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Analysis of Failure Modes and the Reasons of Ultrasonic Heat Meter by Durability Test |
DU Wei-peng,CHEN Guo-fu,ZHAO Jian-liang |
Zhejiang Province Institute of Metrology, Hangzhou, Zhejiang 310013, China |
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Abstract Durability test of ultrasonic heat meter (UHM) were carried out, and 5 conditions causing UHM failure were found. Those conditions includes the invalidation of ultrasonic transducer, the measuring tube or ultrasonic reflector fixture made of plastic, calculator, sealing ring of tube, and the temperature sensor. The changes of data showed by UHM are analyzed, under the 5 failure modes mentioned above. The corresponding methods are pointed out to improve the durability of UHM.
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