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介绍了一种能自动监测工业生产中溶液成分和浓度的电导测量仪，它采用交流不平衡电桥工作原理，并以微处理机作为系统的核心器件，具有温度补偿、多路信号输入、连续记录、报警输出功能和较高的灵活性和先进性。该仪器既可以有线性输出又可以有非线型输出，整个系统结构简单、紧凑。经过在大庆石油化工总厂化肥厂的实际运行表明：ＤＤ１型电导测量仪设计合理，使用方便，工作可靠，测量精度达±１％，达到了预期设计指标和效果
A kind of conductivity measuring instrument which can automatically monitor the composition and concentration of solution in industrial production is introduced. It adopts the working principle of AC unbalanced bridge and uses microprocessor as the core device of the system. It has the functions of temperature compensation, multi-channel signal input, continuous Record, alarm output function and high flexibility and advanced. The instrument can have both linear output and non-linear output, the entire system structure is simple and compact. After the actual operation of Daqing Petrochemical Plant fertilizer plant shows: DD1-type conductivity meter designed, easy to use, reliable, measurement accuracy of ± 1%, to achieve the desired design indicators and results