Quote:
Originally posted by unregistered
ready for another lesson, eh ?
ok
the output is proportional to the excitation voltage, so you need a 'stiff' source
and the factory cal is at 10 VDC (I would guess 10.00)
. . . .
the DPs we're dealing with are pretty small (for an appropriatly sized unit),
are the pump pressure fluctuations going to be hopping around ?
if so, how will you 'smooth' them ?
. . . .
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Since87's idea is to convert the signal into RPM, which would be translated into 1'000 rpm per gpm.
I think I ought to start with a straight pressure reading, where 1'000 rpm equals 1 psi.
Stabilizing a 10 Vdc supply isn't a problem, but I did make a note of it, thanks.
I fully expect fluctuations in the flow (and as a result, the pressure). I'm going over starting conditions (i.e. pressure bursts) specs/recommendations. The response time will be critical, but the Maxim chip seems pretty responsive, at 3.2 kHz.