Detailed Product Description: The operating principle bases on a free-floating magnetic
piston、which responds only to the motion of fluid within the pipeline、not to
static or system pressure. In the presence of fluid flow、controlled
movement of the piston actuates an external hermetically sealed reed
switch、thus producing the required signal which can be used to actuate audible
or visual alarms as well as relays or other. Control of various amounts of flowing liquid in a small-scale
process. Detection of amount of flowing liquid in a pump、hot water and warm
water supplies.