You all probably noticed I haven't been posting alot recently.
I've been building a process gas analyser for a client.
The only difference between a process gas analyser and a residual gas analyser is the process gas version samples at atmospheric pressure.
This beastie uses the Extorr 300 RGA head a Leybold turbovac 50 and an industrial PC from Avantek a 12 volt 18 watt 1.6GHZ 2 GB ram 0.5TB HDD 6 serial ports 6 USB ports two independant LAN ports (can be seem bottom right of pic).
Still to come the capillary heater that will go in the milled out diecast box in the pic the PCD of the holes = CF2.75" bolt pattern
capillary = 80 micron x 1 metre this will give 10 to the minus 6 millibar for the RGA. The heater is to stop volatiles from blocking the capillary