In one of my applications I wanted to use a clamp-on ultrasonic flow meter (transit time type) but in the pipe I found a lot of scaling. So I need to know which type of flow meter is good to use in this case.
I wanted to use a non-intrusive instrument as it is a running unit and getting a shutdown is difficult. So please suggest which is the best type of flow meter to be used as I feel transit time sensor will not work properly for this particular case.
If at all we have to use intrusive methods only, then please which is the best meter/sensor with minimal tapping to be created because inline full bore instruments installation is not possible in this unit.