Pressure Sensing Device

[PrakashMeena]

I need to run an electric DC motor, by sensing the pressure at a hydraulic pipeline(lesser the pressure more the speed of the DC motor).
What pressure sensor should I use. Someone suggested a piezoelectric pressure sensor, but will it work properly with the hydraulic pipeline, which would have highly varying pressure.
Where can I find more about piezoelectric pressure sensors, their specifications and different types.
Or any other sensor that I could use with hydraulic pipeline

 

[micalbrch]

A good source is BD Sensors (

http://www.bdsensors.com).

They have electronic pressure switches with 4-20 mA output to control the speed of your motor in dependence upon the pressure in the pipeline. They work well with hydraulic fluids and variable pressures.

 

[StoneCold]

Just to throw another unit out there try

http://www.noshok.com.

We have had good luck with these units and there price is very competative. For applications where you can afford better. foxboro or Emerson make better high end units.

Regards
StoneCold.