1.Volume Selection When the tested product (components, components, parts or complete machine) is placed in the climate environment chamber for testing, in order to ensure that the tested product The ambient atmosphere can meet the environmental test conditions specified in the test specifications. The following provisions shall be followed between the working dimension of the …
1.Test Overview The impact experienced by the products during use and transportation is mainly due to the impact caused by the emergency braking and impact of vehicles, the air drop and crash of aircraft (emergency landing), the launch of artillery, the explosion of chemical energy and nuclear energy, the ignition separation and re-entry of missiles …
When satellites, space probes and other spacecraft are operating in space, they are in a thermal vacuum environment of high vacuum, cold black and solar radiation. Vacuum thermal environment simulation test is a very effective ground test method to simulate the vacuum thermal environment (high vacuum, cold black, solar radiation, high temperature and other environments) …
1.Low Air Pressure Environment Due to the gravity of the earth, the air has a certain weight to form atmospheric pressure. The atmospheric pressure at a certain height is the heaviest of the entire air column on the unit area perpendicular to the ground above the point. With the increase of height, the air …
1.Overview High and Low Temperature Humidity Test Chamber is a kind of equipment that can be used for the reliability test of lithium batteries, small electronic products, electronic components and materials, or for the climate test of other products. The temperature adjustment range of high and low temperature damp heat laboratory is generally +60 ℃ …
High and low temperature damp heat test chamber is the most sold product in the test equipment at present. In the market, the temperature and humidity of this kind of test chamber are constant. Most of them adopt thermal control, that is, the heat of the heater offsets the cold volume of the evaporator to …
The reliability of electronic products is affected by many factors. In addition to human operation, the environment in which the products are located is also an important reason for their work failure. Among them, temperature, humidity and vibration are the three main environmental factors that have the greatest impact on the product equipment. This paper …
3.3 Test Requirements and Methods (1) During the temperature test, the temperature change speed between each temperature step shall not exceed 20 ℃ /h. During the test, the relevant test can be carried out only after the tested instrument reaches the temperature stable state as far as possible. (2) During the high and low temperature …
At present, electronic instruments are used in military, civil and high-tech fields. However, the low temperature environment exists in most of its service environments. Therefore, the adaptability of electronic instruments at low temperature is directly related to their quality. Based on this, this paper analyzes the low temperature environmental effects and low temperature test technology …
A rapid temperature change rate test chamber is a thermal cycling chamber designed to increase the repeatability of thermal shock testing. Due to the increasing number of issues that affect the reliability of electronic devices, circuit boards, and their reliability, it is necessary to have a better-suited method of evaluating them. Rapid Temperature Change rate …