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Four electrode gas sensor B4 series (low ppb level air quality detection)
The fourth electrode of Alphasense's B4 series electrochemical sensor serves as an auxiliary electrode to compensate for zero point current, giving it
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Four electrode gas sensor B4 series (low ppb level air quality detection) detailed introduction:
AlphasenseofB4The fourth electrode of the series electrochemical sensor serves as an auxiliary electrode to compensate for zero point current, giving it the characteristics of high signal level and low zero point current, with a resolution as low as less than10 ppbIt has obvious advantages such as fast response, short response time, anti-interference, and wide working range, and can be applied to fixed and portable devices in urban areas/Indoor air detection and smoke analysis.
B4Series specification parameters | ||||||
B4series |
H2S-B4 |
CO-B4 |
NO-B4 |
NO2-B43F |
SO2-B4 |
OX-B431 |
Scope of work（ppm） |
0-100 |
0-1000 |
0-20 |
0-20 |
0-100 |
0-20 |
Sensitivity（nA/ppm） |
1450~2050 |
420~650 |
600~1200 |
-175~ -450 |
275~475 |
-225~ -523 |
Resolution（ppb） |
1 |
4 |
5 |
15 |
5 |
15 |
Reaction time（t90） |
<55 |
<25 |
<45 |
<60 |
<40 |
<45 |
Overload（ppm） |
200 |
2000 |
50 |
50 |
200 |
50 |
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