Temperature calibration equipment for improving uniformity of temperature field

Abstract

The invention discloses temperature calibration equipment for improving temperature field uniformity, which comprises a heat insulation box and an assembly line for conveying and calibrating a temperature sensor to be calibrated, and is characterized in that the assembly line comprises a conveying belt for conveying the temperature sensor to be calibrated, a calibration cavity for calibrating the temperature sensor to be calibrated and a heat conduction pipe surrounding the conveying belt; the heat insulation box is provided with an inlet and an outlet for the conveying belt to penetrate through, the heat conduction pipe and the calibration cavity are both installed in the heat insulation box, and the conveying belt passes through the calibration cavity when conveyed in the heat conduction pipe. Fluid flowing outside the heat conduction pipe is arranged in the heat insulation box, the fluid is gas or liquid, the fluid is contained in a fluid cavity in the heat insulation box, and the fluid cavity can be a box body or a pipe body. The hollow heat conduction pipe is used for providing a temperature environment with a relatively uniform temperature field required by temperature calibration, batch calibration of temperature sensors is facilitated, and the temperature calibration device has the advantages of being high in universality, accurate in calibration data, high in calibration speed and the like.

Description

technical field [0001] The invention relates to the technical field of temperature calibration, in particular to temperature calibration equipment for improving the uniformity of the temperature field. Background technique [0002] The measurement accuracy of the temperature sensor is affected by many factors such as manufacturing process deviation and packaging. In order to meet the accuracy design requirements of the sensor, the temperature sensor must be calibrated. [0003] During the calibration process of the existing temperature sensor calibration system, due to the temperature environment, the temperature measurement probe of the temperature measuring instrument is difficult to be in the same temperature field as the temperature sensor to be calibrated, so the detected temperature points are different, which eventually leads to insufficient calibration data. Accurate, large error. In many cases, the temperature sensor chip and the temperature measurement probe to be...

AI Technical Summary

Problems solved by technology

[0003] During the calibration process of the existing temperature sensor calibration system, due to the temperature environment, the temperature measurement probe of the temperature measuring instrument is difficult to be in the same temperature field as the temperature sensor to be calibrated, so the detected temperature points are different, which eventually leads to insufficient calibration data. Accurate, big error

In many cases, the temperature sensor chip and the temperature measurement probe to be calibrated are required to be immersed in a liquid environment. Not only the calibration time is long and the process is complicated, but also the temperature sensor chip needs to be cleaned after calibration, which is very unsuitable for mass production.

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