Selection of hydrogen medium pressure gauges
Thread Content
When measuring hydrogen-based media, is it necessary to use a pressure gauge specifically designed for hydrogen? For transmitters, we usually opt for those with gold-plated diaphragms. Is it also essential to install a hydrogen-specific pressure gauge at the site? It seems like the design institute didn’t require it either.
In terms of selection, a dedicated type should be chosen, but in practice I just use ordinary stainless steel, and that works fine too.
In terms of selection, a dedicated type should be chosen, but in practice I just use ordinary stainless steel, and that works fine too.
The old chemical engineering design specifications used to require dedicated hydrogen pressure gauges. However, the current version of HG/T20507-2014 has removed this requirement.
Give a like; that’s the standard way of speaking
No special requirements; a regular earthquake-resistant stainless steel pressure gauge will suffice.
On-site pressure gauges are not required, but transmitters are
Sir, what are your experiences with pressure transmitters in terms of temperature, pressure, and concentration?
API 551 specifies four situations in which gilding of the pressure transmitter diaphragm should be considered: 1. Wet hydrogen environments； 2. Hydrogen in corrosive environments ； 3. Hydrogen partial pressure ≥ 621 kPa; 4. Sensor temperature in a hydrogen environment ≥ 43°C. For reference, see details below: