CO2 & Temperature

Series HD37..

The HD37BT… and HD37VBT... series transmitters are mainly employed in air quality control through CO2 (Carbon Dioxide) measurement in ventilation systems.
See PDF for complete details on all models

HD377 MODELS OUTPUT TYPES APPLICATION pdf
  4 …20 mA 0 …10V DC CO2 Temperature
HD37BT... x - x -
HD37VBT... - x x -
HD377BT... x - x x
HD37V7BT... - x x x