Gas Monitor
Total Analytical Solution 
D-2-4, Setia Walk, Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia
Tel: + 6012-921 3877; 603-5879 7121
Fax: +018 635 1593
   Home      Honeywell- 705 HT Series of Flammable Gas Sensor
705 HT Series of Flammable Gas Sensors

Industrial Flame and Gas Systems

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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)

Product Overview

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. 

The detector elements are housed in a UL hazardous area approved explosion proof assembly, and provide an industry standard 3 wire mV bridge output which can be connected to a suitable control device or converted to an analog output signal via a field transmitter.

Additional Features and Benefits:

Excellent Performance
•  Certified for hazardous location operation  up to +150°C (+302°F)
•  Alarm trip points as low as 5% LEL
•  Fast speed of response
•  Poison resistant detectors
•  Low power consumption

Cost Effective

•  Low cost disposable sensor
•  Greater than 5 year typical operating life

Reliable Operation

•  Specially matched ‘Sieger’ detectors provide highest stability
•  Proven technology from the World leader in combustible gas detection


•  Measuring ranges from 0-20% LEL to 0-100% LEL
•  Wide range of accessories

Robust Construction
•  UL approved explosion proof enclosure
•  High grade Aluminum construction.

D-2-4, Setia Walk, Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia

Tel: + 6012-921 3877; 603-5879 7121
Fax: +018 635 1593