At a chlor-akali membrane plant which produces saturated hydrogen, typically 300mbar at 200F, max design of 400mbar. We have had continuing issues with leak through on 12 inch butterfly valves. These are the primary hydrogen isolation valves off the electrolyzers. Hydrogen at system pressure is...
We produce 36% HCl and use Mil-Ram sensors. Model TA-2102 or similar. Read in the 0-10ppm range.
As said, wash up with water until neutral, or if highly acidic, a soda ash solution can be used to neutralize.
