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| | | NO2-B1 Performance Data | | |
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| | | Figure 2 Sensitivity Temperature Dependence -449- | | |
| | | 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. | | |
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| | | 9 19 29 Temperature (oC) | | |
| | | -39 | | -29 | | -19 | | | 39 | | 49 | | 59 | | |
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| | | Figure 3 Effect of Load Resistor Value on Noise | | |
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| | | | | | | | | | | \ | | | | | | | -♦—Mean "+95 % Conf." » "-95 % Conf." | | | | | | | | | | -—• | | | | | | | | | | | | | | |
| | | | Figure 3 shows the effect of load resistor value on the RMS zero noise for the NO2-B1 sensor. The t90 response time increases linearly with increasing load resistor value. If a fast response is required then a 10 Q load resistor should be employed; this will give a 20 second response. | | |
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| | | cd o o i_ CD N w | | |
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| | | 9 | | 19 29 39 49 59 69 79 Load Resistor (Q) | | |
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| | | Figure 4 NO2-B1 Response to 1ppm NO2 | | |
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| | | When designed with a 22 ohm load resistor, the NO2-B1 shows excellent resolution, even at the ppb level: ideal for outdoor air environmental testing. | | |
| | | 299 | | |
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| | | ,¿,1,»! | | |
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| | | 699 | | | 1599 | | |
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| | | -299 -499 | | |
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| | | -699 | | |
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| | | -899 | | |
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| | | -1999 | | |
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| | | -1299 | | |
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| | | Time (seconds) | | |
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| | | For further information on the performance of this sensor, on other sensors in the range or any other subject, please contact Alphasense Ltd. For Application Notes visit "www.alphasense.com". | | |
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| | | In the interest of continued product improvement, we reserve the right to change design features and specifications without prior notification. The data contained in this document is for guidance only. Alphasense Ltd accepts no liability for any consequential losses, injury or damage resulting from the use of this document or the information contained within it. ( ©ALPHASENSE LTD ) Doc. Ref. TDS/NO2B1/Issue 14 | | |
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