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The high and low temperature test box is mainly used to detect whether the product is resistant to high temperature, low temperature or constant test. At present, there are many manufacturers of high and low temperature test chambers, and various brands are mixed. In order to protect the true rights and interests of customers, the high and low temperature test chambers produced can provide users with proof of testing by third-party testing institutions.
1. Measurement items, methods and calculations of the high and low temperature test chamber
A. Measurement characteristics of high and low temperature test chamber: temperature and humidity deviation, temperature and humidity fluctuation, temperature and humidity uniformity
B. Explanation of related terms of high and low temperature test box: a. Uniformity: the difference between the test points (temperature and humidity) of the working space at a certain moment in the environment of the test equipment in a stable state. (Simple definition: temperature difference between points) b. Fluctuation: the amount of change of the parameter of the center point of the working space with time under stable conditions of the environmental testing equipment. (Simply defined as: the beating value of a point) c. Deviation: Under the steady state of the equipment, the measured maximum value and measured minimum value of each measurement point in the working space deviate from the nominal value.
C. Measurement method of high and low temperature test chamber:
1. The measurement is carried out under no-load conditions. If there is a load, the load should be stated in the certificate.
2. The measurement of turbidity and humidity points should generally select the upper limit, lower limit and center point of the equipment's use range, and the actual commonly used temperature and humidity points can also be selected according to user needs
3. Location of measuring points: when the equipment volume is less than 2m3, there are 9 temperature points, 3 humidity points, the equipment volume is greater than 2m3, 15 temperature points, and 4 temperature points.
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Huayao Master (Puyang) Automation Equipment Co., Ltd. , https://www.huayaomaster.com