Constant temperature and humidity tester
Release time：2022-07-01 16:33:55 Number of hits：325
main features
1. Perfect shape design: arc shape and surface spray treatment, high texture appearance, and the use of flat non reaction handle, easy to operate, safe and reliable. 2. Large observation window with bright and wide field of vision: it adopts three-layer vacuum coating window and Philips energy-saving fluorescent lamp, without wiper demist, to maintain a clear observation effect, and can observe the condition of the test object at any time.
3. Separation of humidification system pipeline and control circuit: the humidification system pipeline is separated from power supply, controller and circuit board, which can avoid affecting the circuit due to pipeline leakage and improve safety.
4. Advanced and reliable refrigeration and control system: imported European and American fully enclosed compressors, imported environmental protection refrigerant, refrigeration devices of world-famous brands, imported LCD touch screen controller, friendly interface, simple and easy to learn operation.
Working principle of constant temperature and humidity test chamber: [2]
Working principle of refrigeration: the refrigeration cycle adopts the inverse karot cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, and the consumed work increases the exhaust temperature. Then the refrigerant is isothermal exchanged with the surrounding media through the condenser to transfer heat to the surrounding media. The rear refrigerant works through adiabatic expansion of the shut-off valve, and the refrigerant temperature decreases at this time. Finally, the refrigerant absorbs heat isothermal from the object with higher temperature through the evaporator, so that the temperature of the object to be cooled is reduced. This cycle is repeated to achieve the purpose of cooling. The refrigeration system of this test chamber adopts a unit freon refrigeration system composed of a set of Taikang fully enclosed compressor made in France. The design of the refrigeration system applies energy regulation technology, which can not only ensure the normal operation of the refrigeration unit, but also effectively regulate the energy consumption and refrigerating capacity of the refrigeration system, so as to keep the refrigeration system in the best operating state. Using balanced temperature regulation (BTC), that is, when the refrigeration system is working continuously, the control system controls the output of the heater through PID automatic operation according to the set temperature point, and finally achieves a dynamic balance.
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