Overview
HZAOC GDJS-225E 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 the adaptability test of storage, transportation and use in high and low temperature environments.
Features
1. The box adopts the overall structure, the inner side is stainless steel plate, the outer side is sprayed Cold rolled steel plate, and the thermal insulation material is ultra-fine Glass thermal insulation cotton.
2. The door is made of double-decked silicone rubber sealing material, and the observation window is made of multi-layer conductive film tempered hollow Glass and is equipped with frost-proof heating wire and lighting.
3. The side of the box is equipped with a test hole with a silicone rubber plug, which has both thermal insulation efficiency.
4. Low temperature refrigeration adopts French "Taikang" fully enclosed Compressor and uses R404A environmentally friendly refrigerant.
5. The heater adopts porcelain frame nickel-chrome wire electric heater, which has little thermal inertness and long service life.
6. The humidification system adopts the steam boiler electric heating humidification method, and is equipped with water level control and dry burning prevention devices.
7. The control system adopts High Accuracy Digital Temperature and Humidity Controller for accurate and stable control.
8. Equipped with multiple safety protection measures, including phase loss, over-temperature, leakage protection, and independent over-temperature protectors.
9. The electrical control system is equipped with an interlock device to ensure that the heating and humidification system can work after the fan is started.
Principle
The test chamber adjusts the environment in the working room through the evaporator, electric heater, humidifier and fan in the air conditioning cabinet. The refrigeration system adopts a cascade refrigeration cycle, and the high-temperature evaporator acts as the condenser of the low-temperature stage at the same time, and the refrigeration capacity is adjusted by the shunt method. Heating and humidification are performed by the electric heater and steam boiler controlled by PID respectively. The temperature sensor is placed in a trend, and the temperature and humidity in the box are uniformly controlled and quickly exchanged by the way of upper air supply and lower air return.
Applications
Test on moisture resistance and high and low temperature adaptability of electrical and electronic products, components, parts and materials
Standards
The data did not mention specific compliance criteria
Steps
The information does not provide specific operation steps
Notice
* Power supply voltage 380V +/- 10%.
Before running, ensure that the circulating fan starts normally, otherwise the heating and humidification system will not work.
Pay attention to whether the frost-proof heating wire of the observation window is working properly to ensure clear observation under low temperature conditions.
* When using the test hole, attention should be paid to the sealing and insulation efficiency of the stopper.
* Regularly check the Reliability of system safety protection devices (such as over-temperature protectors, pressure protection, etc.).
The humidification system needs to ensure that the water level is normal to prevent the heater from drying out.
During the operation of the equipment, please pay attention to the status of the fault indicator.
