An Improvement Approach for a Short Wave Absorption Type Water-inoil Sensor

ABSTRACT

Water-in-oil monitoring has been widely applied in the petroleum, chemical and shipping industries as a method of short wave absorption. However, due to enhancements in equipment precision and efficiency, more demands are being made on oil products. In order to meet these needs, it is insufficient to merely rely on improving the design of secondary instruments. Based on a wide range of practices, this paper proposes effective modifications to the transmitter itself in order to solve problems in equipment debugging and operation. These modifications include: improving the zeroing circuit to achieve an acceptable range of auto-zeroing and enhance the debugging efficiency; altering the true and false load method to achieve a differential calculation in a real sense; and changing the instrument structure to realize the integrated design and solve the problem of common-mode interference in the transmission of original signals.

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