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

Water-in-oil monitoring as a method of short wave absorption has been widely applied in the petroleum, chemical and shipping industries. 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 involve: improving the zeroing circuit to achieve an acceptable range of autozeroing 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. Copyright © 2014 IFSA Publishing, S. L.