Mr. Jing Zhang Profile

Jing Zhang

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Proceedings Article | 4 March 2024 Paper

Design of a temperature and humidity calibration device for cold chain warehousing and transportation

Qiuquan Zhang, Sijun Huang, Li Feng, Jing Zhang, Tingting Ren

Proceedings Volume 12981, 129812D (2024) https://doi.org/10.1117/12.3015006

KEYWORDS: Humidity, Calibration, Temperature metrology, Transportation, Design, Air temperature, Relative humidity, Control systems, Equipment

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Cold chain transportation and storage equipment are widely used in logistics industry, scientific research institutions, and medical and pharmaceutical industries. According to GB/T 28577-2021 Classification and basic requirement for cold chain logistics, the cold chain facilities and equipment should be equipped with temperature and humidity recorders to continuously monitor the environmental conditions of cold chain. Therefore, thermometers and hygrothermographs are widely used in cold chain warehousing and transportation to monitor the temperature and humidity. However, there is no calibration equipment especially designed for thermometers and hygrothermographs used for cold chain storage and transportation monitoring at present. And with the fast development of cold chain monitoring, the requirements of accuracy for thermometers and hygrothermographs are becoming higher and higher, and the currently used calibration devices are gradually becoming unable to meet the requirements of both measurement range and accuracy. This article presents a novel design of temperature and humidity calibration device for cold chain warehousing and transportation. The temperature measurement range of the calibration device is (-40~60) ℃, and the humidity measurement range of the device is (20~95)% RH. The temperature uniformity of the device is not more than 0.3 ℃, the temperature fluctuation of the device is not more than ± 0.2 ℃, the humidity uniformity of the device is not more than 1.0% RH, and the humidity fluctuation of the device is not more than ± 0.8% RH. The experimental verification results show that the designed device can meet the requirements of temperature and humidity calibration for cold chain warehousing and transportation with efficiency and accuracy.

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