Temperature change rate of high and low temperature alternating thermal test chamber

High and low temperature alternating test chamber is used for high and low temperature reliability test of industrial products. For parts and materials of electronic electrician, auto motorcycle, aerospace, marine weapons, universities, research institutes and other related products, test their performance indicators under the conditions of high and low temperature ( alternating ) cyclic changes.

The normal high-low temperature test box has no indication of the cooling rate. The time from the ambient temperature drop to the nominal minimum temperature is generally 90 to 120 minutes . Both the high and low temperature alternating temperature test box and the high and low temperature alternating humidity and humidity test box have the requirements of variable temperature speed. The temperature change rate is generally required to be 1 °C /min , and the speed is adjustable within this speed range. The temperature change rate of the high and low temperature test chamber is faster, and the temperature increase and decrease rate can reach 3 °C /min to 15 °C /min . The temperature rise and temperature drop rate can reach 30 °C /min or more in some temperature zones.

The temperature range of high and low temperature test chambers of various specifications and speeds are generally the same, ie, -60 to +130 °C, but the range of variable temperature for assessing the cooling rate is not the same. According to the test requirements of different tests, the high and low temperature test chambers The temperature range is -55 to +80 °C, and some are -40 to +80 °C.

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