Perma Pure Mini-GASS 2812T - Manual (Page 12)

12 Mini-GASS User Manual
3.3 Plumbing
a. Sample Connection - Mini-GASS with Probe refer to Appendix C
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 Mini-GASS 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.
Without Heated Line
1. Connect sample line to bulkhead fitting (labeled “Sample Gas In”).
2. Connect sample outlet from Mini-GASS (labeled “Dry Sample Out”) to
sample line running to analyzer.
b. Purge Air Supply
Instrument Air
Purge gas must be of instrument grade with dew point no higher than –40 O C.
1. On model MG-1214, purge gas should be supplied to dryer via 0-30 slpm
flowmeter and regulator capable of supplying 0-50 psig. All other models
come with control panel which includes flowmeter and regulator.
2. Connect regulated purge gas supply line to 1/4" female NPT purge inlet
port of membrane dryer (labeled “Instrument Air”).
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 heatless
dryer purge air exhaust. Humid air can be vented to atmosphere or
piped to remote location.