Duct Humidity Sensors

View Details QVM62.1 | Air Velocity Sensor, 0 to 10 Vdc | Siemens
$176.57 each
View Details QFM81.2 | Duct Hygrostat with External Setpoint, 30 - 90% RH | Siemens
$139.34 each
View Details CDE | CO2 | Duct | Economy | No LCD | Veris
$244.63 each
View Details HU-224-3-VDC | 0-10VDC | Duct RH Humidity Sensor | 3% Accuracy | Mamac
$114.75 each
View Details 22DC-51 | Duct CO2 Sensor V | Belimo
22DC-51 | Duct CO2 Sensor V | Belimo
Brand: Belimo
SKU: 22DC-51
$278.10 each
View Details QPM2100 | Duct Sensor CO2, 0 to 10V | Siemens
$371.37 each
View Details 01DT-5LL | Duct Temp Sensor NTC10k 100x6 | Belimo
$14.85 each

More About Duct Humidity Sensors

Air ducts are an unfriendly environment for control sensors. You need an air duct humidity sensor strong enough to withstand these dangers and sensitive enough to measure the humidity.

We offer 117 different control sensors to measure the humidity in your air ducts.

Without specific sensors monitoring the moisture and debris in your air ducts, you could find pollutants and mold growing in them. To ensure you do not have these problems, we work with top-rated manufacturers such as ACI, Belimo, Mamac, and Veris.

Working with these companies, we can maintain an accuracy of ±3% for the temperature and relative humidity of your air duct.

Additionally, we carry a Belimo air duct sensor with a BACnet or Modbus communication system. These communication protocols connect your HVAC to your network.

Belimo also manufactures 14 sensors with a plastic box housing. While metal is the standard material used in a duct, plastics are often less susceptible to rusting. Rusting air duct sensors are not uncommon.

Finally, our air duct sensors rely on two types of temperature & humidity signals.

The first is the Resistance Temperature Detector (RTD). The RTD uses a thin wire to detect humidity in the air duct. It then transfers the amount of moisture to a small electrical signal with a charge that ranges from either 0-10 VDC or 4-20 mA.

The second option is the thermistor. The device uses the same technique, except has a different metal to measure the humidity. The thermistor also sends an output signal to the HVAC system through a 0-10 VDC or 4-20 mA charge.

Final Thoughts

If you have a question about which air duct sensor works best for your next project, let us know how we can help. Contact our team today to find the best air duct humidity sensor for your needs.

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