CO-B4 Carbon Monoxide Sensor 4-Electrode

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CO-B4 Carbon Monoxide Sensor 4-Electrode




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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