Quick Reference Guide
Internal Silicone Heater used in CET Transmitters
The following CET transmitters may be ordered with an internal silicone heater for cold environment applications:
- LPT-A Analog Transmitter
- ESH-A Remote Sensor
- LPT-M Modbus Transmitter
- CGAS-A Detector
- CGAS-D Detector
The heater is fixed to the inside of the enclosure on the base and requires an installer supplied, external 24V power source to operate. The two blue wires have no polarity and can be connected to either terminal of a 24VAC or 24VDC power source. The heater has a switch and will turn on and off appropriately to maintain operating temperature inside the enclosure.
The heater requires 10W of power.
Product Images
Image of a Critical Environment Technologies (CET) LPT transmitter unit, identified as a Gas Detector for R410A, with a digital display.
Image of a CET LPT transmitter unit, identified as a Gas Detector, with a digital display.
Image of a CET LPT transmitter unit, identified as a Gas Detector, with a digital display.
Image of a CET ESH transmitter unit, identified as a Gas Detector for CO and C3H8, with a digital display.
Installation Diagram
Diagram showing the internal silicone heater installation. The heater element is visible inside a black enclosure base. Two blue wires extend from the heater. A label above a connection line reads '110V'. Another label indicates 'INSTALLER SUPPLIED 24VAC OR 24VDC (NOMINAL) POWER SOURCE'. The blue wires are marked with '24VAC/24VDC' on the enclosure.