Wireless system for measuring pressure and flow in tubes

A system for remotely sensing a pressure generated by a fluid within a vessel, comprising:

• a scanner for generating an interrogation signal and receiving a response signal, the scanned being positioned externally with respectect to the vessel;
• and
• a transducer positioned within the vessel, the transducer including:
• an antenna for receiving the interrogation signal and for transmitting the response signal;
• a response circuit coupled to the antenna for receiving the interrogation signal and generating the response signal in response to the interrogation signal;
• and
• a sensor coupled to the response circuit for sensing the pressure generated by the fluid and adjusting one or more electrical characteristics of the response circuit in relation to the sensed pressure;
• wherein the response circuit causes a delay in the transmission of the response signal so that the response signal is transmitted at a time separated from and following transmission of artifacts of the interrogation signal.