• Target gas O2/CO/H2S/SO2
  • Detection principle: Galvanic cell type(O2)
  • Electrochemical type:(other)
  • Sampling method: Diffusion
  • Type of alarm: Gas alarm, Trouble alarm
  • Display of alarm: Flashing light, buzzer, vibration
  • Explosion-proof design that is intrinsically safe
  • Ingress-proof rating of IP66/67(currently under testing)
  • Approvals: IECEx, ATEX, Japan Ex
  • Power source: AAA alkaline or Ni-MH (eneloop) batteries(×2)
  • Dimensions & Weight Approx. 54(W) x 67(H) x 24(D)mm(excluding projections)
  • Approx. 93g


O4 Single Gas Detectors | Portable Gas Detector Sensor | OX-04G

The 04 model is a portable single gas detector that boasts a robust design with new advanced R sensors that deliver accurate readings.

With a continuous operating time of approximately 9,000 hours, the new O4 series is designed to function long-term under hazardous conditions. The sensors’ durability and performance are backed by a three-year warranty* (one-year sensor warranty for OX-04G).

Besides O2 gas detection, the 04 series also offers CO sensors that are almost entirely resistant to hydrogen interference. This makes it ideal for use in environments like steel facilities where hydrogen is present.


The 04 single gas detector can be used for:
  • O2 & H2S monitoring while working in confined spaces
  • CO monitoring in steel plants
  • H2S monitoring in refineries, oil fields and petrochemical plants


To learn more about the 04 single gas detector, click here for our catalog