Yashilin explains that the low and low temperature test chambers are slow to slow down

Recently, I received a phone call from a customer. It is only necessary to cool down for 20 minutes. How can I use it for 60 minutes? I asked the customer to do a 0°C test, which is reduced from 20°C to 0°C, which is 20 minutes according to normal conditions. It can be lowered, the normal cooling rate is 0.7 ° C ~ 1 ° C / min. There are several factors that can cause the test chamber to cool slowly:

1. The thermal load of the studio is too large, the fan does not turn, the door is not closed (leakage)

2. Part of the solid state relay breakdown (such as heating with 2 solid state relays, 1 breakdown) causes a part of the heating tube to heat up, offsetting part of the cooling capacity, resulting in a slow cooling artifact.

3. The test specimens in the test chamber are piled up too much (normally, they do not exceed one-third of the total volume of the inner tank), resulting in the wind not being able to circulate and the temperature fluctuating.

More constant temperature and humidity test chambers, high and low temperature test chambers, high and low temperature alternating test chambers, high and low temperature alternating heat and humidity test chambers, please visit the official website of Beijing Yashilin Testing Equipment Co., Ltd.