• Fully insert the free end of the 1/4" blue tube into the “Reference Exhaust” port of the UGC.
• Then fully insert the free end of the 1/4" red tube into the “Sample Exhaust” port of the UGC. The filter
should now be positioned horizontally, projecting away from the UGC.
Sensor Reference Tubing Connections
• Using a short length of 1/8” blue air line, connect the output “Reference Supply” port to the input
“Reference Return” port on the UGC.
Sensor Sample Tubing Connections
• Using an appropriate length of 1/8” red air line, connect the output “Sample Supply” port of the UGC
to the input “Sample Supply” port of the Oxygen Sensor.