Flowmeter calibration in-situ means 100% availability for the Allison Model GF90 thermal dispersion mass flow meter for flare and vent emissions measurement.

Flowmeter calibration in-situ, means 100% availability for emissions measurement. The Allison Model GF90 thermal dispersion mass flow meter, is ideal for flare and vent measurement. With the ability to measure at velocities as low as 0.08mps, it accurately assesses leakage at very low pressure, whilst remaining rugged enough for corrosive high temperates.

With 800:1 turndown and mixed hydrocarbon gas calibrations, the 'no moving parts', Exd certified GF90 has been used extensively on and offshore for flaregas measurement.

The 'in-situ' test function means it does not need to be removed from service to verify the calibration, thus offers true 100% availability, something which is becoming increasingly important for carbon emissions trading .