Sensor temperature and relative humidity - STH 102 is designed to measure temperature and relative humidity in areas protected from water.
Temperature and relative humidity sensor - The STH 102 consists of a plastic head with ribs in which a printed circuit board with individual sensors and a converter are located to ensure communication via the RS 485 bus. The temperature and relative humidity are measured by a common internal sensor. microprocessor and converted into MODBUS RTU output signal. The sensors comply with protection class IP 30 according to EN 60529.
Temperature and relative humidity sensor - STH 102 is designed to operate in a chemically non-aggressive environment. The method of use must be chosen according to the temperature and the chemical resistance of the head. STH 102 temperature and relative humidity sensor. The operating conditions to ensure correct operation are as follows:
ambient temperature: -40 to 80 ° C
relative humidity: 0 to 95% (non-condensing)
atmospheric pressure: 87 to 106 kPa
Temperature measurement range
-40 to 80 ° C
Temperature measurement accuracy
± 0,5 ° C in the range of 0 to 65 ° C ± 0,7 ° C in the range of 65 to 80 ° C ± 1,1 ° C in the range of -40 to 0 ° C
Relative humidity measurement
0 to 95%
Relative humidity measurement accuracy
± 3% in the range of 10 to 90% ± 4,5% in the range of 0 to 10% and 90 to 95%
RS485 / MODBUS
No, can be provided on request
15 to 30 V DC
Nominal supply voltage U n
24 V DC
max: 500mW typical: 300 mW
Degree of protection
IP 30 according to EN 60529
71,9 x 59 x 27 mm
Recommended conductor cross-section
0,14 to 1 mm 2
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.