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Markes offers a solid state digital flowmeter1 for measuring TD gas flows e.g. split flow, desorb flow, etc.
It provides measurement of eight gases: air, argon, argon/5% methane, carbon dioxide, helium, hydrogen, nitrogen and oxygen, within a range of 0.1 to 500 mL/min.
Resolution is 0.1 mL/min and accuracy is typically better than ±2.5%.
Calibration is traceable to the UK National Physical Laboratory (NPL) standards and an annual re-calibration service is offered on a “return to factory” basis.
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