Fault detection in the detection of the differential pressure transmitter failure should understand the working principle of differential pressure transmitter in order to make us more convenient and efficient to find out why. Differential pressure transmitter works: Pressure from both sides impulse tube directly on the transmitter sensor bilateral isolating diaphragm seal fluid conduction through the diaphragm to the measuring element within the measuring element measured differential pressure signal into an electrical signal corresponding thereto is transmitted to the converter, after amplification and other processing electrical signals into the standard output. Differential pressure transmitter of several common, practical measurement: 1, combined with the throttle element, differential pressure before and after the use of throttling element produces liquid flow measurement. 2, the use of the liquid pressure difference generated its own gravity, measuring the height of the liquid. 3, the direct measurement of different pipes, tanks of liquid pressure difference. Transmitters in the measurement process, often there will be some failures digital intelligent transmitters, fault analysis and timely determination process, the ongoing production is essential. According to the daily maintenance of our experience, we summed up some of the determination of analytical procedures and processes. [3] The daily maintenance 1, check the installation hole size: If the size of the mounting hole is inappropriate, the sensor during the installation process, the threaded portion is very susceptible to wear. This will not only affect the sealing performance of the device smart transmitters, and the pressure sensor is not functioning well, and may even produce a security risk. Only suitable mounting holes to be able to avoid wear and tear thread (thread industry standard 1 / 2-20 UNF 2B), usually using the mounting holes on the mounting holes measuring instrument for testing, to make appropriate adjustments. 2, keeping mounting holes clean: clean mounting holes and prevent clogging of the melt to ensure the normal operation of the equipment is very important. Before cleaning the extruder is full of smart transmitters, all of the pressure sensor from the barrel should be removed to avoid damage. When removing the sensor, the melt may flow into the mounting holes and hardened hart smart transmitters, if these residual melt is not removed when mounting the sensor again may cause damage to the top. These cleaning kit can melt residues removed. However, repeat cleaning process may deepen the damage caused by the mounting holes on the sensor. If this happens, we should take measures to raise the position of the sensor in the installation bore. Intelligent flow transmitter, China-Technology (online consultation), smart transmitters provided by Jinan-Technology Co., Jinan Huahui Technology Co., Ltd. (www.cnhuahui.com/) Shandong Jinan, pressure meters leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. - Technology leader in China with the staff warmly welcome all inquiries negotiations to create Hua Hui Technology better future.