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Operation
AirLink T3A Operator’s Manual
Operation
WARNING: Do not remove the sensor housing cap or enclosure lid while the circuits are
energized unless the area is determined to be non-hazardous. Keep the sensor
housing cap and enclosure lid tightly closed during operation.
Normal Operating Mode
While in Normal Operating Mode, the AirLink T3A continuously samples the air and updates the
measured concentration of the target gas on the display screen. The display, when in Normal
Operating Mode, appears as shown below.
The gas reading is sent back to the controller in 1-minute intervals when the reading is below the
background setting (see page 35). When the reading surpasses the background setting, the reading
is sent back to the controller in 5-second intervals.
NOTE:
The user interface will be slow to respond until the AirLink T3A establishes a
connection with a controller.
Manual Reset for Activated Latching Alarms
Relay alarms set to latching will not deactivate until the alarms are manually reset at the device.
This includes Alarm 1 and Alarm 2 indicator LEDs and optional wired relays. When latching
alarms have been activated, refer to the following instructions for how to manually deactivate the
alarms on your device:
1. Verify that the gas level reading is below the alarm level setting.
Reading above full scale
(4-20 mA output is 25 mA)
1. Measured gas concentration (reading)
2. Gas concentration unit of measure
3. Sensor element gas type