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© 2022 All rights reserved. Data subject to change without notice.
LPT-M - Operation Manual
Rev. B | 2022.03
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Telephone: +1.604.940.8741
Email: [email protected]
Website: www.critical-environment.com
In no event will CETCI, its officers or employees be liable for any direct, special,
incidental or consequential damages resulting from any defect in any manual,
even if advised of the possibility of such damages.
2 INTRODUCTION
2.1 General Description
Thank you for purchasing our LPT-M Modbus® Transmitter. The LPT-M is a
full-featured, digital gas detector for monitoring toxic and combustible gases
in non-hazardous (non-explosion rated) environments such as commercial
HVAC and light industrial applications. It is designed to communicate with a
Controller or Building Automation System (BAS) with Modbus® RTU RS-485
serial communication.
Sensor configuration options include one, two or three channel operation with a
comprehensive choice of sensors for many toxic gases (electrochemical) and
combustible (catalytic) gases, plus PID TVOCs. All LPT-M transmitters operate
by diffusion. The sensors utilized in this device are accurate enough to measure
to Occupational Health & Safety (OHS) hazardous levels for toxic gases.
Operating as a digital transmitter or as a standalone fixed system, the LPT-M
offers an audible internal alarm, one dry contact relay, graphic LCD display
with user selectable functions, temperature compensation and an automatic
thermal resetting fuse all in a RoHS compliant package and standard water /
dust tight enclosure. With the optional splash guard installed, the enclosure is
IP54 rated and will be protected in water spray or wash down applications. An
