Reed Switch Flow Meter

These dry contact reed switches are hermetically sealed and have a 5 foot cable lead.

Reed switch flow meter. The magnet is confined in the casing and drives the external gear counter through the magnetic flux. The upcounter will be added up by one the tidub33 december 2015 flow measurement with reed switches and ble. For decades kobold has been a world leader in process measurement and control solutions. A flow sensor or a flow meter is a device used to quantify the volume of fluid passing through a point in a pipe.

There s a pipe through which liquid flows 1 with a paddle wheel mounted inside it 2. We offer one of the industry s broadest lines of sensors switches and transmitters to measure and control flow pressure level and temperature. The cable has 2 wires for single pulse switches and 3 wires for double pulse. The rotating magnet makes a reed switch open 4.

Reed switch based flow sensors are built with a paddle having multiple magnets or a single multi pole magnet that continuously triggers the reed switch to generate a square wave output that can be translated to volume of fluid. A typical reed switch flow meter works something like this. They all attach to the meter with a single screw and positioning is fool proof due to the shape of the switch. It is closed with a frequency proportional to the flow rate by a serially integrated magnet within the counter and opens itself automatically again.