GASTEC CORPORATION - For all types of gas and vapour

Multiple gas detector for Oxygen, Flammable Gases, Hydrogen sulphideGOMH-3A

One unit performs three roles, realizing highly efficient and safe control at the same time.

Can simultaneously measure three gases: oxygen, a flammable gas, and hydrogen sulphide.

  • Simultaneous measurement of oxygen, flammable gases(non-methane), hydrogen sulphide
  • Small / compact and lightweight
  • Low power consumption design
  • With Light & flow rate check function
Multiple gas detector for Oxygen, Flammable Gases, Hydrogen sulphide GOMH-3A


Target gas Oxygen Combustible gas Hydrogen sulphide
Measurement range 0 - 25 % 0 - 100 %LEL 0 - 30 ppm
Measurement principle Galvanic cell method Combustion contact Controlled potential electrolysis
Sampling method Diaphragm pump
Display Digital LCD (backlit)
Indicating accuracy +/- 0.5 % 5 % of full scale
Alarm threshold <18 % >20 %LEL >10 ppm
Alarm signal Short, intermittent sound and blinking alarm light
Operating Temperature -10 - 40 ℃
Power source Four size C dry cell batteries for approx.
4 hours of operation(without alarm signal being emitted)
Dimensions 150(W) x 70(D) x 170(H) mm
Weight 1.2kg

*The products may not be sold depending on countries and regions. 


Easy attachment or removal with one-touch coupler.
Available in lengths of 5m, 10m, 15m, 20m.

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