Apex Flow sensor 1/2 suitable for pipe diameters of 20 mm measures the water flow in combination with the Apex system
This flow sensor is designed to be installed in the pipe where you wish to measure the flow speed. To use it, simply connect the sensor to the FMM (please note that it is not included).
The flow sensor features a British Standard Parallel Pipe (BSPP) thread. By using a 20mm x 1/2″ PVC wire sock, you can easily install the sensor in a 20mm pipe. (Please keep in mind that wire socks are not included.)
The FS-50 (1/2″ sensor) is capable of measuring flow rates ranging from 110 to 950 liters per hour.