Resistive piezometer with logger: purpose
The resistive piezometer is a relative pressure transducer that determines piezometric head by measuring the hydrostatic pressure acting on the sensor. Inside the self-supporting cable, a small tube connects the sensor reference chamber to the atmosphere, so that any changes in atmospheric pressure act simultaneously on both the piezometric surface and the reference chamber. This allows only the water pressure, and therefore the water level, to be measured.
Integrated logger version
In the integrated logger version, a data acquisition board automates and stores measurements. The sensor consists of two parts connected by a cable, the length of which varies according to the installation depth. The lower part, where the sensor and circuit board are located, is cylindrical, with a diameter of 21 mm and a length of 75 mm. The upper part, whose shape varies according to the installation requirements, contains the connector for interfacing with a computer.
Autonomy and applications
Exceptional autonomy, thanks to very low power consumption (with a one-hour measurement interval, battery life exceeds 2–3 years), high storage capacity, compact and robust construction, and excellent-quality components make this level gauge a unique tool for controlling and monitoring water levels in piezometers, wells, pits, canals, tanks, rivers, lakes, and similar applications.