All pressure switches lose contact

I understand that all basic presure switches cause a positive contact, until thay get a reading of what ever loses presure,then the positive contact is lost.
I need a switch that is negative when the presure is on it,makes positive contact when the pressure is off. Is there any such presure switch as this on the markrt.

Thanks for ALL good answers.

If you can't find one that gives the correct output directly, you can always create what you need by "inverting" the output. A mechanical relay (or semiconductor switch) can be wired to convert a "normal open" switch to a "normal closed" one.