Combined STHC probe - CAN protocol

Sensor temperature, relative humidity and CO 2 - STHC 104 consists of a plastic head with grooves in which there is a printed circuit board with individual sensors and a converter ensuring communication via the CAN bus. The temperature and relative humidity are measured by a common internal sensor whose signal is processed in a microprocessor and converted to CANopen output with CiA DS 301 specification. The CO value 2 is measured by an NDIR module whose digital signal is also converted to CANopen output with CiA DS specification. 301. A function of self-calibration is available for the CO concentration sensor 2 to ensure that the sensor is set to a CO value 2 minimal corresponding to the level of external concentration. Temperature, relative humidity and CO sensor2 - The STHC 104 complies with the degree of protection IP 30 according to standard EN 60529. Its pleasant design and its high-quality materials guarantee that the sensor does not interfere, even in interiors subject to high aesthetic requirements.

Sensor temperature, relative humidity and CO 2 - STHC 104 is designed to operate in a chemically non-aggressive environment. The method of use should be selected based on the temperature and chemical resistance of the sensor head and the individual sensors. Operating conditions to ensure the proper functioning of the CO sensor 2 are the following:

• • ambient temperature: 0 to 45 ° C
  • relative humidity: 0 to 85% (non-condensing)
  • atmospheric pressure: 87 to 106 kPa  

Note: The manufacturer reserves the right to modify the design and technical characteristics of the products.

SENSOR INSTALLATION AND MAINTENANCE
The sensors are designed to be mounted on a wall or other vertical surface. For fixing, it is necessary to prepare the required holes for mounting screws using a template (supplied with the sensor).
Before connecting the power cable, it is necessary to separate the perforated cover from the plastic base. Remove the cover and insert the cable through the 9 mm hole, apply the base to the surface and screw with two screws or bolts. The length of the bolts or fixing screws for fixing should be chosen according to the thickness of the plastic base. Connect the power cable to the terminals in accordance with the “Wiring” section. Diagram: place the perforated cover on the fixed base and lock it by clicking on it. After installation and connection to the electrical measuring device, the sensor is ready for use. The sensor does not require any particular maintenance.