The combined sensor of humidity, temperature and CO2 with a RS-485 interface.
The RHT–CO2–10k sensor is a device used to measure temperature and relative humidity and it is made on the basis of a modern, pre-calibrated digital converter. The sensor is also used to measure carbon dioxide concentration with atmospheric pressure of up to 10 000 ppm (1%) in buildings, especially in poultry houses, pig houses and mushroom growing facilities.
The sensor is designed for communication in RS-485 network. Information about measured temperature, humidity and CO2 concentration is sent digitally to the master device (a recorder, a PC computer, etc.).
A digital transducer for measuring temperature and humidity is mounted outside the enclosure in a removable cover containing a mesh filter that protects the sensor against dirt. The ingress protection class of the sensor meets requirements of IP 55 (except the sensor’s housing). The sensor is equipped with a hermetic plug that makes its disassembly easier when not used (e.g. during cleaning or disinfection of a poultry house). During its production there was used a patent-protected CO2 sensor of long service time and accuracy of measurements.Technical Data:
|Supply voltage||12..24 V DC|
|Power consumption||max. 16 mA ( Us = 12 V)|
|Range of operating temperature||0 ÷ 50 °C|
|Accuracy of temperature measurement||± 1.0 °C (in the range of 5 ÷ 45 °C)|
|Range of relative humidity measurement||0 ÷ 100 %|
|Accuracy of relative humidity measurement||± 3 % (in the range of 20 ÷ 80 %); ± 5 % (in the range of <5 % and >95 %)|
|Update interval of T, RH indications||4 seconds|
|Update interval of CO2 indications||15 seconds|
|Range of CO2 measurement||400..10000 ppm|
|Accuracy of CO2 measurement||±100 ppm +5 % of measured value|
|Settling time||about 300 s (rapid change of CO2 concentration from about 600 ppm to about 5000 ppm)|
|Kind of an interface||RS-485, JOTAFAN protocol, MODBUS-RTU|
|Parameters of MODBUS-RTU transmission||9600 8N2|
|Ingress protection class (except the housing of a temperature and humidity sensor)||IP50|