A sensing and displaying system is provided including a sensor unit having a transducer disposed in intimate contact with a vessel. The transducer senses a characteristic within the vessel like pressure and outputs an electrical signal representative thereof. The sensor unit further includes a response...http://www.google.com.au/patents/US5483826?utm_source=gb-gplus-sharePatent US5483826 - Remotely actuated pressure sensor responsive to an actuating signal
