people are familiar with how the generator (alternator) in their car
works. Simplified, you have a wire passing through a magnetic field,
which creates a voltage output. A magnetic flow meter(magmeter) is
similar - the fluid is a conductor (wire), passing through a magnetic
field created by the meter), and the resultant low level voltage signal
is detected by electrodes on the sides of the flow tube.
A magnetic flow meter is close to being the ideal flow meter for liquids, i.e.
all solid state, no moving parts, accuracy's down to (0.2% of rate, capable of
handling most corrosive fluids. The measuring tube is an open pipe, you could
run tree branches through the meter.
The negative side is that the fluid must be a conductive liquid of at least 5
microSiemens/cm (same as micromhos/cm) and cannot contain anything that will
coat the electrodes with a non-conductive film or barrier. The meter uses a insulating
liner, which is subject to erosion by slurries. We offer a wide variety of liners
to handle different fluids.
If the fluid is a conductor, there is very little this meter cannot handle. If
you contact us for a quotation, we will want to know what the fluid is, pressure
and temperature. If the pipe is a nonconductor (PVC), or coated, be sure to tell