The Model 175 is designed to monitor the combustibles content of flue gas on a continuous basis. The analyzer is composed of two integrating assemblies mounted within a weatherproof enclosure suitable for bulkhead mounting:
1) electronic control unit which houses the calibration controls, meter readout, alarm relays, and power supply, and

2) temperature-controlled sampling unit consisting of the sensor, flowmeters, valves, and heater circuit.

An adjustable alarm can be set at any value within the full range.