Flowmeter by Markes International Ltd

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Accurate and repeatable gas flow measurement.

Accurate and repeatable gas flow measurement is fundamental to obtaining good results from your thermal desorption-gas chromatograph. The traditional bubble flowmeter, relying as it does on the reaction time of the operator, is a potential source of error.

The digital flowmeter eliminates this source of error and makes gas flow easement easier and more accurate. The flowmeter allows measurement of eight gases: air, argon, argon–5% methane, carbon dioxide, helium, hydrogen, nitrogen and oxygen, in the range 0.1–500 mL/min. Rresolution is 0.1 mL/min and accuracy is typically better than ±2.5%.


  • Range: 0.1–500 mL/min (0.1–275 mL/min for carbon dioxide).
  • Resolution: 0.1 mL/min.
  • Accuracy: 0.4 mL/min or 2.5%.