RFQ

Honeywell 705 Combustible Gas Sensor

  • NG # 03124-HW-HONEYWELL-372

  • MF # 2430K0001

CSA and UL-certified, explosion-proof flammable gas detectors for locations with temperatures up to 176°F.

Manufactured By :
Honeywell
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Overview

The Honeywell 705 Combustible Gas Sensor is an explosion-proof assembly, fitted with poison-resistant combustible gas detection elements. Fully encapsulated, it is designed for use in hazardous locations. The Sensor is electro-catalytic and consists of 2 beads of refractory oxide, formed on a fine platinum wire coil. The active bead is coated with a catalyst material, while the reference bead is glass-coated.

In the presence of gas, the catalyst-coated bead promotes the oxidation of the gas, causing it to heat up and increase in electrical resistance. This change of resistance, relative to the reference bead, can be measured and is in direct proportion to the concentration of combustible gas.

Specification

  • Range depends on the control card
    • 0 to 20% or 100% LEL
  • Alarm trip points as low as 5% LEL
  • mV bridge output signal
  • Linearity better than ±5% fsd
  • Repeatability better than ±2% LEL
  • Poison resistant detectors
  • Fast speed of response
  • 5-year warranty
  • Certified for hazardous location operation
    • Class 1, Div 1, groups B, C and D

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