Flow measuring in an installation that is in operation
Occuring problems:
Fluctuations in the suction pressure
Fluctuations in the discharge pressure
Fluctuations in the motor sound
Fluctuations in the motor rpm
Fluctuations in the measured sound level dBA as well as dBC
To solve this kind of problem, you have to collect as much measurement data as possible. Do keep in mind that there is always the chance that you need more information to check your initial measuring.
Install a clamp-on flowmeter to collect all the necessary flow details.
The next thing is to combine all measurement details and the related problem can be solved.