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Product ID : 88
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molbloc flow elements are connected to molbox RFM Flow Monitors with two pressure connections and one data line. molbox RFM Flow Monitors read calibration data off the molbloc EEPROM and measures molbloc upstream and downstream pressure with a built-in high accuracy Reference Pressure Transducers (RPTs). An ohmic measurement system reads the resistance of the molbloc platinum resistance thermometers from which molbloc temperature is calculated. Using the molbloc calibration data, pressures, temperature and gas properties stored in molbox RFM memory, the flow rate of the gas flowing through the molbloc is calculated. For molbloc-L flow elements, a microrange option is available to increase flow measurement resolution and accuracy under 10 % FS of the flow range.

molbox RFM and molbloc flow elements are useful in a variety of measurement, test and calibration applications in which highly accurate measurement of low gas flows is needed. molbox RFM is specifically designed for applications in which a highly compact presentation, great rangeability and reduced cost are the primary considerations. A second model, molbox1+, is available for applications in which lowest possible uncertainty is the top priority. To configure your mass flow calibration system, see the pages that follow to select the molbloc and pressure dependent calibrations to best cover your flow ranges and pressure conditions. molstic mounting systems and COMPASS® for molbox Flow calibration software are available to complete the system.

Key Features:

  • Covers the flow range of 1 sccm to 100 slm with molbloc-L, and up to 5000 slm with molbloc-S
  • Select from 20 different gases
  • Accredited measurement uncertainty of ± 0.5 % of reading with up to 100:1 rangeability
  • Internal valving for on-board purge, leak test and tare support
  • Includes advanced measurement functions such as totalize, average, hi/lo and deviation
  • Complete front panel control and RS232 and IEEE-488 remote communications
  • Measures mass and volume flow with user setable reference pressure and temperature conditions

molbox RFM Reference Flow Monitors

 

molbloc-L (ranges 1E1-L thru 3E4-L)

molbloc-S (all ranges)

Measurement update rate

 

1 second

1 second

Range

to molbloc full scale depending on gas and molbloc pressure

dependent calibration type (see molbloc-L range sheet)

The flow related to 20 kPa to 200 kPa absolute (3 psia to 30 psia) or 50 kPa to 500 kPa absolute (7 psia to 70 psia) upstream

(see molbloc-S range sheet)

Resolution

0.01 % FS

± 0.01 % of reading

Linearity

± 0.23 % of reading from 10 % to 100 % FS,

± 0.023 % FS under 10 % FS

± 0.25 % of reading

Repeatability

± 0.1% of reading from 10 % to 100 % FS,

± 0.01% FS under 10 % FS

± 0.1 % of reading

Precision1

± 0.25 % of reading from 10 % to 100 % FS,

± 0.025 % FS under 10 % FS

± 0.3 % of reading

Predicted stability2
(one year)

± 0.15 % of reading from 10 % to 100 % FS,

± 0.015 % FS under 10 % FS

± 0.2 % of reading

Measurement uncertainty3

 

± 0.5 % of reading from 10 % to 100 % FS,

± 0.05 % FS under 10 % FS

± 0.5 % of reading from 50 kPa to 500 kPa, ± 0.5 % of the flow @

50 kPa from 20 kPa to 50 kPa

 

molbox RFM with Microrange option

 

molbloc-L (ranges 1E1-L thru 3E4-L)

molbloc-L (ranges 1E5 only)

Measurement update rate

1 second

1 second

Range

0 to molbloc full scale depending on gas and molbloc pressure

dependent calibration type (see molbloc-L tables)

0 to molbloc full scale depending on gas and molbloc pressure

dependent calibration type (see molbloc-L tables)

Resolution

0.01 % FS, 0.001 % FS under

 10 % FS

0.01 % FS

Linearity

± 0.23 % of reading from 1 % to 100 % FS, ± 0.0023 % FS under 1 % FS

± 0.25 % of reading from 5 % to 100 % FS,

± 0.0125 % FS under 5 % FS

Repeatability

± 0.1 % of reading from 1 % to 100 % FS,

± 0.001 % FS under 1 % FS

± 0.2 % of reading from 5 % to 100 % FS,

± 0.01 % FS under 5% FS

Precision1

± 0.25 % of reading from 1 % to 100 % FS,

± 0.0025 % FS under 1% FS

± 0.32 % of reading from 5 % to 100 % FS,

± 0.016 % FS under 5 % FS

Predicted stability2
(one year)

± 0.15 % of reading from 1 % to 100 % FS,

± 0.0015 % FS under 1 % FS

± 0.2 % of reading from 5 % to 100 % FS,

± 0.01 % FS under 5 % FS

Measurement uncertainty3

± 0.5 % of reading from 1 % to 100 % FS,

± 0.005 % FS under 1 % FS

± 0.5 % of reading from 5 % to 100 % FS,

± 0.025 % FS under 5 % FS

Includes:

Model Name Description
molbox RFM

molbox RFM Reference flow monitor

Includes:
Users manual, calibration certificate, power cord, (2) molbox RFM to molbloc pressure lines, (1) molbox RFM to molbloc data line, (2) Straight through pressure quick connectors

 

5141-100

molbox RFM, molbloc 5E1-L 10 to 100 sccm

Included:

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E1-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5141-1K

molbox RFM, molbloc 5E2-L 100 to 1,000 sccm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E2-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5141-10K

molbox RFM, molbloc 5E3-L 1 to 10 slm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E3-L laminar flow element
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5141-50K

molbox RFM, molbloc 3E4-L 5 to 50 slm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 3E4-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5142-1K

molbox RFM-M, molbloc 5E2-L 10 to 1,000 sccm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E2-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5142-10K

molbox RFM-M, molbloc 5E3-L 0.1 to 10 slm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E3-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5142-50K

molbox RFM-M, molbloc 3E4-L 0.5 to 50 slm

Included: 

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 3E4-L laminar flow element 
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

 

5144-50K

molbox RFM-M, molblocs 5E2-L and 3E4-L10 sccm to 50 slm

Included:

  • molbox RFM (5141 kits) or molbox RFM-M (5142 and 5144 kits) reference flow monitor with quick connect molbloc pressure lines, molbloc communication cable, line cord and user manual
  • molbloc 5E2-L and 3E4-L laminar flow elements
  • molstic-L mounting system, with fine pressure regulator and an isolation valve and precise flow metering valve for each molbloc-L
  • Tubing and adaptors to connect gas supply and device under test, including 1/4 in tube fitting, 1/4 in NPT female, 1/4 in NPT male, 1/8 in NPT male and 1/4 in BSP male

Accessories common to all models:

Accessory Description
MFC-CB Control Box

Includes:
(2) MFC/MFM connection cable kits
Calibration cable
Power cord
Operation and maintenance manual
Calibration report

COMPASS for molbox software

Calibration assistance software for molbloc/molbox users

molstic-L Mounting Systems

For molbloc-L Mass Flow Elements

molstic-S Mounting System

For molbloc-S Mass Flow Elements

 

RFM-RMK

Rack mount kit

RFM 02

Microrange

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