How does the high and low temperature test chamber realize the conversion between high temperature and low temperature?

The high and low temperature test chamber is suitable for high temperature and low temperature reliability tests of industrial products. Test various performance indicators for parts and materials of related products such as electronics and electricians, automobiles, motorcycles, aerospace, marine weapons, colleges and universities, scientific research institutions, etc., under the condition of high temperature and low temperature (alternating) cycle changes.

The high and low temperature test box is the temperature test equipment seen in the environmental test equipment. The low temperature impact test box and its similar related products include high and low temperature alternating test boxes, constant temperature and humidity test boxes, high and low temperature humidity and heat alternating test boxes, and so on. When it comes to temperature, there are high and low temperatures. High temperature control is a heating process, and the control is relatively simple. The heating of the high and low temperature test box adopts an independent heating method, and the far-infrared nickel-chromium alloy high-speed heating electric heating wire, the temperature control adopts the P·I·D+S·S·R system coordinated control on the same channel, and the output power is calculated by the microcomputer. In order to achieve high-precision and high-efficiency electricity benefits. In order to achieve a rapid heating rate and high temperature, the low temperature test box generally increases the number of heating wires and improves the control performance of the temperature control software. The refrigeration system of the high and low temperature test chamber adopts the unit freon refrigeration system composed of the French-made Taikang hermetic compressor. The working principle of refrigeration is to adopt the reverse Karuo cycle, which consists of two isothermal processes and two adiabatic processes.