OC-905 Portable pump suction Sulfur Dioxide SO2 gas detector

portable SO2 gas detector


OC-905 Portable Sulfur Dioxide gas detector designed with the inner pump and the famous brand sensors, with stable performance and high accuracy. Used to detect the single gas concentration for the SO2 gas. It can directly display the gas concentration data on the screen, the data also could be exported to the computer by USB cable.

For the portable Sulfur Dioxide gas detector, the common applications is 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 SO2 gas concentration.

gas monitor application
gas detector application

Used the original imported sensor, semiconductor technology of ultra low power 32 bit microprocessor, 24 bit ADC acquisition chip, so with the high accuracy.

2.5 inch dot matrix display interface.

All English operation menu and easy operation.

Unit data available for ppm , mg/m3 and %vol.

The circuit installed the four layers of wire, so well anti-interference.

Explosion proof grade is Ex ib IIC T4 Gb.


Inspect the gas concentration and alarm when it reaches preset alarm level.

High accuracy, good stability and good repeatability, long working life.

One-key operation to restore to factory default setting.

Adjustable two-stage audible-visual alarm threshold value.

Powered by rechargeable lithium battery with big capacity.

The built-in pump could be controlled.

Technical Parameter:

Gas typeSulfur Dioxide (SO2)
Measuring range0~20ppm, 2000ppm or Customized.
Working principleElectrochemical sensor
Resolution0.001ppm, 0.01ppm, 1ppm or 1ppb
Precision±≤3%FS or Customized
Zero drift≤±1%(F.S/year)
Sampling modePump-suction sampling (Flow rate of 300ml/minute)
Data storageCan record 300000 group of measuring data
Response timeT90≤20s
Recovery time≤20s
Pre-heating time≤60s
DisplayLCD dot matrix display of the Gas type, gas concentration unit, gas concentration data, time, battery status, data storage status;
Concentration unitppm,mg/m3, %vol
Working environmentWorking temperature: -20℃~60℃Working humidity: 10%-95%RH(non-condensing)Working pressure: 86Kpa ~ 106Kpa
Explosion-Proof gradeEx ib IIC T4 Gb
Protection gradeIP66
Alarm modeAudible, visual
Shell materialMetal
Power supply3.7VDC, 2800mAh,Rechargeable lithium batteryDC5V USB charger
Charge time≤6 hours
Working time≥24 hours
AccessoryBox, instruction, USB charger , data line
Quality standardGB15322.1-2003,GB3836.1-2010,GB3836.2-2010,GB3836.4-2010

If you need any more information about the Sulfur Dioxide gas detector, welcome to contact us:

AuthorAda Bu

As a business woman, I have worked in this field more than 5 years, here I want to share more business knowledge with any partners.

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