ryangriggs
Lifetime Supporting Member
Hi, I have been tasked with adding basic telemetry to an outdoor, non-enclosed natural gas substation. The substation is not enclosed in a building, and is basically just a loop of pipe above ground, having two sets of manual valves and regulators. (AC power is available nearby.)
They want to see pressure and temperature readings as the gas leaves the substation. It's already fitted with 1/4" FNPT ports welded directly into the 6" steel pipe.
Gas pressure is specified as 0-60psig.
Do these need to be intrinsically safe or explosion-proof sensors? I'm not finding specific codes/regulations for this application, but may not be looking in the right place. Any other recommendations for selecting the right sensors? Ceramic vs stainless sensing membrane, etc?
Also, should the temperature be sampled from the middle of the flow (i.e a probe), or pipe wall (clamp-on)?
Thanks!
They want to see pressure and temperature readings as the gas leaves the substation. It's already fitted with 1/4" FNPT ports welded directly into the 6" steel pipe.
Gas pressure is specified as 0-60psig.
Do these need to be intrinsically safe or explosion-proof sensors? I'm not finding specific codes/regulations for this application, but may not be looking in the right place. Any other recommendations for selecting the right sensors? Ceramic vs stainless sensing membrane, etc?
Also, should the temperature be sampled from the middle of the flow (i.e a probe), or pipe wall (clamp-on)?
Thanks!