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CO sensor

Carbon monoxide

Reliable real-time
data on CO

GasPlug TECHNOLOGY | PATENTED DESIGN

Carbon-monoxide
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Where is it found?

CO is found in fumes produced any time fuel burns in cars or trucks, small engines, stoves, lanterns, grills, fireplaces, gas ranges, or furnaces.

Improperly ventilated appliances and engines, particularly in a tightly sealed or enclosed space, may allow carbon monoxide to accumulate until dangerous levels.

Why is it harmful?

Carbon monoxide or CO is an odourless and colorless pollutant gas that can cause death.

When CO is inhaled into the body, it mixes with the blood avoiding the oxygen absorption.

The CO exposure of a person over a certain period of time can cause illness and even death.

The carbon monoxide cartridge has a built-in electrochemical sensor with very low noise electronics allowing the measurement from very low concentrations (ppb) up to several ppm.

There are two measurement ranges to cover different applications:

  • Type A measuring most common concentrations range to 12,000 ppb.
  • Type B, a higher range version that can measure up to 500 ppm, with reduced accuracy at low concentrations.

This cartridge is very stable over time and, in non-extreme environments, can last several months longer than specified.

Technical specifications

Type
Electrochemical
Unit of measurement
µg/m3, ppb(A)
mg/m3, ppm(B)
Measurement range(1)
0 - 12,000 ppb(A)
0 - 500 ppm(B)
Resolution(2)
1 ppb(A)
0.01 ppm(B)
Operating temperature range(3)
-30 to 50 ºC
Operating RH range(4)
0 to 99 %RH
Recommended RH range(4)
15 to 90 %RH
Operating life(5)
> 24 months
Guarantee range(6)
1,000 ppm
Limit of Detection (LOD)(7)
10 ppb(A)
0.02 ppm(B)
Repeatability(8)
20 ppb(A)
0.05 ppm(B)
Response time(9)
< 30 sec(A)
< 180 sec(B)
Typical accuracy(11) (12)
± 80 ppb(A)
± 0.1 ppm(B)
Typical precision R2 (10)
> 0.85
Typical slope(10)
0.78 - 1.29
Typical intercept (a)(10)
-50 ppb ≤ a ≤ +50 ppb(A)
-0.1 ppm ≤ a ≤ +0.1 ppm(B)(B)
DQO - Typical U(exp)(13)
< 20%
Typical Intra-model variability(14)
< 3 ppb(A)
< 0.05 ppm(B)
  1. Measurement range: concentration range measured by the sensor.
  2. Resolution: the smallest unit of measurement that can be indicated by the sensor.
  3. Operating temperature range: temperature interval at which the sensor is rated to operate safely and provide measurements.
  4. Operating RH range (Recommended RH range): humidity interval at which the sensor is rated to operate safely and provide measurements.
  5. Operating life: lifetime of the sensor at normal conditions.
  6. Guarantee range: limit covered by the guarantee.
  7. LOD (Limit Of Detection): measured at laboratory conditions at 20ºC and 50% RH. The limit of detection is the minimum concentration that can be detected as significantly different at zero gas concentration, based on the metric from the Technical Specification CEN/TS 17660-1:2022.
  8. Repeatability (measured at laboratory conditions at 20ºC and 50% RH): closeness of the agreement between the results of successive measurements of the same measure carried out under the same conditions of measurement, based on the metric from the Technical Specification CEN/TS 17660-1:2022.
  9. Response time: time needed by the sensor to reach 90% of the final stable value.
  10. Statistical metric: statistics obtained between the device hourly measurements and reference instruments for 1 to 8 months field test between -10 to +30ºC in different countries. (*) The expected error for PM10 is higher in the presence of coarse particles.
  11. Mean Absolute Error: it is the average mean absolute error (MAE) obtained between the device hourly measurements and reference instruments for 1 to 8 months of field test between -10 to +30ºC in different countries.
  12. Error: it is the error of the sensor at reading measurement or full scale.
  13. DQO-Typical U(exp): Data Quality Objective expressed as the Expanded Uncertainty in the Limit Value obtained between hourly measurements of the device and the reference instruments for 1 to 8 months field test between -10 to +30ºC in different countries, based on the metric from the European Air Quality Directive 2008/50/EC and from the Technical Specification CEN/TS 17660-1:2022. (*) The expected error for PM10 is higher in the presence of coarse particles.
  14. Typical intra-model variability: calculated as the standard deviation of the three sensor means in 1 to 8 months field test between -10 to +30ºC in different countries.

It is essential to have an instrument that is capable of accurately measuring pollution levels and providing reliable results to make informed decisions on air quality and public health.

Javier Fernández

CEO & Co-founder - Kunak