Why does Rosemount not manufacture pressure switches?

Or I'm wrong, I can't find it.

 

Because Rosemount make Transmitters.

There are plenty of good pressure switches on the market. If you have a control system you might consider using a pressure transmitter and do the switching in software. This has the added advantage that you can see the actual pressure.

Some pressure switch manufacturers (UE, for example) have pressure switches with a digital display.

Roy

 

United Electric & CCS (custom control sensors)
http://www.ccsdualsnap.com/compact.htm

They both have a great variety of pressure switches for any application.