3.2, the failure of electronic manometer electronic pressure gauge needs long-term use in high pressure, high temperature and other harsh geological conditions, together with its components is easy to aging, these external factors and internal factors that can lead to the manometer measurement error. oil test, trial mining process manometer accuracy, resolution and stability parameters have higher requirements, so using the larger measurement error in the process will make a serious deviation from the actual value of the measurement value of the pressure gauge, resulting in the failure of electronic pressure gauge manometer lead to failure in the course of the main reasons are the following: