227 • Sensor Description GX-6000 Operator’s Manual
Sensor Description
The PID sensor is a cylindrical sensor with a diffusion opening on the front
and 3 pins on the back. It is installed in a white housing that has three sockets
on the bottom that mate with the GX-6000 instrument. The PID sensor must
always be installed in the first smart sensor position which is located in the
top left corner of the sensor block.
Tube and Tube Holder
Benzene detection typically requires the use of a filter tube. The filter tube
will scrub out most VOCs other than benzene but will not scrub out
nitrobenzene, cyclohexane, n-octane, or n-pentane. The filter tube is installed
in a tube holder and needs to be replaced regularly.
A tube holder and a box of tubes are included with 10.0 eV/benzene versions
of the GX-6000.
Tube
Each tube has a 3/4 line on it. If the tube becomes discolored and if the
discoloration extends beyond the 3/4 line, the tube is no longer effectively
scrubbing non-benzene gases and needs to be replaced.
Tubes must be stored in a cool, dark place (0 - 25 °C/ 32 - 77 °F) and must be
used before the expiration date that is printed on the box. If the tubes are
being stored in a refrigerator, take them out of the refrigerator and let them sit
overnight before using them.
Tubes do not contain cadmium, mercury, or chrome and may be disposed as
general waste.
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