The high and low temperature test chamber has the law of temperature variation in the simulated atmospheric environment. Mainly for the electrical, electronic products, as well as its components and other materials in the high temperature, low temperature integrated environment transport, the adaptability test when used. Used in product design, improvement, identification and inspection. When purchasing high and low temperature test chambers, we should understand that there are two types of temperature control methods: fixed value control and program control. The controllers selected by the two control methods are different, and the price is also a big gap. The controller used in the Yashilin brand high and low temperature test chamber is the South Korea ternary SP190 meter, which can be used for constant value control. The control method is: set a target temperature, and the test box has the ability to automatically adjust the temperature to the target temperature point. The controller used in the Yashilin brand high and low temperature alternating test chamber is the Japanese excellent control instrument. It can be used for both fixed value control and program control. The program control has one or more programs for setting high and low temperature changes and cycles. It has the ability to complete the test process according to the preset curve, and can accurately control the rate of temperature rise and decrease in the range of maximum temperature rise and temperature drop rate capability, that is, the temperature rise and decrease rate can be controlled according to the slope of the set curve. Similarly, the high and low temperature alternating test chamber also has a preset temperature profile and the ability to control according to presets. The price of the alternating test chamber is generally 20% higher than the price of the constant test chamber. Therefore, we should use the constant test chamber or alternating test chamber based on the needs of the test method. Dining Chair,Dining Room Chairs,Dining Room Table Sets,Leather Dining Chairs Foshan Poesy Furniture Co., LTD. , https://www.poesyfurniture.com