The low temperature test of the periscope is divided into low temperature storage test and low temperature work test. What are the test conditions? According to the standard GB1214, the following ones are listed for you:
Low temperature storage test
1, test temperature selection
The test temperature of the low temperature test chamber is -30 °C, -40 °C; the two storage temperature selection principles are: a, -30 °C is suitable for ordinary warehouses in most areas north of the Yangtze River in China. There is no temperature and humidity control in the warehouse, but there are heating equipment to ensure the specified temperature conditions; b, -40 °C is suitable for the general warehouse near the frozen port in the world; c, if the warehouse conditions are good, there is temperature and humidity Control, storage temperature can be independent of the above temperature conditions.
2. Selection of test time: 2h, 4h. The general warehouse is built in a cold climate area, with a long storage time (more than 2 years), 4h is selected, and the rest is 2h.
Low temperature test chamber test conditions: Low temperature work test: The test temperature is selected to be -30 ° C, -40 ° C two temperatures, the two temperature selection principle is: according to the climatic conditions of the active area of ​​the product equipment or the product deployment area determine. The general activity area is -30 °C in the micro-cold and basic cold areas; the active area is in the basic cold and cold area or the coastal marine area of ​​the non-freezing port in the world, choose -40 °C.
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