Snow Height

TNU sensors capture snow level up to either 4 meters. Functioning system is related to the emission of short ultrasonic frequency pulses towards the depth of snow to investigate and to the subsequent reception of the reflected wave, generated once the pulses reach the surface the snow is lying on. It ensures excellent performance for what concerns accuracy, thanks to a system of self-correction of the level measurement. Indeed, by means of an integrated temperature sensor, it can easily take into account the variation of the sound speed as a value depending on the density of the air. The on-board electronics calculates the level as a function of the time between the emission of the signal and the reception of pulses. In particular, TNU is equipped with an amplification and collection system specifically designed to be implemented on snow level investigations. In fact, the snow has a high sound-absorbing property (it reflects the pulse not only from the external surface, but also from the deeper layers). A protective body composed of a special self-ventilated solar shading contains the transducer and protects it from weather conditions, allowing to achieve a proper measurement of the air temperature. The sensor is supplied with power and signal cable (12m).

The TNU sensor measures snow levels up to 8 meters by emitting short pulses of ultrasonic frequency towards the surface of the snow cover and detecting the returning echoes. The TNU guarantees excellent performance from the point of view of accuracy thanks to a measurement self-correction system which, through an integrated temperature sensor, takes into account the variation in the speed of sound as a function of the air density. The on-board electronics calculate the distance based on the time intervals between emission and reception of the reflected pulses. In particular, the TNU is equipped with an electronic amplification and capture system specific for applications on snowpack. Snow, in fact, has a high sound-absorbing property (it reflects the impulse not only from the external surface, but also from the layers beneath the surface). The protective external body contains the transducer, and is partly made up of a self-ventilating solar shield in order to allow the correct measurement of the air temperature as well as to protect the sensitive component from direct exposure to atmospheric agents. The sensor is supplied complete with power and signal cable (12m).