Microclimate sensor for underground rooms

The microclimate sensor combines the measurement of barometric pressure, relative humidity, air temperature, rock temperature and air flow velocity in underground rooms. In addition, it offers flexibility in the form of expanding measurement parameters by connecting additional sensors. The device is adapted to work underground, where high air humidity can cause deterioration of electronic components and low accuracy of humidity measurement due to permanent exposure of the sensor. The housing is made with a 3D printer with special settings obtained through experimentation in order to achieve waterproof characteristics, which cannot be achieved with normal settings. Data transmission is achieved by the RS485 standard, which enables wired serial communication up to a distance of more than 1000 m, which is suitable for long underground rooms.