Mass Flow Meter

Mass Flow Meter

Used for a multitude of gas flow measurement applications.

  • 1,987.00 $ CAD

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The Mass Flow Meter 4140 (0.01-20 L/min / Air, O2 , N2 / 1/4" tube) can be used for a multitude of gas flow measurement applications.

Whether measuring gas flows in a laboratory or manufacturing setting, TSI mass flow meters provide accurate results with multiple data output options. The display versions come complete with accessories making setup and operation fast and convenient.

The TSI mass flow meters are specified as two percent of flow rate reading. One TSI mass flow meter covers the same range as three percent (or more) of full scale devices, with better accuracy at most points. Four millisecond response ensures accuracy in fluctuating flows. This fast response time of the TSI mass flow meter is ideal for closed-loop control systems and integrated volume measurements. Low pressure drop of the TSI mass flow meter minimizes flow circuit back pressure and its impact on the system.


  • Medical
  • Industrial
  • Laboratory
Flow Measurement Accuracy
Air and O2±2% of reading or 0.005 Std L/min, whichever is greater
N2±3% of reading or 0.010 Std L/min, whichever is greater
General Specifications
Flow Measurement Range0.01 to 20 Std L/min
Flow Measurement Response4 ms to 63% of full scale flow
Gas CalibrationAir, O2, N2
Inlet/Outlet Diameter0.25" (6.4 mm)
LCD Display UnitsL/min, Std L/min
DC Power Input7.5 VDC ±1.5 V, 300 mA max
Analog0 to 10 VDC flow only, zero and span adjustable via RS232
Overall Dimensions5 x 2 x 1.25" (127 x 49 x 32 mm)