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. Let's take a look together, what are the measurement items and calculation methods of the high and low temperature test chamber? The following are the schemes of the high and low temperature test chamber metering project. The high and low temperature test chamber metering characteristics mainly include: temperature deviation, temperature fluctuation, and temperature uniformity.
1. Temperature uniformity: the test equipment is in a stable state, and the difference between the test points at a certain time in the working space (defined as: the temperature difference between the points);
2. Temperature fluctuation: when the test equipment is in a stable state, the parameter of the center point of the working space changes with time (defined as: the jitter value of a point);
3. Temperature deviation: Under the stable state, the measured maximum and minimum measured values ​​of the measuring points in the working space deviate from the nominal value.
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 use range of the constant temperature and humidity machine; 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.
In order to protect the true rights and interests of customers, the linpin brand high and low temperature test chamber can provide users with a third-party quality inspection certificate "Shanghai Precision Measurement and Testing Institute".
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