Performance Indicators in Smart Pressure Transmitter Applications

Performance Indicators in Smart Pressure Transmitter Applications

The performance indicators in the application process of the intelligent pressure transmitter include measurement accuracy, output signal, instrument power supply, wiring method, response time, etc. In general, the accuracy of instrument detection is required to be controlled within the range of 1%, so when selecting an instrument, it is necessary to select an instrument with appropriate accuracy according to the actual application requirements. If the accuracy is too high, it will affect the service life of the instrument, so it is necessary to select a more economical instrument in combination with various factors. The standard signal used by most digital instruments is 4-20mA, and the load is not less than 600Ω. The output signal standard can be selected according to actual needs. The instrument generally uses more two-wire DC power supply, if you want to reduce interference, you can also use two-wire AC power supply. Response time is an important performance of measuring instruments, which refers to the display time of instrument indication information. In order to ensure the stability of pressure detection and reduce the measurement error, an independent power supply should be selected as far as possible when the instrument is working.

Maintenance of Smart Pressure Transmitter

The failure problems of intelligent pressure transmitters mainly include several aspects, such as failures caused by sealing problems, failures caused by vibration, failures caused by human beings, and failures caused by other situations. Among them, the failures caused by vibration are relatively few. Human-caused failures mainly refer to the wrong model of instrument components during instrument maintenance, incorrect installation of components such as circuit boards, or unequal parameter settings, which will cause circuit failures and damage the instrument. There are two possibilities for the failure caused by the sealing problem. One is that the poor sealing of the instrument leads to liquid immersion, which causes the instrument to fail; the second is that the poor sealing of the instrument cover causes the internal components of the instrument to be corroded by external physical and electrochemical action. In addition, there are other non-human-induced faults, such as line faults caused by poor contact, and component faults caused by poor insulation, which can damage the instrument.

In order to ensure the normal operation of the intelligent pressure transmitter, the oilfield staff must strictly do the instrument troubleshooting and daily maintenance work. First of all, register and archive the instruments currently in use, and record in detail the model, performance, precautions for use, maintenance methods and time of use of the instrument. Secondly, the maintenance personnel should do a good job in the inspection and maintenance of the instruments, and set up special posts to conduct regular inspections of the instruments and equipment in use to detect whether the instruments are in normal operation and whether there are abnormal problems. If problems are found, they should be solved in time. Third, the intelligent pressure transmitter is greatly affected by the external environment during the detection process, so it is necessary to ensure that the instrument has a good working environment, especially for instruments that are prone to deposition and crystallization media, and the sewage work should be done to ensure the normal operation of the instrument. run. Fourth, in a low temperature environment, the intelligent pressure transmitter should be insulated and traced, and the working status of the tracer should be paid attention to in real time to avoid the phenomenon of tracer ignition. Fifth, instruments working in harsh environments such as acid and alkali should be given anti-corrosion isolation, and appropriate measurement accuracy should be selected in high-voltage environments to avoid failures. In addition, the intelligent pressure transmitter is protected against lightning by means of shielding, electrophoresis protection and other measures to avoid being damaged by lightning strikes.

In conclusion

The above is the relevant elaboration on the application and maintenance of intelligent pressure transmittersin oil fields. Intelligent pressure transmitters have the advantages of good performance, high measurement accuracy, safety and reliability, long service life, intelligence, etc., and are widely used in various industries. It plays an important role in the process and quality control of oilfields. The development of intelligent technology provides favorable technical conditions for the development of intelligent pressure transmitters. The application of intelligent technology further improves the performance of pressure measuring instruments, and with the update of technology and the continuous improvement of structural design, intelligent pressure changes. The performance of the transmitter will also be continuously optimized, and play a greater application value. The application of intelligent pressure transmitters has brought the development of oilfield automatic control technology to a new level. Under the background of the modern information age, oilfield automatic control technology is gradually developing in the direction of intelligence, networking and informatization. The improvement of intelligent automation technology will It has an important impact on the development of oilfield automation.

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