高低温交变试验箱结构概述
1, outside the gallbladder are used stainless steel
2, the imported advanced stainless steel (SUS304) panels.
3, heat preservation material: high density glass fiber cotton. The insulation thickness is 100mm
4, temperature circulation system: the special air conditioning type low noise long axis of the fan motor, high and low temperature resistant stainless steel multi wing impeller, to achieve the cycle of vertical diffusion in convective intensity.
Between the 5, and the box body adopts a double-layer high-temperature resistant stretch seal to ensure that the test area closed
6, the use of no anti door handle, easy to operate
7, the machine is used in the bottom of the high – quality PU round.
8, the observation window uses the multi – layer hollow toughened glass, the inner layer of the film is heated in the film to heat the cream (clear observation test procedure)
9, test hole (machine left) can be outside the test power line or signal line use (the diameter or the number of holes to increase the need to indicate)
Eleven, heating system
1, the use of far infrared high speed heating (2KW x 2) electric heater
2, high temperature and complete independent system, does not affect the low temperature test, high temperature test and alternative
3, temperature control output power by microcomputer calculation, to high precision and high efficiency of electricity efficiency
Twelve, circuit control system
1, temperature and humidity control instrument adopts “South Korea original TEMI850” big screen – liquid crystal display – programmable microcomputer PID control SSR output operation. Full import large LCD touch screen, screen operation is simple, easy to edit.
2, accuracy: 0.1 (range)
3, resolution: 0.1;
4, temperature sensor: PT100 platinum resistance thermometer;
5, control mode: thermal equilibriumtemperature humidity; all electrical appliances are used (Schneider) series of products
6, temperature and humidity control using P. I. D+S.S.R system with channel coordination control
7, with automatic calculation of the function, can change the temperature and humidity conditions immediately corrected, so that the temperature and humidity control more accurate and stable
8, the operation interface in the controller English available, real-time operating curve diagram of screen display
9, with 100 groups of programs, each group of 100 segments, each of the 999 steps of the capacity, each time set maximum value of 99 hours 59 minutes
10, data and test conditions, the controller has a screen lock function, to avoid human touch and stop
11, with RS-232 or RS-485 remote communication interface, can be on the computer design program, monitoring the process and the implementation of automatic switch machine and other functions
12, a controller with automatic screensaver screen function, in operation for a long time to better protect the LCD screen (the life of the longer)
13, the test box back to the outlet with automatic de frost device (so as to make the test when the water vapor will not be gathered in the refrigeration evaporator, resulting in ice blocking phenomenon)
Thirteen, refrigeration system control
1, full closed compressor: France Taikang 1.5HP * 2 * 1 group
2, refrigeration mode: Double cascade refrigeration
3, condensation mode: forced air cooling
4, refrigerant: R23, R404A (environmental protection)
5, the pipeline system were tested. 48H pressure ventilation leakage
6, heating, cooling system is completely independent
7, inner screw type refrigerant copper tube
8, slope type evaporator
9, dry filter, cooling medium flow window, repair valve, oil separator, solenoid valve, cylinder are used to import the original
10, the desiccant system: the evaporator coil dew point temperature of the air flow contact
11, when the temperature of R404A, R23,, when the desiccant only start R404A (energy saving)
Fourteen, protection system
1, the wind turbine overheat protection
2, the overall equipment under phase / reverse phase protection
3, refrigeration system overload protection
4, refrigeration system overpressure protection
5, the overall equipment timing
6, water pump overheating, over current protection
7, other as well as leakage, water shortage, operation instructions, automatic shutdown and other protection after the fault alarm.
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