GX-6000 Operator’s Manual Replacing a Sensor • 120
Replacing a Sensor
1 . Verify that the GX-6000 is off.
2 . Use a small Phillips screwdriver to unscrew the four screws holding the
flow chamber to the rest of the GX-6000’s case.
3 . Grasp the sides of the flow chamber and lift it away from the rest of the
case. The screws are captive screws and will not come out of the flow
chamber.
4 . Gently pull up the edges of the sensor gasket to loosen it from its
connections. Be sure not to lose any of the filters that are in it. The
sensors will be exposed.
5 . Locate the sensor you want to replace and remove it from its socket.
6 . Carefully insert the replacement sensor in the correct socket.
a. Be sure that the new sensor is installed in the same position as the old
sensor and that the following sensor priority for the smart sensor 1
position is maintained.
Table 14: Priority for Smart Sensor 1 Position
For example, if your instrument is a 4-gas + low range PID + high
range PID, the low range PID sensor should be in the smart sensor 1
position and the high range PID sensor should be in the smart sensor
2 position. If your instrument is a 4-gas + high range PID, the high
range PID sensor should be in the smart sensor 1 position and a
dummy sensor should be installed in the smart sensor 2 position. See
the figure below for the location of the smart sensor 1 and 2
positions.
High Priority
Low Priority
Low range PID
10.0 eV/benzene PID
High range PID
ESS-03 Chlorine
ESS-03 Ammonia
IR and other ESS-03 sensors
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