GASTEC CORPORATION - For all types of gas and vapour

Hand-held oxygen detectorGOA-40D-5

Oxygen detector

GASTEC's Oxygen detector can quickly and accurately measure oxygen concentrations at a variety of different work sites subject to host of complicated and varying factors.
All come with a high performance galvanic cel sensor.

  • Calibrates to oxygen level of 21% with one-touch
  • Large easy-to-read display
  • Low power consumption
  • Sensor cable holder
Hand-held oxygen detector GOA-40D-5
*The products may not be sold depending on countries and regions. 


Measurement range 0.0 - 25.0% (also measures 25.1 - 42.0% for extra range)
Measurement principle Galvanic cell
Sampling method Diffusion
Display Digital LCD (backlit)
Indicating accuracy +/- 0.5 %O2 ( 0.0 - 25.0 %O2) +/- 3.0 %O2 ( 25.0 - 42.0 %O2)
Alarm threshold <18%
Alarm signal intermittent sound and blinking light
Explosion proof Certified by Japan Ministry of Health, Labour and Welfare (Class ia2G3 Certification No.T65119)
Operating Temperature / Humidity range Temperature : -10 - 40 ℃

Relative humidity : 30 - 95 %RH
Power source Four size C manganese batteries provide about 4000 hours of operation (without alarm signal being emitted/25ºC
Dimensions 153(W) x 71(D) x 133(H) mm
Weight 1.4kg


allows for vertical and horizontal remote measurement up to 2.84m.

Recommended sensor

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