What should be included in the third-party testing of high and low temperature alternation boxes?

Many customers ask a question when purchasing high and low temperature alternating test: “Does your equipment contain third-party testing reports?” As the requirements of environmental testing become more stringent, users’ requirements for high and low temperature alternating test chambers are also Gradually increasing, today, Beijing Yashilin professional engineers will explain to you about the third-party testing of high and low temperature alternating test chambers.

Third-party testing, professionally speaking, is an authoritative test report issued by a state-approved metrology institution after passing the inspection and correctness of the machine. Third-party testing can be sent for inspection. It can also be sent to the factory for on-site inspection. It can be directly inspected by the commissioned manufacturer. The high and low temperature test chambers are shipped together with the test report, or the equipment can be sent to the user site. The third-party metrology agency conducts on-site testing.

The high and low temperature alternating test chamber measurement items are: temperature uniformity, temperature fluctuation, temperature deviation, temperature rise and fall rate, test accuracy, and the like.

Note: The measurement should be under no-load conditions. If there is load measurement, it should be stated in the test report that the measurement temperature point is a nine-point inspection instrument, which means that the average value is taken at nine points in the upper, lower and middle of the box. Then, select any point to take the fluctuation value. The distribution position can be adjusted according to the standard or according to the actual needs of the user. When the equipment volume is within 2 cubic meters, the temperature is 9 points. When the equipment volume is greater than 2 cubic meters, the temperature point is 15 One.

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