With the rapid development of modern industrial technology, the application fields of electrical and electronic products are becoming increasingly broad, and the environmental conditions they experience are becoming more and more complex and diverse. Only by reasonably stipulating the environmental conditions of the product and correctly selecting the environmental protection measures for the product can we ensure that the product is protected from damage during storage and transportation and is safe and reliable during use. Therefore, artificial simulated environment testing of electrical and electronic products is an indispensable and important link to ensure their high quality. Artificial simulated environmental tests are scientific summaries of actual environmental impacts and are typical, standardized, easy to use, and easy to compare. The diversification of environmental conditions and the importance of environmental testing also put forward more stringent requirements for environmental testing equipment.
The constant temperature and humidity test chamber can be used to assess and determine the adaptability of electrical and electronic products or materials for storage and use under environmental conditions of temperature and humidity. The equipment uses air circulation to maintain the uniformity of temperature and humidity in the working room. The test The test sample will not be exposed to direct radiation from the heating and cooling elements within the equipment.
Structural design
The outer casing of the constant temperature and humidity testing equipment is made of high-quality steel plates with plastic spray treatment on the surface. It has an arc design and smooth and natural lines. The inner tank is made of high-quality stainless steel plate, which can constantly control the test temperature difference ℃. The indoor sample rack and other accessories are made of stainless steel. The insulation material of the equipment pair is high-density fiberglass wool, and a transparent window is set on the door to observe changes in the indoor sample. The observation window is made of multi-layer hollow tempered glass.
The humidity adopts stainless steel boiler steam humidification method, high-precision humidification cloth induction, fast response and accurate control. The mixing system uses a long-axis fan motor to make the temperature and humidity in the laboratory uniform and stable. A double-layer high-temperature-resistant high-tensile sealing strip is used between the door and the box. The test hole (on the left side of the machine) can be used to connect external test power lines or signal lines (the hole diameter or number of holes can be according to customer instructions). High-quality fixed movable wheels are installed at the bottom of the machine, which can easily move the machine to a designated location and finally fix the casters.
Control system
Constant temperature and humidity test equipment generally uses liquid crystal display programmable temperature controllers imported from Korea or temperature and humidity control instruments and temperature and humidity comparison tables imported from Japan, intelligent high-precision digital display D microcomputer temperature control instruments , membrane buttons, touch settings, digital and direct display, humidity directly displays the percentage, and the temperature sensor uses a platinum resistance tester. Temperature control adopts thermal balance temperature regulation method. The LCD programmable temperature controller imported from South Korea can be used for program testing. It can have multiple groups of multi-stage programming operations, optional fixed values and programs, and the function of setting the time arbitrarily. The temperature and humidity comparison table displays the temperature directly, the humidity refers to the parameter setting of the temperature and humidity comparison table, and the temperature is compared with the humidity. The main electrical components of the equipment, such as circuit breakers, AC contactors, and small relays, are all of Schneider brand, and other electrical accessories are of well-known domestic brands.
Heating and humidification system
Heating uses far-infrared nickel-chromium alloy high-speed heating electric heating wire. The high temperature is a completely independent system. Humidity uses stainless steel tubes with built-in nickel-chromium alloy high-speed heating electric heating wire and high-temperature magnesium oxide powder. The response is fast. long life. The heating and humidification systems are completely independent, and the humidity has an automatic water replenishing device.
Main technical parameters
Model: H type
Working room size (depth, width and height)
Overall dimensions (depth, width and height)
Temperature range R+℃～℃
/> Temperature uniformity ℃ (no load)
Temperature fluctuation: .℃ (no load)
Temperature deviation: ℃
Humidity range %～% RH (temperature in ℃～℃ between)
Humidity deviation +～% RH
Power
Time setting range～. hours
TEMI300 constant heat and humidity test chamber with excellent quality and low price