High and low temperature test chamber product features explain
The high and low temperature test chamber is one of the most widely used environmental testing devices, designed to simulate extreme thermal conditions for product reliability evaluation. It includes various models such as the high-low temperature cycling chamber, constant temperature and humidity chamber, and high-low temperature wet heat cycling chamber. While these chambers serve different purposes, their core function revolves around precise temperature control, with similar operational principles across the series. In this article, we'll focus on the high and low temperature test chamber to explore how it achieves accurate and efficient temperature regulation.
To reach both high and low temperatures, the chamber employs a dual-mode system. For heating, it uses an independent electric heating system featuring high-speed infrared nickel-chromium alloy heating elements. This setup ensures rapid and even heat distribution. The temperature control is managed by a PID (Proportional-Integral-Derivative) + SSR (Solid State Relay) system, which allows microcomputer-based power calculation for high precision and energy efficiency. To enhance performance, more heating elements can be added, and advanced software algorithms are used to optimize response times and stability.
For cooling, the chamber relies on a French-made Taikang fully enclosed compressor paired with a freon refrigeration unit. The refrigeration process follows an inverse Carnot cycle, involving adiabatic compression and heat exchange. This cycle enables consistent and reliable cooling, especially during long-term operations. The system also utilizes balanced temperature adjustment (BTC), where the heater output is dynamically adjusted based on PID calculations to maintain a stable environment.
The chamber's inner lining is crafted from high-quality SUS304 stainless steel, offering durability and resistance to corrosion. The outer casing is finished with a spray coating for aesthetic appeal. A special low-noise fan motor and multi-wing impeller ensure efficient air circulation, promoting uniform temperature distribution throughout the chamber.
A double-layer high-temperature resistant sealing strip is installed between the door and the chamber body to maintain airtightness. The handle is ergonomically designed for easy access, while the base features durable PU casters for mobility. The observation window is made of multi-layer tempered glass with a conductive film for defrosting, allowing clear visibility without compromising insulation.
The test chamber includes a dedicated test hole on the left side for connecting external cables or signals. Its refrigeration system employs a cascade design, with high-quality imported components like spiral copper tubes, evaporators, and filters ensuring long-term reliability. The heating and cooling systems operate independently, minimizing cross-interference.
Equipped with a far-infrared heating element, the chamber provides fast and precise temperature control. The temperature and humidity control system is managed by a programmable microcomputer with a large LCD touchscreen, supporting both Chinese and English interfaces. Real-time operation curves are displayed, and the controller offers 100 programs, each with up to 999 steps, allowing for complex test sequences.
The chamber also supports network connectivity, enabling remote program design and monitoring via a computer. It features an automatic screen saver to protect the display during extended use. Additionally, an automatic defrost system is integrated into the return air outlet for maintenance convenience.
For more detailed information about high and low temperature alternating test chambers, visit: http://example.com
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