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| | | PATENTED | | |
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| | | Figure 1 | | |
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| | | All dimensions in millimetres (± 0.1mm) Bottom View | | |
| | | Top View | | | Side View | | |
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| | | PERFORMANCE Sensitivity Response time Zero current Resolution Range Linearity Overgas range | | nA/ppm in 10ppm Cl2 | | -400 to -750 | | |
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| | | t9o (s) from zero to 10ppm Cl2 (33w load resistor) < 40 ppm equivalent in zero air ± 0.2 RMS noise (ppm equivalent) (33w load resistor) < 0.02 ppm limit of performance warranty 20 ppm error at full scale, linear at zero and 5ppm Cl2 ± 1.5 maximum ppm for stable response to gas pulse 50 | | |
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| | | LIFETIME Zero drift ppm equivalent change/year in lab air, monthly test < 0.2 Sensitivity drift % change/month in lab air, twice monthly test < 4 Operating life months until 80% original signal (24 month warranted) > 24 | | |
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| | | ENVIRONMENTAL Sensitivity @ -20C% (output @ -20C/output @ 20C) @ 10ppm Cl 2 80 to 95 Sensitivity @ 50C % (output @ 50C/output @ 20C) @ 10ppm Cl 2 75 to 87 Zero @ -20C ppm equivalent change from 20C < ± 0.2 Zero @ 50C ppm equivalent change from 20C < 0 to -0.4 | | |
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| | | CROSS SENSITIVITY | | |
| | | NO2 sensitivity NO sensitivity SO2 sensitivity H2 sensitivity H2S sensitivity CO sensitivity C2H4 sensitivity | | % measured % measured % measured % measured % measured % measured % measured | | gas @ 10ppm NO2 gas @ 50ppm NO gas @ 20ppm SO2 gas @ 400ppm H2 gas @ 20ppm H2S gas @ 400ppm CO gas @ 400ppm C2H4 | | 100 < 0.5 < -2.5 < 0.1 < -40 < 0.1 < 0.1 | | |
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| | | KEY | | Temperature range °C | | -20 to 50 80 to 120 15 to 90 6 33 < 6 | | |
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| | | SPECIFICATIONS Pressure range Humidity range Storage period Load resistor Weight | | kPa % rh continuous months @ 3 to 20C (stored in sealed pot) w (for optimum performance) g | | |
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| | | 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. | | |
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| | | 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: www.alphasense.com | | |
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