Portable Gas Detectors

Personal H2S/O2 Monitor XOS-2200


  • For safety check before working in underground construction site in the tank, manhole and tunnel etc.
  • For safety of site workers.


  • Can be used continuously for 5000 hours.
  • 3 types of Alarm: loud buzzer, alarm lamp and vibration.
  • Thin, lightweight design.


Model XOS-2200
Gas Detected Oxygen (O2) Hydrogen Sulfide (H2S)
Detection Principle Galvanic cell Electrochemical cell
Sampling Method Diffusion
Detection Range
(Service Range)
0 to 25 vol%
(25 to 50 vol%)
0 to 30.0 ppm
(30.1 to 100 ppm)
Resolution 0.1vol% 0-35.0 ppm: 0.1ppm
35-100ppm: 5ppm
Indication Accuracy*1 Within ±0.5vol%
±1 digit
Within ±1.5ppm
±1 digit
Alarm Set Value 1st stage: 19.5vol%
2nd stage: 18.0vol%
1st stage: 10.0ppm
2nd stage: 15.0ppm
Response Time*2 20s or less 30s or less
Display Mode LCD (Manual backlight)
Alarm Mode Buzzer sounds, flashing red light, vibrator
Approvals Ex ib IIB T3 (TIIS)
Function Remaining battery level, peak hold, memory of peak value, alarm
functions except gas alarm (sensor malfunction, remaining battery
level, air-adjustment malfunction), gas concentration indication
Operation Temperature -10 to +40 °C, 30 to 85 %RH (non-condensing)
Operation Air Pressure Air pressure ±10%
Power Source 1 x AAA alkaline dry cell (LR03)
Battery Life*3 Up to 5,000 hours (at 20°C without alarm)
Dimensions W65 x H64 x D22 mm (excluding protrusions)
Weight Approx. 75g (including batteries)
Standard Accessories 1 x AAA alkaline dry cell, 1 x safety pin adaptor (with fixing screw)

*1 Under identical measuring conditions.

*2 Assuming 90% response and operating at 20 ±2°C.

*3 Battery life may vary with ambient conditions, conditions of use, storage period, battery manufactures, etc.




Type Approved by TIIS Explosion-proof certification

Selectable Gases

oxygen【O2】, hydrogen sulfide【H2S】

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