Overview
HZAOC GDJS-250E 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 SUS304B stainless steel plate, the outer side is Cold rolled steel plate sprayed, and the thermal insulation layer is ultra-fine Glass thermal insulation cotton.
2. The door is made of double-decked silicone rubber sealing material, the observation window is a multi-layer conductive film tempered hollow Glass, and is equipped with anti-frost 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 unit 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. Adopt steam boiler electric heating and humidification method, with water level control and heater anti-dry burning device.
7. The control system adopts High Accuracy Digital Temperature and Humidity Controller for accurate and stable control.
8. It is equipped with multiple safety protection measures, including phase loss, over-temperature, leakage, etc., and an independent over-temperature protector.
9. The electrical control 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 environment in the working room through evaporators, electric heaters, humidifiers, fans and other equipment in the air conditioning cabinet. The refrigeration system adopts a cascade refrigeration cycle to achieve rapid cooling through components such as Compressor, condenser, evaporator, etc. The heating and humidification systems generate heat and humidity through electric heaters and steam boilers respectively. Sensor signals are collected by High Accuracy Temperature and Humidity Controller, and PID control is carried out through actuators such as solid-state relays to realize the set temperature and humidity. Linear dispersion and alternating cycle.
Applications
Electrical and electronic products, components, parts and materials moisture resistance test, high and low temperature environment storage adaptability test, transportation adaptability test, use adaptability test
Steps
Connect the 380V +/- 10% power supply to ensure that the power phase is correct.
2. Set the required Temperature range (-70~ 150 ℃), Humidity range (30~ 98% RH), lifting temperature rate and timing time (0~ 999 hours) through the buttons on the operation panel.
3. Put the sample to be tested into the studio and close the box door to ensure that the double-decked silicone rubber is well sealed.
4. Start the equipment, and the control system will automatically run the refrigeration, heating, humidification, and fan systems, and perform the temperature and humidity alternation test according to the set program.
5. During the test, the sample status can be observed through the observation window and lighting, and the test hole can be used for external measurement if necessary.
6. After the test reaches the set time or conditions, the equipment can automatically stop running and take out the sample.
Notice
Equipment should be installed in a stable and well-ventilated place to ensure heat dissipation.
• Power supply voltage and phase sequence must be checked before power on to avoid equipment damage due to phase loss or phase sequence errors.
• When placing the sample, the supply trend (upper air supply) and return trend (lower air return) in the working room should not be blocked to ensure uniform temperature and humidity.
• Use purified water for humidification system water, and check the water level control device regularly to prevent dry burning.
• During the operation of the equipment, do not open the box door frequently to avoid affecting the temperature and humidity stability and test results.
• If there is a fault such as overtemperature or overload during operation, the fault indicator light will light up, and the equipment protection system will act. It needs to be troubleshooted before restarting.
• Regularly clean the inside of the box and the air conditioning cabinet to ensure that the evaporator, heater, fan and other components work normally.
• Non-professionals should not disassemble or repair refrigeration and electrical systems, involving high voltage components, there is a risk of electric shock.
