| Customization: | Available |
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| Type: | Electrochemical Gas Sensor |
| Conductivity Type: | Surface Type |
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CO-B4 Carbon Monoxide Sensor (CO Sensor) 4-Electrode Description
Alphasense Carbon Monoxide gas sensors operate using proven fuel cell technology.
Sensors are available in the following sizes:
A: 20mm diameter, the industry standard size for portable gas detectors
B: 32mm diameter package, the best choice for fixed site applications
C: 20mm diameter with extra height for additional filter material when measuring combustion gases
D: miniature, with proven long-term performance. Sensors for the next generation of portable gas detectors
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-B4 Carbon Monoxide Sensor (CO 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 20ºC | +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 | ||
| CO-B4 Carbon Monoxide Sensor (CO Sensor) 4-Electrode 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 |
| CO-B4 Carbon Monoxide Sensor (CO Sensor) 4-Electrode ENVIRONMENTAL | ||
| Sensitivity @ -20ºC | (% output @ -20ºC/output @ 20ºC) @ 5ppm CO | 40 to 70 |
| Sensitivity @ 50ºC | (% output @ 50ºC/output @ 20ºC) @ 5ppm CO | 110 to 125 |
| Zero @ -20ºC | nA | -30 to +30 |
| Zero @ 50ºC | nA | -50 to -200 |
| CO-B4 Carbon Monoxide Sensor (CO Sensor) 4-Electrode 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 ºC | < 10 |
| C2H4 | sensitivity % measured gas @ 100ppm C2H4 | < 1 |
| NH3 | sensitivity % measured gas @ 20ppm NH3 | < 0.1 |
| CO-B4 Carbon Monoxide Sensor (CO Sensor) 4-Electrode KEY SPECIFICATIONS | ||
| Temperature range | °C | -30 to 50 |
| Pressure range | kPa | 80 to 120 |
| Humidity range | % rh continuous | 15 to 90 |
| Storage period | months @ 3 to 20°C (stored in sealed pot) | 6 |
| Load resistor | Ω (ISB circuit is recommended) | 33 to 100 |
| Weight | g | < 13 |
Matched Transmitter board for CO-B4 CO Sensor
Individual Sensor Board (ISB) Alphasense B4 4-Electrode Gas Sensors
Beijing Zetron Technology Co., Ltd, formerly Beijing Senre Technology Co., Ltd was founded in 2006, located in Beijing with convenient transportation access. We have almost 16 years experience in the retail, import and export of gas detection and monitoring equipment.
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