Automatic calibration method of treatment machine for accurate liquid adding and constant volume

Abstract

The invention discloses an automatic calibration method of a liquid treatment machine for precise liquid adding and constant volume, and relates to the technical field of laboratory instruments. According to the invention, through organic combination of a movable liquid adding arm, an ultrasonic liquid level sensor and a metering pump, the ultrasonic liquid level sensor and the metering pump are automatically calibrated in a one-button mode, so that accurate liquid adding and constant volume of the liquid treatment machine are guaranteed, and the problems that the manual treatment process is repeated and tedious, efficiency is low, and errors and safety risks exist in operation are solved; and the ultrasonic liquid level sensor and the metering pump can be automatically calibrated under the unattended condition, so that the accuracy of subsequent liquid adding and constant volume is ensured, the process is standardized, programmed and automatic, the efficiency is high, the effect is good, and the monotonous, repeated, tedious and dangerous liquid adding experience is avoided.

Description

technical field [0001] The invention relates to the technical field of laboratory instruments, in particular to an automatic calibration method for a liquid processor for precise liquid addition and constant volume. Background technique [0002] The steps of liquid separation, pipetting and constant volume of the solution are the most basic experimental operation steps for chemical and biological detection and analysis in the laboratory. The accuracy of these steps directly determines the accuracy of the final experimental results. Liquid handling in most laboratories The operation is still manual or manual-assisted semi-automatic operation. Especially in the field of physical and chemical analysis and testing, such as environmental monitoring, food testing, mineral analysis and other fields, the sample volume is large, the volume of liquid separation and reagent addition often reaches tens of milliliters, and various corrosive reagents such as concentrated acid need to be p...

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Problems solved by technology

[0004]Aiming at the above-mentioned problems in the prior art, the object of the present invention is to provide an automatic calibration method for a liquid processing machine for precise liquid addition and constant volume. The organic combination of liquid arm, ultrasonic liquid level sensor and metering pump, one-button automatic calibration of ultrasonic liquid level sensor and metering pump, ensures accurate liquid filling and constant volume of the liquid processor, and solves the repetitive and cumbersome manual process, low efficiency, and difficult operation There are problems such as errors and safety risks

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