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In Duct / In Unit Mount Self calibrating CO2 Transmitter



  • Commercial buildings
  • Schools & universities
  • Retail
  • Theaters, auditoriums, gyms, churches
  • Hospitality venues

Key Features

  • Built in self calibration feature results in zero maintenance over sensor rated life (15 years)
  • Background calibration feature also automatically considers outside concentrations without an outside sensor (see “Background On Sensor Self Calibation” to left)
  • Utilizes patented gold plated optical sensing element with 4.7 inch extendedmeasurement path length for maximum stability & resolution. (see “Length Matters” to left)
  • ISO-9001 manufactured for quality
  • Now also available with LonWorks® communication capability as a LonMark® Certified product.
  • Now BACnet® Communicating
Model TR9290 Family CO2 Transmitter
  • Measures: 0-2,000 ppm CO2, Factory adjustable to 10,000 ppm
  • Accuracy: ± 30 ppm + 3% of reading
  • Power: 24 VAC
  • CO2 output: 0-10 V, 0-5 V, 4-20mA
  • Maintenance free for 15 years or more
  • Also available as a LonMark Certified Product for TR9292, TR9293 and TR9294 models
  • Now BACnet® Communicating


BACnet Application Guide
BACnet Application Guide