The rotating magnet makes a reed switch open 4.
Reed switch flow meter.
A flow sensor or a flow meter is a device used to quantify the volume of fluid passing through a point in a pipe.
A typical reed switch flow meter works something like this.
For decades kobold has been a world leader in process measurement and control solutions.
This system uses two reed switches to detect the rotating magnet inside the meter.
The cable has 2 wires for single pulse switches and 3 wires for double pulse.
There s a pipe through which liquid flows 1 with a paddle wheel mounted inside it 2.
The magnet is confined in the casing and drives the external gear counter through the magnetic flux.
We offer one of the industry s broadest lines of sensors switches and transmitters to measure and control flow pressure level and temperature.
As a passive pulser the reed sensor is designed as a potential free normally open contact.
They all attach to the meter with a single screw and positioning is fool proof due to the shape of the switch.
As the liquid flows the paddle spins and makes a magnet rotate 3.
These dry contact reed switches are hermetically sealed and have a 5 foot cable lead.