Additional specifications and description
Optimised for air ducts
People and animals produce CO2 or carbon dioxide while breathing. That makes CO2 concentration a good indicator for the occupancy and activity level in a space. In many applications, CO2 sensors are used as an indicator for the ventilation requirements. This HVAC transmitter measures temperature, relative humidity and CO2 in air ducts. Based on the temperature and humidity, the dew point is calculated. All values are available via Modbus RTU communication. 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.
Reduced installation time
One RJ45 connector is all it takes to connect this sensor! Modbus RTU communication and the power supply are connected via one UTP cable - we call it Power over Modbus or PoM. All measured values are available via Modbus RTU communication. The supply voltage is 24 VDC. To facilitate wiring, we recommend to use a Sentera 24 VDC power supply with RJ45 connector. These power supplies offer protection against short circuit, overload and overvoltage. A 24 VDC supply voltage increases the electrical safety and reliability of your installation
This sensor doesn't require configuration. Once installed, it is ready to use. The default settings will do for most applications. If necessary, the settings can be adjusted via Modbus RTU.
E.g. the temperature range, the relative humidity range or the CO2 range can be adjusted via Modbus RTU. Also the light intensity of the LEDs for status indication is adjustable. The Modbus register map provides a complete overview of all adjustable settings.
Corrosion protected and Ammonia resistant
The electronic components and pcb of this duct transmitter are treated with a corrosion protective and ammonia resistant coating. This makes the sensor extremely suitable for the agricultural sector or applications with high humidity. Each sensor is calibrated and tested in our factory. In the unlikely event of CO2 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.