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LPT - Operation Manual
Rev. E | 2021.03
4 SENSOR SPECIFICATIONS
4.1 List of Available Internal Sensors
Internal Electrochemical
Sensors
Part Number
Range
Lifespan
Ammonia (NH
3
)
LPT-NH3
0 - 500 ppm
~2 years
Carbon Monoxide (CO)
LPT-TCO
0 - 200 ppm
~3 years
Chlorine (Cl
2
)
LPT-CL2
0 - 5.0 ppm
~3 years
Hydrogen Sulphide (H
2
S)
LPT-H2S
0 - 50 ppm
~2 years
Nitrogen Dioxide (NO
2
)
LPT-END
0 - 10 ppm
~3 years
Oxygen (O
2
)
LPT-O2
0 - 25% vol
~3 years
Sulphur Dioxide (SO
3
)
LPT-SO2
0 - 20 ppm
~2 years
4.2 Calibration Extending Firmware (CEF) and Sensor
Aging for CO and NO
2
Sensors
LPT systems with integral CO or NO
2
electrochemical sensors have been programmed with our CEF
(Calibration Extending Firmware). This fi rmware takes into consideration the aging of the sensors
so that less frequent calibrations are acceptable in less-critical applications such as parking garages.
The system tracks the age of the sensor and automatically compensates for the reduced output of
the sensor as it ages.
