The compact design, simple mounting and different options for data output permit operation with numerous applications.
Wind speed and wind direction are determined by acquiring 2-dimensional horizontal components of ultrasonic measurement paths positioned at right angles in relation to each other. The speed of sound can be additionally used to calculate and output the acoustic virtual temperature. The ultrasonic measurement principle allows inertia-free measurement of gusts and peak values.
Air temperature and relative humidity are measured via a built-in precision combination sensor, which is equipped with a weather and radiation shield. Barometric air pressure is measured with a MEMs (micro-electro-mechanical system) sensor, based on piezoresistive technology.
Measurement of the precipitation intensity are contactless using a signal reflected with a Doppler radar. When calculating, the intensity captured for the last minute is extrapolated to an output for one hour. The type of precipitation can roughly be determined from the measured values of rainfall speed, intensity, temperature and humidity.
Brightness is captured by 4 photo sensors with spectral sensitivity curve. The direction of the light source is calculated using the prevailing intensity conditions. The logarithmic intensity characteristic of the photo sensors allows light intensities to be measured and output in a wide range between 1 – 150,000 lux.
A GPS receiver is used for the determination of position and as a real-time source. Additionally, it is used to calculate the current position of the sun. Position, time and position of the sun are provided via the RS485 / RS422 interfaces.
A RS485/422 interface is available for serial communication. It can be operated in full or half duplex mode. Predefined data telegrams are available for outputting measured values (e.g., VD, VDT, NMEA, etc.). A Modbus RTU protocol is additionally implemented for extended standardised communication. The device can be switched to Modbus RTU mode with the relevant command.
The CLIMA SENSOR US is equipped with a built-in heating system.
