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© 2021 All rights reserved. Data subject to change without notice.
LPT - Operation Manual
Rev. E | 2021.03
10 MAINTENANCE
The LPT transmitter requires virtually no maintenance other than regular calibration of the sensor.
The transmitter should be monitored for possible damaging conditions.
4. The sensor port should be kept free of dirt or soot build up.
5. If in a damp location source of water should be shed from contacting the top of the
transmitter.
6. If located in a working area the front of the transmitter should be kept clear.
7. If painting is to be conducted in the transmitters location the transmitter needs to be
protected from over spray and the sensor port should not receive paint fumes – these fumes
may damage or reduce the life of the sensor.
11 TROUBLE SHOOTING
LPT won’t power up. (Outer LED is OFF)
Is the power properly connected? Refer to Wiring examples.
4 - 20 mA signal loop has not been connected properly. Check the connections.
Outer LED will fl ash with a short OFF time and long ON time and the current loop will
output 20mA.
The LPT is in fault mode. If re-calibrating the sensor fails, replace the transmitter.
Outer LED will fl ash four times then pause.
The LPT is in Uninitialized mode. Return the LPT to factory.
During calibration, the internal LED will blink constantly.
Jumper-1 is missing. Install the jumper to desired gas concentration.
