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我厂长网纸机采用veriflux电磁流量计.该流量计具有反应快、测量范围广,流量与刻度成线性关系,压力损失小等优点. 众所周知,安装电磁流量计应使变送器的测量导管内始终充满被测介质,因此要求变送器安装在U型管道的最低部位。我厂由于安装环境的限制,只能装在提浆泵的出口处,纸机停机时,变送器测量导管内无静态液体,两个测量电极暴露在大气中。这时由于:①外界磁场的作用,会产生很大的干扰正交电势;②电源电压及频率的波动也会产生一定的干扰电
My director net paper machine uses veriflux electromagnetic flowmeter.This flowmeter has the advantages of fast response, wide measurement range, linear relationship between flow and scale, pressure loss, etc. It is well known that the installation of electromagnetic flowmeter should make the transmitter measurement catheter Always filled with the measured medium, so the transmitter is required to install the lowest part of the U-shaped pipe. I plant due to the installation of environmental constraints, can only be installed in the pulp pump outlet, the paper machine downtime, the transmitter no static liquid measurement catheter, the two measuring electrodes exposed to the atmosphere. At this time due to: ① the role of the external magnetic field, will have a great interference quadrature potential; ② power supply voltage and frequency fluctuations will have some interference