The LH series LCD aging visual groove, developed and manufactured by Shanghai Experimental Instrument Factory Co., Ltd., is specifically designed for temperature aging processes in the production of industrial products. This equipment offers high-precision temperature control and a broad operating range, making it ideal for a variety of applications in quality assurance and product testing.
The product chamber features a unique bottomless design, allowing for easy loading and unloading of test samples. The internal and external surfaces are coated with cold-rolled steel, while the chamber is insulated using rigid polyurethane foam to ensure thermal efficiency. A top-mounted heating circulation system includes specially designed air ducts that enhance temperature uniformity across the entire workspace. To maximize usability, the chamber is equipped with two groups of front and rear doors—each group consisting of four levels. The A-type model features a central opening at the front, while the B-type model allows for left-to-right movement. The viewing window provides excellent visibility, enabling real-time monitoring of the testing process.
The temperature control system utilizes advanced foreign-made controllers, offering reliable PID adjustment for precise and stable temperature regulation. In addition, the unit is equipped with multiple safety protection mechanisms, including overload and short-circuit protection, leakage detection, temperature overshoot prevention, heater disconnection protection, motor overload and phase loss protection, over-temperature shutdown, and a four-color sound and light alarm system. These features ensure the safe and stable operation of the equipment during extended testing periods.
The LH series has been rigorously tested by the Shanghai Testing Technology Research Institute and the Environmental Testing Equipment Quality Supervision and Inspection Center. Its performance fully complies with the IEC 540 standard, "Verification Method for Basic Parameters of Environmental Testing Equipment for Electrical and Electronic Products – Aging Test Equipment." As one of the largest aging test devices in China, this equipment fills a critical gap in domestic LCD manufacturing capabilities. It provides an efficient, reliable, and cost-effective solution to enhance the production capacity and quality of liquid crystal displays in the country.
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