (-40 to 121°C) 500 psig (34 bar)
None
5% No
No
GP or submersible
SPST
No
1/8 male NPT

MVS
3 to 330 in w.c. VAC (8 to 822 mbar VAC)

CXA
15 to 150 psig (1.0 to 10.3 bar)

Compatible liquids or gases Polycarbonate and polyurethane

Compatible liquids or gases Silicone, steel, and SS

40 to 150°F (4 to 66°C) 140°F (60°C)

330 in w.c. (822 mbar) 204 psig (14.1 bar)

None

None

20% No

±5 psig (.3 bar) Yes

No

No

GP

GP

SPDT

SPST NO or NC

No

No

Consult factory

1/4 female NPT

Teflon® is a registered trademark of E.I. Dupont De Nemours and Company These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 12

SELECTION GUIDE | PRESSURE

HIGH SINGLE PRESSURE - NON-INDICATING
Pressure Transmitters and Transducers

SERIES
Ranges

681*
1 to 100 psi

638R
75 to 667 psia (5.2 to 46
bar(a))

682
25 to 10,000 psi

672*
10 to 400 in w.c.

673*
Compound, 1 to 1000 psi

Accuracy

±0.20% FS

±1.2% FS

±0.13% FS

±0.25% FS

±0.25% FS

Wetted Materials 316L SS

Comp. Temp. Limits 20 to 180°F (-7 to 80°C)

Oper. Temp. Limits -40 to 260°F (-40 to 125°C)

Output Signal

4-20 mA

Elec. Connection 15 ft (4.5 m) multi-conduit

cable

Process Connection 1-1/2 or 2 sanitary clamp

Enclosure Rating NEMA 4X (IP66)

Brass, aluminum, or 316 SS 17-4 PH SS

-40 to 275°F (-40 to 135°C) -40 to 275°F (-40 to 135°C) 0.5-4.5 VDC ratiometric Packard connection
7/16 20 UNF (female) or 1/4 NPT (female) IP67

-4 to 176°F (-20 to 80°C) -40 to 260°F (-40 to 125°C) 4-20 mA 2 ft (61 cm) multi-conductor cable 1/4 male or female NPT or BSPT NEMA 4X (IP66)

318 Duplex SS, Ceramic, fluoroelastomer -5 to 140°F (-20 to 60°C) -40 to 212°F (-40 to 100°C) 4-20 mA or 0-5 VDC Large DIN 43650 connector with mating plug 1/4-18 male NPT

17-4 PH SS
4 to 212°F (-20 to 100°C) -40 to 260°F (-40 to 125°C) 4-20 mA 2 ft (61 cm) multi-conductor cable 1/4 male NPT

NEMA 4X (IP66)

NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
13 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRESSURE | SELECTION GUIDE

HIGH SINGLE PRESSURE - NON-INDICATING
Pressure Transmitters and Transducers

SERIES
Ranges
Accuracy Wetted Materials

FDT*
100 to 10,000 psi (7 to 690 bar)
±0.5% FS
316 and 15-5 SS

626/628-GH*
Up to 300 psia, 8000 psig,
16 bar abs, 550 bar

636*
15 to 300 psi (1 to 20 bar)

626: ±0.25% FS; 628: ±1% FS 316, 316L SS

±0.30% FS 316L SS

IS626*
15 to 8000 psig (1 to 550 bar); 15 to 30 psia (1 to 3 bara) ±0.25% FS; 0.5% FS for absolute ranges 316 and 316L SS

Comp. Temp. Limits Oper. Temp. Limits Output Signal Elec. Connection

0 to 170°F (-18 to 77°C) -40 to 200°F (-40 to 93°C) 4-20 mA or 0-5 VDC 4-pin

Process Connection 7/16-20 UNF male flush diaphragm; 1/4 male NPT
Enclosure Rating NEMA 4X (IP66)

0 to 175°F (0 to 79°C) 0 to 200°F (0 to 94°C) 4-20 mA Cable, DIN connector, or 4-pin M12 1/4 male or female NPT or BSPT NEMA 4X (IP66)

-20 to 180°F (-29 to 82°C) -40 to 212°F (-40 to 100°C) 4-20 mA or 1-5 VDC 2 ft (61 cm) cable, 3/4 female NPT conduit 1/2 female NPT
NEMA 4X (IP66)

0 to 176°F (-18 to 80°C) 0 to 176°F (-18 to 80°C) 4-20 mA 3 cable or 4-pin M-12 connector 1/4 male or female NPT or BSPT NEMA 4X (IP66)

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 14

TYPICAL APPLICATIONS | PRESSURE

Differential pressure gage assists operator in adjusting venturi pressure drop in dust scrubber
This scrubber design removes unwanted dust or particulate matter from air or gas using an adjustable throat venturi. To adjust the pressure drop across the venturi, a jack-screw-actuated sliding vane varies the slot width. A permanently mounted Dwyer® Magnehelic® differential pressure gage indicates the venturi pressure drop while the operator adjusts to the desired or design setting. Where water may possibly enter the gage sensing lines, as in this application, drop legs with drain valves are needed to permit draining the lines at their lowest point. Good engineering practice dictates that the Magnehelic® gage always be mounted above the sensing tap when possible to prevent moisture accumulation in the lines and gage. At minimum, mount the gage above the lowest point in the sensing lines.

Gasoline vapor recovery system
Some area pollution control agencies require that 90% or more of gasoline vapor vented at service stations when fuel is dispensed must be prevented from venting to atmosphere. Using a dual hose dispenser, this vapor recovery system is a vacuum assist, vapor burnoff type. The blower creates a low vacuum at the nozzle, routing vapor from the automobile tank to underground storage tanks. As uncondensed vapor pressure reaches 2 in to 3 in w.c. pressure, a Dwyer® Series 1950 explosion-proof differential pressure switch activates a rooftop burnoff unit, which ignites excess vapor. The Magnehelic® differential pressure gage mounted on the station wall monitors tank pressure to verify system operation. The gage is calibrated in inches of gasoline, from +6 to -2. This allows the operator to determine the necessary level correction due to tank pressure prior to dipsticking the tanks through the fill pipe.

Dwyer® gages indicate pressurization of special rooms

Filling scuba diver air tanks

A zero-center Dwyer® Magnehelic® differential pressure gage with a 0.25 in w.c. range either side of zero makes an effective monitor for proper operation of room pressurization systems. In the example, differential gage B has its high pressure port open to room 2 and its low pressure port to room 1; gage A has its high pressure port open to room 1 and its low pressure port open to the atmosphere. With the makeup air supply damper adjusted properly, room 2 will be a higher pressure than room 1 which is at higher than atmospheric pressure; both gages will read positive. Should the air supply to room 2 be obstructed, gage B will read negative. If the air supply fails entirely, both gages will read zero. For even better security, a Photohelic® switch/gage will provide automatic alarm or start-up of a backup system.

The Dwyer® Series DPG differential pressure gage with oxygen cleaning and 5000 psi range is used in gas blending applications for filling scuba diver's air tanks. The DPG is the master mixing gage in this manifold apparatus. Two or three gases may be blended with the manifold to produce the appropriate blend of breathable gas depending on the diver and the depths they will reach. With the flow adjustment knobs and the 0.25% full-scale accuracy DPG, precise tank charging rates are maintained.

15 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PRESSURE | TYPICAL APPLICATIONS

Compact switch/gage monitors pressure, actuates alarm

Zero-center switch/gage controls the inert atmosphere in glove box

This portable pressure monitor alarm utilizes a Dwyer® Mini-Photohelic® differential pressure switch/gage to monitor either positive pressure, as in a clean room, or negative pressure, as in a fume or paint spray hood. It sounds an alarm, both audible and visual, when pressure exceeds either a preset high or low limit. The unit can be used temporarily to verify proper operation after initial installation, or it can be mounted permanently for continuous monitoring. In applications where a single fixed alarm pressure level is sufficient, a differential pressure switch can be used instead.

A controlled inert atmosphere "glove-box" is used in the fields of physical chemistry and metallurgy for handling and welding special or hazardous materials. A Dwyer® Photohelic® differential pressure switch/gage serves as an automatic and readily adjustable pressure control for the helium, argon or nitrogen gas used in the system. The box is first evacuated, then pressurized with the required gas. Therefore, a zerocenter Photohelic® switch/gage is used, permitting both pressure and vacuum to be read and controlled by a single gage. Use of the low pressure gage connection (rear chamber of gage) and a Buna-N diaphragm is suggested to minimize leaks from or to the atmosphere.

Mercoid® Series DA pressure switch maintains desired gas pressure in tank

Three-valve manifold simplifies installation of wet/wet differential pressure transmitter

Demand for compressed gas varies in this gas line. Because of this, a Mercoid® Series DA adjustable deadband pressure switch is included to turn the compressor on at low pressure and off when the maximum pressure is reached.

When using differential pressure transmitters in fluid applications, it is essential to periodically make sure that there is no air in the system, as this can cause erroneous readings. Unfortunately, the necessary three-valve bleed system is often expensive and large, making installation difficult and bulky. For this reason, Dwyer Instruments, Inc. offers the 3V option on all 629C wet/wet differential pressure transmitters. This compact, lightweight, and economical bleed manifold is shipped factory-installed on the 629C, eliminating the hassle of constructing a custom apparatus. The 629C, when combined with the three-valve option, makes for an ideal setup to monitor hydraulic filter clogging or other fluid pressure sensing applications.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 16

SELECTION GUIDE | TEMPERATURE

DIAL
Thermometers

SERIES
Range
Dial Size

BT
0 to 1000°F
2, 3 or 5

Stem Length

2.5, 4 or 6

Process Connection 1/2 NPT; Back, lower, or adjustable mount

BTLRN
0 to 200°F 3
12 to 72
1/2 NPT; Back mount

IT
-40 to 550°F 9 liquid filled linear scale
2-1/2 or 5 thermowell
3/4 NPT; Adjustable lower mount

BTO
0 to 550°F 3 or 5 with 4-20 mA temperature output 2-1/2, 4, 6, 9, or 12
1/2 NPT; Adjustable mount

RRT3
-40 to 300°F 3-1/2 with set point and SPDT output 3-1/8 remote stem with 10.5´ capillary 1/2 NPT; Remote mount

LIMIT CONTROL
Digital Temperature Switches

SERIES
Number of Temperature Units Temperature Input Type Digital Input Number of Relay Outputs Relay Type Approvals

16L
1 Thermocouple, RTD, voltage, or current No 1 or 2 2 SPST, 1 SPDT FM, UL

TSF
1 Type J, K, or S thermocouple Yes 1 SPDT CE, FM, UL

TSF-DF
1 Type J, K, or S thermocouple Yes 1 SPST CE, UL

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 17 DWYER INSTRUMENTS, INC. | dwyer-inst.com

TEMPERATURE | SELECTION GUIDE

PID LOOP CONTROLLERS
Temperature and Process Controllers

SERIES

16C, 8C, 4C

Number of

1

Temperature Inputs

Temperature Input Type Thermocouple or RTD

DIN Sizes Number of Outputs Output Type

1/16, 1/8, 1/4 1 SPDT mechanical relay 14 VDC pulse voltage 4-20 mA current

Approvals

CE, UL

32B, 16B, 8B, 4B
1
Thermocouple, RTD, current, or voltage 1/32, 1/16, 1/8, 1/4 2 SPDT mechanical relay 14 VDC pulse voltage 4-20 mA current 0-10 VDC voltage CE, UL

16G, 8G, 4G
1
Thermocouple, RTD, current, or voltage 1/16, 1/8, 1/4 2 SPDT mechanical relay 14 VDC pulse voltage 4-20 mA current 0-10 VDC voltage CE, UL

SCD
1 to 8
Thermocouple, RTD, current, or voltage DIN rail mount 2 to 16 SPDT mechanical relay 14 VDC pulse voltage 4-20 mA current 0-10 VDC voltage CE, UL

HEATING AND COOLING/REFRIGERATION CONTROL
Digital Temperature Switches

SERIES

TCS

TST & TS2

TSXT

Number of

1

1

3

Temperature Units

Temperature

Type J, K, or S thermocouple TST: PTC or NTC thermistor; PTC or NTC thermistor

Input Type

TS2: PTC

Digital Input

No

No

Yes

Number of Relay 1

2

1, 2, or 3

Outputs

Relay Type

SPDT

SPDT

1 output models: SPDT

2 and 3 output models:

SPST

Approvals

CE, UL

CE, cURus

CE, cURus

TSS2
2 PTC or NTC thermistor No 2 SPDT
CE, cURus

TSW
1 or 2 PTC or NTC thermistor No 1 or 2 SPDT
CE, cURus

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 18

TYPICAL APPLICATIONS | TEMPERATURE

Environmental chamber control simplified with digital zone control

Dwyer® controllers used within heater controllers

Environmental chambers have traditionally used separate controls to handle the temperature and relative humidity control tasks. The Love Controls® 32DZ dual zone control controls both parameters in a single small format (1/32 DIN) control to handle both zones, simplifying wiring and reducing panel costs. The 32DZ can switch small resistive loads directly or, when used with Dwyer® Series 62 solid state relays (not shown), can switch larger loads.

In bioscience laboratories, the preferred methods of temperature control for experiments are heated water baths. There are experiments where water cannot be used, so the next feasible option is to send temperature controlled air to the experiment site. In order to use temperature controlled air, an air heater is needed. Within this product, a Love Controls® temperature controller is used for accurate and responsive temperature control. The Love Controls® controller can adapt to a different environment through different operating modes such as SELF-TUNE or manual PID adjustments, or preset PID responses.

Love Controls® controllers involved in insulation removal
For most wires, removing the insulation is easy, but for magnetic and enamel wires, removing the insulation is very difficult. One way to easily remove the insulation of the magnetic or enamel wire is to dip them in a solution of molten fused salts. The salts are heated to a temperature high enough to melt the salts into a liquid, but not deteriorate them. This process uses a Love Controls® feedback temperature controller. The Love Controls® controller allows the operator to input a desired temperature and maintain that temperature accurately. The Love Controls® controller will also retain the input temperature after the power is disconnected.

Series TSX3 Digital Temperature Switches regulate temperature in refrigerated and display cases
When storing food or other perishables in chillers or display cases, temperature must be carefully regulated to ensure the products remain fresh. If the storage area rises above the critical preservation temperature, products can have their shelf life dramatically shortened or be spoiled altogether. A Dwyer® Series TSX3 digital temperature switch will prevent these scenarios by monitoring temperature and activating refrigeration and defrost cycles to ensure the storage temperature stays within safe limits.

19 DWYER INSTRUMENTS, INC. | dwyer-inst.com

TEMPERATURE | TYPICAL APPLICATIONS

Form, fill and seal machine control simplified with dual zone control Love Controls® controllers used in the packaging of condiments

Form, fill and seal machines traditionally have used separate controls to handle the temperature control requirement for the side and top/bottom seal bars. The Love Controls® 32DZ allows for a single small format (1/32 DIN) control to handle both zones, simplifying wiring and reducing panel costs. The 32DZ can switch small resistive loads directly or, when used with the Love® 62 Series solid state relays (not shown), can switch larger loads.

Packaging of condiments require the sealing bars to be heated to a temperature hot enough to seal the packages, but not destroy the packaging material. The heat on the sealing bars needs to be controlled to ensure the heat does not become excessive. Love Controls® controllers are used in this process to accurately control the heat on the sealing bars. The sensors from the Love Controls® controllers are placed on the sealing bars to ensure accurate temperature readings. Should the heat become excessive, an alarm light on the controller notifies the operator of the impending conditions.

Resin transfer molding

Controlling water temperature in outdoor wood furnace

Accurate control of temperature and epoxy resin flow is important during resin transfer molding. For the epoxy resin to have an even and thorough flow, the resin must be at a temperature high enough to allow it to flow, yet not burn the resin. With the help of a Love Controls® controller, the temperature of the resin is accurately controlled under different conditions through the different PID operating modes. Another Love Controls® controller, with a flow transducer, is used in this process to control the flow of the epoxy resin. The Love Controls® controller provides information on the temperature and flow rate to the computer through an RS-485 serial communication option.

The Series TSWB is the ideal control for monitoring water temperature and water level in outdoor wood furnaces. The Series TSWB controls the damper and/or the fan that provides oxygen to the flame in the fire box. Usually an external light will also be controlled by the Series TSWB to inform the user that the furnace is out of wood or that the water level is low. The TSWB accepts thermistor inputs for temperature and conductivity probe, Dwyer CLP-1, inputs for monitoring water level.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 20

SELECTION GUIDE | TEST & DATA

DIGITAL
Manometers

SERIES
Range
Service
Wetted Materials

477AV*
1 in w.c. to 150 psi (.25 kPa to 10.34 bar) Air and compatible gases
Consult factory

475*
1 in w.c. to 150 psi (.25 kPa to 10.34 bar) Air and compatible combustible gases Consult factory

476A*
±20 in w.c. (±5 kPa) Air and compatible gases
Consult factory

478A*
±4 in w.c.; ±60 in w.c. (±1 kPa; ±15 kPa) Air and compatible gases
Consult factory

Accuracy

±0.5% FS

±0.5% FS

±1.0% FS

Pressure Limits
Temperature Limits Comp. Temp. Limits Housing Protection Display

5 psig (1 to 10 in w.c.); 10 psig (20 5 psig (1 to 10 in w.c.); 10 psig (20 5 psig (.34 bar)

to 40 in w.c.); 30 psig (200 in w.c. to to 40 in w.c.); 30 psig (200 in w.c. to

10 psi); 60 psig (20 to 30 psi); 150 10 psi); 60 psig (20 to 30 psi); 150

psig (100 psi); 200 psig (150 psi) psig (100 psi); 200 psig (150 psi)

0 to 140°F (-17.8 to 60°C)

0 to 140°F (-17.8 to 60°C)

0 to 140°F (-17.8 to 60°C)

32 to 104°F (0 to 40°C)

32 to 104°F (0 to 40°C)

32 to 104°F (0 to 40°C)

Rugged aluminum housing

Rugged aluminum housing

Rugged aluminum housing

4-digit backlit LCD

4-digit LCD

4-digit LCD

Memory

40 readings

Process Connection (2) Barbed connections for

use with 1/8 or 3/16 ID tubing

(Compression fittings for -7, -8

ranges)

Approvals

CE

N/A (2) Barbed connections for use with 1/8 or 3/16 ID tubing (Compression fittings for -7, -8 ranges) CE, FM

N/A Barbed connection for use with 3/16 or 1/4 ID tubing
CE

±0.5% FS 5 psig (.34 bar)
0 to 140°F (-17.8 to 60°C) 32 to 104°F (0 to 40°C) Rugged aluminum housing 4-digit LCD N/A (2) Barbed connection for use with 3/16 or 1/4 ID tubing
CE

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
21 DWYER INSTRUMENTS, INC. | dwyer-inst.com

TEST & DATA | SELECTION GUIDE

DIGITAL
Manometers

SERIES
Range
Service

477B*
20 in w.c. to 100 psi (4.982 to 689.5 kPa)
Air and compatible gases

HM35*
10 in w.c. to 1305 psi (2.5 to 9000 kPa)
Air and compatible gases

HM28*
10 in w.c. to 245 psi (2.5 to 1700 kPa)
Air and compatible gases

490A*
15 to 200 psi (1 to 13.8 bar)
Compatible gases and liquids

Wetted Materials

Consult factory

18/8 SS

Accuracy
Pressure Limits
Temperature Limits Comp. Temp. Limits Housing Protection Display
Memory Process Connection

±0.1% FS
3 psig (20 to 40 in w.c.); 15 psig (200 in w.c.); 30 psig (10 psi); 60 psig (30 psi); 100 psig (50 psi); 200 psig (100 psi) 0 to 140°F (-17.8 to 60°C) N/A Rugged aluminum housing 4-digit backlit LCD
40 readings (2) Barbed connections for use with 1/8 or 3/16 ID tubing (Compression fittings for -6, -7 ranges)

(±0.2% FS, ±0.1% FS, or ±0.05% FS) ±1 digit N/A
32 to 122°F (0 to 50°C) N/A IP54 (NEMA 3) Graphical backlit LCD, 128 x 64 points 10,742 readings Hose 4/6 mm or 1/8 NPT

18/8 SS

316L SS; With 3-way valve:

Buna-N, silicone grease, PTFE,

brass 360, copper, reinforced acetal

copolymer

(±0.2% FS, ±0.1% FS, or ±0.05% ±0.5% FS

FS) ±1 digit

N/A

30 psig (15 psi); 60 psig (30 psi);

100 psig (50 psi); 200 psig (100

psi); 400 psig (200 psi); 1000 psig

(500 psi)

23 to 122°F (-5 to 50°C)

32 to 140°F (0 to 60°C)

N/A

N/A

IP54 (NEMA 3)

Rugged aluminum housing

2 line, 16 character, dot matrix LCD, 4-digit backlit LCD

with switchable display sizes

10,742 readings

Up to 40 readings

Hose 4/6 mm or 1/8 NPT

(2) 1/8 female NPT

Approvals

CE

N/A

N/A

CE

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 22

SELECTION GUIDE | TEST & DATA

THERMO
Anemometers

SERIES
Air Velocity Range Air Velocity Accuracy Temperature Range Temperature Accuracy Humidity Range Humidity Accuracy Air Volume Range Wet Bulb Range Meter Temperature Range
Meter Humidity Limits Display Approvals

471B*
0 to 6000 FPM (0 to 30 m/s) ±3% FS -40 to 212°F (-40 to 100°C) ±0.5°F (±0.28°C) N/A N/A 19,999 in selected flow units N/A Process Air Velocity: -20 to 212°F (-29 to 100°C); Process Temperature: -40 to 212°F (-40 to 100°C); Ambient: 5 to 125°F (-15 to 51°C) N/A 4.5-digit backlit LCD CE

473B*
40 to 5000 FPM (0.2 to 25 m/s) ±1.5% of reading ±20 FPM -20 to 212°F (-29 to 100°C) ±0.54°F (±0.3°C) 0 to 100% RH ±2% RH 19,999 in selected flow units N/A Process: -20 to 212°F (-29 to 100°C); Ambient: 5 to 125°F (-15 to 51°C)
N/A 4.5-digit backlit LCD N/A

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
23 DWYER INSTRUMENTS, INC. | dwyer-inst.com

TEST & DATA | SELECTION GUIDE

CALIBRATION
Pumps

SERIES HP

Output

-27 Hg to 45 psig

Range

(-0.91 to 3 bar)

Process 1/4 female NPT

Connection

Gage

1/4 female NPT

Connection

Materials N/A

CHP
-28.8 Hg to 100 psi (-0.975 to 3.4 bar) 1/8 female NPT
1/8 female NPT
Acetel plastic and anodized aluminum

A-396A
<1 in w.c. to 72 psig (5 bar) Barbed fitting or 1/8 female NPT N/A
N/A

PCHP
-28 Hg to 600 psi (-0.945 to 40 bar) 1/4 female NPT/ BSPT 1/8 female NPT/ BSPT SS fittings, anodized aluminum housing, plastic/rubber handles, and nitrile O-rings

HCHP
0 to 10,000 psi (0 to 700 bar) 1/4 female NPT/ BSPT 1/4 female NPT/ BSPT SS, polyurethane, anodized hard-coat aluminum, PTFE, and nitrile

LPCP
-5.8 psi to 5.8 psi (-0.4 to 0.4 bar) M20x1.5 or 1/4 female NPT M20x1.5 or 1/4 female NPT Ram/adapters: 316 SS, Body: Steel/ aluminum; Seals: Buna-N

BCHP
-28 Hg to 870 psi (-0.95 to 60 bar) 1/4 female BSPT (NPT available) 1/2 female BSPT
Anodized aluminum, brass, and ABS

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 24

TYPICAL APPLICATIONS | TEST & DATA

CH4

Preheater

Boiler

Air Combustion Gas

Feedwater Steam

Current/voltage signal generator used to calibrate panelmeters
The Model CSG digital signal generator is perfect for generating or simulating input signals to panel meters and process controllers. The signal generator is capable of sourcing up to 10 VDC or 20 mA in 1 VDC or 1 mA steps. The backlit digital display allows users to quickly compare the reading on the Model CSG to that of the panel meter or process controller. The signal from the Model CSG can be used to set up the upper and lower limits of the process range. It can also be used to ensure that set point and alarm functions are working properly on the panel meter or process controller.

Carbon monoxide transmitter/switch maximizes boiler efficiency while monitoring harmful products of combustion
There are several critical factors in attaining efficient combustion for boilers and other combustors. Monitoring the temperature of combustion and minimizing the amount of excess air in the system are undoubtedly essential steps. A Dwyer® Model CMS300 measures harmful CO gas bi-products of the combustion cycle in a boiler system. The switch contact in the CMS300 can be used for a local alarm indication, in addition to sending an analog output to a building control system.

FREEDOWNLOAD! Download our Air Velocity and Flow Calculator app today.
VIDEO ON

LINE

HVACmobile application

Field calibrate and certify pressure gages

For those customers in the HVAC or BAS industry, Dwyer offers the Air Velocity and Flow Calculator App available on the Google Play® store. One can easily convert velocity pressure to air velocity or air velocity to air volume. Converting velocity pressure to air volume is advantageous for effortlessly changing the pressure on your Magnehelic® differential pressure gage or manometer to velocity. Moreover, this calculator also includes air density factors from humidity levels. By utilizing the air velocity to air volume functionality, one can simplistically convert the air velocity to air flow rates from duct dimensions, with just the tap of a button.

Using the Series PCHP with a Series DPG-100, a technician can calibrate or certify process pressure gages up to 1% accurate. The Model PCHP-1 hand pump can easily supply pressures up to 600 PSI by squeezing the handle and adjusting the volume control valve. The pump has two connections to be connected with a test gage, such as the Dwyer® Series DPG-100, and a process gage, such as the Dwyer® Series 765.

25 DWYER INSTRUMENTS, INC. | dwyer-inst.com

TEST & DATA | TYPICAL APPLICATIONS

Digital manometers used to check gas pressure to a heating burner
Checking the gas pressure to a heating unit on the burner side of the regulator is a standard installation and service routine. The Dwyer® Series 475 handheld digital manometer is a low-cost, durable device that is easily transportable in a pocket or briefcase. Units are highly accurate with 0.5% full-scale accuracy. Some servicemen prefer our portable Dwyer® Magnehelic® differential pressure gage with dial type scale for field use.

Determine air velocity and temperature levels in ducts or air supply grills
The Dwyer® Series 471B digital thermo-anemometer is the ideal portable product for determining air velocity and temperature levels in ducts or air supply grills. With a push of a button, FPM and Fahrenheit readings are converted to MPS and Celsius. Readings may be stored and retrieved which allows the user greater efficiency with HVAC balancing at various locations in a building.

Handheld anemometer enables measuring duct flow measurements Quickly measure humidity and temperature levels in ambient air

Handheld anemometers are an excellent, portable tool for performing tests on HVAC system performance; however, large rotating vanes can prevent easy access to ducts. Dwyer introduces the VT-300 mini-vane thermo-anemometer to eliminate this problem. Additionally, simple keypad programming enables the user to view volumetric flow rates in CFM or CMM.

The Dwyer® Model 485B-1 thermo-hygrometer is a simple, portable device for quickly measuring humidity and temperature levels in ambient air. The dew point and wetbulb temperature readings are derived from relative humidity and temperature measurements. The Model 485B-1 is often used in agricultural applications where proper humidity and temperature levels are critical in plant or animal well being.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 26

SELECTION GUIDE | AIR QUALITY

AIR VELOCITY
Transmitters

SERIES AVUL

Service

Clean air

Range

1,000 to 4,000 FPM

(5 to 20 MPS)

Accuracy

±3 or 5% of reading

Mounting

Duct mount

Probe Length 7-41/64

Output

4-20 mA, 0-5 VDC, or

0-10 VDC selectable

Display

Optional LCD

Process

32 to 122°F

Temperature (0 to 50°C)

Limits

AVPT
Clean air 1,000 to 4,000 FPM (5 to 20 m/s) ±3 or 5% of reading Duct mount 6 or 12 0-5 VDC or 0-10 VDC
None -4 to 140°F (-20 to 60°C)

AVLV
Clean air 100 to 400 FPM (0.5 to 2 m/s) ±1 or 2% of reading Duct mount 7-41/64 4-20mA, 0-5 VDC, or 0-10 VDC selectable Optional LCD -32 to 122°F (0 to 50°C)

641*

641RM*

641B

Clean air

Clean air

Clean air

250 to 15000 FPM

250 to 2000 FPM

250 to 2000 FPM

(1.25 to 75 MPS)

(1.25 to 10 MPS)

(1.25 to 10 MPS)

±3 to 4% FS

±3 to 4% FS

±5 to 6% FS

Duct mount

Remote mount

Duct mount

6 to 36 (152 to 915 mm) 6 to 36 (152 to 915 mm) 4-1/4 (108 mm)

4-20 mA

4-20 mA

4-20 mA

Optional LED -40 to 212°F (-40 to 100°C)

Optional LED -40 to 212°F (-40 to 100°C)

Optional LED -40 to 176°F (-40 to 80°C)

HUMIDITY AND HUMIDITY/TEMPERATURE
Transmitters

SERIES
Service Accuracy RH Output Temperature Output Options Display

RHP-E/N*

RHPLC

Room

Room

±2, 3, or 5% FS

± 2 or 3% FS

4-20 mA, 0-5 VDC, 0-10 VDC 4-20mA, 0-5 VDC, 0-10 VDC

None, passive sensor, 4-20 None, passive sensor,

mA, 0-5 VDC, 0-10 VDC

4-20mA, 0-5 VDC, 0-10 VDC

RHP*

RHP with Shield

WHT

Duct or outdoor

Outdoor

Room or outdoor

±2, 3, or 5% FS

±2, 3, or 5% FS

±3% FS

4-20 mA, 0-5 VDC, 0-10 VDC 4-20 mA, 0-5 VDC, 0-10 VDC 4-20 mA, 0-5 VDC, 0-10 VDC

None, passive sensor, 4-20 None, passive sensor, 4-20 None, passive sensor, 4-20

mA, 0-5 VDC, 0-10 VDC

mA, 0-5 VDC, 0-10 VDC

mA, 0-5 VDC, 0-10 VDC

Optional LCD

None

None

None

None

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
27 DWYER INSTRUMENTS, INC. | dwyer-inst.com

AIR QUALITY | SELECTION GUIDE

CARBON MONOXIDE
Sensors

SERIES
Service Range
Housing Output
Relay Display

GSTA
Carbon monoxide or nitrogen dioxide 0 to 500 PPM CO or 0 to 10 PPM NO2 Space or duct 4-20 mA, 0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC None Optional LCD

GSTC
Carbon monoxide or nitrogen dioxide 0 to 500 PPM CO or 0 to 10 PPM NO2 Space or duct BACnet MS/TP, Modbus® RTU, Modbus® ASCII N/A Optional LCD

CMT200
Carbon monoxide 0 to 200 PPM CO
Space 4-20 mA, 2-10 VDC
N/A N/A

CMS300
Carbon monoxide 0 to 300 PPM CO
Space 4-20 mA, 2-10 VDC
(1) SPDT N/A

HUMIDITY AND HUMIDITY/TEMPERATURE
Transmitters

SERIES
Service Accuracy RH Output Temperature Output Options Display

RH-R
Duct or process ±2% FS 4-20 mA None, 4-20 mA
None

657*
Duct ±2% FS 4-20 mA 4-20 mA
None

657C*
Duct ±2% FS 4-20 mA 4-20 mA
None

HHT
Room or outdoor ±2% FS 4-20 mA None, 4-20 mA
Optional LCD

Modbus® is a registered trademark of Schneider Automation, Inc.
*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 28

TYPICAL APPLICATIONS | AIR QUALITY

Dwyer® transmitter signals precise air velocity adjustments to computer-controlled variable-speed fan motor
In variable air volume (VAV) HVAC systems, a computerized control provides precise adjustment of air volume to meet changing system needs with maximum energy efficiency. The Dwyer® Series 641 has an optional LED display for local indication of air flow. The LED display provides a quick, visual acknowledgment of proper system performance. The computer reacts to any change in velocity by signaling the motor control to increase or decrease fan speed to maintain the required velocity. The computer, taking inputs from other ambient condition sensors, will establish a new required air velocity and signal an appropriate adjustment in fan speed.

Automate your garage ventilation
Carbon monoxide and Nitrogen Dioxide are by-products released in the exhaust from gasoline and diesel powered vehicles. These gases can build up in parking garages and loading dock areas where vehicles are concentrated, creating a potentially harmful environment. Ventilation is required to purge these gasses, but running fans non-stop increases building operating costs. The Dwyer® Series GSTA and GSTC can help to offer a more efficient solution to garage ventilation by transmitting CO or NO2 concentrations via an analog output signal or digital BACnet/Modbus® communication. This signal is sent to the Building Management System and the ventilation processes can then be automated to run only when the gases are present in dangerous concentrations. For stand-alone systems, the analog signal can be sent to a Series SCD process controller to provide a closed loop control system running the ventilation fans. Using the Dwyer® Series GSTA or GSTC transmitter, ventilation will occur only when needed, reducing the cost of maintaining air quality standards.

Air velocity transmitter controls drying oven air flow
The flow of heated air is held to a constant predetermined velocity in this carefully controlled low temperature process drying oven. The constant temperature air supply is modulated by a set of inlet louvers operated by a servo-driven actuator. A Dwyer® Series 641 air velocity transmitter has an optional LED display for local indication of air flow. The LED display provides a quick, visual acknowledgment of proper system performance. The controller compares the Series 641's signal to the set point in the controller and continuously signals appropriate louver adjustments to the actuator.

Eliminate the need for Pitot tubes, orifice plates, differential pressure sensors and temperature sensors with a Series AVUL
Installing air velocity measurement systems can be a burdensome process ­ specifying Pitot tubes, static pressure tips, orifice plates, differential pressure transmitters, etc. Dwyer offers the Series AVUL air velocity transmitter to consolidate these components into one convenient instrument. The Series AVUL can be easily installed into the duct or air stream to accurately measure air flow while providing local indication as well as linear analog output. Microprocessor-based technology ensures accurate, repeatable results. The Series AVUL combines these features for simple, reliable airflow measurement without the problems associated with complex, traditional systems.

29 DWYER INSTRUMENTS, INC. | dwyer-inst.com

AIR QUALITY | TYPICAL APPLICATIONS

Temperature and humidity measurements used to optimize the growth of hogs and poultry

Accurately measure and control the humidity and temperature in office buildings

The Dwyer® Series WHT humidity transmitter and Series O-4 temperature sensors are used to control the environmental conditions on hog and poultry farms. The amount the animals eat is linked to how comfortable the environmental conditions are. Thus the temperature, humidity, amount of light and other ambient conditions are tightly controlled to insure optimal animal growth.

The Dwyer® Series RHP-E/N wall mount humidity and temperature transmitter can be combined with a DDC controller and a damper to provide comfortable working conditions in an office building. The amount of air flow entering the room is varied based on the temperature and humidity readings of the Series RHP-E/N. The compact size and mounting configuration allow this transmitter to be discretely mounted in any room.

Greatly reduce the time it takes to dry wood

Demand control ventilation

The Dwyer® Series RHP monitors the humidity and temperature in the return air ducts in wood dehumidification rooms. Large fans are used to circulate air across the room. As dry conditioned air moves across the wood, it absorbs moisture from the wood. The humidity level of the air in the return air duct is representative of how much moisture is in the wood. When the humidity in the duct declines, it signifies that less dry conditioned air is needed to be supplied to the room.

Since the number of people in a conference room or classroom varies throughout the day, the amount of conditioned air needed to properly ventilate the room varies as well. As the number of people in a room increase, the concentration of carbon dioxide in the room will also increase. The Dwyer® Series CDT, CDTR, CDTV, and CDTAcarbon dioxide transmitters measures the amount of carbon dioxide that is emitted so that the VAV control system can supply enough fresh air into the space to return the concentration of carbon dioxide in the room to normal levels.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 30

SELECTION GUIDE | FLOW

®
GENERAL PURPOSE PANEL MOUNT
Flowmeters

SERIES RMA*

Ranges

0.05 to 200 SCFH air

(5 to 2500 cc/m air);

1 to 50 GPH water

(5 to 300 cc/m water)

Accuracy

±4% FS

Body Materials Polycarbonate

Temperature 130°F (54°C)

Limits

RMB*
0.5 to 600 SCFH air (0.6 to 95 LPM air); 1 to 100 GPH water (0.06 to 6.2 LPM water) ±3% FS Polycarbonate 130°F (54°C)

RMC*
5 to 1800 SCFH air (2.5 to 850 LPM air); 0.1 to 10 GPM water (0.05 to 5 LPM water) ±2% FS Polycarbonate 130°F (54°C)

Pressure Limits

100 psi (6.7 bar)

100 psi (6.7 bar)

100 psi (6.7 bar)

Process Connection

1/8 female NPT back connections

1/4 female NPT back connections

1/2 female NPT back connections

Scale Length Metering Valve

2 (51 mm)

5 (127 mm)

Optional bottom or top Optional bottom brass

mount brass or stainless or stainless steel valve

steel valve

10 (254 mm) Optional bottom brass or stainless steel valve

VFA*

VFB*

VFC*

0.1 to 200 SCFH air

0.3 to 200 SCFH air

2.5 to 100 SCFM air

(0.06 to 100 LPM air); (0.2 to 40 LPM air);

(60 to 2800 LPM air);

0.6 to 40 GPH water 0.5 GPH to 5 GPM water 0.5 to 20 GPM water

(6 to 200 cc/m water) (0.002 to 20 LPM water) (2 to 75 LPM water)

±5% FS

±3% FS

±2% FS

Acrylic

Acrylic

Acrylic

With valve: 120°F

With valve: 120°F

120°F (48°C)

(48°C); Without valve: (48°C); Without valve:

100°F (38.6°C)

100°F (38°C)

With valve: 100 psi (6.7 With valve: 100 psi (6.7 100 psi (6.7 bar)

bar); Without valve: 150 bar); Without valve: 150

psi (10 bar)

psi (10 bar)

1/8 female NPT back 1/8 female NPT back or 1 female or male NPT

or end connections

end connections

or BSPT back or end

connections

2 (51 mm)

4 (102 mm)

5 (127 mm)

Optional bottom or

Optional bottom brass or N/A

top mount brass or

stainless steel valve

stainless steel valve

CORROSIVE MEDIA
Flowmeters

SERIES VAT*

TVA*

VA1000*

VA1500 * VAT20000* VA25000* DR10000* DR20000*

Ranges

1.19 to 79 GPH 6.34 to 79.2

0.104 to 89.2 SCFH 0.22 to 49

0.792 to 93.9

0.104 to 18.39 0.24 to 100 SCFH 0.33 to 90 SCFH

water (75 to

GPH water (400 air (49 to 42000 SCFH air (104 SCFH air (374 to SCFH air (49 to air (0.13 to 50 LPM air (0.16 to 44

5000 ml/min

to 5000 ml/min ml/m air) 0.009 to to 23100 ml/min 44300 ml/min air) 8600 ml/m air) air) 0.02 to 24

LPM air) 0.05 to

water)

water)

19.97 GPH water air) 0.028 to 27 0.087 to 21.7 GPH 0.01 to 3.32

GPH water (1.5 to 21 GPH water

(0.55 to 1260 ml/m GPH water (1.8 water (5.5 to 1370 GPH water (0.61 1500 cc/m water) (3.2 to 1300 cc/m

water)

to 522 ml/min ml/m water)

to 209 ml/min

water)

water)

water)

Accuracy

±5% FS

±5% FS

±2% FS

±2% FS

±2% FS

±2% FS

±5% FS

±5% FS

Body Materials PFA

PFA

Glass flow tube

Glass flow tube Glass flow tube

Glass flow tube Glass flow tube Glass flow tube

Temperature 250°F (121°C) 250°F (121°C) 250°F (121°C)

150°F (65°C) 250°F (121°C)

150°F (65°C) 250°F (121°C)

250°F (121°C)

Limits

Pressure

100 psi (6.7 bar) 100 psi (6.7 bar) 200 psi (13.8 bar) 100 psi (6.7 bar) 200 psi (13.8 bar) 100 psi (6.7 bar) 250 psi (17 bar) 250 psi (17 bar)

Limits

Process

1/4 or 3/8

1/4 or 3/8

1/8 female NPT 1/8 female

1/8 female NPT 1/8 female NPT 1/8 female NPT 1/8 female NPT

Connection female NPT back female NPT back back connections NPT back

back connections back connections back connections back connections

connections

connections

connections

Scale Length 5 (127 mm)

3 (75 mm)

2.5 (65 mm)

2.5 (65 mm) 6 (150 mm)

6 (150 mm)

2.5 (65 mm)

6 (150 mm)

Metering Valve N/A

Optional 6-turn 6-turn needle valve; 6-turn needle 6-turn needlevalve; 6-turn needle Optional 6-turn Optional 6-turn

needle valve

Optional 16-turn valve

Optional 16-turn valve

needle valve

needle valve

high precision valve

high precision valve

*CALIBRATION SERVICES AVAILABLE

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.

31 DWYER INSTRUMENTS, INC. | dwyer-inst.com

FLOW | SELECTION GUIDE

GENERAL PURPOSE IN-LINE
Flowmeters

SERIES LFMA*

Ranges

0.1 to 5 GPM water

(0.5 to 18 LPM water)

Accuracy

±5% FS

Body Materials Polycarbonate

Process

1/2 male NPT in-line or

Connection 90° elbow connections

Scale Length 2 (51 mm)

LFMB*
0.1 to 5 GPM water
(0.5 to 18 LPM w*ater)
±5% FS Polycarbonate 1/2 male NPT in-line or 90° elbow connections
3 (76 mm)

LFMC*
0.25 to 8 GPM water (1 to 30 LPM water) ±5% FS Polycarbonate 1/2 or 3/4 male NPT in-line or 1/2 male NPT 90° elbow connections 3 (76 mm)

LFMD*

LFME*

0.8 to 10 GPM water 1.2 to 25 GPM water

(3 to 40 LPM water)

(5 to 100 LPM water)

±5% FS

±5% FS

Polycarbonate

Polycarbonate

3/4 male or female NPT 1 male or female NPT

in-line or 3/4 male NPT in-line or 1 male NPT

90° elbow connections 90° elbow connections

3.5 (89 mm)

4.5 (114 mm)

LFMF*
2.5 to 70 GPM water (10 to 250 LPM water) ±5% FS Polycarbonate 2 male or female NPT in-line connections
5.5 (140 mm)

INDUSTRIAL
Flowmeters

SERIES

IF*

Ranges

1.2 to 250 SCFM air (35 to 7080 LPM air);

0.25 to 116 GPM water (0.95 to 439 LPM water)

Accuracy

±3% FS

Body Materials

Glass flow tube

Temperature Limits 200°F (93°C)

Pressure Limits

200 psi (13.8 bar); some models 125 psi (8.6 bar)

Process Connection 1/2, 1 or 2 female NPT back connections

Scale Length

4-3/4 (120 mm)

HF
2 to 22 SCFM air; 0.5 to 25 GPM oil; 0.05 to 116 GPM water ±4% FS Aluminum, brass, or 304 SS 240°F or 400°F (115° or 204°C) 600 psi to 6000 psi (41 to 413 bar) 1/8 to 2 female NPT back connections 1-1/2 to 2-1/4 (38 to 57 mm)

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 32

SELECTION GUIDE | FLOW

PADDLE AND THERMAL STYLE
Flow Switches

SERIES
Service Set Point Range
Wetted Materials
Temperature Limits Pressure Limits Adjustable Set Point Power Requirement Enclosure Rating Switch Type Process Connection
Agency Approvals

V4
Gases or liquids 3 to 2400 GPM (12 to 9000 LPM); 17 to 10000 SCFM (8 to 4700 LPM) Brass, 430 SS, 316 SS**
-4 to 400°F (-20 to 205°C) 5000 psig (345 bar) Yes
None
WP and EXP SPDT or DPDT 1-1/2 male NPT** or 1-1/2 male BSPT ATEX, CE, CSA, FM, IECEx, UL***

V6
Gases or liquids .03 to 10 GPM (.11 to 38 LPM); .15 to 43 SCFM (4 to 1200 LPM) Brass or 303 SS, 301 SS, 302 SS, ceramic** -4 to 400°F (-20 to 205°C) 2000 psig (138 bar) Yes
None
WP and EXP SPDT or DPDT 1/2 male NPT** or 1/2 male BSPT
ATEX, CE, CSA, IECEx, KTL, UL

V7

V10

V8

Liquids

Gases or liquids Liquids

7.5 to 58.0 GPM 2.3 to 9.5 GPM

6.8 to 58 GPM

(28.4 to 218 LPM) (8.7 to 36 LPM); (25.7 to 218 LPM)

8.8 to 50 SCFM

(250 to 1420 LPM)

301 SS

Brass or 303 SS, Brass or 316 SS,

316 SS, 301 SS, 301 SS, 302 SS,

302 SS, ceramic ceramic

250°F (121°C)

200°F (93°C)

-40 to 250°F

(-40 to 121°C)

2000 psig (138 bar) 2000 psig (138 bar) 250 psig (17.2 bar)

Yes

Yes

Yes

None

None

None

WP SPDT 1 male NPT

WP SPST 1/2 male NPT** or 1/2 male BSPT

WP SPDT 1 male NPT

CE, UL

CE, CSA, UR

CE, cURus

FS-2
Liquids 4 to 396 GPM (15 to 1500 LPM)
Tin-Bronze, brass, SS
230°F (110°C)
145 psig (10.0 bar) Yes
None
WP SPDT 1 male NPT or BSPT
CE

TDFS2
Liquids 0.5 to 10 ft/s (0.15 to 3 m/s)
316 SS
140°F (60°C)
300 psig (20.67 bar) Yes
9-24 VDC
NEMA 4X (IP65) 1 NO NPN, 1 NC NPN 1 male NPT
CE

**Other options available, contact factory ***No housing option (-NH) has no approvals

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 33 DWYER INSTRUMENTS, INC. | dwyer-inst.com

FLOW | SELECTION GUIDE

PISTON STYLE
Flow Switches

SERIES
Service
Set Point Range

P2
Gases or liquids
.05 to 1 GPM (.2 to 3.79 LPM); .42 to 5 CFM (11.9 to 141 LPM)

P3
Liquids
.25 to 2 GPM (.95 to 7.57 LPM)

P1
Liquids
.1 to 1.5 GPM (.38 to 5.7 LPM)

P8
Liquids
.25 to 2 GPM (.95 to 7.57 LPM)

GVS
Liquids
1 to 8 GPM (3.8 to 30.3 LPM)

Wetted Materials
Temperature Limits Pressure Limits
Adjustable Set Point Power Requirement Enclosure Rating Switch Type Process Connection Agency Approvals

PPE and PS, epoxy,

Polypropylene, PPS

Brass, polysulfone, 316

316 SS

composite, 316 SS,

SS, fluoroelastomer,

fluorocarbon

epoxy

0 to 212°F

0 to 212°F

-20 to 225°F

(-18 to 100°C)

(-18 to 100°C)

(-29 to 107°C)

150 psig (10.3 bar) @

125 psig (8.6 bar) @

1000 psig (69 bar)

70°F (21°C); 50 psig

70°F (21°C); 50 psig (3.4

(3.4 bar) @ 212°F (100°C) bar) @ 212°F (100°C)

No

No

No

None

None

None

GP SPST, NO 1/4 male NPT
CE

GP SPST, NO 3/8 male NPT or 1/4 Quick Disconnect CE

GP SPDT 1/4 female NPT
CE

Brass, PPS composite, epoxy, 316 SS, fluorocarbon -20 to 275°F (-28 to 135°C) 1500 psig (103 bar)
No
None
GP SPST, NO 3/8 male NPT
CE

Bronze, TFE, 316 SS, fluoroelastomer, ceramic -20 to 200°F (-29 to 93°C) 400 psig (27 bar) @ 100°F (38°C)
Yes
None
GP SPDT 1 female NPT
CE

AFS
Gases or liquids 1 to 75 SCFM @ 5 psi (28 to 2123 LPM @ 5 psi); .5 to 20 GPM (2 to 75.5 LPM) 316 SS, fluoroelastomer, epoxy, brass -20 to 300°F (-29 to 149°C)** 1000 psig (69 bar)
Yes
None
GP SPDT 1/2 female NPT
CE

**Other options available, contact factory

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 34

SELECTION GUIDE | FLOW

PADDLE WHEEL/TURBINE/MULTI-JET
Flow Transmitters

SERIES
Service Wetted Materials Accuracy Temperature Limits Pressure Limits Pipe Size

PFT
Liquids Brass or 316 SS ±1% FS 212°F (100°C) 400 psig (27.6 bar) 1-1/2 to 40 (38.1 to 1016 mm)

Flow Rate Output

1.2 to 25 ft/s (0.37 to 7.62 m/s) 4-20 mA or pulsed

SFI-100T
Liquids Brass ±5% FS -20 to 212°F (-29 to 93°C) 125 psig (8.6 bar) 1/2 or 3/4 (12.7 mm or 19 mm)
2 to 35 GPM (7.6 to 132.5 LPM) Pulsed

DFMT
Liquids PVDF ±1.5% FS 194°F (90°C) 145 psi (1.0 mPa) 3/8, 1/2, 3/4, 1, 1-1/2 or 2 (9.5 mm, 12.7 mm, 19 mm, 25.4 mm, 38 mm or 50.8 mm) 0.44 to 176.11 GPM (0.1 to 40 m3/h) 4-20 mA or pulsed

FLOW
Water Meters

SERIES
Service
Wetted Materials

WMH
Water
Body and couplings: Brass; Measuring chamber: ABS plastic

Accuracy

WMH-A-X-XX: Transitional flow: ±3%;

Nominal flow: ±1.5%

Temperature Limits 190°F (88°C)

Pressure Limits 150 psi (10 bar)

Pipe Size

5/8 x 1/2 to 2 (15 mm to 50 mm)

Flow Rate

20 to 160 GPM (3 to 30 m3/h)

Output

Pulsed

WMT2
Water Body and couplings: Brass; Measuring chamber: ABS plastic
±2% FS
104°F (40°C) 232 psi (16 bar) 1/2 to 2 (12.7 mm to 50 mm) 20 to 160 GPM (3 to 30 m3/h) Pulsed

WPT
Water Body: Nylon 66; Couplings: Nylon 66, 1-1/2 (40 mm) sizes lead free ECO BRASS®; Measuring chamber: ABS plastic WPT-A-X-XX: Transitional flow: ±3; Nominal flow: ±1.5% 122°F (50°C) 150 psi (10 bar) 5/8 x 1/2 to 1-1/2 (15 mm to 40 mm) 20 to 160 GPM (3 to 30 m3/h) Pulsed

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 35 DWYER INSTRUMENTS, INC. | dwyer-inst.com

FLOW | SELECTION GUIDE

ULTRASONIC
Flow Transmitters

SERIES

UFM*

Service

Liquids

Wetted Materials N/A

Accuracy

±3% of reading

Temperature Limits 185°F (85°C)

Pipe Size

0.98 to 4.62 (24.89 to 117.35 mm)

Flow Rate

0.33 to 32.8 ft/s (0.1 to 10 m/s)

Output

4-20 mA and pulsed

Enclosure Rating NEMA 4X (IP66)

PUB*
Liquids N/A ±2% FS 275°F (135°C) 0.5 to 78 (13 to 2000 mm) 0.33 to 65.62 ft/s (0.1 to 20 m/s) 4-20 mA, 0-16 mA or 0-20 mA and pulsed NEMA 4X (IP66)

FLOW
Heat Meters

SERIES
Services

TUF
Clean, compatible liquids

Wetted Materials Brass and 316L SS

Range

Refer to flow rate below

Accuracy

BTU: EN1434/CJ128 CLASS 2;

Flow: ±(2+(0.02 Qp/Q))

Temperature Limits 36 to 203°F (2 to 95°C)

Pressure Limits

362 psi (25 bar) (model dependant)

Pipe Size

1/2 to 8 (15 to 200 mm)

Flow Rate

0.1 to 881 GPM (0.5 to 3333 LPM)

Output

BACnet, Modbus® or M-BUS (model selectable)

IEFB*
Compatible clean or dirty non coating, conductive liquids 316 SS, polystyrene and Silicon 0 to 20 ft/s (0 to 6 m/s) BTU: RTD and calculator meet EN1434 Class B; Flow: 1% of reading or 1% FS (model dependant) 32 to 250°F (0 to 121°C) 400 psi (27.6 bar) 4 to 36 (101 to 914 mm) (model dependant) Refer to velocity range above (1) Analog (1) Pulse/frequency (1) Empty Pipe detection/ min. or max velocity trigger (1) Reverse flow pulse output indication (1) BACnet or Modbus®

Modbus® is a registered trademark of Schneider Automation, Inc.
*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
DWYER INSTRUMENTS, INC. | dwyer-inst.com 36

SELECTION GUIDE | FLOW

ELECTROMAGNETIC, IN-LINE/INSERTION
Flow Transmitters

SERIES
Service Wetted Materials Accuracy Temperature Limits Pressure Limits Pipe Size Flow Rate Output

UFB*
Liquids N/A ±2% of reading 275°F (136°C) N/A 0.05 to 79 (13 to 2000 mm) 0.33 to 33 ft/s (0.1 to 10 m/s) 4-20 mA, 0-16 mA or 0-20 mA

MFS
Liquids 316 SS ±2% of reading 194°F (90°C) 232 psi (16 bar) 1/2 or 1 (12.7 or 25 mm) 0.25 to 52.8 GPM (1 to 200 LPM) 4-20 mA or pulsed

IEF*
Liquids 316 SS 0.5% of reading, 1% of reading or ±1% FS 15 to 250°F (-9 to 121°C) 400 psi (27.6 bar) 4 to 36 (101 to 914 mm) 0 to 20 ft/s (0 to 6 m/s) (1) Analog: 4-20 mA, 0-5 V, 0-10 V or 2-10 V (display selectable); (1) Pulse/Frequency: 0-15 V peak pulse, 0-500 Hz or scalable pulse output (display selectable); (2) Alarm: (1) Empty pipe detection or minimum/ maximum velocity, (display selectable); (1) Reverse flow output indication

*CALIBRATION SERVICES AVAILABLE These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications.
37 DWYER INSTRUMENTS, INC. | dwyer-inst.com

FLOW | TYPICAL APPLICATIONS

Switch Box

Differential Pressure Switch

Motor

Generator

LO HI
Purge Gas Supply

Rate-Master® Flowmeters

Designers of a bio-medical incubator rely on a Dwyer® flowmeter to control CO2 flow

Flowmeters and/or differential pressure switches monitor vital purge gas flow to motors, switchgear, instruments

This low temperature incubator with CO2 atmosphere is used in bio-medical applications, such as short term blood work and long term tissue culture studies. CO2 is introduced at a high initial purge rate controlled by a timer. After the purge period, a Dwyer® Visi-Float® flowmeter with a metering valve is utilized to adjust and monitor the CO2 flow in cubic centimeters per minute. The Visi-Float® flowmeter provides the reliability and accuracy needed to complement the host of high performance features designed into this incubator.

To purge motors, generators, switchgear, and industrial instrument cases, Dwyer® flowmeters are installed in the supply line to indicate a flow of air, manufactured inert gas, or nitrogen to these devices. The flowmeters (with valves) allow maintenance personnel to set the flow quickly and recheck anytime to make sure proper flow continues. A Dwyer® differential pressure switch can also be used to monitor proper flow on a continuous basis and provide a signal or alarm if purge gas flow fails. Such an optional switch is shown above, monitoring proper flow of purge gas to the switchbox as a function of pressure drop across the flowmeter. The purging of electrical equipment in hazardous areas may require more extensive control and monitoring devices.

Metering valves on Dwyer® flowmeters control air/gas intake on permanent air pollution analyzers

Operator uses Mini-Master® flowmeter to verify air flow into portable dust monitor

Regulations regarding air pollution levels require continuous monitoring a source and ambient pollutants in areas where noxious gases are generated. Ambient air quality samplers utilize either Visi-Float® or Rate-Master® flowmeters to establish the proper flow of sample or carrier gases into the analyzer. Top mounted metering valves are recommended for flowmeters used in vacuum service to maintain specified accuracy.

The small size, accuracy, and low cost of the Dwyer® Mini-Master® flowmeter lends itself perfectly to use in this portable, battery-operated dust monitor. Using a light scattering electronic sampler, a small vacuum pump draws air through the flowmeter into the sampling chamber, and the flowmeter verifies the proper volume of sample air flow. Readout is digital and directly in dust weight per cubic meter of air.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 38

TYPICAL APPLICATIONS | FLOW

Brass body gage measures water flow rates
A Dwyer® brass body Capsuhelic® differential pressure gage, required for water service to prevent corrosion damage to the gage, is used in conjunction with a Dwyer® Series DS-300 averaging Pitot tube. The Capsuhelic® gage provides a basic method of measuring water flow rates. As a guide in selecting the appropriate Capsuhelic® gage range, the designer can consult data provided with the DS-300 averaging Pitot tube. This relates differential pressure in inches of water column to the water flow in gallons per minute for the pipe size involved. The gage can be calibrated directly in GPM if desired. Bleed fittings installed in the top ports of the gage are recommended to facilitate removal of air from the system.

Flotect® flow switch ensures cooling water circulation before air conditioning compressor motor starts and Series TUF monitors thermal energy loss from cooling tower to air condenser
Large air conditioning and refrigeration systems which include water cooled condensers require that the water must circulate through the condenser and cooling tower in sufficient volume before the compressor is started. Here the W.E. Anderson® Flotect® flow switch is connected to the compressor control circuit to prevent starting or to shut down the compressor control circuit if the flow of cooling water falls below that required for proper operation. A dual Flotect® switch (available as an option) will also trigger a remote alarm to signal the operator of the shutdown as soon as it occurs. The Series TUF monitors the water flow as well as the temperature of the water going into and out of the air conditioning unit in order to calculate the cooling efficiency of the air conditioning unit.

When main pump fails, Flotect® flow switch transfers to standby pump to maintain vital fluid circulation
When proper fluid circulation in a system is critical, the W.E. Anderson® Flotect® flow switch will automatically start a standby pump should the main pump fail. The flow in the main path of the parallel system illustrated keeps the Flotect® flow switch in an open position. When the main pump fails, the flow will cease. The flow switch then closes, starting the standby pump.

W.E. Anderson® Midwest Sight Flow Indicator reveals flow or stoppage
In this gravity feed system delivering liquid fertilizer to portable tanks, a Series SFI-100 MIDWEST sight flow indicator was installed. The operator can see the rotating vanes to check for adequate flow at any time.

39 DWYER INSTRUMENTS, INC. | dwyer-inst.com

FLOW | TYPICAL APPLICATIONS

Flows of air and gases used in a special furnace are controlled by Dwyer® flowmeters

Durable dual-column flowmeter adds value for physicians and oral surgeons

A total of eleven Dwyer® Rate-Master® flowmeters function in the design of this sophisticated conveyor belt furnace used in manufacturing electronic devices. The flowmeters provide precise adjustment and monitoring of the flows of air and gases into the various portions of the furnace, which allow it to perform different operations, such as decarburizing and oxidizing, metallic package sealing, glass package sealing, and glass-to-metal sealing.

Physicians and oral surgeons who use anesthesia or analgesia in their offices on an occasional basis require a system that is reliable but small and portable. One such system employs special Dwyer® dual-column Visi-Float® flowmeters to meter and monitor precise flows of nitrous oxide and oxygen to the patient. In addition to meeting the performance level demanded by this application, the Visi-Float® flowmeters are durable and attractive complements to this important and visible medical device.

Salt corrosion test cabinet includes a Dwyer® flowmeter for adjustment of bubbler air flow
Prior to atomizing a heated salt solution to produce a fog inside this corrosion test cabinet, compressed air is bubbled through a heated water column to properly heat and humidify the air. A Dwyer® Visi-Float® VFA flowmeter, as part of the system, provides precise adjustment of the bubbler air flow to meet test standards.

Measuring air velocity with an orifice plate
In this set-up, the Magnehelic® gage measures higher air velocities as a function of the pressure drop across a sharp-edged orifice plate in the pipe. The pressure drops can be converted to air velocity using orifice plate data supplied by the manufacturer. Details regarding available sizes, ranges, installation, and limitations are available from orifice plate manufacturers and from standard handbooks. A Dwyer® Durablock® inclined manometer or Photohelic® differential pressure switch/gage can also be used. In addition to the visual reading gage, the Photohelic® switch/gage provides an alarm signal or shutdown control function. Pressure sensing taps should be located on the side or top of the pipe or duct to prevent condensation from draining into sensing lines or gages.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 40

SELECTION GUIDE | LEVEL

LIQUID
Level Switches

SERIES
Service
Wetted Materials Temperature Limits

L4
Liquids
316 SS 275°F (135°C)

L6
Liquids
304 SS 220°F (105°C)

L8
Liquids
316 SS 212°F (100°C)

Pressure Limits Process Connection

2000 psig with option bar 1-1/2 or 2-1/2 male NPT

2000 psi (138 bar)

150 PSIG (10.34 bar)

1 male NPT or 1 female NPT with 1 male NPT

external float

Min. Specific Gravity 0.7

Output

SPDT or DPDT

Mounting

Horizontal with optional vertical

Orientation

Agency Approvals ATEX, CE, CSA, FM, IECEx,UL

0.9 SPDT or DPDT Horizontal

0.6 SPDT Horizontal

ATEX, CE, CSA, FM, IECEx, KTL, CE, cURus UL

LIQUID
Level Switches

L10
Liquids 304 SS 200°F (93°C)
2000 (137.137.8 bar) 1 male NPT
0.9 SPST Horizontal CSA, UR

SERIES
Service
Wetted Materials Temperature Limits
Pressure Limits Process Connection

F7-MS
Liquids

123
Liquids

Brass or 316 SS Buna-N floats: 180°F (82.2°C) in oil, 230°F (110°C) in water; SS floats: 300°F (148.9°C) 750 psi (51.7 bar) 1/2, 1-1/4, 2, or 3 150# flange

304 SS 365°F (185°C)
150 psig (10.34 bar) 1 female NPT

102
Liquids Cast iron 425°F (218°C)
400 psig (27.6 bar) 1 female NPT

CFS2
Liquids Polypropylene 122°F (50°C)
14.5 psi (1 bar) N/A

FSW2
Liquids Polypropylene 122°F (50°C)
29 psi ( 2 bar) N/A

Min. Specific Gravity 0.55

Output

SPST or SPDT

Mounting

Vertical ±30°

Orientation

Agency Approvals N/A

0.88 SPDT, DPDT or (2) SPDT Vertical
CSA, UL

0.6 SPDT, DPDT or (2) SPDT Vertical
UL

0.6 SPST or SPDT Horizontal
CE, UL/CSA

0.6 SPST or SPDT Vertical
CE

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 41 DWYER INSTRUMENTS, INC. | dwyer-inst.com

LEVEL | SELECTION GUIDE

LIQUID
Level Switches

SERIES
Service
Wetted Materials Temperature Limits

F7-MLK
Liquids
Buna-N/Brass 221°F (105°C)

Pressure Limits Process Connection

150 psig (10 bar) 2 male NPT

Min. Specific Gravity 0.45

Output

SPST

Mounting

Vertical

Orientation

Agency Approvals N/A

*Varies per product
LIQUID
Level Switches

F6 & F7
Liquids

F6 & F7
Liquids

F7-MM
Liquids

Polypropylene, 316 SS, or Buna-N* Polypropylene, 316 SS, or Buna-N* Brass or 316 SS

176°F (80°C) or higher*

176°F (80°C) or higher*

180°F (82.2°C) or higher*

50 psig (3 bar) or higher* M16x2, 18 male NPT, 1/2 male NPT, 3/4 female NPT, or 3/8-24 UNF-2A*

15 psig (1 bar) or higher* 1/8 or 1/4 male NPT*

0.45 or higher* SPST Horizontal

0.45 or higher* SPST Vertical

N/A

CE, UL*

1000 psi (68.95 bar) 1/8, 3/4, or 1 male NPT, 3-5/8 flange, 1-5/16-12UNF-2A, 3/8-24 thread, or 2 male NPT with 1/2 conduit 0.45 SPST Vertical
N/A

SERIES
Service
Wetted Materials Temperature Limits

OLS
Liquids

B-190
Liquids

316 SS, Polysulfone or PFA 316 SS

200°F (93.3°C)

200°F (93.3°C)

CLS2
Liquids, powder, bulk materials 316 SS 185°F (85°C)

CLS1
Solids, liquids, slurries
CPVC 240°F (116°C)

Pressure Limits Process Connection

1000 psig (69 bar) 1/2 male NPT

Min. Specific Gravity N/A

Output

NPN open collector

Mounting

Any position

Orientation

Agency Approvals N/A

125 psig (8.6 bar) 4 125 # cast iron flange
0.5 SPST or SPDT Vertical UL

365 psi (25 bar) 3/4, 1, or 1-1/2 male NPT or BSPT or 1-1/2 or 2 sanitary clamp

30 psig (2.06 bar) 1 male NPS

N/A DPDT Vertical or horizontal

N/A SPDT Vertical or horizontal

CE, cULus

N/A

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 42

SELECTION GUIDE | LEVEL

BULK
Level Switches

SERIES
Service

CLS2
Liquids, powder and bulk

Sensing Technology Capacitance

Wetted Materials

316 SS

CLS1
Liquids, slurries, powder and bulk Capacitance
CPVC

VRLS
Powder and bulk
Vibrating rod
304 SS

TFLS
Powder and bulk
Vibrating tuning fork
316 SS

CTF
Powder and bulk
Vibrating tuning fork
304 SS

Temperature Limits 185°F (85°C)

Pressure Limits

365 psi (25 bar)

Process Connection 3/4, 1, or 1-1/2 male NPT

or BSPT or 1-1/2 or 2

sanitary clamp

Output

DPDT

Mounting Orientation Vertical or horizontal

Agency Approvals CE, cULus

240°F (116°C) 30 psig (2.06 bar) 1 male NPS
SPDT Vertical or horizontal N/A

SUBMERSIBLE
Level Transmitters

176°F (80°C) 150 psi (10 bar) 1 male NPT
SPDT Vertical or horizontal N/A

176°F (80°C) 145 psig (10 bar) 1-1/2 male NPT
SPDT Vertical or horizontal N/A

212°F (100°C) 600 psi (40 bar) 1 male NPT
PNP/NPN Vertical or horizontal N/A

SERIES

SBLT2/SBLTX

Service

Liquids

Wetted Materials 316 SS

Temperature Limits 150°F (66°C)

Pressure Limits Accuracy

2x FS ±0.25% FS

Range

0 to 300 psi (10 to 693 ft w.c) (3.2 to 211 m w.c)

Output

4-20 mA

Agency Approvals SBLT2: CE SBLTX: CE, cULus

MBLT
Liquids 316 SS 176°F (80°C)
2x FS ±0.25% FS
0 to 300 psi (10 to 693 ft w.c) (3.2 to 211 m w.c)
4-20 mA or 0 to 5 V
CE

PBLT2/PBLTX
Liquids 316 SS PBLT2: 180°F (82°C) PBLTX: 176°F (80°C) 2x FS ±0.25% FS
0 to 300 psi (10 to 693 ft w.c) (3.2 to 211 m w.c)
4-20 mA
PBLT2: CE PBLTX: CE,cULus

FBLT
Liquids 316 SS 176°F (80°C)
2x FS ±0.25% FS
0 to 300 psi (10 to 693 ft w.c) (3.2 to 211 m w.c)
4- 20 mA
CE

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. X43XX DWYER INSTRUMENTS, INC. | dwyer-inst.com

LEVEL | SELECTION GUIDE

BULK
Level Switches

SERIES
Service

DBLM
Powder and bulk

Sensing Technology Rotating paddle

Wetted Materials

Polycarbonate

PLS2
Powder and bulk
Rotating paddle
304 SS

Temperature Limits 140°F (60°C)

Pressure Limits

N/A

Process Connection 3/4 male NPT, optional

flange and 1-1/4 to 3/4

reducer

Output

SPDT

Mounting Orientation Vertical or horizontal

Agency Approvals CE

176°F (80°C) 11.6 psi (0.8 bar) 1-1/4 male NPT
SPDT Vertical or horizontal CE, FM

PLS
Powder and bulk

ULTRA-MAGTM
Powder and bulk

Rotating paddle 316 SS
300°F ( 148.9°C) 30 psig (2.07 bar) 1-1/4 male NPT, optional flange

Magnetic linkage and diaphram Aluminum or 304 SS with urethane, Buna-N, PTFE, silicone rubber, polyester, fluoroelestomer, white Buna-N or EPDM diaphragm 350°F (176°C) 60 psig (4.14 bat) 8-3/8 (212.73 mm) diameter bolt hole circle

SPDT or DPDT Vertical or horizontal cUL

SPDT Vertical CSA, UL

CAPACITIVE, ULTRASONIC AND FLOAT
Level Transmitters

SERIES

CRF2

Service

Liquids, powders, bulk material

Wetted Materials 316 SS

Temperature Limits Ambient: 185°F (85°C);

Process: 250°F (121°C)

Pressure Limits 100 psi (6.9 bar)

Accuracy

±0.25% FS

Range

12 to 30 ft (3.7 to 9.1 m)

Output

4-20 mA

Agency Approvals N/A

CLT
Liquids Brass 180°F (82°C) in water, 230°F (110 °C) in oil, 230°F (110°C) SS floats 150 psig (10 bar) ±1 mm
Options from .5 to 68 ( 0.01 to 1.73 m)
4-20 mA or 0-5 V N/A

ULT
Liquids 303 SS 140°F (60°C)
30 psi (2 bar) ±0.2% FS
0 to 24.6 ft (0 to 7.5 m) or 0 to 32.8 ft (0 to 10 m)
4- 20 mA CE, FM

ULSS/ULSM/ULSL
Fluids/liquids PVDF, FKM 140°F (60°C)
30 psi (2 bar) ULSS: ±0.125 (3 mm); ULSM/ULSL: ±0.2% FS ULSS: 0 to 4.1 ft (0 to 1.25 m); ULSM: 0 to 9.8 ft (0 to 3 m); ULSL: 0 to 18 ft (0 to 5.5 m) 4-20 mA CE

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 44

TYPICAL APPLICATIONS | LEVEL

Proximity® Series PLS is used to indicate level status in pneumatic conveying systems

Mercoid® pump controller with level transmitter control pumps in wastewater lift stations

Pneumatic conveying systems use air to transport powder and dry bulk solids through conveying lines. The air is pressurized by positive pressure or vacuum to move the product through the lines into and out of silos, transporters, and receivers. Typical applications have high and low level indication in the storage bins to control the flow of product in or out. The Series PLS is perfect for level use in these storage bins. It has a rotating paddle that is inserted into the bin. As the product level builds up in the bin it stops the paddle from rotating and triggers the level output. The Series PLS is great for this application as it is not affected by pressure changes in the bin.

Lift stations are used to transmit wastewater to the treatment facility. Wastewater is transmitted by gravity feed so it has to be continually elevated to provide height to generate the flow. Lift stations are pits located at points in the wastewater system to collect the wastewater that usually have two submersible pumps. Wastewater in the lift station is pumped out to a higher level from where it can flow on to the next lift station or to the treatment facility. The Mercoid® Series MPC pump controller is used with the Series PBLT level transmitter to control the level in the lift station. The Series PBLT is a level transmitter that is submersed in the tank and sends a linear output of the height of wastewater above it. The Series MPC takes the height input and controls the pumps according to how it has been programmed.

Grain hopper level controlled by Series PLS Paddle Level Switch
The supply of grain pneumatically conveyed to this dispensing hopper is controlled by two Proximity® Series PLS paddle level switches. When the grain level falls to the low limit switch, the supply is turned on until the hopper fills to the level of the high limit switch which turns off the supply. Since grain dust is explosive, the explosion-proof Series PLS provides the required safety protection. The Series PLS is a paddle level switch and is not affected by the varying pressure in the hopper due to the cycling of the pneumatic conveying system.

Custom level sensing devices are built to meet each customer's specific requirements, providing visual indication, continuous measurement, and point level control
To meet various tank level measuring needs, Dwyer Instruments, Inc. offers customconfigured products built to customer specifications that provide visual indication, continuous level measurement, and multiple point level measurement. Series VR or MVR View-Rite Level Indicators are a safe way to keep the process isolated while providing true visible indication. Unlike sight glasses, which can crack or break, View-Rite Indicators contain liquids entirely within their stainless steel enclosure. For continuous level measurement needs, the Series CLT uses reed switch technology to offer a more economical solution than expensive ultrasonic, submersible or RT transmitters. Lastly, the Series F7-MQ can be used in virtually any tank to indicate high and low alarms or to control pumps and valves.

45 DWYER INSTRUMENTS, INC. | dwyer-inst.com

LEVEL | TYPICAL APPLICATIONS

Mercoid® displacer type level control is ideal for controlling industrial Low level float switch enables sensing in air conditioner drip pans

sump pumps

and other shallow level applications

Industrial sumps and other underground tanks are ideal applications for top-mounted Mercoid® displacer type level controls. Easily installed, these controls use porcelain displacers that do not float on the surface of liquids, but are suspended on a coil spring and cable. As the liquid in the tank reaches the level of the upper displacers, their weight decreases by an amount equal to the liquid displaced, allowing the spring to move the cable upward, actuating the switch and the pump is turned on. As the liquid level falls below the upper displacers they move only a small amount, staying within the switch deadband until the liquid level falls to the center of the bottom displacer. At this point the switch is deactivated stopping the pump. The pump will remain deactivated until the water level rises to the upper displacers, repeating the cycle. The displacers are not affected by turbulence, pressure or chemicals and are excellent for tanks with viscous or dirty liquids. The level differential is easily adjusted by repositioning of the displacers on the 316 SS cable.

Standard float switches require at least an inch of liquid to attain enough buoyancy to switch. This can be a problem in applications where low level sensing is required. The hat-shaped design of the W.E. Anderson® Series F7-LL provides necessary buoyancy for switching in only 5/8 of water. This is essential for air conditioner drip pans, low level sumps, and drains. The Series F7-LL is also ideal for low alarms, where running the process dry can result in catastrophic failure.

Series 3500

Water Level

Heat And Gases Of Combustion

Series 123

Internal Furnace

Mercoid® Series 123 level controls provide high and low alarm on large de-aerator tank

W.E. Anderson® Series OLS indicates level in heavy equipment radiator

Liquid level in the external piping equals level in the tank. When level rises to high limit, float in upper Series 123 is lifted, actuating switch to sound high level alarm. When level drops to low limit, lower Series 123 sounds low level alarm. In addition, a Series 3500 transmitter monitors the flow at the feedwater outlet. This helps to measure the efficiency of the de-aerator system.

Many types of heavy industrial equipment use a liquid cooling system for the motor. A vibratory trench roller is a machine that compacts sub-bases for roads, parking lots, etc., and is an example of the type of equipment that would utilize this system. This machine incorporates a radiator cooling system. In the system, cooling liquid circulates through the engine preventing it from over heating. As the engine is cooled the cooling fluid heats up. The fluid returns to the radiator to cool down before being circulated through again. If there is not enough cooling fluid in the system the engine will not be cooled enough and damage will occur. A W.E. Anderson® Series OLS optical level switch is installed as a low level alarm. The level alarm is signaled by the Series OLS before the cooling fluid gets to a critical low level, warning the operator of the problem. The Series OLS uses an optical detection system superior for this application as float controls may trip from machine vibration. Also the compact insertion length is ideal for a small radiator.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 46

SELECTION GUIDE | PROCESS CONTROL

PANEL METERS
Displays

SERIES
Display
Panel Size Display Units Input Signal
Output

SPPM2
Graphical full color TFT

SPPM
Graphical full color TFT

4.3 diag. User defined 4 analog (0-50 mA, or 0-40 VDC), 8 digital I/O 2 digital I/O, 4 PWM

2.4, 2.8, 3.5 diag. User defined 0-50 mA, or 0-40 VDC
None

DPM

DPMX

3-1/2 digit, or 4-1/2 digit, 7 segment 3-1/2 digit, 7 segment backlit LCD

backlit LCD (amber, green or red) (red)

2-3/8 by 1-1/8

10-19/32 by 4-5/32

None, °F, °C, %, psi, V, A, KW, PF None

4-20 mA, 0-200 mVDC, 0-5 VDC, 4-20 mA, 0-200 mVDC, 0-5 VDC,

0-10 VDC

0-10 VDC

None

None

SWITCHES AND TRANSFORMERS
Current Sensors

SERIES
Type
Case Range Output

SCS
Current switch
Solid or split core 0.15 A to 200 A 1 A @ 30 VAC/DC NO solid state output; Optional 10 A @ 260 VAC (5 A @ 30 VDC) SPST relay

MCS
Miniature switch
Solid core or terminal 0.5 to 50 A or 0.01 to 1 A 0.3 A @ 130 VAC/DC NO output

CCS
Current switch

MSCS
Miniature switch

Solid or split core 0.5 to 200 A 0.3 A @ 135 VAC/DC NO output or 1 A @ 240 VAC NO output

Split core 0.15 to 60 A (0.15 A fixed set point) 1 A @ 30 VAC/DC NO solid state output

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 47 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PROCESS CONTROL | SELECTION GUIDE

PANEL METERS
Displays

SERIES
Display
Panel Size Display Units Input Signal
Output

LCI132
4 digit, 7 segment LED (red)
1/32 DIN None V (DC), mA (DC) or V (AC), A (AC/DC) None

PM
2 - 6 digit, 7 segment LED (red)
1/8 DIN User defined mA, V DC, pulse, open collector, NPN, PNP, switch contact None, 4-20mA, or Relay

LPI
4 digit LCD or LED
Stand alone None 4-20 mA, Thermocouple, or RTD
None

SWITCHES AND TRANSFORMERS
Current Sensors

SERIES
Type
Case Range Output

SSCS
Current switch with set point based on motor HP Split core 1 to 100 HP 1 A @ 30 VAC/DC NO solid state output; Optional 10 A @ 260 VAC (5 A @ 30 VDC) SPST relay

CCT40/50
Current transformer
Solid or split core 10/20/50 A or 100/150/200 A 0-5 VDC, 0-10 VDC, or 4-20 mA

CCT60/70
Current transformer
Solid or split core 10/20/50 A or 100/150/200 A 4-20 mA, true RMS

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 48

SELECTION GUIDE | PROCESS CONTROL

POWER SUPPLIES AND TRANSFORMERS
Power Converters

SERIES
Input Voltage
Output Voltage Output Current

APT
24 VAC, 120 VAC, 240 VAC, 120/208/240/277 VAC, 120/208/240/277/480 VAC, 50/60 Hz 24 VAC
20, 40, 75, 100, 150 VA

A-700
100/120/220/230/240 VAC ±10%.
47 to 63 Hz

BPS
24 VAC/VDC 50/60 Hz

SCD-PS
120 to 240 VAC/VDC, 50/60 Hz

24-28 VDC regulated Options from 0.5 A to 4.8 A

1.5-27 VDC (full wave rectified and 24 VDC ±3%

regulated) adjustable 1.5-29 VDC

0.5 A or 1.5 A

1 A

POWDER, BULK, DUST COLLECTION, AND PNEUMATIC CONVEYING SENSORS
Particulate Sensors

SERIES
Wetted Materials Process Temperature Limit Pressure Limit Output

PMT2
316L SS, silicone, and PTFE -40 to 248°F (-40 to 120°C)
30 psi 4-20 mA

PMS
316 SS and PFA or 316 SS and ceramic 250°F (121°C), 450°F (232°C), 800°F (426°C), or 1200°F (649°C) 10 or 100 psi pA

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 49 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PROCESS CONTROL | SELECTION GUIDE

DUST COLLECTOR PULSE VALVE CONTROLLERS
Timers

SERIES
Output Channels
Input

SVT
2, 3, 4, 5,or 6; up to 60 with expansion board. Housing includes pilot solenoid valves
Dry contact

DCT500A
4, 6, or 10
Dry contact

Power Size

90-240 VAC or 24 VAC/ DC
See catalog page

102-132 VAC 4-7/8 by 6-3/4

Approvals CE

CE, cULus

DCT500ADC
4, 6, or 10
Dry contact 10-35 VDC 4-7/8 by 6-3/4 CE

DCT600
4, 6, 10, 22, or 32
Dry contact 85-270 VAC
4-7/8 by 6-3/4 or 6-7/8 by 8-3/4 CE, cULus

DCT1000
6, 10, or 22; up to 255
with expansion board

DCT1000DC
6, 10, or 22; up to 255
with expansion board

Dry contact or integral pressure sensor 85-270 VAC

Dry contact or integral pressure sensor 10-30 VDC

6-7/8 by 8-3/4 cULus

6-7/8 by 8-3/4 CE

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 50

TYPICAL APPLICATIONS | PROCESS CONTROL

Monitor the test environment for accurate laboratory tests
The Love Controls® Model LCR20 dual pen circular chart recorder can be used to monitor the humidity and temperature in an environmental chamber. The 10 chart size makes it easy to see the blue and red pen markings on the chart paper. The recorder takes in most common thermocouples and process inputs for both channels. It is recommended that the LCR20 be used with a Dwyer® RHP series humidity / temperature transmitter for best results.

Dust Collector Timer Controller shows filter condition in dust collector
This portable dust collector can be rolled from job to job in an industrial building. An operator places the large diameter collection hose where it is needed and dust is collected by filters located inside the access doors on the units side. The top mounted blower draws air through the filters. To monitor the pressure drop across the filters, the manufacturer supplies a Magnehelic® differential pressure gage. When the pressure drop due to dust build up on the filter indicates that cleaning is necessary, the DCT500A dust collector timer controller is manually activated to initiate a cleaning cycle which involves solenoid valves releasing pulses of air. This process removes the dust from the filters where it drops into a storage bin. A Dwyer® Minihelic® differential pressure gage can be used instead of the Magnehelic® gage, and, if automatic cleaning is required, a Photohelic® differential pressure switch/gage can provide the electrical contact to actuate the cleaning cycle when the pressure drop reaches the preset limit.

Button Data Logger monitors food and beverage temperature in refrigerated transport vehicles

Bag house cleaning system uses Dust Collector Timer Controller to initiate optimum cleaning cycle

When transporting temperature-sensitive products such as meat, produce, beer and wine over long distances, it is necessary to verify that the storage compartment has not exceeded the critical preservation temperature at any time. Dwyer® BDL button data loggers offer a low cost way to measure and record storage temperatures throughout transport. By placing several "buttons" throughout the storage compartment and setting an appropriate measurement interval, transportation services can retrieve data at the completion of delivery to assure their customers of adequate preservation temperatures.

A Dwyer® DCT1000 dust collector timer controller with attachable DCP pressure sensing module monitors and controls the dust levels and corresponding pressure drop across the filter bags. The DCT1000/DCP control automatically activates the cleaning cycle when the DCT1000's pre-programmed set points have been exceeded. This on-demand control system alleviates excessive air compressor usage by preventing unnecessary cleaning which lowers energy and maintenance costs.

51 DWYER INSTRUMENTS, INC. | dwyer-inst.com

PROCESS CONTROL | TYPICAL APPLICATIONS

Detect broken filters in dust collectors

Monitoring belt conveyor for proper operation

The Dwyer® Series DPM particulate monitor and PMS particulate sensor combine to make a particulate monitoring system for the exhaust stream of dust collectors. The amount of particulate leaking out of the dust collector is measured using low maintenance induction technology and shown on a display for easy viewing. The DPM has programmable thresholds of leakage for switch output indication of dust collector problems such as broken or leaking filters. Proper use of the system will allow the user to catch breaking filters early. Advantages of the system are maintaining regulatory compliance, maximizing product recovery, optimizing filtration efficiency, preventing fines and plant shutdowns, and reducing the amount of pollutants released.

A Proximity® Series NSS speed switch is used to monitor the speed of a product belt conveyor indicating proper operation. Common applications include grain, feed, aggregate, mining, and textiles. Belt slippage or a slowdown in belt speed indicates problems that could lead to product waste or could generate sparks leading to a fire or explosion. The belt's speed is monitored via the rotational speed of the shaft at the end of the belt. The NSS is a non-contact magnetic actuated system allowing easy installation and long operational life. A magnetic disc is installed on the rotating shaft and the sensor is mounted across from it. The sensor picks up the rotation of the disc to detect the rotational speed of the belt. Inside the sensor is a programmable switch that can be set for any speed. In this application as the speed decreases and hits the set point the switch is activated for indication of a problem. Proper usage of an NSS can help with predictive maintenance and decrease down-time.

Providing remote indication of pressure, humidity or temperature

Monitor the status of your fan or pump

The Series DPML, DPMP, and DPMW digital LCD panel meters as well as the SPPM and SPPM2 HMI panel meters provide remote indication in the designated engineering units for pressure, humidity, temperature as well as customizable measurement units. The panel meters can take a voltage or current input signal from transmitters such as the Dwyer® TTE, Series 626 or Series RHP.

The Dwyer® Series SCS current switches monitor the input current into a fan or pump motor starter in order to monitor the status of the equipment. As the current passes through the core of the switches, it generates enough energy to power up the switch eliminating the need for extra power wires. The solid core models are typically used on new installations, while the split core models are able to mount on existing or new installations.

DWYER INSTRUMENTS, INC. | dwyer-inst.com 52

SELECTION GUIDE | VALVES

2-WAY
Automated Ball Valves

SERIES
Body Type Body Material Line Sizes End Connections

WE01
2-way 2-piece 316 SS 1/2 to 3 Female NPT

WE08
2-way 2-piece Brass 1/2 to 2 Female NPT

WE02
2-way 3-piece 316 SS 1/2 to 3 Female NPT

WE03
2-way 3-piece 316 SS 1/2 to 2 Tri-clamp

3-WAY
Automated Ball Valves

SERIES
Body Type Body Material Line Sizes End Connections

WE31
3-way 316 SS 1/2 to 2 Female NPT

WE35
3-way Brass 1/2 to 2 Female NPT

WE33
3-way 316 SS 1/2 to 2 Tri-clamp

WE34
3-way 316 SS 1/2 to 3 Flange

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 53 DWYER INSTRUMENTS, INC. | dwyer-inst.com

VALVES | SELECTION GUIDE

2-WAY
Automated Ball Valves

SERIES
Body Type Body Material Line Sizes End Connections

WE04
2-way 2-piece 316 SS 1/2 to 3 Flange

WE05
2-way 3-piece 316 SS 1/2 to 3 Socket weld

WE06
2-way 3-piece V-ball 316 SS 1/2 to 3 Female NPT

WE07
2-way 2-piece V-ball 316 SS 1/2 to 3 Flange

POSITIONERS

SERIES
Body Material Stroke Air Supply Enclosure Rating

165 & 265
Aluminum or 316 SS 0.5 to 6 or 0 to 90° 20 to 101 psig IP66

185 & 285
Aluminum or 316 SS 0.5 to 6 or 0 to 90° 35 to 116 psi NEMA 4X

195 & 295
Aluminum 0.19 to 1.38 or 0 to 90° 35 to 116 psi NEMA 4X

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 54

SELECTION GUIDE | VALVES

HAND LEVER
Ball Valves

SERIES
Body Type Body Material Line Sizes End Connections

DBV
2-way Brass 1/4 to 3 Female NPT

BV2M
2-way CF8M 1/4 to 3 Female NPT

DBVL
2-way Low lead brass 1/4 to 3 Female NPT

SWBV
2-way Brass 1/4 to 3 Sweat

POSITION INDICATORS/SWITCHES/TRANSMITTERS

SERIES
Type Rotation Travel Enclosure Material Enclosure Rating

QV
Thru-shaft 5 to 360° (switches only) Polycarbonate NEMA 4, 4X

Mark 1
Magnetic drive 0 to 340° Aluminum or 316 SS NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 7, 9, 12, & 13

Mark 3
Magnetic drive 1 to 25 revolutions Aluminum or 316 SS NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 7, 9, 12, & 13

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. 55 DWYER INSTRUMENTS, INC. | dwyer-inst.com

VALVES | SELECTION GUIDE

HAND LEVER
Ball Valves

SERIES
Body Type Body Material Line Sizes End Connections

UBV
Uni-flange Brass 1/2 to 1 Female NPT

MV
2-way Chrome-plated brass 1/8 to 1/2 Female x female NPT or Male x female NPT

SMV2
2-way SS 1/8 to 1/2 Female x female NPT or Male x female NPT

POSITION INDICATORS/SWITCHES/TRANSMITTERS

SERIES
Type Rotation Travel Enclosure Material Enclosure Rating

Mark 4
Thru-shaft 0 to 340° Aluminum or 316 SS NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 7, 9, 12, & 13

VPS
Dual Inductive N/A Polybutylene Terephthalate N/A

DT
Magnetic Point Sensor N/A SS Designed to NEMA 1, 3, 4, 4X, 6, 7, 9, 12 & 13

These Selection Guides are for quick comparison of similar products. Please refer to the catalog page number referenced for complete product information and specifications. DWYER INSTRUMENTS, INC. | dwyer-inst.com 56

TYPICAL APPLICATIONS | VALVES

Process temperature control using pneumatic Hi-FlowTM control valves

Water-side economizer system includes Series WE31 3-way ball valve for accurate control of flow

Pneumatic Hi-FlowTM control valves provide excellent control with high flow, wide rangeability and tight shutoff capabilities. The dispensing application shown uses a Lin-E-Aire® pneumatic actuator, operating off standard 3-15 psi control air signals, and a Hi-FlowTM linear control valve that apportions steam or water to a user process. The valve regulates cooling water or steam flow depending on the process requirement resident in the temperature controller program. This package can be provided with a Precisor® positioner and Proximity position transmitter which provides an excellent process control application problem solution.

To ensure efficient utilization of cold water in HVAC systems, WE31 3-way ball valves are called upon to modulate flow. This common "water-side economizer" allows water from the plate heat exchanger to be diverted directly to the cooling tower if the temperature is cool enough, instead of coming directly from the condenser on the chiller.

Quick response Hi-FlowTM valves control water flow in cooling process

Proximity® Mark Series valve position indicator is perfect for valve position indication on offshore oil rigs

Dependable W.E. AndersonTM Hi-FlowTM control valves with Lin-E-Aire® air-to-raise actuators combine to provide unsurpassed water flow management. This retort system employs the Hi-FlowTM valve because of its excellent control capabilities, which are necessary for this application. After the cooking process, the valve is opened slowly. Once the desired temperature has been reached, the supply is shut off and any additional cooling is done by use of the hand valve.

Proximity® Mark Series position indicator is utilized in valve automation packages in harsh environments. The Mark Series mounts onto the top of rotary valve actuators and connects to the actuator shaft or attaches to the shaft of a linear valve for indicating valve position. Standard with the Mark Series is visual position indication with "OPEN", "CLOSED", and degree position status. The Mark Series is available with continuous position retransmission with a 4-20 mA output and up to six adjustable position indication switches for remote indication of valve status. Remote status transmitter is used for indication of exact valve position and switches provide discrete indication of valve open and closed status in the control room. The Mark Series is perfect for this application because of the 316 SS enclosure that withstands the sea spray environment, and the magnetic drive mechanism that completely seals the switch cavity from the environment.

57 DWYER INSTRUMENTS, INC. | dwyer-inst.com

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INFORMATION ABOUT MERCURY-ADDED PRODUCTS
Dwyer Instruments, Inc. continues its development of non-mercury replacement alternatives for those products currently offered containing mercury. We will continue to work with all customers to supply mercury added products as needed for replacement of products currently in use and to guide customers towards non-mercury added products for new applications.
Dwyer Instruments, Inc. will comply with all local, state, federal, and international laws regarding the sale of mercury added products. These laws may affect our ability to sell, distribute, or transport products into restricted states and/or countries. Mercury added product sales may be limited or denied to certain customers depending on the location or intended use of the product.
Dwyer Instruments, Inc. encourages all customers to become familiar and comply with all mercury legislation. Sales of any and all mercury added products will be discontinued to any customer that knowingly or willfully disregards any legislation concerning mercury.
Dwyer Instruments, Inc. requests that all mercury containing products are properly disposed of at the end of their useful life. Many web sites are available to help educate consumers about proper disposal of mercury added products. Please visit www.newmoa.org for additional information related to mercury usage.

Manufacturing Excellence Since 1931
PROCESS AUTOMATION
PRODUCT APPLICATIONS & SELECTION GUIDES
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