TQ122 - 2 Wire - Oxygen Depletion Detector

0-25% Oxygen ATEX approved, 2-wire, 24V DC 4-20mA loop powered.


Robust stainless steel housing designed for hostile environments such as offshore and petrochemical works features high thermal mass, providing exceptional zero stability.

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The TQ122 series is a range of flameproof (Exdb) toxic gas and oxygen deficiency sensors for use in zone 1 and zone 2 hazardous areas. The TQ122 sensors are configured as 2-wire 4-20mA transducers for interface with the TQ4000 or TQ8000 control panel series or third party control systems.



  • Weight: 580g
  • Height: 50mm
  • Length: 50mm

Power Requirements

  • Input Voltage: 24V DC
  • Power Consumption: 250mA
  • Max Switching Current: 2A
  • Power Input: 4-20mA

Time Info

  • Life Expectancy: 2-3 years
  • Warranty: 12 Months
  • Rating: IP55
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