CGT
Combustible Gas Sensor

Manning Systems CGT provides continuous detection of combustible gases in virtually any industrial environment. The 4/20 mA output gives rapid warning of gas buildup or leakage.

General Description

The CGT measures a wide variety of combustible gases and vapors, including methane, propane, hydrogen, alcohols, benzene, etc. Systems are normally calibrated for 0-100% LEL (Lower Explosive Limit) using methane as the standard.

The poison resistant sensing element is housed in an explosion-proof 316 stainless steel sensor assembly for maximum corrosion resistance. Use of a sintered metal flame arrestor isolates the sensing elements from ambient air. A 3/4" NPT thread at the back of the sensor mates with the threaded entry on the explosion-proof transmitter enclosure.

Sensing elements are designed for long life in harsh industrial environments, typically two years or more in most applications.

Two matched sensing elements, one active and one passive, form a Wheatstone bridge measuring circuit. The active element catalyzes oxidation of the sensed gas, resulting in a change in the measuring bridge proportional to the gas concentration.

The standard 4/20 mA output may be used with any Manning Systems monitoring device or other types of industry standard monitoring equipment, including direct input to a PLC.

Monitor one to 96 sensors from a single controller

All Manning Systems sensors can be monitored by the GM-1 single channel gas monitor or the GM-10 or GM-4 multi-channel gas safety systems that provide an individual bargraph display of gas concentration for each channel, plus relay outputs for emergency response and ventilation control.

The new AirAlert™ 96d multi-channel gas monitoring system adds addressable RS-485 Modbus communication protocol to the broad line of Manning Systems readout/alarm units. A total of 96 gas sensors and relay modules can be linked to a single controller.

Download brochure or contact Manning Systems for complete specifications.