This is the 20mm Arad multi-jet PB meter with a PVC body that is designed for use with fertilizers and some chemicals. Inlet and outlet are 20mm male BSP threads and the pulse output is 1 pulse per 10 litres of flow.
Measuring flow of fertilizer solutions, for agriculture, distilled water, seawater and many other diluted solutions.
The impeller is corrosion resistant and is the only moving element that comes in contact with the liquid.
Electrical output (EV) pulse.