There was currently no good solution for accurately measuring the flow of hydrogen. Now that the rise of cars that run on hydrogen can no longer be stopped, there is an increasing need for filling stations where this clean fuel can be purchased. The decrease will have to be measured accurately and that is not easy with the high pressure and low temperature that hydrogen has in liquid form.
KEM Kueppers, distributed in the Netherlands and Belgium by AE Sensors BV, has developed a mass flow meter with the TCMH 0450 TRICOR that is specially intended to accurately measure this hydrogen quantity at, among other things, filling stations. The TCMH is the first flow sensor in the world that has an MI-002/OIML137 certificate for hydrogen offtake applications. This is not so simple as hydrogen is stored under a very high pressure (operating pressure of up to 1050 bar) to keep it liquid. The material the sensor is made of is Sandvik@ Alloy HP160 to prevent it from becoming brittle over time. The mass flow meter is capable of achieving accuracies of ±0.5% of the measured value. The output is 4…20mA or pulses. Naturally, the mass flow sensor is ATEX, IECEx and cCSAus approved.
Nederlands