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HCN-B1 Hydrogen Cyanide Sensor HCN Sensor Description
Alphasense is expanding its line of electrochemical toxic gas sensors to address industry-specific requirements, including emissions monitoring, process safety, environmental monitoring and VOCs.
Hydrogen Cyanide (HCN)
In manufacturing, the use of Styrene Acrylonitrile (SAN) for food packaging and other consumer products has increased the danger of HCN generated during fires. Alphasense has responded to this issue with HCN sensors with fast response and stable output.
Available in A, B and D series.
| HCN-B1 Hydrogen Cyanide Sensor HCN Sensor PERFORMANCE | ||
| Sensitivity | nA/ppm in 30ppm HCN | 80 to 140 |
| Response time | t90 (s) from zero to 30ppm HCN | <120 |
| Zero current | ppm equivalent in zero air | <±2.5 |
| Resolution | RMS noise (ppm equivalent) | <0.05 |
| Range | ppm HCN limit of performance warranty | 100 |
| Linearity | ppm error at full scale, linear at zero, 40ppm HCN | 0 to 4 |
| Overgas limit | maximum ppm for stable response to gas pulse | 200 |
| HCN-B1 Hydrogen Cyanide Sensor HCN Sensor LIFETIME | ||
| Zero drift | ppm equivalent change/year in lab air | nd |
| Sensitivity drift | % change/year in lab air, monthly test | nd |
| Operating life | months until 80% original signal (12 month warranted) | > 12 |
| HCN-B1 Hydrogen Cyanide Sensor HCN Sensor ENVIRONMENTAL | ||
| Sensitivity @ -20°C | % (output @ -20℃/output @ 20°C) @ 30ppm HCN | 70 to 95 |
| Sensitivity @ 50°C | % (output @ 50℃/output @ 20°C) @ 30ppm HCN | 100 to 115 |
| Zero @ -20°C | ppm equivalent change from 20°C | <0 to -2 |
| Zero @ 50°C | ppm equivalent change from 20°C | <0 to 2 |
| HCN-B1 Hydrogen Cyanide Sensor HCN Sensor CROSS SENSITIVITY | ||
| H2S sensitivity | % measured gas @ 20ppm H2S | <400 |
| NO2 sensitivity | % measured gas @ 10ppm NO2 | <-120 |
| Cl2 sensitivity | % measured gas @ 10ppm Cl2 | <25 |
| NO sensitivity | % measured gas @ 50ppm NO | <1 |
| SO2 sensitivity | % measured gas @ 20ppm SO2 | <3 (transient) |
| CO sensitivity | % measured gas @ 400ppm CO | <0.1 |
| H2 sensitivity | % measured gas @ 400ppm H2 | <0.1 |
| C2H4 sensitivity | % measured gas @ 80ppm C2H4 | <0.1 |
| NH3 sensitivity | % measured gas @ 20ppm NH3 | <2 |
| CO2 sensitivity | % measured gas @ 5% volume CO2 | <0.1 |
| HCN-B1 Hydrogen Cyanide Sensor HCN Sensor 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℃ (stored in original container) | 6 |
| Load resistor | Ω (recommended) | 10 to 33 |
| Bias voltage | V | not required |
| Weight | g | <6 |
Matched Transmitter board for HCN-B1 HCN 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.
4-20mA 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
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