Flow and Pressure Modules 2
Advanced Operation Manual 25
pressure mode can be very useful with a gas sampling valve,
where it ensures that the sample pressure in the loop
remains constant.
For channel 1, gas input is via a threaded fitting. Gas output
is via a coil of metal tubing with a Swagelok fitting on the
end.
For channel 2, the connections are the same as for channel
1 if channel 2 is to be used as a forward- pressure regulator.
They are reversed—extra fittings/adapters will be needed—if
it is to be used as a back- pressure regulator.
PCMs can be installed in several locations:
• In slot 1. The name is PCM A.
• In slot 2. The name is PCM B.