often has a customer to ask us: We ask for high temperature testing, but also high and low temperature cycle test, then I purchase a high and low temperature test chamber Can you use high temperature testing?
High and low temperature test chamber basic parameters:
Test temperature range: -40 ° C / -70 ° C ~ 150 ° C function: high temperature, low temperature simulation test.
High temperature test chamber (high temperature oven) basic parameters:
function: high temperature Aging test.
From the basic parameters, it can be seen that if high temperature tests above 150 ° C, the high and low temperature test chamber can not be replaced by high temperature test chambers. If the high-temperature aging test of 150 ° C is performed, the high and low temperature and humid test chamber can satisfy this test requirement, but in fact, high and low temperature and humidity test chamber is not suitable for long
1. Since the high and low temperature test chamber evaporator part is integrated in the test box region, the high temperature test of 150 degrees for a long time may cause an excessive pressure inside the evaporator. Compressor failure. (High temperature test chamber without refrigeration system) 2, the heat preservation material of the high and low temperature test chamber is usually from polyurethane foaming, and the high temperature resistance of polyurethane foam is not too good, and the usual polyurethane foaming temperature can only be 120. At ° C, even if we use German Bayer's foam, high temperature can only be 150 ° C, and there will be affected 150 ° C for a long time. Unless it is a cheap glass fiber, it is a glass cotton, but the insulation of this material is poor. (High temperature test chamber is used in glass fiber)
3, the high and low temperature test chamber is used in silica gel seals, which is not suitable for long-term high temperature tests, otherwise aging and damage to the acceleration. (The high temperature test chamber is the asbestos seal)
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