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Carbon Monoxide & Hydrogen Sulfide COSH Replacement Sensor for MultiRae / ToxiRae Pro

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SKU C03-0913-000 Categories , Tag



Genuine Carbon Monoxide & Hydrogen Sulfide COSH Replacement Sensor for MultiRae / ToxiRae Pro gas detectors from Rae Systems by Honeywell.

All specifications have been verified under the following environmental conditions:

  • Temperature: 68°F
  • Relative Humidity (non-condensing): 50%
  • Ambient Pressure: 1 atm (1,013 mbar)

Refer to the Technical Note TN-114 for a glossary of terms used on this page

Additional information

Weight .5 lbs


Sensor Type Electrochemical
Range CO: 0-500ppm
H2S: 0-200 ppm
Resolution CO: 1 ppm
H2S: 0.5 ppm
Bias/Equilibration No bias/10 minutes after installation
Drift < 1% signal loss/month
Storage Life 6 months in sealed container
Operating Life 1 year in air
Calibration Gas 50 ppm Carbon Monoxide in Air, 10 ppm Hydrogen Sulfide in Air
Maximum Overload CO: 0-1,500 ppm
H2S: 0-500 ppm
Temperature Range -4°F to 122°F
Storage Temperature Range 32°F to 68°F
Pressure Range Atmospheric ±10%
Operating Humidity 15 to 90% rH non-condensing
Warranty 1 year from date of shipment

Cross Sensitivities

Response H2S/CO
1 ppm
0 ppm/0 ppm
Carbon Monoxide 300 ppm <6 ppm/300 ppm
100 ppm
0.03 ppm/20 ppm
Hydrogen Sulfide
15 ppm
15 ppm/0 to 6 ppm
Nitric Oxide
35 ppm
1.0 ppm/0.1 ppm
Nitrogen Dioxide 5 ppm -1 ppm1/0.1 ppm
Sulfur Dioxide
5 ppm
1 ppm/0 ppm

1 – CAUTION! Negative cross sensitivities may cause the sensor to produce lower readings than the true concentration of gas in ambient air


Technical Note: TN-114 – Sensor Specifications and Cross Sensitivities for Carbon Monoxide & Hydrogen Sulfide COSH Replacement Sensor Replacement Sensor

Disclaimer: Technical Note TN-114 presents specifications, cross sensitivities and calibration information on select Rae Systems by Honeywell sensors. All specifications presented in this Technical Note reflect the performance of standalone sensors. For instrument specifications, please refer to product datasheets and manuals. Actual sensor characteristics may differ when the sensor is installed in different instruments. As sensor performance may change over time, specifications provided are for brand new sensors.

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