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Product Enquiry
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Further information about the TunnelCraft
III NO2 can be found using the options
below |
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Nitrogen dioxide (NO2) is
fast becoming the most important
measurement in tunnels and will
eventually replace nitric oxide (NO) as the key
measurement. The TunnelCraft III NO2 Air
Quality Monitor (AQM) uses a high-power
blue LED to measure the attenuation of
UV/blue light by NO2 in the tunnel
atmosphere.
The AQM consists of a transceiver that
projects the light beam to a reflector
within a stainless steel tube mounted 1m
away. Sintered filters in the
measurement chamber allow gases from the
tunnel atmosphere to diffuse into the
chamber while inhibiting the passage of
particulates.The
NO2 sensor can be used as a stand-alone
instrument or as part of a multi-point
monitoring system. |
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· High
accuracy and stability |
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Zero
maintenance |
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Simple
operation – no moving components |
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Output in
ppb (parts per billion) |
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High
reliability |
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Span
verification by span gas injection |
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Fully configurable current and relay
outputs |
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RS232 or RS485 - Modbus output optional |
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TunnelCraft
III NO2
monitor |
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