Air Pressure Transducer

tom cloud cloud at hagar.ph.utexas.edu
Mon Oct 7 20:06:57 GMT 1996


>Does anyone know of a source for a fairly low cost Air Pressure 
>Transducer that measures positive and negative gauge pressure? 
>It doesn't have to measure extreme pressures.  I'm looking for a 
>transducer that will measure boost pressures of up to 30 psi and
>vacuum down to - 14.7 psi.  It would also be helpful if the 
>transducer was linear in measurement.  Any help on any transducers
>would be greatly appreciated.  
>Chuck Thigpen

have you looked at the (recent) recurring thread(s) re MAP ??  there's
posts friday and today from meself and Todd Knighton re Motorola pressure
xducers available from electronics suppliers for about $25 that will
read absolute.  why can't you convert that to gauge? a range of 30 psig
to -15 psig is 3 atmospheres.  if you're worried about the actual
correlation between barometric (i.e. changing atmospheric) and
manifold pressure, use two -- one to sense atmos and the other for
manifold -- or use a differential version.


Tom Cloud <cloud at peaches.ph.utexas>





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