181 • Interference GX-6000 Operator’s Manual
channel from one type of ESS-03 sensor to another and the GX-6000 will
automatically load all the sensor parameters and configure the ESS-03
channel for the new sensor. See “Replacing the ESS-03 Sensor or Changing
Sensor Type” on page 190 for instructions to replace or change an ESS-03
sensor.
The ESS-03 sensor is a cylindrical sensor with a diffusion opening on the
front and a connector on the back. The ESS-03 sensor is installed in one of
the two smart sensor sockets and is held in place by the sensor gasket and the
flow chamber.
Interference
Although the GX-6000 can support up to two ESS-03 sensors, many
combinations are impractical for various reasons including sensor cross
sensitivity to other gases.
The table below indicators some of the gases that will cause an increased gas
reading for the affected sensor. For example, if you are attempting to detect
HCN but H
2
is also present, the instrument’s HCN reading will be higher
than the environment’s actual HCN level.
The table below indicates some of the gases that will cause a negative
response and a decreased reading for the affected sensor. For example, if you
are attempting to detect SO
2
but NO
2
is also present, the instrument’s SO
2
reading will be lower than the environment’s actual SO
2
level.
Table 20: Positive Interference
Sensor Affected By:
Cl
2
•HCl
•SO
2
HCN • H
2
•SO
2
SO
2
•H
2
Table 21: Negative Interference
Sensor Affected By:
HCN • NO
2
NH
3
• HCl
•NO
2
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