Overview
HZAOC GDJS-250A High and Low Temperature Alternating Damping heat testing chamber is suitable for investigating the moisture resistance of electrical and electronic products, components, parts and materials under different temperature and humidity conditions, as well as storage, transportation and use adaptability tests in high and low temperature environments.
Features
1. The box adopts the overall structure, the inner side is SUS304B stainless steel, the outer side is sprayed Cold rolled steel plate, and the insulation layer is ultra-fine Glass cotton.
2. The door is sealed with double-decked silicone rubber, and the observation window is a multi-layer conductive film tempered hollow Glass and equipped with frost-proof heating wire and lighting.
3. Equipped with test holes with silicone rubber plugs for both thermal insulation performance.
4. Adopt French "Taikang" fully enclosed Compressor, use R404A environmentally friendly refrigerant, and the refrigeration system is equipped with multiple safety protections.
5. The heater adopts porcelain frame nickel-chrome wire electric heater, which has little thermal inertness and long service life.
6. Adopt steam boiler electric heating and humidification method, equipped with water level control and anti-dry burning device.
7. High Accuracy Digital Temperature and Humidity Controller for accurate and stable control.
8. The control system is equipped with multiple safety protections such as phase loss, over-temperature, and leakage, as well as independent over-temperature protectors.
9. The electrical system is equipped with an interlock device to ensure that the heating and humidification system cannot be started when the fan is not started or overloaded.
Principle
The test chamber adjusts the temperature and humidity of the air in the working room through the evaporator, electric heater, humidifier and fan in the air conditioning cabinet. The temperature control controls the solid-state relay to drive the heater or refrigeration Compressor through PID signal; the humidity control controls the solid-state relay to drive the humidifier through PID. The uniform distribution of temperature and humidity in the box is realized by the return air mode under the upper air supply.
Applications
Electrical and electronic products, components, parts and materials moisture resistance test, high and low temperature environmental adaptability test
Standards
The data did not mention specific compliance criteria
Steps
The information does not provide specific operation steps
Notice
* Equipment must operate at 380V +/- 10% Power supply voltage.
Make sure the phase sequence is correct before running, and the system is equipped with phase sequence error protection.
Pay attention to the status of the circulating fan. When the fan is not started or overloaded, the heating and humidification system will not start.
When using the humidifier, ensure that the water level is normal to prevent the heater from drying out.
During the low temperature test, the heating wire of the observation window will automatically work to prevent frost formation.
Regularly check whether the system pressure and safety protection devices are reliable.
The equipment is equipped with an independent over-temperature protector, but it still needs to be repaired in time if the main controller malfunctions.
