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针对微机电量变送器的特点提出了故障自诊断的原则和方法。实际应用表明，运用文章介绍的技术可以诊断出微机电量变送器大多数故障，提高微机电量变送器的可靠性和检测结果的可信度。
Aiming at the characteristics of microcomputer electric quantity transmitter, the principle and method of fault self-diagnosis are put forward. The practical application shows that using the technique introduced in the article can diagnose most of the faults in the microcomputer power transmitter and improve the reliability of the microcomputer power transmitter and the credibility of the test result.