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CO-BF

CO-BF
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CO-BF Carbon Monoxide Sensor Technical Specification Figure 1 CO-BF Schematic Diagram Bottom View Side View PERFORMANCE Sensitivity Response time Zero current Resolution Range Linearity Overgas limit nA/ppm in 400ppm CO t90 (s) from zero to 400ppm CO ppm equivalent in zero air RMS noise (ppm equivalent) ppm limit of performance warranty ppm CO error at full scale, linear at zero, 1000ppm CO maximum ppm for stable response to gas pulse ppm equivalent change/year in lab air % change/year in lab air, monthly test months until 80% original signal (24 month warranted) Zero drift Sensitivity drift Operating life ENVIRONMENTALSensitivity @ -20°C % (output @ -20°C/output @ 20°C) @ 400ppm CO Sensitivity @ 50°C % (output @ 50°C/output @ 20°C) @ 400ppm CO Zero @ -20°C ppm equivalent change from 20°C Zero @ 50°C ppm equivalent change from 20°C CROSS SENSITIVITY Filter capacity Filter capacity Filter capacity Filter capacity H2S sensitivity NO2 sensitivity Cl2 sensitivity NO sensitivity SO2 sensitivity H2 sensitivity C2H4 sensitivity NH3 sensitivity KEY Temperature range SPECIFICATIONS Pressure range Humidity range Storage period Load resistor Weight °C kPa % rh continuous months @ 3 to 20°C (stored in sealed pot) Ω (recommended) g ppm·hrs ppm·hrs ppm·hrs ppm·hrs % measured gas @ 20ppm % measured gas @ 10ppm % measured gas @ 10ppm % measured gas @ 50ppm % measured gas @ 20ppm % measured gas @ 400ppm % measured gas @ 400ppm % measured gas @ 20ppm At the end of the product’s life, do not dispose of any electronic sensor, component or instrument in the domestic waste, but contact the instrument manufacturer, Alphasense or its distributor for disposal instructions. NOTE: all sensors are tested at ambient environmental conditions, with 10 ohm load resistor, unless otherwise stated. As applications of use are outside our control, the information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements. Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UK Telephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: sensors@alphasense.com Website

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CO-BF Performance Data Perf erformance Data Figure 2 Sensitivity Temperature Dependence Figure 2 shows the variation in sensitivity caused by changes in temperature. This data is taken from a typical batch of sensors. The mean and ± 95% confidence intervals are shown. 90 Mean "+95% conf." "-95% conf." Figure 3 Sensitivity Long Term Stability 140 When sensors are tested monthly, their very good stability shows that they can be used in fixed sites, where maintenance and recalibration costs are important. Sensitivity (nA/ppm) Figure 4 shows the response to step changes in CO concentrations...

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