Overview
HZAOC GDJS-010D high and low temperature alternating damping heat test 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 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. The door sealing is made of double-decked silicone rubber sealing material.
3. The observation window is a multi-layer conductive film tempered hollow Glass, the size is 250 × 260mm, and the built-in special heating wire is frost-proof and lighting.
4. The side of the box is equipped with φ 50mm test hole, the stopper is silicone rubber low foam material, high and low temperature resistance and thermal insulation.
5. The heater adopts porcelain frame nickel-chrome wire electric heater, which has small thermal inertia, long service life, and stable and reliable PID control.
6. The humidification system adopts steam boiler electric heating and humidification method, armored electric heating tube, PID control, water level control and anti-dry burning device.
7. The control system adopts LCD Touchscreen Temperature and Humidity Controller, PT100 Temperature Sensor, Solid State Relay Zero Trigger to improve the control accuracy.
8. Safety protection measures include phase loss protection, phase sequence error protection, phase voltage uneven protection, fan overload protection, over-temperature power failure protection, leakage protection, etc.
9. Equipped with independent over-temperature protectors and interlocking devices to ensure the safety of the equipment.
Principle
The test chamber uses the evaporator, electric heater, humidifier, fan and other equipment in the air conditioning cabinet to circulate the air in the upper air supply and lower air return mode, and the temperature transducer is placed in a trend to realize temperature and humidity control. The heating system is controlled by the pulse duty cycle PID signal output by the instrument and controlled by the solid state relay. The humidification system adopts PID control mode and uses the SSR control of the non-touch point periodic pulse width adjustment to ensure the uniform and stable temperature and humidity.
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
Standards
GB/T2423.3-2001、GB/T5170.5-96、GB/T10586-89
Steps
1. Turn on the power supply AC380V and check the power indicator.
2. Set the temperature and humidity parameters through the operation panel: Temperature range -60~ 150 ℃, Humidity Control Range 30~ 98% R.H.
3. Start the circulating fan to ensure that the interlock allows the heating and humidification system to operate.
4. Turn on the lighting as needed to observe the sample.
5. Carry out the test operation through the test hole, and plug the stopper after use.
6. Monitor the operation of the control system and deal with any malfunctions promptly.
Notice
* Power frequency check meets AC380V requirement before operation.
Make sure the circulating fan starts normally, otherwise the heating and humidification system will not work.
* Plug the stopper in time after using the test hole to maintain the thermal insulation efficiency.
Regularly check the water level control device and anti-dry burning device to avoid heater dry burning.
Pay attention to the status of the over-temperature protector to ensure that the heating power can be reliably disconnected in the event of a main controller failure.
* Avoid opening the observation window for a long time in a high temperature and high humidity environment to prevent affecting the test accuracy.
Disconnect the power supply during maintenance and follow safety measures.
