Ultrasonic Transit Time flow meter for fire pump testing
Ultrasonic Transit Time flow meter for fire pump testing
(OP)
Has anyone tried using one of those Ultrasonic Transit Time flow meters for fire pump testing? I understand the limitations of using bypass loops to do flows but sometimes you just can't go dumping a ton of water onto a frozen down town street. I'm looking at something called the NCM-603 which appears to be good for clean water full pipe applications.
Regards
Dave
Regards
Dave





RE: Ultrasonic Transit Time flow meter for fire pump testing
RE: Ultrasonic Transit Time flow meter for fire pump testing
Unless they are much improved in the last couple years, in my experience (trying to measure process flowrates) those meters are highly inaccurate.. Vibration and turbulence makes the reading jump around. Alot. Its going to be a case of eyeballing the mean, as it jumps from say 700 up to 1000 gpm..
Basically you will be able to confirm it is pumping.. But thats about it.
RE: Ultrasonic Transit Time flow meter for fire pump testing
Some of these I've seen advertise a specific accuracy rate (to within 1%) But really, how accurate is a pitot? Even the Hosemonster, whose pitot is fixed for optimum results, jumps all over the place (I haven't tried it with the remote reading kits that presumably might reduce vibration).
Regards
Dave
RE: Ultrasonic Transit Time flow meter for fire pump testing
RE: Ultrasonic Transit Time flow meter for fire pump testing
RE: Ultrasonic Transit Time flow meter for fire pump testing
Regards
Dave