Thermal conductivity gas analyzer
Honeywell Process Solutions

Honeywell's 7866 Thermal Conductivity Analyzer is designed to provide a highly sensitive and accurate analysis of a binary (two-component) mixture of gases. The analyzer can also be calibrated to measure a single component of a multi-component gas mixture, providing the background gases that constitute a stable mixture (such as air) or have approximately the same thermal conductivity.

The 7866 Analyzer uses the principles of thermal conductivity to determine the concentration of a sample gas through the measurement of thermal losses from two highly stable, matched thermistor probes inserted in a stainless steel block.

The 7866 Analyzer consists of three basic components: the sensing unit (transmitter), the control unit (receiver) and a power supply. The sensing unit receives a continuous flow of the binary or multi-component gas mixture, measures the concentration of the sample gas and transmits an electrical signal to the control unit. The sensing unit is ruggedly constructed to meet most environmental conditions and is designed to be mounted up to 1,000 feet from the control unit with only a single multi-conductor non-shielded cable connecting the two, resulting in greater flexibility and lower installation costs.