Perma Pure GASS-2040 - Manual (Page 12)

12 GASS-2040 User Manual | Original Instructions
3.3 Plumbing
a. Sample Connection - GASS-2040 Probe version refer to Appendix D
With Optional Heated Line
1. Install heated line sealing fitting by threading hub into sleeve.
2. Ensure o-ring seal is installed on outside of enclosure (between sleeve
and enclosure wall).
3. Run heated sample line through entry seal and into enclosure.
4. Connect sample line to compression fitting (labeled “Wet Sample In”).
5. Shrink entry seal tubing around heated sample line with heat gun.
6. Connect sample outlet port of system to sample line running to analyzers.
High temperature heated line is not necessary for this connection. If sample
line will be exposed to freezing temperatures, freeze protected line is
suggested.
b. Purge Air Supply
Instrument Air
Purge gas must be of instrument grade with dew point no higher than –40 O C.
1. Connect regulated purge gas supply line to 1/4" female NPT purge inlet
port of membrane dryer (labeled “Instrument Air”). Pressure maximum is
100 psig.
Heatless Dryer (Optional)
1. Connect oil free compressed air line to port (labeled “Purge Gas Inlet”).
An oil coalescing pre-filter is recommended.
2. A 1/4” female NPT bulkhead fitting on bottom of enclosure is provided for
heatless dryer purge air exhaust. Humid air can be vented to atmosphere or
piped to remote location.
c. Filter Drain Connection (Optional)
Connect line from eductor outlet to designated collection/exhaust basin containing acid
absorption media to prevent release of exhaust to surrounding. 1/4” I.D. tubing can be
used for runs up to 10 feet, or larger I.D. tubing for longer exhaust lines. Line should
not restrict purge flow.