Two-way electrical conductivity detecting and monitoring device with symmetrical lead self-compensation and detecting and monitoring method using same

Abstract

The invention discloses a two-way electrical conductivity detecting and monitoring method with symmetrical lead self-compensation and a detecting, based on a two-way electrical conductivity detecting and monitoring device with symmetrical lead self-compensation and a detecting. The device disclosed by the invention comprises a liquid crystal touch screen, a display window, an operation button, an indicating lamp, a mother board, a display panel and a power supply board, wherein the mother board is respectively and electrically connected with the display panel and the power supply board. When the device is in use, a precision internal electric conducting meter is established through an internal standard resistance array circuit; the current electric conducting voltage is measured by a measuring circuit; the electric conducting voltage is subjected to table-loop-up and interpolation through the internal electric conducting meter to obtain an electric conducting value; the electric conducting value is subjected to lead resistance compensation, temperature compensation, capacitance compensation and electrode constant correction to obtain a corresponding standard electric conductivity; and finally, the standard electric conductivity is subjected to table-look-up and interpolation according to a concentration electric conductivity meter to solve the concentration of a solution to be measured. The device and method have the advantages of high measuring precision, high work reliability, convenience in operation, high automatic degree, high intelligent degree, convenience in manufacture and convenience and low construction cost.

Description

technical field [0001] The invention belongs to the field of on-line detection of chemical process parameters, and relates to an on-line indirect detection device and method for micro-sugar content in a sugar factory, in particular to a dual-channel conductivity detection and monitoring device and method with self-compensation of symmetrical wires. Background technique [0002] In the chemical reaction process, the conductivity is an important parameter of the solution, its size directly reflects the conductivity of the solution, and is closely related to the concentration of the electrolyte; the concentration of organic matter can also be converted into conductive substances through appropriate reactors, and then Measure the change in conductivity before and after the reaction, and then calculate its concentration; in addition, there is a type of semi-electrolyte whose concentration is also closely related to conductivity under high-frequency excitation; these are carried ou...

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Problems solved by technology

[0002] In the chemical reaction process, the conductivity is an important parameter of the solution, its size directly reflects the conductivity of the solution, and is closely related to the concentration of the electrolyte; the concentration of organic matter can also be converted into conductive substances through appropriate reactors, and then Measure the change in conductivity before and after the reaction, and then calculate its concentration; in addition, there is a type of semi-electrolyte whose concentration is also closely related to conductivity under high-frequency excitation; these are carried out with conductivity as an intermediate variable. For other parameter detection occasions, a stable and accurate conductivity detection device is required. At present, the conductivity detection devices produced by domestic manufacturers generally use a resistance box to manually verify the conductivity device, which is cumbersome to use and has a low degree of automation; Or the influence of wires on conductivity detection is not considered, which seriously affects the self-calibration accuracy and detection accuracy, especially in the case of high-frequency excitation; most of the equipment imported from abroad is expensive and difficult to maintain

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