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OLCT 200 User Manual |
72
9.2.3
IR-CO2 Sensor
The CO2 IR sensor is factory configured to accurately monitor Carbon Dioxide gas.
The output of the IR sensor can be disrupted by sudden changes in temperature. If
there is an excessive change in the ambient temperature, gas sample temperature or
flow rate, then the output signal will be monmentarily frozen. Correct operation is
restored when the effects of the transient have settled. Rates of change in the ambient
temperature should be restricted to 2
C/minute and gas flow rates kept below 0.6
L/minute.
Extreme pressure variations will cause errors in readings. The unit should be
recalibrated if the atmospheric pressure change is greater than 10% from the orignial
pressure.
Do not expose the sensor to corrosive gases such as Hydrogen Sulphide.
Do not allow condenseation to occur inside the sensor.
9.2.4
IR-Ethylene Sensor
The Ethylene IR sensor is factory configured to accurately monitor Ethylene gas.
The output of the IR sensor can be disrupted by sudden changes in temperature. If
there is an excessive change in the ambient temperature, gas sample temperature or
flow rate, then the output signal will be monmentarily frozen. Correct operation is
restored when the effects of the transient have settled. Rates of change in the ambient
temperature should be restricted to 2
C/minute and gas flow rates kept below 0.6
L/minute.
Extreme pressure variations will cause errors in readings. The unit should be
recalibrated if the atmospheric pressure change is greater than 10% from the orignial
pressure.
Do not expose the sensor to corrosive gases such as Hydrogen Sulphide.
Do not allow condenseation to occur inside the sensor.
9.3 Photoionization Detection (PID) Sensors
Factory Default Settings
Ref
#
Gas
Range
Resolutio
n
Cal Gas
Low Alarm
High
Alarm
30
Volatile
Organic
Compounds
0-500ppm
1 ppm
100 ppm
(Isobutylene)
100 ppm
200 ppm
! Caution ! Note on Silicones:
PIDs are not permanently damaged by Silicones but they can potentially harm the
windows of the lamps and reduce response to some gases. This can usually be
Summary of Contents for OLCT 200
Page 4: ...OLCT 200 User Manual 4...
Page 14: ...OLCT 200 User Manual 14 Figure 2 3a Outline Drawing OLCT 200 Wired Models...
Page 19: ...OLCT 200 User Manual 19 2 6 2 Installation Drawing 11 0100...
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Page 38: ...OLCT 200 User Manual 38 Figure 4 1 Calibration Gas Input...
Page 61: ...OLCT 200 User Manual 61 Figure 6 5...
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