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B4(Low PPB level air quality detection)
  Name:B4(Low PPB level air quality detection)
  Categories:Electrochemical Gas Sensors
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      The B4 series of Alphasense(4-electrode sensors) has the auxiliary electrode to compensate the zero current. Strong signal levels combined with low zero current allows resolution to < 10 (ppb) and a wide operating range. The sensors are suitable for use in fixed installation sensing heads, portable safety instruments, urban/indoor air monitoring and stack gas analysers.

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