Part No.: 09F4000

Flow Meter FM-40/70

Product features

  • Float-type flow meter for front-panel mounting
  • With fine control needle valve in the gas inlet
  • Measuring range: 7 to 70 Nl/h air
  • With integrated tube connections DN 4/6
  • Compact, flat design
  • Corrosion-resistant
  • Material of sample-contacting parts: glass, PVDF, Viton®
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Flow Meter FM-40/70

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Flow Meter FM-40/70

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Data sheet 120 KB
Unit calculator

Barometric adjustment of the operating altitude of O₂ analyzers without pressure compensation

Enter the planned operating altitude in the field. Set the analyzer to the calculated O2 vol% value at 1013 mbar (altitude = 0 m) in air to measure at the planned operating altitude without barometric error.

Result: 22,9378 [vol%] need to be set to measure at the planned altitude without barometric error.*

*Air with standard pressure 1013 mbar = 20.93 vol% O₂

Pressure drop and delay time

Enter your values in fields 1 to 3.

1

2

3

Result: 3,39 Delay time approx. in [s]*

* Single change of gas, for 90 % response time approx. 3 changes of sample volume are required.

Calculation of the pressureless 100 % H₂O saturation

Enter the required H₂O dew point (°C).
The calculation only provides sufficiently accurate values in the temperature range between -20 °C and +90 °C.

Pressure units

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Temperature units

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Length units

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Area units

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Volume units

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Weight units

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Energy units

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Flow rate

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Flow velocity

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Performance units

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Corrosion-resistant, with needle valve for front-panel mounting or optionally for wall mounting

The compact, flat, corrosion-resistant FM40 flow meter for front- panel mounting is used for flow control of gas media in analysis devices and systems.
Float‑type flow meter FM‑40/70 for front‑panel mounting, with needle valve, measuring range: 7 to 70 Nl/h, medium: air, connection: DN 4/6, material: PVDF, Viton®, glass

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