Overview
HZAOC GDJW-250E low/high temperature test Chamber is suitable for the adaptability test of electrical, electronic products, components, parts and materials in high and low temperature environment storage, transportation and use, as well as temperature gradual change test. Stress screening test can also be carried out on electronic components.
Features
1. The box adopts the overall structure, the inner side is 1.0mm SUS304B stainless steel plate, the outer side is 1.0mm Cold rolled steel plate sprayed, and the thermal insulation material is ultra-fine Glass thermal insulation cotton
2. Door sealing with double-decked silicone rubber sealing material
3. The observation window is a multi-layer conductive film tempered hollow Glass, size 200 × 300mm, built-in special heating wire anti-frost and equipped with lighting
4. The side of the box is equipped with φ 50mm test hole, and the stopper material is silicone rubber low foam
5. The heating device adopts porcelain frame nickel-chromium wire electric heating device, which has small thermal inertness and long service life
6. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor unit, using R404A environmentally friendly refrigerant
7. Control system adopts High Accuracy Digital Temperature Controller, accurate and stable control, long-term operation does not drift
8. Safety protection measures include phase loss protection, phase sequence error protection, over-temperature protection, etc
Principle
The test Chamber achieves temperature control through evaporators, electric heaters, humidifiers, fans and other equipment in the air conditioning cabinet. The heating system outputs a controllable pulse duty cycle PID signal from the instrument, and controls the heating device through a solid-state relay. The refrigeration system uses a fully enclosed Compressor unit to achieve a low temperature environment. The temperature sensor is placed in a trend, and the air is circulated in the way of upper air supply and lower air return to ensure Temperature uniformity.
Applications
Electrical, electronic products, components, parts and materials of high and low temperature environmental test, temperature gradual change 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. Turn on the power supply and check whether the Power supply voltage meets the requirements of 380V +/- 10%
2. Check whether the water source is deionized water or purified water
3. Set the required temperature parameters and timing time through the operation panel
4. Start the circulating fan
5. Start the heating or cooling system
6. Observe temperature changes and monitor system operation status
7. After the test is completed, shut down each system in sequence
Notice
• Equipment Ambient Temperature should be 5~ 28 ℃, Humidity ≤ 85% R.H
• Must use deionized water or purified water as a source of water
• When the circulating fan is not started or overloaded, the refrigeration unit and heating system cannot be started
• Pay attention to observe the operation of the high voltage meter monitoring system
• Pay attention to check the fault indicator light when a fault occurs
• Safety protection devices are checked regularly
• Do not open the box door at will when the equipment is running
