If there is any possibility of getting condensation in the tubing,  I=20
would go for the sensor to be mounted with a minimum of tubing, and even=20
then think about liquid in the line. If it is a liquid filled line, then=20
the difference in elevation will be a factor.

On 2/28/2012 1:02 PM, Shawn Donohue wrote:
> Hi
>
> My first posting by reply so see if it works....
>
> I am installing a circuit that measures a small pressure . The
> display circuit will be about 25 feet from the source. I am wondering
> if it is better to have the transducer as close to the source as
> possible and run the wires to the display board or locate the
> transducer in the display case and run the 1/4" tubing from the
> pressure source to the transducer. I am guessing that I may need to
> install a buffer/driver op amp at the source if the transducer is
> located there but by moving the transducer, I would cause (I think)
> error due to the length of tubing (1/4" plastic).
>
> The pressure is in the range of 1-2 psi and the sensor signal is 1-3 volt=
s.
>
> The sensor is similar to this
> one   http://search.digikey.com/ca/en/products/MPX5010GP/MPX5010GP-ND/464=
055
>
> Advice?
>
> Thanks
> Shawn
>
>   =20
--=20
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