Principle of digital pressure sensor: Digital pressure controller is also called digital electrical contact pressure gauge, digital pressure relay or digital pressure switch. It has setting and control functions. The upper and lower limits can be set within a very small interval. It is the first choice instrument for precision measurement and control. It can fully make up for the traditional mechanical electric contact pressure gauge in terms of measurement accuracy, control sensitivity and service life. shortcomings. Performance characteristics of digital pressure sensor: 1. LED digital tube digital display, high resolution, no value error. 2. Using single-chip microcomputer, combined with powerful software technology, the instrument has high intelligent functions. 3. Parameter correction function can correct the zero point and error value of the instrument at any time, so that the instrument can maintain its original accuracy.