greenspark1
Senior Member
- Location
- New England
I'm looking at article 501.17 for the first time which requires process seals for applications with pressure or temperature. I have both in a job and am trying to figure out if the ABB instruments we're using need a process seal or not. There is no clear language on the instrumentation data sheets and 501.17 isn't very clear exactly what it's looking for. Of course instruments are sealed to keep out the gas it's measuring, but how much sealing is required to avoid a process seal? Any experience/advice?