High end gas flow calibration made simple

Fluke Calibration 5141, 5142 and 5144 molbox RFM gas flow calibrator kits feature molbox RFM and molbloc-L configurations optimized to cover a very wide workload combined with molstic-L and other interconnect hardware needed for a complete calibration system. Simply supply 90 psi of pure N2 or air to the system. An included regulator delivers a stable regulated flow to the molbloc. Downstream of the molbloc, an included metering valve allows you to regulate the mass flow value required for the DUT. It’s that simple; supply 90 psi gas upstream, tare the reading, and adjust the fine metering valve to deliver the desired mass flow rate with an accuracy of ± 0.5 % of reading. Fluke Calibration gas flow calibrator kits eliminate complication, but don’t compromise molbox/molbloc best in class performance.

  •  Flow ranges cover from 1 sccm to 50 slm
  • ± 0.5 % of reading total one-year accuracy
  • Measures mass and volume flow with user settable reference pressure and temperature conditions
  • Reference standard is upstream of the device under test, eliminating cross contamination and expensive damage to the flow elements
  • Integrated gas flow regulation and adjustment hardware
  • Expandable to over 5000 slm with additional molbloc flow elements and control hardware
  • Includes traceable calibration for operation in N2 and Air, with corrections for other gases
  • Gas supply and test adapters included for 1/4 in tube, 1/4 in NPT and 1/4 in BSP
  • Includes advanced functions such as totalize, average, hi/lo, deviation, on-board purge, leak test and tare, available from the front control panel or by RS-232 and IEEE-488 remote interfaces

Measurement specifications

Gas calibration included Nitrogen (N2), Air
Maximum working measurement line pressure 600 kPa (87 psi) absolute
Measurement range <1sccm to 50 slm, depending on model. Flow ranges depend on test gas. Ranged indicated for N2 and Air.


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
molbox RFM weight and dimwnsions

2.55 kg (5.6 lb) max

8 cm x 22.5 cm x 20 cm (3.1 in x 8.9 in x 7.9 in) approx

molstic with molbloc weight and dimensions (max)

9 kg (20 lb)

19 cm x 81.28 cm x 15.25 cm (7.5 in x 32 in x 6 in) approx

Supply gas required

99.998% pure N2 or Air regulated to 90 psig (600 kPa)

Note: a fine pressure regulator is included, but an additional regulator (not included) may be required to reduce pressure supplied to the 514X kit to approximately 90 psi

Gas calculations reported Nitrogen (N2), Air, Argon (Ar), Carbon Monoxide (CO), Helium (He), Oxygen (O2),
Carbon Dioxide (CO2), Carbon Tetrafluoride (CF4), Ethane (C2<;/sub>H6), Ethylene
(C2H4), Fluoroform (CHF3), Hexafluoroethane (C2F6), Hydrogen (H2), Methane (CH4),
Nitrous Oxide (N2O), Propane (C3H8), Sulfur Hexafluoride (SF6)
Flow connections for gas supply and device under test 1/4 in tube with adapters included for 1/4 in NOT and 1/4 in BSP

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