air circulation
In the interlayer of the air duct at one end of the working room, there are heaters, refrigeration evaporators, fan blades and other devices distributed; the fan is used to circulate the air in the box. When the fan rotates at high speed, the air in the working room is sucked into the air duct from the middle. After cooling, it is blown out from the side of the air duct, and the air after heat exchange with the test product in the working room is sucked into the air duct and circulated repeatedly to meet the temperature setting requirements.
Cooling System
The refrigeration part is the main part of the equipment to generate the cold source, which provides the required cooling capacity for the cooling, low temperature and constant temperature of the equipment. To achieve the purpose of equipment performance indicators. The refrigeration system is designed using energy regulation technology. An effective treatment method can not only ensure the normal operation of the refrigeration unit, but also adjust the energy consumption and cooling capacity of the refrigeration system, so that the operating cost of the refrigeration system can be reduced to a more economical state.
circuit control
It adopts LCD touch screen programmable temperature controller, which has the functions of automatic trial operation and PID parameter self-tuning. The setting of control parameters adopts Chinese interface and man-machine dialogue. Just set the temperature to realize the automatic operation function of the refrigerator. The control system adopts an intelligent control software system, which can automatically combine the working conditions of refrigeration, heating and other subsystems to ensure high-precision control in the entire temperature range and achieve the purpose of saving energy and reducing consumption. The perfect detection device can automatically carry out detailed fault display and alarm. For example, when there is an abnormality in the test box, the controller will automatically display the fault status.
security system
Studio over-temperature protection;
Heater short circuit protection;
Fan overload protection;
Compressor overpressure protection;
Compressor overload protection;
Compressor oil pressure protection;
Undervoltage and phase loss protection;
Safe and reliable grounding device.
standard test
GB/T 2423.22-2012 Part 2: Test method Test N: Temperature change;
IEC 60068-2-14-2009 Environmental Testing Part 2-14 Test Test N Temperature change;
GJB 1 50.5A-2009 temperature shock test;
GJB 360B-2009 Test methods for electrical and electronic components.
Confirm that the performance of the thermal shock Test Chamber is up to standard
Performance confirmation of GB/T2424.5-2006 environmental test Temperature Test Chamber for electrical and electronic products;
GB/T5170.2-2008 Environmental test equipment + temperature test equipment test method for electrical and electronic products;
JJF1101-2003 Specification for temperature and humidity calibration of environmental test equipment.
