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Low Hydrogen Cross Sensitivity Carbon Monoxide Sensor CO Sensor - CO-BX

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• Range: 2,000 ppm limit of performance warranty
• Sensitivity: 70 to 130nA/ppm in 400ppm CO
• Response time t90: < 25s from zero to 400ppm CO
• Resolution: < 0.5 RMS noise (ppm equivalent)
• 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)
• Weight: < 13 g

Model Number: CO-BX
Data Sheet:

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Product Specification

CO-BX Carbon Monoxide Sensor CO Sensor Description

Alphasense Carbon Monoxide gas sensors operate using proven fuel cell technology.

CO-BX Carbon Monoxide Sensor size:
32mm diameter package, the best choice for fixed site applications

The Alphasense family of CO sensors have proven themselves in the field with long term stability and reliable operation, well beyond the two-year warranty, using our patented electrode technology. The ‘X’ sensors have low hydrogen sensitivity, as drop-in replacements for the standard ‘F’ sensors.

CO-BX Carbon Monoxide Sensor CO Sensor PERFORMANCE
Sensitivity	nA/ppm in 400ppm CO	70 to 130
Response time	t90 (s) from zero to 400ppm CO	< 25
Zero current	ppm equivalent in zero air	< ± 3
Resolution	RMS noise (ppm equivalent)	< 0.5
Range	ppm limit of performance warranty	2,000
Linearity	ppm CO error at full scale, linear at zero, 1000ppm CO	< ± 20
Overgas limit	maximum ppm for stable response to gas pulse	5,000

CO-BX Carbon Monoxide Sensor CO Sensor LIFETIME
Zero drift	ppm equivalent change/year in lab air	< 0.2
Sensitivity drift	% change/year in lab air, monthly test	< 3
Operating life	months until 80% original signal (24 month warranted)	> 24

CO-BX Carbon Monoxide Sensor CO Sensor ENVIRONMENTAL
Sensitivity @ -20℃	% (output @ -20℃/output @ 20℃) @ 400ppm CO	40 to 60
Sensitivity @ 0℃	% (output @ 0℃/output @ 20℃) @ 400ppm CO	65 to 85
Sensitivity @ 50℃	% (output @ 50℃/output @ 20℃) @ 400ppm CO	110 to 130
Zero @ -20℃	ppm equivalent change from20℃	< 0 to 4
Zero @ 0℃	ppm equivalent change from 20℃	< 0 to 3
Zero @ 50℃	ppm equivalent change from 20℃	< 0 to -6

CO-BX Carbon Monoxide Sensor CO Sensor CROSS SENSITIVITY
Filter capacity	ppm·hrs H2S	160,000
Filter capacity	ppm·hrs NO2	120,000
Filter capacity	ppm·hrs NO	120,000
Filter capacity	ppm·hrs SO2	160,000
H2S sensitivity	% measured gas @ 20ppm H2S	< 0.1
NO2 sensitivity	% measured gas @ 10ppm NO2	< 1
Cl2 sensitivity	% measured gas @ 10ppm Cl2	< 0.1
NO sensitivity	% measured gas @ 50ppm NO	< 25
SO2 sensitivity	% measured gas @ 20ppm SO2	< 0.1
H2 sensitivity	% measured gas @ 400ppm H2 at 20℃	< 5
C2H4 sensitivity	% measured gas @ 400ppm C2H4	< 10
NH3 sensitivity	% measured gas @ 20ppm NH3	< 0.1

CO-BX Carbon Monoxide Sensor CO Sensor 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 (recommended)	10 to 47
Weight	g	< 13

Matched Transmitter board for CO-BX CO Sensor

4-20mA Analogue Transmitter Board
• Factory calibration, custom-set for immediate use
• Wide operating voltage range
• Low RFI susceptibility
Alphasense 4-20 mA analogue transmitter boards provide a cost effective way for Original Equipment Manufacturers to engineer transmitter heads for fixed installation systems.

4-20 mA Digital Transmitter Board
• Factory calibration, custom-set for immediate use
• Digital zero, sensitivity and temperature compensation
• Digital and 4-20mA output
• Biased or unbiased operation
• Calibration and range change