The INS-FM16 flow meter provides visual and electronic indication of real-time coolant flow rate. Internal blue LEDs can be illuminated with optional components described below.
A frequency circuit FM03 (sold separately) multiplies the RPM signal to allow it to be read by most fan tachometer headers (such as those found on ATX motherboards). This signal is intended to allow fan detection software (including BIOS) to enable the appropriate alarm or shutdown procedure if the flow meter impeller stops rotating. The “RPMs” represent approximate flow meter coolant in mL/min, and not revolutions.
Wire length is approximately 19″ (48cm).
This flow meter featured in this DazMode’s YouTube video :