Molbox1+ Flow Terminal 5141 5142 5144 Molbox RFM Gas Calibrator Kits Technical Data Sheet Brochure 1

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User Manual: 5141-5142-5144-molbox-RFM-Gas-Flow-Calibrator-Kits-Technical-Data-Sheet-Brochure-1

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Technical Data

molbox1+™ Flow Terminal

± 0.125 % of reading—lowest uncertainty

for gas flow calibration

The molbox1+ flow terminal from Fluke Calibration

represents a significant update to the molbloc/molbox

gas flow calibration system. molbox1+ combined

with molbloc flow elements enables you to achieve

the lowest uncertainty available for gas flow meter

and controller calibrations. A special configuration,

molbox1+S, allows you to use molbloc-S sonic nozzle

flow elements at higher pressures than were previously

possible, greatly extending their usable flow range.

A molbloc/molbox1+ gas flow calibration system is the

ideal solution for calibrating flow meters, thermal mass

flow controllers (MFCs), rotameters, turbine meters,

bubble meters, and other flow measurement devices.

With real-time measurements, no moving parts and

supported by traceable calibration in several different

gases and operating pressures, molbloc/molbox can

handle virtually any calibration application without

compromise. molbloc/molbox systems are widely

used in many industries, including pharmaceuticals,

semiconductors, aerospace, environmental monitoring,

energy production, reference gas blending, and

research and standards laboratories.

molbox1+

features

at a glance

• ± 0.125 % of reading

uncertainty on mass

flow measurements

with molbloc-L and

molbloc-S elements

with premium

calibrations

• molbox1+S

configuration gives

extra rangeability

with molbloc-S

elements without

requiring vacuum

pumps

• Now use any

molbloc element for

both high and low

pressure applications

in the same gas

• Even more robust

internal pneumatic

design

• Full suite of software

automation products

and hardware

accessories to

create a complete

gas flow calibration

system—including

new COMPASS®

for Flow calibration

assistance software

2 Fluke Calibration molbox1+ Flow Terminal

Unparalleled uncertainty specifications

molbox1+ innovations enable the molbloc/

molbox1+ system to achieve the lowest gas flow

measurement uncertainties in the industry.

The lower uncertainty is made possible by

several key improvements, including:

• Use of Fluke Calibration’s exclusive quartz

reference pressure transducer (Q-RPT) tech-

nology to precisely measure both absolute

and differential pressure. molbox1+ Q-RPTs

are specially characterized sensors benefit-

ting from the same technology used in Fluke

Calibration’s pressure transfer standards.

• “Premium” molbloc calibrations linearize

molbloc flow output to better capitalize on

existing precision and repeatability.

• Expanded molbloc modelization enables

improved performance of molbloc-L laminar

flow elements across their range of operating

pressures.

• Reduced uncertainty on gas properties

utilizing data from NIST Reference Fluid Ther-

modynamic and Transport Properties Database

(REFPROP).

• Continued improvements in Fluke Calibra-

tion’s molbloc calibration chain, based on

fundamental mass- and time-based mass flow

measurements using Fluke Calibration’s own

dynamic Gravimetric Flow Standard.

Two levels of molbloc flow element calibration

are now available to let you balance uncertainty

and cost:

• Premium: ± 0.125 % of reading flow mea-

surement uncertainty (with molbox1+)

• Standard: ± 0.2 % of reading flow measure-

ment uncertainty (with molbox1 or molbox1+)

New molblocs are eligible for either calibra-

tion type. Existing molblocs are compatible

with molbox1+ at ± 0.2 % of reading uncer-

tainty with no changes required. See below for

details on upgrade service to existing molblocs

to allow premium calibration and measurement

specifications.

The molbloc/molbox system has stood the

test of time since the early 1990’s, used in many

demanding calibration laboratories, intercompar-

isons and government organizations worldwide.

Fluke Calibration’s uncertainty specifications

are conservative and backed by a thorough

uncertainty analysis and metrology support.

Fluke Calibration’s innovation and design is

continually aimed at making sure our products

deliver specifications that can be realized by the

user, not under best case conditions but in your

real-world application.

molbox1+S expands rangeability—with-

out vacuum pumps

molbox1+S is a special configuration of molbox

1+ that enables you to cover a wide range (10:1

range turndown) with molbloc-S sonic nozzle

flow elements, without requiring costly vacuum

pumps. molbox1+S is available with upstream

Q-RPT pressure range up to 2 MPa (300 psia)

to allow molbloc-S elements to be conveniently

used over a wide flow range upstream of flow

meters being tested at atmospheric pressure,

a common application. This extra rangeability

makes it simple to configure a calibration system

using fewer molbloc elements and minimal

accessories. It also greatly extends the range of

your existing molbloc-S elements when a high

pressure molbloc calibration is added.

molbox1+S is designed for use with molbloc-S

elements and therefore is configured for abso-

lute pressure measurement only, reducing its

cost. It also reduces flow system complexity and

overall cost, as well as ongoing recalibration

costs.

Use the same molbloc in multiple

applications

Multiple molbloc calibrations are now supported

for each gas. This means that you can now have

a molbloc calibrated separately for use both at

high pressure (upstream of the device under test)

and low pressure (downstream of the device

under test) to support different applications

instead of requiring two molblocs or manually

loading separate molbloc calibration files. All

calibrations are stored on the molbloc EEPROM

and the user simply selects the calibration type

from the molbox1+ front panel or via molbox1+

remote interface.

molbloc-S range example with device under test

at atmospheric pressure

Molbloc-S element

Usable range with SP calibra-

tion and molbox1 A700K

Usable range with HP calibra-

tion and molbox1+S A2M

1E2-S 15 to 50 slm* 20 to 200 slm

5E2-S 67 to 250 slm* 100 to 1000 slm

*Minimum usable flow of molbloc-S elements with SP calibrations are limited by back pressure

requirements for sonic flow when used upstream of a device at atmospheric pressure. Flow

values are in standard liters per minute referenced to 0 °C.

3 Fluke Calibration molbox1+ Flow Terminal

COMPASS® for molbox and new

COMPASS® for Flow software add

automation and more

COMPASS calibration assistance software takes

molbloc/molbox to the next step in automating

calibrations. COMPASS and a personal computer

work with molbloc/molbox to create a modern,

full function, turnkey system for calibrating and

testing flow devices.

COMPASS sets up device under test (DUT)

records (also known as unit under test), defines

and associates test procedures with DUTs, runs

tests, acquires reference and test data, pro-

duces standard and custom calibration reports.

Mass flow device gas correction factors and gas

density corrections for volumetric devices like

rotameters are easily supported, with options to

dynamically calculate the corrected flow using

automatic input of pressure and temperature

measurements. All reference, DUT and test data

are collected and stored in standard delimited

files that can be easily downloaded to other

applications.

A new version of the software, COMPASS for

Flow, brings features to flow calibration that

were previously only available in Fluke Calibra-

tion’s COMPASS for Pressure software. These

include:

• Ability to export data to Fluke Calibration

MET/TRACK® software.

• Enhanced support for devices under test

requiring custom calculations on output indi-

cations, special communications support and

calibration of multiple devices at once.

• Macro support to handle almost unlimited test

system automation.

• More complete and flexible support for acces-

sory devices like MFC-CB (Fluke Calibration

mass flow controller control box).

4 Fluke Calibration molbox1+ Flow Terminal

General specifications

Power requirements 85 V ac to 264 V ac, 47 Hz to 440 Hz, 18 VA max consumption

Normal operating temperature range 15 °C to 30 °C (59 °F to 86 °F)

Storage temperature range -20 °C to 70 °C (-4 °F to 158 °F)

Vibration Meets MIL-T-28800D

Weight 6.8 kg (15 lb) max

Dimensions (WxHxD) 32 cm x 12 cm x 30 cm (12.6 in x 4.7 in x 11.8 in) approx.

Communication ports RS-232 (COM1), RS-232 (COM2), IEEE-488.2

Pressure connections

(molbox1+ and molbloc)

Quick connectors equivalent to Swagelok® QM Series (SS-QM2-B200)

Flow ranges <1 sccm to >5000 slm. See separate molbloc-L and molbloc-S range tables

Flow measurement rate 1 second

Gases supported

(Consult your sales representative for a

current list of gases available for factory

molbloc calibration.)

Nitrogen (N2), Air, Argon (Ar), Carbon Monoxide (CO), Helium (He), Oxygen (O2),

Carbon Dioxide (CO2), Carbon Tetrafluoride (CF4), Ethane (C2H6), Ethylene (C2H4),

Fluoroform (CHF3), Hexafluoroethane (C2F6), Hydrogen (H2), Methane (CH4),

Nitrous Oxide (N2O), Propane (C3H8), Sulfur Hexafluoride (SF6), Butane (C4H10),

Octafluorocyclobutane (C4F8), Xenon (Xe)

Valve driver option (8) 12 V outputs. Each output can sink 500 mA at 12 V, max 1 Amp total

MFC control option

(analog input/output)

Nominal voltage range: 0 V dc to 6 V dc input, 0 V dc to 5 V dc output

Nominal current range: 4 mA to 20 mA input, 4.01 mA to 20 mA output

Accuracy: ± 0.1 % FS (set), ± 0.05 % FS (measure)

Pressure measurement

Type Q-RPT Characterized Quartz Reference Pressure Transducers – Oscillating

quartz crystal with mechanical bellows

Calibrated pressure range (full scale)

A700K 0 to 600 kPa absolute (0 to 87 psia)

A350K 0 to 300 kPa absolute (0 to 44 psia)

S A1.4M (molbloc-S only) 0 to 1.2 MPa absolute (0 to 174 psia)

S A2M (molbloc-S only) 0 to 2 MPa absolute (0 to 290 psia)

Measurement uncertainty (one-year)

Absolute pressure4± (0.01 % of reading or 0.003 % Q-RPT span, whichever is greater)

Differential pressure (A700K with Tare) ± (8.4 Pa (0.0012 psi) or 0.032 % ∆P, whichever is greater)

Differential pressure (A350K with Tare) ± (4.2 Pa (0.0006 psi) or 0.026 % ∆P, whichever is greater)

Temperature measurement

Type molbloc PRTs with molbox1+ Ohmic Measurement System

Range (FS) 0 to 40 °C

Resolution 0.01 °C

molbloc PRT precision ± 0.02 °C (15 to 30 ˚C)

On-board

Reference resistor 100 and 110 W ± 0.01 %, stability < 25 ppm/year

Ohmic measurement ± 0.02 % of reading (15 °C to 30 °C)

5 Fluke Calibration molbox1+ Flow Terminal

Flow measurement

with molbloc-L laminar flow elements

Standard molbloc calibration Premium molbloc calibration

Range 0 to 100 % molbloc full scale 0 to 100 % molbloc full scale

Resolution 0.0015 % FS 0.0015 % FS

Precision1± 0.07 % of reading,

± 0.007 % FS under 10 % FS

± 0.07 % of reading,

± 0.007 % FS under 10 % FS

Stability (one-year)2± 0.09 % of reading,

± 0.009 % FS under 10 % FS

± 0.03 % of reading,

± 0.003 % FS under 10 % FS

Measurement uncertainty3 (For any gas for which

the molbloc in use is calibrated)

± 0.2 % of reading,

± 0.02 % FS under 10 % FS

± 0.125 % of reading,

± 0.0125 % FS under 10 % FS

with molbloc-S sonic nozzle flow elements

Standard molbloc calibration Premium molbloc calibration

Range 10 % to 100 % molbloc full scale 10 % to 100 % molbloc full scale

Resolution 0.0015 % FS 0.0015 % FS

Precision1± 0.06 % of reading ± 0.06 % of reading

Stability (one-year)2± 0.05 % of reading ± 0.03 % of reading

Measurement uncertainty3 (For any gas for which

the molbloc in use is calibrated) ± 0.2 % of reading ± 0.125 % of reading4

1 Precision: Combined linearity, hysteresis, repeatability.

2 Stability: Maximum change in zero and span over specified time period for typical molbox and molbloc used under typical conditions. As

stability can only be predicted, stability for a specific molbox and molbloc should be established from experience.

3 Measurement uncertainty: Maximum deviation of the molbox1+ flow indication from the true value of the flow through the molbloc including

precision, stability and Fluke calibration.

4 With regular use of Autozero. Add 0.005 % of Q-RPT span for one year without use of AutoZero, (translates to 0.005 % FS for molbloc-S, does

not significantly affect molbloc-S standard calibration or molbloc-L uncertainty.)

All uncertainty specifications reported at k=2

Upgrading is easy

Upgrading from molbox1 to molbox1+ is economical and easy. A hardware and

software upgrade can be performed at a Fluke Calibration factory. To upgrade and

achieve the new specifications and features offered by molbox1+ the following steps

are performed on your system at Fluke Calibration.

1) molbox1+ hardware/software changes.

Any required parts are changed to make

your molbox materially identical to a factory

produced molbox1+. The molbox is flashed

to v6.0 embedded software. Two options are

available: Upgrade your existing molbox1 to

meet molbox1+ specifications, or Trade up to

a new molbox1+, capturing savings by reus-

ing a few key parts.

2) Q-RPT characterization of molbox1 inter-

nal pressure transducers. Both existing

internal pressure transducers are used in the

new molbox1+. Extensive characterization of

the transducers enhances their precision and

ensures they meet molbox1+ specifications.

3) molbloc hardware updates. molbloc-L

or molbloc-S elements to be used with the

molbox1+ require hardware modifications to

support the premium uncertainty specification

and a new data structure.

4) New molbloc gas calibrations. molblocs

are fully modeled and calibrated following

hardware updates to realize the benefits

of the enhanced gas property data used in

molbox1+, Fluke Calibration’s improved cali-

bration chain and new molbloc linearization

and modeling techniques.

The entire system will be upgraded and returned

to you with new specifications and calibration

certificates at a fraction of the cost of a new

system.

6 Fluke Calibration molbox1+ Flow Terminal

Ordering information

Options and accessories

3078336 MFC Control Option

Set and read analog voltage and current MFCs. Optional board is built-into

molbox1+ and connector is on rear panel. Delivered with MFC cable and

connection kit.

3069585 Rack Mount Kit

Standard 19 in. rack mount kit for molbox1+. Panel is 5.25 in. (3U) high.

New molbloc calibration options

Each molbloc calibration option can now be ordered as standard or premium.

Premium molbloc calibrations result in an improved uncertainty specification

when the molbloc is used with a molbox1+ terminal. molbloc pressure-

dependent calibration options are listed below. molbloc flow ranges are

dependent on the calibration pressure option and gas chosen. See the molbloc-L

range sheet and molbloc-S data sheet for available molbloc ranges.

molbloc-S (specify Premium or Standard)

Calibration Type Operating Pressure (absolute)

Low pressure 20 to 200 kPa (3 to 30 psia) absolute upstream of the molbloc

Standard pressure 50 to 500 kPa (7 to 70 psia) absolute upstream of the molbloc

High Pressure (New calibration option) 200 kPa to 2 MPa (29 to 300 psia) absolute upstream of the molbloc

molbloc-L (specify Premium or Standard)

Calibration Type Operating Pressure (absolute)

Downstream Atmospheric pressure downstream of the molbloc

Low Pressure 200 to 325 kPa (29 to 47 psi) absolute upstream of the molbloc

High Pressure 325 to 525 kPa (47 to 76 psi) absolute upstream of the molbloc

molbox1+ Models

Item No. Model Description molbloc Compatibility

3500013 MOLBOX1+ A700K 700 KPa (100 psia) Flow Terminal For molbloc-L and molbloc-S

3500024 MOLBOX1+ A350K 350 KPa (50 psia) Flow Terminal For molbloc-L and molbloc-S

3500049 MOLBOX1+S A2M SONIC 2 MPa (300 psia) Flow Terminal New molbloc-S only terminal

3500051 MOLBOX1+S A1.4M SONIC 1.4 MPa (200 psia) Flow Terminal New molbloc-S only terminal

Fluke Calibration

PO Box 9090,

Everett, WA 98206 U.S.A.

Fluke Europe B.V.

PO Box 1186, 5602 BD

Eindhoven, The Netherlands

For more information call:

In the U.S.A. (877) 355-3225 or Fax (425) 446-5116

In Europe/M-East/Africa +31 (0) 40 2675 200 or Fax +31 (0) 40 2675 222

In Canada (800)-36-FLUKE or Fax (905) 890-6866

From other countries +1 (425) 446-5500 or Fax +1 (425) 446-5116

Web access: http://www.flukecal.com

©2009-2014 Fluke Calibration. Specifications subject to change without notice.

Printed in U.S.A. 9/2014 3500469E_EN Pub ID: 11563-eng Rev 03

Modification of this document is not permitted without written permission

from Fluke Calibration.

Fluke Calibration. Precision, performance, confidence.™