TENNEY ENVIRONMENTAL
Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4
Page 11
GN2 Purge System
5.3 Air Supply Connection (For Optional Equipment)
Your chamber will require a compressed air supply for the Dry Air Purge System option. The system is
mounted on the back side of the chamber. The supply should be clean and dry, and range from 80 PSIG
min. to 100 PSIG max. The connection type is ¼” FPT. Make sure the connection is secure. Reference the
corresponding “Option” section in this manual, or your chamber specifications for more details.
Flow Adjustments:
Adjust the flow
adjustment valve at the
supply connection to
maintain 100 PSIG max.
Adjust the flowmeter
metering valve to
approximately 300 cubic
feet per hour.
5.4 GN2 Connection (For Optional Equipment)
Your chamber will require a supply of gaseous nitrogen
for the GN2 Purge System option. The supply may range
up to 100 PSIG maximum. The connection is type 1/8”
NPT. Make sure the connection is secure. Reference the
corresponding “Option” section in this manual and your
chamber specifications for more details.
Flow Adjustment:
Adjust the metering valve to maintain approximately 300
cubic feet per hour.
Vent Port
Checkvalve
Chamber
ccess Port
Metering
Valve
GN2 Supply
Connection
1/8” NPT
Warning! Gaseous nitrogen displaces
oxygen. Make sure the area surrounding the
chamber is well ventilated to dilute the gas
vented from the chamber vent port
checkvalve.
Dry Air Purge System
Metering Valve
Flow Adjustment Valve
Twin Tower
Heatless Dryer
Vent Port
Checkvalve
Back Side o
Chamber (TJR)
Compressed Air Supply
Connection Input 1/4” FPT
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