AM-ULF-H Handheld Ultrasonic Flow Meter

The handheld reads flow the way any clamp-on ultrasonic meter does — two transducers held on the outside of the pipe, nothing in the stream — but the electronics, the battery and a 4×16 English display sit in a 210 × 90 × 30 mm ABS case, with a 5 m cord per transducer. That is a unit one person carries along a pipe run and reads at each point, instead of a device bolted to one line.

Use it where the answer is needed once and a permanent installation is not worth the money: a survey across many measuring points, a check on a meter already installed and paid for, a balance over a short trial, or a pipe you cannot cut into. What you give up is continuity — RS-232 to a laptop instead of a 4–20 mA loop, over 12 hours per charge, and a unit brought to the pipe rather than left on it.