magnetic flowmeter

K

Thread Starter

karthik

Still now, i know coil supply foe mag. flowmeter is A.C.
One of friend telling we can also give puslating D.C supply.

I want to know what is pusulating d.c supply what are there advantages and disadvantages.

Then what are the drawbacks of A.C supply.
 
Today Pulsed DC mag is normally used for standard applications. Pulsed DC gives better accuracy, easier to determine the exact level on a "flat" peak than a curved.

AC is mainly used where process noise is a problem, for example high fiber content (pulp etc).

Pulsed DC can normally also operate at two different frequencies, 5-6 Hz normal, 30-40 Hz in (somewhat) noisy.

High signal DC mag is an alternative to replace AC mag, you get better accuracy in noisy applications.
 
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