A differential high-precision liquid level detection method for quantitative concentration

Abstract

The invention provides a differential type high-precision liquid level detection method used for quantitative concentration, and belongs to the field of tests. A first liquid level detection sensor and a second liquid level detection sensor are arranged to form a differential type double-sensor set. The position of the to-be-detected liquid level in a constant-volume pipe is detected according to the light refraction principle. The transmitting terminals and the receiving terminals of the first liquid level detection sensor and the second liquid level detection sensor are all arranged on a sensor supporting plate. The sensor supporting plate is fixedly connected to a lifting mechanism used for driving the sensor supporting plate to move up and down in the longitudinal direction. Different liquid levels in the constant-volume pipe are detected through the vertical movement of the first liquid level detection sensor and the second liquid level detection sensor. According to the technical scheme, the position of the to-be-detected liquid levels in the constant-volume pipe is detected through the differential type double-sensor set, and therefore the problem that the detection accuracy of the transparent liquid level detection sensors is low when the light emitting beam is large is solved, and the small-volume and high-precision constant-volume detection operation is achieved. The differential type high-precision liquid level detection method is suitable for the field of high-precision liquid level detection in the quantitative condensation process in pretreatment of chemical samples.

Description

technical field [0001] The invention belongs to the field of chemical analysis or testing, in particular to a liquid level detection method for quantitative concentration. Background technique [0002] Analytical chemistry is a science that studies the analytical methods and theories of chemical information such as the composition, content, structure and form of substances. When analyzing a sample, it is generally necessary to try to separate the different components. [0003] Chemical pretreatment is the pretreatment process for separating different components of the analysis sample, or removing interfering components, or changing its state for convenient measurement, etc., mainly including sample extraction, purification, enrichment, derivatization, etc. [0004] In the process of chemical sample pretreatment, quantitative concentration is often used to increase the sample concentration, but for the convenience of subsequent analysis, the sample volume needs a specific va...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a differential high-precision liquid level detection method for quantitative concentration, which uses two pairs of liquid level detection sensors composed of a transmitter and a receiver to form a differential dual sensor to solve The detection accuracy of the transparent liquid level detection sensor is not high due to the large light beam, and a differential high-precision liquid level test method for transparent liquids is realized; it can reduce human errors and labor intensity, and improve the accuracy of experimental results. Therefore, the efficiency is improved; and the judgment of the critical surface adopts logical interlocking, which improves the accuracy of the experimental results

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