Sprite icons
Sentera uses cookies !
Privacy policy
Logo Sentera
Sentera – your partner in HVAC control solutions
Grey water proof enclosure with duct probe
Grey water proof enclosure with duct probe
Grey water proof plastic enclosure with metal screws
Grey water proof enclosure with duct probe
Grey water proof enclosure with duct probe and black mounting flange
Grey water proof enclosure with duct probe
Electronic circuit in plastic enclosure

Intelligent duct temperature | humidity | CO | NO2 sensor, 24 VDC

Product description

Duct toxic gas sensor with single output. It measures temperature, relative humidity, CO and NO2. The supply voltage is 24 VDC. The sensor algorithm controls the single analogue output based on the measured values. This single output can be used to directly control an EC fan, an AC fan speed controller or a damper actuator. The default output is 0-10 V. Other output types can be selected via Modbus RTU. All measurements and the output value are available via Modbus RTU. The CO / NO2 sensor element is replaceable. All settings can be adjusted via Modbus RTU.

Article code
Duct CO - NO2 sensors
Current stock
0 U.
Next arrival
14/07/2023 - 5 U.
Factory lead time
5 Week(s)

Additional specifications and description

Optimised for air ducts
This HVAC transmitter measures temperature, relative humidity, CO and NO2 concentration in air ducts. Based on the temperature and humidity, the dew point is calculated. This sensor will function best if it is installed in a straight section of the air duct. Avoid installation in turbulent air zones nearby filters, fans, cooling coils, etc. Position the sensor correctly with respect to the airflow direction. Please consult the mounting instructions for more detailed information.
How does it work?
The sensor algorithm controls one output. This output can control an EC fan, an AC fan speed controller or a damper actuator. The output value varies proportionally in function of the measured temperature, relative humidity and CO level. E.g. as temperature, relative humidity or CO level approaches their maximum limit, fan speed will increase or the damper will open.
 Position of Sentera Duct sensor
Easy to use!
This sensor doesn't require configuration. Once installed, it is ready to use. The default settings will do for most applicationsIf necessary, the settings can be adjusted via Modbus RTU. For example, a different output type can be selected to make it compatible with other devices: 0-10 VDC / 0-20 mA / 0-100 % PWM. The Modbus register map provides a complete overview of all adjustable settings.
Mounting Sentera duct sensors
Sentera duct sensors are mountable two ways: using a flange or without one. The flange is used for mounting the sensor on round ducts. If the duct is rectangular, the flange can be ignored. Mount the sensor with the probe opening in the centre of the duct. For the sensor to work correctly, the probe opening must be mounted towards the airflow direction. This way, the air can enter and exit the probe opening smoothly. 

4-wire connection
The supply voltage is 24 VDC. The ground terminals of the power supply (V-) and output (GND) are internally not connected. This means that a 4-wire cable is required to connect this sensor. Most 24 VDC power supplies offer protection against short circuit, overload and overvoltage. A 24 VDC supply voltage increases the safety and reliability of your installation.
High quality
Each sensor is calibrated and tested in our factory. In the unlikely event of CO sensor element failure, this module can be replaced. We use sensor elements and components of high quality. This ensures the long-term stability and accuracy of this HVAC transmitter. The enclosure offers an IP54 protection against ingress of dust and moisture. The sensor element is integrated in the probe of the duct sensor. This probe has an opening to have a direct contact between the air flow and the sensor element. The sensor probe offers an IP20 protection.      

Related articles

Website is not supported on Internet Explorer! Please use Chrome, Firefox, Edge or other browser.