Precise and dependable stationary leak monitoring of drinking water networks with outstanding low cost of ownership

The use of noise monitors for stationary monitoring of drinking water networks is a tried and tested technology. Noise loggers are deployed on the water pipes to effectively ‘listen’ to the water networks so operators can see quickly and efficiently if water losses are occurring in their network. At the recent IFAT exhibition in Munich, Sewerin showcased their unique SePem 351 noise logger® which uses LoRaWAN to transmit the measurement data. LoRaWAN, a brand used under the LoRa Alliance, is an easy-to-install and cost-effective network that many utilities successfully use to monitor various municipal services.

The battery life of a SePem 351® is 9 years. This exceptionally long running time, in conjunction with the LoRaWAN network, gives the SePem 351 a very economical total cost of ownership throughout its long lifespan. The instrument’s excellent standard of reliability further enhances both performance and economy.  

The SePem 351® also features a highly sensitive microphone that provides an excellent level of measurement data over a far longer distance than other models on the market. The microphone therefore reduces costs further because its significantly longer range lowers the quantity of noise loggers needed in the network. Despite the greater distances between noise loggers, the quality and reliability of the measurements are not compromised in the slightest.

Hermann Sewerin developed the SePem 351® specifically for stationary use to measure water networks at preset times. Once the measurement is taken, the recorded data is analysed and prepared for transmission. The logger needs to be registered in a LoRaWAN network to enable this to happen.

New leaks can be detected in a matter of just a few hours, as the measured values from each SePem 351 are transmitted every day. Network operators can feed the determined data into existing network information systems. If their network system is unavailable, the data can be obtained and analysed via the cloud-based SePort solution.