Overview
HZAOC GDW-010A low/high temperature test chamber is suitable for the adaptability test of electrical and electronic products, components, parts and materials in high and low temperature environment storage, transportation and use, as well as temperature gradual change test. It can also be used for stress screening test of electronic components.
Features
1. The box adopts the overall structure, the liner is imported SUS304B stainless steel plate, the outer wall is sprayed with Cold rolled steel plate, and the thermal insulation layer is made of ultra-fine Glass thermal insulation cotton.
2. The door is made of double-decked silicone rubber sealing material to ensure sealing.
3. The observation window is a multi-layer conductive film tempered hollow Glass, built-in special heating wire to prevent frost, and is equipped with lighting.
4. The side of the box is equipped with a 50mm test hole with a silicone rubber insulation plug.
5. The heater adopts porcelain frame nickel-chrome wire electric heater, which has little thermal inertness and long service life.
6. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit and uses R404A refrigerant. Miscellaneous key refrigeration components are internationally renowned brands.
7. Control system adopts High Accuracy Digital Temperature Controller and PT100 Sensor for accurate and stable control.
8. Safety protection system with multiple, including independent over-temperature protector, electrical interlock device and phase loss, overvoltage, overload, leakage and other protection.
Principle
The test chamber realizes the temperature regulation in the working room through the evaporator, electric heater and fan in the air-conditioning cabinet. The refrigeration system uses Compressor refrigeration, and the refrigeration capacity is adjusted by the shunt method. The heating system is controlled by a solid-state relay controlled by the temperature controller Output signal to drive the electric heater to work. The temperature sensor is placed in a trend, detects the temperature and feeds back to the Control system to realize PID adjustment, so that the temperature in the box changes according to the set program. The air supply method is the upper air supply and the lower air return to ensure uniform temperature.
Applications
Electrical and electronic products, components, parts and materials adaptability test, stress screening test
Standards
GB/T2423.1-2001、GB/T2423.2-2001、GB/T10592-2008、GB/T10589-1989、GB/T11158-1989、IEC68-2-1、IEC68-2-2
Steps
1. Ensure that the equipment is placed in an environment that meets the requirements (room temperature below 28 ° C, well ventilated, and 80cm space is reserved around).
2. Connect the AC380V (+/- 10%) three-phase four-wire power supply.
3. Turn on the power supply and various functions through the buttons on the operation panel.
4. Set the required temperature program and timing time on the thermostat (0 to 999 hours).
5. Put the sample into the studio and close the box door to ensure sealing.
6. Start the equipment and start the test.
7. During the test, the conditions in the box can be observed through the observation window lighting.
8. After the test, remove the sample according to the procedures and turn off the power of the equipment.
Notice
• Equipment Operating Environment Temperature should be in the range of 5 ℃~ + 28 ℃, and the average temperature within 24 hours should be less than or equal to 28 ℃.
• Environmental humidity should be ≤ 85%.
• Must use AC380V (+/- 10%)/50HZ three-phase four-wire power supply.
• The operating environment should be below 28 degrees and well ventilated.
• Items cannot be placed within 80 cm of the front, rear, left and right of the equipment placement.
• Before starting, confirm that the circulating fan is normal, otherwise the refrigeration and heating system may not start.
• Pay attention to the status of various protection indicators when the equipment is running, and deal with any faults in time.
• When using the test hole, pay attention to the thermal insulation sealing of the stopper.
