Analysis of Liquid Conductivity of Electromagnetic Flow Meter

Abstract: The liquid conductivity analysis information of electromagnetic flowmeters is provided by excellent flowmeter and flowmeter manufacturers. We all know that the premise of using electromagnetic flowmeter capacitive liquid level gauge is that the liquid to be measured must be conductive and cannot be lower than the threshold (ie lower limit). Conductivity below the threshold will cause measurement errors until it can not be used, and the level can be changed even if the conductivity exceeds the threshold. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the liquid conductivity analysis article of electromagnetic flowmeters. We all know that the premise of using electromagnetic flowmeter capacitive liquid level gauge is that the liquid to be measured must be conductive and cannot be lower than the threshold (ie lower limit). If the conductivity is lower than the threshold value, measurement error will occur until it can not be used. If the conductivity exceeds the threshold value, even if it changes, it can be measured by the liquid level transmission. The indication error does not change much.×10-6) between S/cm, depending on the model. The use also depends on the length of the flow signal line between the sensor and the converter and its distributed capacitance. The manufacturer's instruction manual usually specifies the length of the signal line corresponding to the conductivity. Meters with non-contact capacitively coupled large-area electrodes can measure conductivity as low as 5×10-8S/cm liquid. The level switch conductivity of industrial water and its aqueous solution is greater than 10-4S/cm, and the conductivity of acid, alkali, and salt solution is between 10-4 and 10-1-1S/cm. There is no problem in use. Low-grade distilled water There is no problem with 10-5S/cm. Petroleum products and organic solvents are too low in conductivity to be used. Table 1 lists the conductivity of several liquids. It is found from the data that some pure liquids or aqueous solutions have low conductivity and are considered unusable. However, in practical work, there will be instances where they can be used because they contain impurities. Such impurities are beneficial to increase the conductivity. For the aqueous solution, the conductivity in the data is measured in the laboratory with pure water. The actual aqueous solution may be proportioned with industrial water, and the conductivity will be higher than that found, which is also beneficial for flow measurement. There is also a liquid that cannot be measured by the electromagnetic flowmeter installed on the pipeline in the absence of ready-made conductivity data, but it is considered usable by taking samples from the field pipeline and going offline to the laboratory to measure its conductivity with a conductivity meter. This is because in the offline process of sampling, the measured liquid has been different from that in the pipeline; for example, the liquid has absorbed CO2 or NOx in the atmosphere to generate a trace amount of carbonic acid or nitric acid, which has changed the conductivity. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Analysis of Liquid Conductivity of Electromagnetic Flow Meters'
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