Portable Gas Detectors

Personal CO/O2 Monitor XOC-2200


For safety check by wearing at construction site and steel mills, safety of site workers.


  • Can be used continuously for 5000 hours.
  • 3 types of Alarm: loud buzzer, alarm lamp and vibration.
  • Available with TWA (Time Weighted Average) concentration display, peak memory, and peak hold function.


Model XOC-2200
Gas Detected Oxygen (O2) Carbon Monoxide (CO)
Detection Principle Galvanic cell Electrochemical cell
Sampling Method Diffusion
Detection Range

(Service Range)

0 to 25 vol%


0 to 300 ppm
Resolution 0.1vol% 0-300ppm: 1ppm
301-2,000ppm: 50ppm
Indication Accuracy*1 Within ±0.5vol% Within±30ppm
Alarm Set Value 1st stage: 19.5vol%
2nd stage: 18.0vol%
1st stage: 50ppm,
2nd stage: 150ppm,
150ppm ・ h (time weighted average)
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, peak value memory, readout of time

weighted average, remainig battery level, alarm functions except gas

alarm (time weighted average, sensor malfunction, battery level,

zero-adjustment malfunction), gas calibration, gas concentration indication

Operation Temperature -10°C to +40°C, 30 to 90 %RH (non-condensing)
Operation Air Pressure Air pressure ±10%
Power Source 1 x AAA alkaline dry cell
Battery Life*3 Up to 5,000 hours (at 20°C with less than 20ppm of CO and more than

20.3vol% of O2)

Dimensions W65 x H64 x D22mm (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 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】, Carbon monoxide【CO】

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