I'm looking at an ultrasonic flow meter for 10" HDPE forcemain and I was wondering if anyone knew what the advantages/disadvantages of a single head flow sensor would be.
i have used a single head sensor for gravity before but never a two headed one. in my experience the single head works great in good pipe. as soon as there is turbulance in the pipe though forget about it. i don't know if the double headed would work any better but that is my two cents worth.