Case: Flow measurement in case of turbulence

Used equipment:

The challenge:

A customer wanted to measure the amount of water from overflow pumping from a rainwater basin. Several different flow meters had been tried without result, due to strong turbulence from the pumps.

The solution:

When the outlet pipe was with full flow, there were two solutions to the challenge. Both solutions require an excavation for the outlet pipe, as well as the construction of a well at a suitable distance from the pumps, to ensure the water was calm.

One solution concerns the mounting of a magnetic inductive meter on the outlet. However, the solution was quickly discarded as it requires the pipe to be drained, cut and fitted with flanges before installation – A rather costly affair.

The second solution, that was used, concerns the installation of an NFP with a pipe sensor, together with a tapping set. The advantage of the tapping set was that it can be mounted directly on the pipe, with or without pressure.

A solution that was a much cheaper, faster (installation took about an hour), more accurate and stable solution, which also had the advantage that the sensor can be easily removed when cleaning the pipe, due to the excess cable.