High-precision optical dissolved oxygen sensor calibration method and device

Abstract

The invention relates to the technical field of water dissolved gas sensor calibration, and aims at providing a high-precision optical dissolved oxygen sensor calibration method and device. The high-precision optical dissolved oxygen sensor calibration method comprises the following steps: sequentially introducing mixed gases with different oxygen contents into a water-gas mixer, so as to supply multiple dissolved oxygen concentration gradients to a water body; recording a signal value of a dissolved oxygen sensor to be calibrated and a temperature value of the water body, and testing a standard dissolved oxygen value of a water sample by using an iodometric method; calculating a calibration coefficient of the dissolved oxygen sensor to be calibrated. As a practical iodometric method measured value obtained after synchronous sampling is taken as the standard value, the reference value precision of the method is greatly improved when being compared with conventional methods that the concentration of dissolved oxygen in water bodies is calculated according to the water dissolution degree of the mixed gas oxygen concentration; as five temperatures are adopted for sensor calibration, the calibration result is relatively wide in temperature application range when being compared with those of the conventional methods.

Description

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AI Technical Summary

Benefits of technology

This new technology allows us to control how much we have absorbed or lost some amount of nitrogen (N) during production processes without affecting other things like nutrients. By controlling this process based on factors like pH levels, carbon dioxide concentrations, and specific gases released into our drinks, it provides an accurate way to measure these variables accurately while also being able to make many calibrated measurements at once.

Problems solved by technology

Technological Problem: Current Optically Soluble Oxygen Sensor Calibratable Method involves multiple steps involving different temperatures before measuring its concentration level or determining if there was any deviation from expected values due to changes caused by environmental factors such as pH levels. Additionally, current techniques involve comparing measurements taken after exposure to solutions containing specific chemical substances like nitrobenzene which may affect their effectiveness over longer periods of storage.

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