The PLS features a long-term stable, highly precise, capacitive ceramic pressure cell. This cell is extremely robust and insensitive against mechanical overload as well as against aggressive media. The sensor electronics measure pressure and temperature values. Compensating for temperature effects, water density and the specific gravitational force at the measuring site, the sensor delivers highly precise and repeatable actual water levels.

The OTT PLS can be supplied with various outputs for transferring the values to an attached datalogger - the analog 4 ... 20 mA output or the digital SDI-12 or RS-485 outputs. In addition to the waterlevel also the water temperature can be output via the serial interface.

Finally, the OTT PLS is supplied with a high quality and particularly tough stainless steel housing and even the cable for the probe is extraordinarily tough due to Kevlar fibers incorporated.

• Insensitive against mechanical overload or aggressive media
• Capacitive ceramic pressure cell for long-term precision
• Flexible due to various outputs, 4 … 20mA Signal or serial SDI-12 interface (output of water level and water temperature)
• Incorporated intelligent controller compensates for temperature and adjusted influencing factors /gravitational force, water density at different temperatures
• Probe cable with compensating capillary, Kevlar core, and connection wires
• Robust design IP68
• Resolution can be increased by allocating the 4-20 mA-signal to an individually downscaled measuring range
• Humidity absorber protects the pressure cell from condensate due to variation of the barometric pressure