CO-B4 Carbon Monoxide Sensor 4-Electrode - CO-B4

Temperature range :-30 to 50 ℃
Pressure range :80 to 120 kPa
Humidity range :15 to 90 % rh continuous
Storage period :6 months @ 3 to 20℃ (stored in sealed pot)
Load resistor : 33 to 100 Ω (ISB circuit is recommended)
Weight :< 13 g

  • Model Number: CO-B4
  • Data Sheet: Date Sheet File
Quantity:
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  • CO-B4 Carbon Monoxide Sensor 4-Electrode
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Product Specification

CO-B4 Carbon Monoxide Sensor 4-Electrode


PERFORMANCE
Sensitivity         nA/ppm at 2ppm CO                                          420 to 650
Response time       t90 (s) from zero to 10ppm CO                              < 25
Zero current        nA in zero air at 20℃                                     +30 to -130
Noise*              ±2 standard deviations (ppb equivalent)                   4
Range               ppm limit of performance warranty                          1000
Linearity           ppb CO error at full scale, linear at zero, 500ppm CO      20 to 35
Overgas limit       maximum ppm for stable response to gas pulse               2000
* Tested with Alphasense ISB low noise circuit


LIFETIME
Zero drift          ppb equivalent change/year in lab air                       < ±100
Sensitivity drift   % change/year in lab air, monthly test                      < 10
Operating           life months until 50% original signal (24 month warranted)  > 36


ENVIRONMENTAL
Sensitivity @ -20℃ (% output @ -20℃/output @ 20℃) @ 5ppm CO                  40 to 70
Sensitivity @ 50℃  (% output @ 50℃/output @ 20℃) @ 5ppm CO                   110 to 125
Zero @ -20℃        nA                                                          -30 to +30
Zero @ 50℃         nA                                                          -50 to -200


CROSS SENSITIVITY
Filter capacity     ppm·hrs H2S                                                250,000
H2S                 sensitivity % measured gas @ 5ppm H2S                       < 1
NO2                 sensitivity % measured gas @ 5ppm NO2                       < 1
Cl2                 sensitivity % measured gas @ 5ppm Cl2                       < 1
NO                  sensitivity % measured gas @ 5ppm NO                        < -3
SO2                 sensitivity % measured gas @ 5ppm SO2                       < 0.1
H2                  sensitivity % measured gas @ 100ppm H2  at 20 ℃            < 10
C2H4                sensitivity % measured gas @ 100ppm C2H4                    < 1
NH3                 sensitivity % measured gas @ 20ppm NH3                      < 0.1


KEY SPECIFICATIONS
Temperature range   ℃                                                          -30 to 50
Pressure range      kPa                                                         80 to 120
Humidity range      % rh continuous                                             15 to 90
Storage period      months @ 3 to 20℃ (stored in sealed pot)                   6
Load resistor       Ω (ISB circuit is recommended)                             33 to 100
Weight              g                                                           < 13

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