High Resolution Pressure Compensation Device

[obriend1]

Hi,

I am looking for a high resolution pressure compensation device such a bellows, dashpot, etc, that is capable of a resolution of 1e-7 to 1e-8 (or the highest resolution possible). The operating conditions are 15000 psi, 150°C. We are trying to pressure compensate in the order of 5 to 10 pascals at a working pressure of 15000 psi. Does anybody know of any companies that can meet our requirements.

I have sourced a calibration pressure transducer from Paroscientific that is capable of a resolution of 1e-8; however, this device will not compensate for pressure differential.

Thanks

 

[israelkk]

I think it is tough or even impossibe but I will be glad to hear if anyone can do this. Can you explain why do you need such an accuracy?

 

[obriend1]

Israelkk,

We are trying to compensate for a change in volume between two pressure chambers in the order of fractions of microliters at 15 ksi. Thus resulting in a very small pressure drop in the order of pascals. This is for research work.