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C：电导率电磁流量计电导率超过阈值即使变化亦不影响测量值，但低于阈值会产生测量误差。闽值视各制造厂不同型号而异，使用时还取决于传感器和转换器之间流量信号线长度及其分布的电容值，尽量降低电导率阈值以扩展电磁流量计的使用范围是重要的研究课题。d：流体物性为压力?
C: Conductivity Electromagnetic flowmeter Conductivity exceeds the threshold Even if the change does not affect the measurement, but below the threshold will result in measurement error. The threshold depends on the different models of the manufacturing plant. It depends on the length of the flow signal line and the capacitance of the distribution between the sensor and the converter. It is important to reduce the conductivity threshold as far as possible to extend the use range of the electromagnetic flowmeter Question. d: fluid properties for the pressure?