LevelSCOUT Instructions Seametrics Level SCOUT
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LevelSCOUT Precision Environmental Sensors An ONICON Brand Level/Temperature Smart Sensor and Datalogger For Sales & Service Contact 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 USA rt if ie d Comp a Ce ISO ny PROUDLY MADE IN THE 9001:2008 1-800-833-7958 www.geotechenv.com LEVELSCOUT INSTR ©1997 - 2016 Seametrics. All rights reserved. Registered trademarks and trademarks belong to their respective owners. Seametrics • 253.872.0284 Page 2 seametrics.com TABLE OF CONTENTS LEVELSCOUT INSTR General Information What is the LevelSCOUT?......................................................................................................................4 Initial Inspection and Handling...........................................................................................................4 Do’s and Don’ts.........................................................................................................................................5 How Pressure/Level Sensors Work....................................................................................................5 General Specification..............................................................................................................................6 Wiring and Component Information................................................................................................7 Installation Power.............................................................................................................................................................8 Connecting the LevelSCOUT to a Computer.................................................................................8 Installing the Aqua4Plus 2.0 Software..............................................................................................8 Installing the Sensor................................................................................................................................9 Battery Life Calculator.............................................................................................................................9 Connecting via RS232 Serial Port.................................................................................................... 10 Connecting via USB/Serial Adapter................................................................................................ 10 Connecting to Sensors........................................................................................................................ 11 Settings and Calibration A Word About Units............................................................................................................................. 12 Sensor Settings....................................................................................................................................... 12 Program Settings................................................................................................................................... 13 Pressure Calibration.............................................................................................................................. 15 Operation Real-time Data........................................................................................................................................ 19 Data Logging........................................................................................................................................... 20 Reports....................................................................................................................................................... 24 Barometric Compensation ................................................................................................................ 27 Direct Read Modbus/SDI-12 Settings Units for Direct Read........................................................................................................... 30 Reading Via Modbus RTU................................................................................................................... 31 Maintenance Changing Batteries................................................................................................................................ 32 Miscellaneous.......................................................................................................................................... 32 Troubleshooting Erratic Readings...................................................................................................................................... 33 Zero Readings When Pressurized.................................................................................................... 33 Grounding Issues................................................................................................................................... 33 Warranty............................................................................................................. 35 Seametrics • 253.872.0284 Page 3 seametrics.com GENERAL INFORMATION LEVELSCOUT INSTR What is the LevelSCOUT? The Seametrics LevelSCOUT Smart Sensor is an integrated datalogger and level/temperature sensor and is ideal for site assessments, tidal studies, environmental monitoring, surface water discharge measurement, and aquifer level monitoring, as well as aquifer storage and recovery. This sensor networks with all of the Seametrics Smart Sensor family. This industry standard digital RS485 interface device records up to 50,000 records of level, temperature, and time data, operates with low power, and features easy-to-use software with powerful features. Constructed with 316 stainless steel, acetal, and Viton®, this sensor provides high-accuracy readings in rugged and corrosive field conditions. The LevelSCOUT is an absolute sensor, requiring no vent tubes, desiccant, or bellows. It can be paired with a BaroSCOUT barometric sensor and used with the Aqua4Plus 2.0 Barometric Compensation Utility to adjust the LevelSCOUT readings for current atmospheric pressure. A 1/2 AA 3.6v lithium battery powers the LevelSCOUT. The unit is programmed using Seametrics’ easy-to-use Aqua4Plus 2.0 control software. Once programmed the unit will measure and collect data at the time interval programmed. Replace your analog sensor/datalogger with the Seametrics LevelSCOUT as a standalone unit or network with other Seametrics Smart Sensors. While most will use the LevelSCOUT with Seametrics Aqua4Plus 2.0 software, it is by no means limited to that software. You can use your own Modbus® RTU software or logging equipment to read measurements via RS485, tying into your existing systems and data bases. Initial Inspection and Handling Upon receipt of your smart sensor, inspect the shipping package for damage. If any damage is apparent, note the signs of damage on the appropriate shipping form. After opening the carton, look for concealed damage, such as a cut cable. If concealed damage is found, immediately file a claim with the carrier. Check the etched label on the sensor to be sure that the proper range and type were provided. Also check the label attached to the cable at the connector end for the proper cable length. Seametrics • 253.872.0284 Page 4 seametrics.com GENERAL INFORMATION LEVELSCOUT INSTR Do’s and Don’ts Do handle the device with care. Do store the device in a dry, inside area when not in use. Do install the device so that the cable connector is kept dry. Don’t support the device with the connector. Use a strain relief device to take the tension off the connectors. Don’t allow the device to free-fall down a well as impact damage can occur. Don’t bang or drop the device on hard objects. How Pressure/Level Sensors Work Liquids and gasses do not retain a fixed shape. Both have the ability to flow and are often referred to as fluids. One fundamental law for a fluid is that the fluid exerts an equal pressure in all directions at a given level. Further, this pressure increases with an increasing depth of “submergence”. If the density of a fluid remains constant (noncompressible...a generally good assumption for water at “normal” pressures and temperatures), this pressure increases linearly with the depth of “submergence”. We are all “submerged” in the atmosphere. As we increase our elevation, the pressure exerted on our bodies decreases as there is less of this fluid above us. It should be noted that atmospheric pressure at a given level does vary with changes in the weather. One standard atmosphere (pressure at sea level at 20º C) is defined to be 14.7 PSI (pounds per square inch). There are several methods to reference a pressure measurement. Absolute pressure is measured with respect to an ideal vacuum (no pressure). Gauge pressure is the most common way we express pressure in every day life and is the pressure exerted over and above atmospheric pressure. With this in mind, gauge pressure (Pg) can be expressed as the difference between the absolute pressure (Pa) and atmospheric pressure (Patm): Pg = Pa - Patm. The LevelSCOUT is an absolute sensor and will require an outside barometric reference to obtain “gauge” type readings. Seametrics • 253.872.0284 Page 5 seametrics.com GENERAL INFORMATION LEVELSCOUT INSTR General Specification The Seametrics LevelSCOUT is a microprocessor based digital intelligent sensor designed to measure and record level, temperature, and time, utilizing state-of-the-art low power, battery operated circuitry. Level is measured with an extremely rugged and stable piezo-electric media-isolated pressure element combined with an analog-to-digital converter. This provides extremely accurate and stable pressure input into the microprocessor on the circuit board. Temperature is measured with an epoxy bead thermistor. The data is stored in nonvolatile memory. A serial communication link (RS485) provides communication to the host computer. Length (cabled version) 6.6” (16.7 cm) Length (cableless version) 5.1” (12.9 cm) Body Material 316 stainless steel or titanium Communication RS485 Modbus® RTU Diameter 0.875” (2.22 cm) Wetted Materials 316 stainless steel or titanium, acetal, fluoropolymer Direct Modbus Read Output 32-bit IEEE floating point Internal Math 32-bit floating point Operating Temp. Range -20° C to 60° C Storage Temp. Range -40° C to 80° C Logging Memory 50,000 records Software Complimentary Aqua4Plus 2.0 Logging Rate 1x per second File Formats .csv / .a4d Power Internal Battery Expected Battery Life One 1/2 AA 3.6 lithium battery 4.5 years (depending on use) Temperature Element Type Thermistor Accuracy ± 0.1° C (from -20° C to 60° C) Resolution 0.01° C Units Seametrics • 253.872.0284 Celsius, Fahrenheit, Kelvin Page 6 seametrics.com GENERAL INFORMATION LEVELSCOUT INSTR Level Transducer Type Silicon strain gauge Ranges Absolute1 PSI FtH2O (max. depth) mH2O (max. depth) 30, 50, 100, 300 35, 81, 196, 658 10, 24, 59, 200 Transducer Material 316 stainless steel Units PSI, FtH2O, inH2O, cmH2O, mmH2O, mH2O, inHg, cmHg, mmHg, Bars, mBars, kPa Accuracy ± 0.05% FS (@ 20° C) ± 0.10% FS (0° C to 40° C) Resolution 0.0034% FS (typical) Over Range Protection 3x FS (for >300 psi2, 1.75 FS) Maximum Operating Pressure 1.1 x FS Burst Pressure 600 psi (approx. 1350 ft or 410 m) ¹Depth range has 15 PSI subtracted to give actual depth allowed. ²Approx. 658 feet or 200 meters Wiring and Component Information Seametrics • 253.872.0284 Page 7 seametrics.com INSTALLATION LEVELSCOUT INSTR Power The LevelSCOUT comes with a 1/2 AA 3.6v lithium battery. Connecting the LevelSCOUT to a Computer In its cabled configuration, the sensor cable is terminated with a weather-resistant connector. In its cableless configuration, the sensor is terminated with a weatherresistant connector inside a screw-cap. Connect the weather-resistant connector to your computer’s USB port as shown below. USB to RS485 Adapter Screwcap PC or Laptop Computer Sensor USB Port Cableless Configuration Sensor Connect the sensor to your PC using Seametrics’ USB to RS485 adapter. Installing the Aqua4Plus 2.0 Software The LevelSCOUT comes with the Aqua4Plus 2.0 host software that is installed on your PC or laptop. Use this software to program the datalogger, to retrieve data from the logger, to view collected data, and to export data to external files for use with spreadsheets or databases. Refer to the Aqua4Plus 2.0 software manual for details on installing and using the software. LevelSCOUT can also be used with the full Aqua4Plus 2.0 software. Using the LevelSCOUT Without Aqua4Plus 2.0 Most users will use the LevelSCOUT with Seametrics Aqua4Plus 2.0 software. However, the LevelSCOUT is quite versatile, communicating via Modbus® RTU, allowing you to use your own software or logging equipment. Seametrics • 253.872.0284 Page 8 seametrics.com INSTALLATION LEVELSCOUT INSTR Installing the Sensor The LevelSCOUT measures level. The most common application is measuring liquid levels in wells and tanks. In order to do this, the sensor must be installed below the water level at a fixed depth. The installation depth depends on the range of the sensor. The sensor should not be installed below its maximum depth. If the sensor is installed below its maximum depth, damage may result to the sensor and the output reading will not be correct. Note: If you are using an absolute sensor and you want to enter a depth-to-water reference after data is collected, then see Appendix E before proceeding. • Lower the sensor to the desired depth. • Fasten the cable to the well head using tie wraps or a weather proof strain-relief system. • Take a measurement to insure the sensor is not installed below its maximum range. Be sure the supplied cap is securely placed on the weather-resistant connector at the top of the cable. Do not install such that the connector might become submerged with changing weather conditions. The connector can withstand incidental splashing but is not designed to be submerged. The sensor can be installed in any position; however, when it leaves the factory it is tested in the vertical position. Strapping the sensor body with tie wraps or tape will not hurt it. If the sensor is being installed in a fluid environment other than water, be sure to check the compatibility of the fluid with the wetted parts of the sensor. Battery Life Calculator The LevelSCOUT has a battery life calculator that is set at the factory when batteries are first put in the sensor. If you need to replace the batteries, see the Maintenance section for replacement information and for information on resetting the battery life calculator. If the battery life calculator is not reset, the remaining life information will be incorrect. Seametrics • 253.872.0284 Page 9 seametrics.com INSTALLATION LEVELSCOUT INSTR Seametrics recommends connecting the sensor to your computer using the Seametrics USB cable. However, when using Aqua4Plus 2.0, the sensor can also be connected using an RS232 serial port or a USB-to-Serial cable, as described below. Connecting via RS232 Serial Port In its cabled configuration, the sensor cable is terminated with a weather-resistant connector. In its cableless configuration, the sensor is terminated with a weatherresistant connector inside a screw-cap. Connect the weather-resistant connector to your computer’s serial port as shown below. Interface Cable Screwcap RS485/RS232 Adapter Sensor Cableless Configuration Serial Port PC or Laptop Computer Sensor Connect the sensor to your computer using an RS485/RS232 adapter and an interface cable. Connecting with a USB/Serial Adapter USB-to-Serial cables are readily available from many electronics and computer stores, as well as numerous sites on the Internet. Seametrics has tested and recommends the Keyspan USA-19HS. It is available from Seametrics as well as from many sites on the Internet. Install as follows: • Plug into USB port. • Install the drivers provided with the particular unit. • Once drivers are installed, connect to sensor. Seametrics • 253.872.0284 Page 10 seametrics.com INSTALLATION LEVELSCOUT INSTR Connecting to Sensors Aqua4Plus 2.0 is designed to automatically detect your communication cable and scan for sensors. It is recommended you connect your USB/RS485 cable to your PC and have the sensor connected before opening Aqua4Plus 2.0. If your cable and sensor were not connected before opening Aqua4Plus 2.0 simply connect and click Rescan. While scanning is active you’ll see a green dot flash in the upper right corner of the program. Scanning is complete when this dot stops flashing. If your sensor still won’t connect you can expand the Modbus address range under program settings here: Simply drag the Address Range slider higher up to increase the maximum Modbus address scanned. If you’ve scanned all the way up through address 255 and still have no connection click Troubleshooting for further troubleshooting or contact Seametrics Tech Support for assistance. Click at any time to refresh sensor information. Seametrics • 253.872.0284 Page 11 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR A Word About Units Readings from the PT2X Smart Sensor can be displayed in various units, such as PSI, Ft. H2O, or mm H2O for pressure, or degrees Celsius or degrees Fahrenheit for temperature. Select the units you want from Sensor settings. Sensor Settings Once connected you’ll see the Sensor screen appear and display the connected sensor(s) details. Mousing over icons will provide tool-tips, mouse over to view sensor firmware and serial number details. To change general sensor settings click change the following: Click in the sensor screen. This allows you to to rename the sensor To change Modbus address and/or Baud Rate simply select the desired address and/or Baud Rate from the drop down menus. Sensor will automatically reconnect at new address and/or Baud Rate To change the Direct Read output units (for direct Modbus or SDI12 integration) simply select the desired output units from the drop down menus. To change Aqua4Plus 2.0 display units scaling see Program Settings. Seametrics • 253.872.0284 Page 12 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Sensor Clock can be synced with your PC time or set manually if desired. To set manually enter your desired date/time and click Set Time. When batteries are changed out make sure to reset the battery information here, simply check the I have just put in new batteries box and select the battery type that was installed from the drop down menu. Program Settings To view/change Aqua4Plus 2.0 settings click in the blue side-bar menu. Under the General Settings tab you can change the default data folder location. This is where your Reports are saved to on your PC. The Zoom Factor slider can be used to adjust the font size within Aqua4Plus 2.0. Uncheck the Allow app to collect anonymous usage statistics box if you would like to opt out. This information is used to track Aqua4Plus 2.0 reliability across different system configurations. Under the Display Units tab you can select your desired display units for the supported channels. These may be changed at any time and associated Real-Time readings and Reports will rescale to the currently selected display unit. To change Direct Read units scaling see Sensor Settings. Seametrics • 253.872.0284 Page 13 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Under the Communications tab you can change your Modbus communication settings. Typically you will only need to change the address range to connect to sensors outside of Modbus address 1-10. In certain cases we may need to change the Retry and Timeout settings to overcome communication issues on very long, or corroded cabling. See Troubleshooting section or contact Seametrics Tech Support for details. To restore factory default settings click Seametrics • 253.872.0284 Page 14 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Pressure Calibration To perform a calibration setup on the pressure channel first connect to the sensor and ensure all data has been uploaded and erased from the sensor. Next select the calibration button. Next select the calibration setup you’d like to perform: Confirm desired measurement units and click Continue. Submergence: One Point/Zero Point Calibration: To zero pressure output to atmospheric pressure position the sensor in air in its desired installation position (typically vertical, if sensor will be installed horizontally position as such during 0 point calibration). Select 1 point Calibration under Calibration Type. For PSIG sensors use 0 as the reference value and click Measure. For PSIA sensors enter current barometric pressure from a known accurate barometer set to matching units. Enter your reference value in the Ref. Point box and click Measure. Seametrics • 253.872.0284 Page 15 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Aqua4Plus 2.0 will take 10 readings and display the average. Watch for stability while the software is measuring to ensure an accurate calibration. Click Ok to accept the reading and Aqua4Plus 2.0 will calculate a new pressure offset. Click Apply to confirm the new offset value and Aqua4Plus 2.0 will provide a real time reading to verify calibration was successful: 2 Point submergence calibration ONLY RECOMMENDED IF YOU HAVE AN ACCURATE PRESSURE REFERENCE. Our Smart Sensors rarely change slope during normal use, however if you have an accurate pressure source it is possible to perform a 2 point calibration on the pressure channel. Select 2 point Calibration under Calibration Type Perform first point calibration as listed above and click Next Seametrics • 253.872.0284 Page 16 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Enter known pressure value in matching units in the Ref. Point box for second point measurement Aqua4Plus 2.0 will take 10 measurements and display the average. Watch for stability while the software is measuring to ensure an accurate calibration. Click Ok and Aqua4Plus 2.0 will calculate the new slope and offset values. Click Apply to confirm the new slope and offset values and the software will provide a real time reading to verify calibration was successful. Groundwater Elevation Position the sensor in its desired location and ensure all data has been uploaded and erased from the sensor before proceeding with calibration. Once positioned connect to sensor and select the calibration button, followed by selecting the Groundwater Elevation option. Double check measurement units selection before proceeding. Enter your current Groundwater Elevation reading in the Ref. Point box, making sure to match measurement units. Click Measure and Aqua4Plus 2.0 will take 10 readings and display the average. Watch for stability while the software is measuring to ensure an accurate calibration. Click Accept and Aqua4Plus 2.0 will calculate a new offset, click Apply to accept the new offset and Aqua4Plus 2.0 will provide a real time reading to verify calibration was successful. Staff Gauge Position the sensor in its desired location and ensure all data has been uploaded and erased from the sensor before proceeding with calibration. Once positioned connect to sensor and select the calibration button, followed by selecting the Staff Gauge option. Double check measurement units selection before proceeding. Enter your current Staff Gauge reading in the Ref. Point box, making sure to match measurement units. Seametrics • 253.872.0284 Page 17 seametrics.com SETTINGS AND CALIBRATION LEVELSCOUT INSTR Click Measure and Aqua4Plus 2.0 will take 10 readings and display the average. Watch for stability while the software is measuring to ensure an accurate calibration. Click Accept and it will calculate a new offset, click Apply to accept the new offset and Aqua4Plus 2.0 will provide a real time reading to verify calibration was successful. Removing calibration setup values To return to factory default simply enter an offset of 0 and slope of 1 in the Offset and Slope boxes: Click Apply to confirm settings and Aqua4Plus 2.0 will provide a real time reading to confirm. Adjusting for specific gravity You man enter the specific gravity of your fluid in the Slope field to adjust for specific gravity when needed. Click Apply to confirm settings and Aqua4Plus 2.0 will provide a real time reading to confirm. Seametrics • 253.872.0284 Page 18 seametrics.com OPERATION LEVELSCOUT INSTR Real-time Data Connect to sensor and select the Real-time data tab To sytart real-time readings click Start, readings default to table view. To switch to Realtime graphing view click the graph icon Real-time readings default to a 1 second interval for 1 minute, to adjust enter your desired settings here: Note: Currently this data is not saved and is for viewing current conditions only. To save the data to sensor memory see Data Logging section. You can run Real-time Data while logging is active. Seametrics • 253.872.0284 Page 19 seametrics.com OPERATION LEVELSCOUT INSTR Data Logging Select Set Up Logging from the sensor screen. If there are no files currently on the sensor you’ll see the Set Up Logging button active under the Data Files tab as well as in the upper menu. Once files have been started/logged on the sensor they will be displayed under the Data Files tab. Set Up Logging Window Here you will name your data file and set up the recording interval and duration of each logging phase. Select your desired recording interval and duration for each phase, Aqua4Plus 2.0 will display the available memory at the bottom of the window. Seametrics • 253.872.0284 Page 20 seametrics.com OPERATION LEVELSCOUT INSTR Click to switch between interval and continuous data recording (PT2X & CT2X only) Select your continuous rate from the drop down box (on the right). Duration can be set by either number of records or by setting a duration time, as shown on the right. When set by number of records the time of the recording phase will be displayed detailing how long that phase will run. When set by time, the total number of records for that phase will be displayed. If you need to check settings or perform a calibration click logging setup to switch to the Settings and Calibration screen. before proceeding with You may sync the sensor clock with the PC clock when starting logging by clicking the slider shown on the right. Check the Delayed Start box and enter the desired date/time you would like logging to start. This is useful for syncing data when setting up multiple sensors on a site. Data will start logging at the set date/time rather than immediately when Start is pressed. Data file name defaults to Test File # and may be re-named here, like on the right. Seametrics • 253.872.0284 Page 21 seametrics.com OPERATION LEVELSCOUT INSTR The 3 previous Logging Schedules that were programmed to a sensor will be listed under the Select Template drop down menu. There you will also find pre-programmed logging schedules such as 24 hour pump test, along with any custom logging schedules saved by the user. To save a logging schedule as a template enter desired settings and click add your custom schedule to the Select Template menu. This will Once all the desired settings are made simply click Start to begin logging. This will return you to the Sensor screen and your status will change to Active with the data file displayed under the Data Files tab. Mouse over an active file to pause, terminate, download, or view logging setup details. Seametrics • 253.872.0284 Page 22 seametrics.com OPERATION LEVELSCOUT INSTR Data files already downloaded will show in the Reports column, clicking here will bring you to the reports screen to view the data. See Reports section for details. You may only have 1 active data file recording on each sensor, however you can store multiple files in memory if desired. Starting a new file will automatically terminate the active logging and begin the new logging schedule. Real-time data is available during active logging. To delete files from memory make sure they have all been downloaded to Reports. Files are removed from memory all at once rather than individually. Once confirmed files are permanently deleted from the sensor memory. Seametrics • 253.872.0284 Page 23 seametrics.com OPERATION LEVELSCOUT INSTR Reports Data downloaded from your sensor is stored in the Reports section of Aqua4Plus 2.0 for viewing and editing. The files will be saved to default data folder on your PC as well. See Program Settings for default data folder location. In the main view you’ll see a list of reports sorted by date, size, or file name as selected here: You can also search reports by keyword using the search box Click on a report to bring up the report details. Reports are displayed in graphing view by default. You can zoom to specific sections by selecting a section with you mouse or by adjusting the slider below the graph. Graph saving and export options are available here Seametrics • 253.872.0284 Page 24 seametrics.com OPERATION LEVELSCOUT INSTR Click to switch to full screen graphing view Click to view data as a table Click to view data statistics The Information tab is a new feature allowing users to add metadata to their reports such as site location, field notes, or comments.The Schedule tab will display the logging setup details for the report Seametrics • 253.872.0284 Page 25 seametrics.com OPERATION LEVELSCOUT INSTR Click Export to export the report as a .csv file or .a4d file for distribution or use in 3rd party software. Click Delete to delete the report from Aqua4Plus 2.0 You can also import .a4d files from compatible sensors into Aqua4Plus 2.0 by clicking at the top of the Reports screen. Seametrics • 253.872.0284 Page 26 seametrics.com OPERATION LEVELSCOUT INSTR Barometric Compensation For PSIA sensors we’ve built a new barometric compensation utility into the Reports section. Click on a report to compensate the data for barometric pressure. Corresponding barometric files are filtered by date/time and displayed to the left. Select the barometric file you would like to use to compensate the report, select either the Submergence or Depth To Water tab, then click Continue. Seametrics • 253.872.0284 Page 27 seametrics.com OPERATION LEVELSCOUT INSTR If compensating for Depth to Water enter your depth to water reference measurement and the date/time the measurement was taken (typically taken with a water level indicator before data is uploaded from the sensor) before clicking Continue. Aqua4Plus 2.0 will perform the barometric compensation and create a new compensated report. Original reports are retained as uploaded. Seametrics • 253.872.0284 Page 28 seametrics.com OPERATION LEVELSCOUT INSTR Compensated report can then be viewed and exported as needed. Seametrics • 253.872.0284 Page 29 seametrics.com DIRECT READ MODBUS/SDI-12 LEVELSCOUT INSTR While the LevelSCOUT comes with Seametrics’s easy to use Aqua4Plus 2.0 software, you can also use standard Modbus® RTU equipment to easily take readings, so as to tie into your existing equipment or networks. Setting Units for Direct Read By default, the LevelSCOUT uses the following units: Temperature Level Degrees Celsius PSI However, you can select from a variety of units for direct read measurements. If you want to change to different units, for example, degrees Fahrenheit for temperature or feet of water for level, set these units using Aqua4Plus 2.0 (see sensor settings). Once set, these units are saved on the sensor and direct readings will return values using these units. (Note: These settings do not affect the units used on the Aqua4Plus 2.0 display. Refer to the software manual for details.) Seametrics • 253.872.0284 Page 30 seametrics.com DIRECT READ MODBUS/SDI-12 LEVELSCOUT INSTR Reading Via Modbus® RTU Taking Measurements Read measurements using Modbus function 03 – Read Holding Registers. Readings are located in two registers each, starting at address 62592. (LevelSCOUT register addressing is zero based, i.e., starts at zero. If your equipment uses one based addressing, you will need to add one to the register addresses.) Register addresses for LevelSCOUT Temperature Pressure Zero Based 62592 62594 One Based 62593 62595 Measurement Timing When you request a reading via Modbus, the sensor wakes up, returns the current values in the registers, and then starts taking new readings and updating the registers. After approximately four seconds, if no more readings have been requested, the sensor goes back to sleep. Because of this, the first reading you get will be old. If you are taking readings at intervals of less than four seconds, simply ignore the first reading — all remaining readings will be current. On the other hand, if you are taking readings at intervals of greater than four seconds, take a reading, ignore it, wait one second, take another reading. Record this second reading. Data Format The data is returned as 32-bit IEEE floating-point values, highword first, also referred to as big-endian or float inverse. For further information and detailed Modbus examples, see Seametrics application note, availabile on our website at www.seametric.com Seametrics • 253.872.0284 Page 31 seametrics.com MAINTENANCE LEVELSCOUT INSTR Changing Batteries The LevelSCOUT is powered by a single 1/2 AA 3.6 lithium battery. In most situations the battery will last for years. If you need to replace the battery, contact Seametrics for information on getting it replaced. You cannot simply replace the battery itself but must replace the entire compartment. IMPORTANT NOTE! When changing batteries, it is important to reset the Battery Life Calculator. If the battery life calculator is not reset, the remaining life information will be incorrect. Access the Battery Life Calculator from the Configure Menu - Battery Information and Reset. If you have put in new batteries, checkmark the box “I have just put in fresh batteries.” Click Save and Close. Miscellaneous Sensor: There are no user-serviceable parts, other than the batteries. If problems develop with sensor stability or accuracy, contact Seametrics. If the sensor has been exposed to hazardous materials, do not return it without notification and authorization. Cable: Cable can be damaged by abrasion, sharp objects, twisting, crimping, crushing, or pulling. Take care during installation and use to avoid cable damage. If a section of cable is damaged, it is recommended that you send your sensor back to replace the cable harness assembly. End Connections: The connectors used by Seametrics are not submersible, but are designed to be splash-resistant. Seametrics • 253.872.0284 Page 32 seametrics.com TROUBLESHOOTING LEVELSCOUT INSTR Erratic Readings Erratic readings can be caused by a poor connection, damaged cable, moisture in the unit, or a damaged transmitter. In most cases, erratic readings are due to moisture getting into the system. The first thing to check is the connection. Look for moisture between contacts or a loose or broken wire. Next, check the cable for cracking or fraying. If the connections and cable appear OK, but the readings are still erratic, the transmitter may be damaged. Contact Seametrics for evaluation and repair. Erratic and erroneous readings can also occur due to improper grounding. See Grounding Issues, below. Zero Readings When Pressurized Continuous zero readings are usually caused by an open circuit which may indicate a broken cable, a bad connection, or possibly a damaged transmitter. Check the connector to see if a wire has become loose or if the cable has been cut. If damage is not readily apparent, contact Seametrics for evaluation and repair. Grounding Issues It is commonly known that when using electronic equipment, both personnel and equipment need to be protected from high power spikes that may be caused by lightning, power line surges, or faulty equipment. Without a proper grounding system, a power spike will find the path of least resistance to earth ground – whether that path is through sensitive electronic equipment or the person operating the equipment. In order to ensure safety and prevent equipment damage, a grounding system must be used to provide a low resistance path to ground. When using several pieces of interconnected equipment, each of which may have its own ground, problems with noise, signal interference, and erroneous readings may be noted. This is caused by a condition known as a Ground Loop. Because of natural resistance in the earth between the grounding points, current can flow between the points, creating an unexpected voltage difference and resulting erroneous readings. The single most important step in minimizing a ground loop is to tie all equipment (sensors, dataloggers, external power sources, and any other associated equipment) to a single common grounding point. Seametrics recommends connecting the shield to ground at the connector end. Seametrics • 253.872.0284 Page 33 seametrics.com LEVELSCOUT INSTR Seametrics • 253.872.0284 Page 34 seametrics.com SEAMETRICS LIMITED WARRANTY LEVELSCOUT INSTR The limited warranty set forth below is given by Seametrics, with respect to Seametrics brand products purchased in the United States of America. Seametrics warrants that products manufactured by Seametrics, when delivered to you in new condition in their original containers and properly installed, shall be free from defects in material and workmanship. Seametrics products are warranted against defects for a period of two (2) years from date of installation, with proof of install date. If no proof of install date can be provided, warranty period will be two (2) years from date of shipment from Seametrics, as defined on Seametrics’ invoice. Seametrics’ obligation under this warranty shall be limited to replacing or repairing the part or parts, or, at Seametrics’ option, the products, which prove defective in material or workmanship. The following are the terms of Seametrics’ limited warranty: a. Buyer must give Seametrics prompt notice of any defect or failure and satisfactory proof thereof. b. Any defective part or parts must be returned to Seametrics’ factory or to an authorized service center for inspection. d. Defective products, or parts thereof, which are returned to Seametrics and proved to be defective upon inspection, will be repaired to factory specifications. c. e. f. g. Buyer will prepay all freight charges to return any products to Seametrics’ factory, or another repair facility. as designated by Seametrics. Seametrics will deliver repaired products or replacements for defective products to the buyer (ground freight prepaid) to the destination provided in the original order. Products returned to Seametrics for which Seametrics provides replacement under this warranty shall become the property of Seametrics. This limited warranty covers all defects encountered in normal use of Seametrics products, and does not apply to the following cases: i. Loss of or damage to Seametrics product due to abuse, mishandling, or improper packaging by buyer iii. Products not used for their intended purpose ii. iv. v. vi. vii. viii. ix. h. i. j. Failure to follow operating, maintenance, or environmental instructions prescribed in Seametrics’ instruction manual Alterations to the product, purposeful or accidental Electrical current fluctuations Corrosion due to aggressive materials not approved for your specific product Mishandling, or misapplication of Seametrics products Products or parts that are typically consumed during normal operation Use of parts or supplies (other than those sold by Seametrics) which cause damage to the products, or cause abnormally frequent service calls or service problems A new warranty period shall not be established for repaired or replaced material, products, or supplied. Such items shall remain under warranty only for the remainder of the warranty period on the original materials, products, or supplies. In the event that equipment is altered or repaired by the buyer without prior written approval by Seametrics, all warranties are void. Damage caused by equipment or accessories not manufactured by Seametrics may void the product’s warranty. SOFTWARE: The Seller grants the user a non-exclusive license to use Seametrics’ software, according to the following limitations and conditions: i. The user may install the software on one or more desktop or laptop computers. iii. No copies may be made or distributed except as described above. ii. iv. All title and intellectual rights to the software are owned by Seametrics. The user may not modify or reverse-engineer the software. THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, WHETHER ORAL, WRITTEN, EXPRESSED, IMPLIED OR STATUTORY. NO IMPLIED WARRANTY, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, APPLIED TO THE PRODUCTS AFTER THE APPLICABLE PERIOD OF THE EXPRESS LIMITED WARRANTY STATED ABOVE, AND NO OTHER EXPRESS WARRANTY OR GUARANTY, EXCEPT AS MENTIONED ABOVE, GIVEN BY ANY PERSON OR ENTITY WITH RESPECT TO THE PRODUCTS, SHALL BIND SEAMETRICS. SEAMETRICS SHALL NOT BE LIABLE FOR LOSS OF REVENUES, OR PROFITS, OR INCONVENIENCES, EXPENSE FOR SUBSTITUTE EQUIPMENT OR SERVICE, STORAGE CHARGES, LOSS OF DATA, OR ANY OTHER SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGE CAUSED BY THE USE OR MISUSE OF, OR INABILITY TO USE THE PRODUCTS, REGARDLESS OF THE LEGAL THEORY ON WHICH THE CLAIM IS BASED, AND EVEN IF SEAMETRICS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL RECOVERY OF ANY KIND AGAINST SEAMETRICS BE GREATER IN AMOUNT THAN THE PURCHASE PRICE OF THE PRODUCT SOLD BY SEAMETRICS AND CAUSING THE ALLEGED DAMAGE. WITHOUT LIMITING THE FOREGOING, YOU ASSUME ALL RISK OF LIABILITY FOR LOSS, DAMAGE, OR INJURY TO YOU AND YOUR PROPERTY AND TO OTHERS AND THEIR PROPERTY ARISING OUT OF USE OR MISUSE OF, OR INABILITY TO USE THE PRODUCTS NOT CAUSED DIRECTLY BY THE NEGLIGENCE OF SEAMETRICS. SOME STATES DO NOT ALLOW LIMITATIONS ON THE DURATION OF AN IMPLIED WARRANTY, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. SIMILARLY, SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF CONSEQUENTIAL DAMAGE, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS; HOWEVER, YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY FROM STATE TO STATE. Seametrics • 253.872.0284 Page 35 seametrics.com Seametrics • 19026 72nd Avenue South • Kent, Washington 98032 • USA (P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • seametrics.com LT-14323r5 20180227 2/27/18
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