NO2 - Duct and Rough Service Nitrogen Dioxide Sensor

BAPI’s Nitrogen Dioxide Sensor offers enhanced electrochemical sensing with outstanding accuracy at low concentrations. The Duct unit samples duct air using an aspiration tube. The Rough Service unit features a ventilated BAPI-Box and is ideal for parking ramps, equipment rooms and warehouses.

The sensor has field selectable NO2 ranges of 0 to 2.5, 0 to 5, 0 to 7.5 and 0 to 10 ppm. It also has field selectable outputs of 0 to 5, 1 to 5, 0 to 10 and 2 to 10 VDC as well as a 3-wire 4 to 20 mA output. The LCD is backlight for 10 seconds after a button push.

Two independent SPDT alarm contacts switch at 5 field-selectable NO2 concentrations from 1 to 10 ppm. An alarm timer holds the output relays on for a fixed time after the NO2 level has fallen below 80% of setpoint to allow additional fan time to ensure the NO2 has been purged. The field replaceable sensor element lasts approximately 7 years and is self-tested daily.