CN50 CO/NO2 Monitor for Fan Ventilation Control

Conspec’s CN50 Series is an economical choice for tCO/NO2,Oxygen gas monitoring. The CN50 Series is a simple and “smart” gas detector. An industry standard 4-20mA Analogoutput signal can be connected to any existing PLC, DCS, EMS, or Datalogger system. A simplified calibration procedure allows for a quick, non-intrusive, adjustment free calibration. The first alarm initiates fans/louvers and second alarm sounds onboard horn. It can be customized.

Installation time and costs are significantly reduced because all transmitters are shipped factory preprogrammed, calibrated, and tested on day of shipment. Installation cost can also be significantly reduced because the units can be connected on a single 4-conductor cable via RS-485 instead of having to route individual cables to each unit.


Enclosure Type NEMA 4X Optional Power
Power Input 12-24VDC Audible Alarm
Dimensions 10" x 8" x 5" Operating Temp -4°F to 120°F (-20°C to 50°C)
Display Two Line, 8 Character Alphanumeric LCD Display Fuse
Response Time Sensors Electrochemical


  • Lower Cost of Ownership
  • Industry Standard Output Signal
  • No Programming or “Burn-In Time” Required
  • Gas Specific Sensors equal No False Alarms
  • Maintenance Free Operation
  • Adjustment Free, One Person Calibration Procedure
  • Reliable & Stabile Operation
  • On-Board Audio Alarm
  • Two Clear & Back-lit LCD Display
  • Long Sensor Life
  • Automatic Reset After Power Loss or Interruption
  • Temperature & Humidity Compensated
  • High Immunity to RFI & EMI
  • One Year Limited Warranty


  • Automotive Facilities
  • Fire Stations
  • Bus Garages
  • Municipal Truck Storage Buildings
  • Loading Docks
  • Truck Service Bays
  • Factories & Warehouses
  • Ice Rinks

Options and Replacement Parts

P2069 NO Sensor Assembly CX0352-03 0-500PPM CO Sensor
P2580-8 Dust and Water Protection Adapters P1907 SPDT Relay Contacts
P1879 Calibration Kits  


CN50 - CO/NO2 Monitor for Fan Ventilation Control

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