OC-904 Portable multi gas detector

2020-6-1      View:
  • Brand   Henan Oceanus
  • Type   OC-904
  • Inquire Now

OC-904 Portable multi gas detector for CO, O2, H2S, Ex

gas detector


OC-904 Portable multi gas detector which is applicable for 4 gas detection of the CO, O2, Ex, H2S, with the original imported sensor, with the safe and reliable quality. It’s with the diffusion sampling mode, can be connected with the external pump. The portable gas detector can promise the security for the personnel working under the toxic gas in the harmful environments.


It used original imported sensor with good quality and high accuracy.
It can be combined with 1~4 different gas sensors for different gas type.
LCD dot matrix display, support both English and Chinese operating menu. 
Adjustable preset two-stage alarm level.
With audible-visual-vibration alarm mode. 
With a back clip, which is easy to carry when working. 
Powered by rechargeable battery with big capacity which support a long working period. 

Technical Specification:

Gas type

Ex, O2, H2S, CO

Sensor Type

Catalytic combustion sensor for Ex;

Electrochemical sensor for O2, H2S and CO.

Sensor life

2~3 years 

Measuring range



H2S: 0~100ppm

CO: 0~500ppm

Display Information

Gas types,Concentration value,Concentration unit, Time,Battery status,Alarm status, etc.


Large screen LCD

Data Storage 

With data storage function with memory capacity of 1000 alarm records.

Sampling mode

Diffusion sampling (Available for connection with external pump)

Operating Language

Chinese or English operating menu is able to be changed freely.

Alarm Mode

Audible-visual-vibration alarm, sound≥75dB

Power Supply

3.7 V, 2000 mAh rechargeable lithium battery, continuous working period can reach to10hoursor above.

Explosion-proof Grade

Ex ib IIB T3 Gb

Protection Grade


Working Environment

Working Temperature: -20℃~50℃

Working Humidity: 0-95%RH (non-condensing)

Body Material

ABS and PC


ABS carrying case




210g (with charger)


2 years

gas detector


The portable multi gas detector used in the gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, metallurgy, mining, fire, environmental protection, etc., where need to inspect the gas concentration of the Combustible gas and Toxic gas.

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