How to calibrate the high and low temperature test box on site
The high and low temperature test chamber is used to detect the test workpiece under high and low temperature (alternating) cycle changes, and to check its various performance indicators. It is one of the necessary test equipment in the laboratory. During the period of rapid development, the number of high- and low-temperature test chamber companies continues to increase, and many companies with a "fishing" mentality have put on the brand of environmental testing equipment manufacturers. In order to protect the true rights and interests of customers, the high and low temperature test chambers produced by Yashilin can provide users with a third-party authoritative organization calibration certificate to ensure the quality and brand persuasion of Yashilin test chambers.
1. Measurement characteristics of high and low temperature test chamber: temperature uniformity, temperature fluctuation, temperature deviation
2. Explanation of relative terms of high and low temperature test chamber:
Temperature uniformity: the difference between the test points (temperatures) at a certain moment in the working space of the environmental test equipment in a stable state. (Simple definition: temperature difference between points)
Temperature fluctuation: the amount of change of the parameter of the center point of the working space with time under the stable state of the environmental test equipment. (Simplely defined as: the beating value of a point)
Temperature 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.
3. Measurement method of high and low temperature test box:
1. The measurement is carried out under no-load conditions. If there is a load, the load should be stated in the calibration report.
2. The measurement temperature point 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 point 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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