Honeywell 705 HT Series of Flammable Gas Sensors

High Temperature Combustible Gas Sensor

The high temperature gas sensor is engineered for the accurate detection of combustible gases in hazardous areas where elevated temperatures are common. Ideal for environments such as turbine enclosures, solvent-based printing presses, and high-temperature drying ovens, this sensor ensures reliable performance in some of the toughest industrial settings. Its robust construction and advanced detection elements make it a dependable solution for facilities requiring continuous gas monitoring at extreme temperatures.

Designed to operate across a broad temperature range from -25°C to +150°C (-13°F to +302°F), this sensor utilizes poison-resistant catalytic bead elements to maintain long-term stability and sensitivity. It supports alarm setpoints as low as 5% LEL and can be configured for gas detection ranges from 0–20% LEL to 0–100% LEL, depending on the controller used. Housed in a UL-approved, explosion-proof enclosure, the sensor provides a standard 3-wire millivolt bridge output, making integration with a control system or signal converter simple and efficient.

Additional Features and Benefits

Excellent Performance

Reliable Operation

Cost Effective

Flexibility

Robust Construction