MONITORING DAM WATER LEVEL
Water level monitoring at dams is a basic measurement. The main requirements for such a measurement are reliability and very high accuracy. Series 36XW level sensors from KELLER Pressure can fulfil these requirements while also providing an added benefit in the form of communication via a bus system.
Dam in Niedzica, Poland
Hundreds of PAA-36XW level sensors have been installed at numerous dams in Poland, which experiences major flooding on a regular basis. Here, capillary solutions with relative pressure sensors are often not acceptable due to humidity problems. Thanks to RS485 MODBUS communications, all the absolute pressure sensors in the PAA-36XW series can easily communicate with barometric sensors that also use MODBUS. Their very strong additional lightning protection also makes the level sensors virtually indestructible. None of the sensors has failed since 2009, whereas prior to that time the electronic systems were often damaged by lightning.
Apart from the elimination of humidity problems, the use of the absolute pressure sensors provides for extraordinary long term stability and a total accuracy of 0,05 % to 0,1 % in real conditions.
Dam near the Lomnica river in Karpacz, Poland
