MSA Zgard-S NO2-EC-420, Nitrogen Dioxide Sensor/Transmitter

Description

Part of a project to liquidate all the various salesman demo units from a local Minnesota manufacturer's rep.  A friend of mine owned this process control business for a long time until his sale of the business last year.  He has since asked my business, Lakeside Liquidators, to sell all of the demo units for the new owner.
Since this was a demo unit, the new owner can not market it due to his distributor arrangements with the manufacturers.
This meter
:
-Purchase date: 2008.
-Pictures are of exact unit.
Since sensors expire over time, it is assume the sensor will need to be replaced for correct operation.  Consult an expert for details.
Brand: MSA
Model: Zgard-S NO2 Sensor
Serial #: 143727-40
Range: 0-10 ppm NO2
Output: 4-20mA
Power: 24 VAC/DC @ 100mA