All meters from Kamstrup are based on the ultrasonic measuring principle. This has been the case since 1991, and 20 years of experience have proven that this is the most reliable and long-term stable technology. No other metering technology accomplishes the same accuracy.
How the water meter works.
Two ultrasonic transducers are used to send ultra sound signals with and against the flow respectively. The ultrasonic signal running with the flow reaches the opposite transducer before the signal running in the opposite direction, and the time difference between the reception of the two signals is converted into flow velocity and thereby also into volume.
In addition, the meter has no movable parts that can be worn out or break, and it is also insensitive to particles and impurities in the water. Therefore, it keeps the accuracy, even after several years of installation and use.
An ultrasonic water meter is composed by two parts:
- A flow part with ultrasonic transmitters
- A calculator containing all electronics and communication
In MULTICAL 21, the two parts are packed together in the same meter case to obtain a compact design and a good protection.
The calculator, containing electronics and communication, functions as a small computer with memory and transmitting unit, and as the water meter is electronic, it is possible to register much more than just the water consumption.
With MULTICAL 21, it is also possible to monitor possible damaged pipes in the form of leakages and bursts, and even a dripping tap will be visible as MULTICAL 21 starts counting at only 3 litres per hour.