Submersible hydrostatic pressure transducer Safir-M 3XXX, also referred to as a liquid level probe, designed to measure the level of liquid in open tanks. This type of transducer is used in water wells, water towers, sewage pumping stations (SPS), in storage tanks.

The transducer housing is made of stainless steel with an integrated reference pressure cable; the sensor element of the pressure pressure transducer is based on a temperature-compensated silicon sensor protected by a stainless steel diaphragm.