Electromagnetic flow meter scale requirements for liquid conductivity

Abstract: the electromagnetic flow meter scale information by the excellent to the requirement of liquid conductivity meter, flow meter production factory to provide you with quotation. Using electromagnetic flowmeter is the premise of measured liquid must be conductive and not lower than the threshold ( The lower limit value) 。 Conductivity is lower than the threshold will produce direct measurement errors cannot be used, even change can be measured more than threshold, little change of error of indication, general. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the request of electromagnetic flow meter scale of liquid conductivity article details. Using electromagnetic flowmeter is the premise of measured liquid must be conductive and not lower than the threshold ( The lower limit value) 。 Conductivity is lower than the threshold will produce direct measurement errors cannot be used, even change can be measured more than threshold, little change of error of indication, universal threshold in 10 - electromagnetic flowmeter The 4 ~ ( 5 × 10 - 6) S/CM between, depending on the model. When using also depends on sensors and switches between flow line length and its distributed capacitance, usually in factory operating instructions conductivity signal corresponding to the length. Non-contact capacitance coupling large-area electrode conductivity meter can be test low ( 5 × 10 - 8) S/CM of the liquid. Industrial water and its aqueous solution, the electrical conductivity of more than 10 - 4 s/cm, acid, alkali, salt solution conductivity in 10 - 4 ~ 10 - 1 s/cm use there is no problem, low-grade distilled water for 10 - 5 s/cm is no problem. Petroleum products and organic solvent electricity rate is too low will not be able to use. From materials to some pure liquid or liquid conductivity is low, think you can't use, yet encountered in practical work contains impurities that can use an instance of the impurity is good for increasing electrical conductivity. In aqueous solution, the data of the electrical conductivity is to use pure water ratio measured in the laboratory, the actual use of aqueous solution may use ratio of industrial water, the conductivity will be higher than the check, and conducive to the flow measurement. And in the absence of readily available conductivity data, loading electromagnetic flowmeter can measure the liquid in the line with line sampling offline from the spot to laboratory to conductivity meter measuring the conductivity think it is available. This is because the measured liquid in the process of sampling offline already and have difference in the pipeline, such as liquid has been absorbed CO2 from the atmosphere or NO trace of generation x carbonic acid or nitric acid, changed the conductivity. According to the experience of the use, the actual application of the liquid conductivity zui better than instrument factory threshold stipulated by the at least one order of magnitude. Because factory instrument specifications stipulated by the lower limit value is used in a variety of conditions in low measurable zui, good condition is constrained by some conditions of use, such as electrical conductivity uniformity, connecting line, outside noise, etc. , can appear otherwise output shake wait for a phenomenon. We had met many times in measuring low distilled water or deionized water, its conductivity near threshold 5 & times; 10 - 6 s/cm, shaking when using the output. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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