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Home > Carbon Dioxide (CO2) > CO2 Value Duct

CO2 Value Duct

  • 2000 ppm CO2
  • Field replaceable NDIR element
  • Dual 3-wire 4-20mA and 0-5/0-10V outputs (selectable)


  • Controlling ventilation in response to occupancy
  • Facilitating compliance with ASHRAE 62.1 standard for air quality
  • Offices, conference rooms, and public assembly areas


Senva CO2 sensors maximize energy savings by ensuring optimal ventilation. Measuring exhaled CO2 levels ensures air is conditioned only when needed. The CO2D-VAL series is a duct mount sensor with a field replaceable NDIR sensing element and features that include auto-calibration and optional thermistor for temperature readings.

Product     Price   Quantity
CO2D-VAL-A Duct CO2 Transmitter   $ 435.00
CO2D-VAL-C Duct CO2 Transmitter w/ 100pt Rtd   $ 465.00
CO2D-VAL-D Duct CO2 Transmitter w/ 1000pt Rtd Temp   $ 465.00
CO2D-VAL-E Duct CO2 Transmitter w/ 10k t2 Temp   $ 465.00
CO2D-VAL-F Duct CO2 Transmitter w/ 10k t3 Temp   $ 465.00
CO2D-VAL-G Duct CO2 Transmitter w/ 10k t3 Temp 11k Shunt   $ 465.00
CO2D-VAL-H Duct CO2 Transmitter w/ 3k Temp   $ 465.00
CO2D-VAL-I Duct CO2 Transmitter w/ 2k2 Temp   $ 465.00
CO2D-VAL-J Duct CO2 Transmitter w/ 1k8 Temp   $ 465.00
CO2D-VAL-K Duct CO2 Transmitter w/ 20k Temp   $ 465.00
CO2D-VAL-L Duct CO2 Transmitter w/ 100k Temp   $ 465.00


List prices shown; trade pricing appears on orderpad for Senva Trade Accounts.
For qualified trade pricing, please contact us at 866-660-8864.
Oregon has no sales tax.

Easy to install and maintain

  • Dual 4-20mA and 0-5/0-10V output (jumper selectable)
  • Field replaceable CO2 sensor

High reliability reduces call backs

  • Non-dispersive infrared sensing element (NDIR)
  • 15+ year life expectancy on CO2 sensing element
  • Industry leading 7-year limited warranty on electronics; NDIR module 3 years

High accuracy for improved system performance

  • Auto-calibration mode returns sensor to baseline values
  • ±40ppm, ±3% of reading
Power Supply   12-30VDC/24VAC(1), 100mA max.
Analog Outputs Dual Analog 3-wire 4-20mA and 0-5V/0-10V (2) (jumper)
Output scaling 0 - 2000 ppm
Sensor Performance Type Non-dispersive Infrared (NDIR)
Accuracy ±40ppm, ±3% of reading
Response time 60 seconds to 90% reading
Output update rate 3 seconds
Operating Environment Temperature 32 to 122F (0 to 50C)
Humidity 0-95% non-condensing
Enclosure  Material ABS Plastic
Dimensions 4.0’ h x 4.4”w x 2.1”d (+6.8” probe)
  1. One side of transformer secondary is connected to signal common. Dedicated transformer is recommended.
  2. 15-30VDC/24VAC power supply voltage required for 10 volt output.