Measure flow from outside a pipe. The DFM-4.0 is
ideal for "difficult liquids" that would
damage regular flow meters - wastewater, slurries,
sludge, chemicals, viscous liquids and abrasives.
There is no obstruction to flow and no pressure drop.
The standard, strap-on ultrasonic sensor fits any
pipe 1/2" (12.5 mm) inside Diameter or larger.