Apparatus and Methods for Measurements of Pressure

A method for non-invasively measuring pressure inside the pipe, the method comprising:

• (A) installing a strapping device onto an outer surface of the pipe, the strapping device comprising:
• (i) a band for secureably clamping onto the outer surface of the pipe;
• and
• (ii) a sensor, wherein the sensor is installed on the band, and wherein the sensor is in operative communication with a processor;
• and
• (B) measuring, using the processor, a change in residual stress exerted on the pipe, wherein the change in the residual stress exerted on the pipe is associated with a corresponding change in pressure inside the pipe.

A method for non-invasively detecting pressure inside a pipe comprising:

• (A) installing a strapping device onto an outer surface of the pipe, the strapping device comprising:
• (i) a band for secureably clamping onto the outer surface of the pipe;
• and
• (ii) a sensor, wherein the sensor is installed on the band, and wherein the sensor is in operative communication with a processor;
• and
• (B) measuring, using the processor, a change in an outer diameter of the pipe, wherein the change in the outer diameter of the pipe is associated with a corresponding change in pressure inside the pipe.