User guide

Flow and Pressure Modules 7
Advanced User Guide 159
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.
• In slot 5. If there are no PCMs in slots 1 and 2, the name is
PCM A. If another PCM is installed in either slot 1 or 2, the
PCM in slot 5 takes the name that is not being used (A or B).
If PCMs are installed in both slots 1 and 2, the name is PCM C.