flammable gas detector / gas / explosion-proof / high-temperature
705 HT Series Honeywell analytics



  • Detected entity:

    flammable gas

  • Application:


  • Other characteristics:

    explosion-proof, high-temperature


UL certified, explosion-proof flammable gas detectors with high temperature version certified to 150°C.
Features & Benefits
Fast response speed/low power consumption
Greater than 5 year operating life
High-grade aluminum construction
Quick Specs
Operating temperature range: -25° to +150°C (-13°F to +302°F)
Operating pressure: 75 to 110kPa (750 to 1100mbar)
Range: 0-20% LEL, 0-100% LEL (control card dependent)

The Model 705 high temperature sensor has been specifically designed for the detection of combustible gases in high temperature hazardous area locations. Typical applications include turbine enclosures and drying ovens used in solvent based printing and coating machines.

These applications require a sensor that provides reliable and stable detection allowing low-level alarm settings across a wide temperature range. Utilizing a specially matched pair of Sieger poison resistant combustible gas detection elements, the Model 705 High Temperature Sensor has a very stable baseline allowing alarm trip points to be set as low as 5% LEL across a temperature range of -25°C to +150°C (-3°F to +302°F). The gas measuring range can be configured from 0-20% LEL up to 0-100% LEL depending on the type of controller used.