Overview
HZAOC GDJW-150B high and low temperature alternating 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. The equipment can also perform stress screening test on electronic components. Temperature range is -30~ 150 ℃, and studio volume is 150L.
Features
1. The box adopts the overall structure, the inner side is 1.0mm SUS304B stainless steel plate, and the outer side is 1.0mm Cold rolled steel plate
2. The thermal insulation material is made of ultra-fine Glass thermal insulation cotton, and 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, with built-in special heating wire anti-frost and lighting
4. The heater adopts porcelain frame nickel-chrome wire electric heater, which has little thermal inertness and long service life
5. The control system adopts LCD Touchscreen temperature and humidity controller and Schneider electrical components
6. The controller has full Chinese menu operation, small display resolution 0.01 ℃
7. 120 sets of programs can be set, each set has 99 steps, and supports program connection and loop operation
8. With a variety of safety protection measures, including phase loss protection, over-temperature protection, leakage protection, etc
Principle
The test chamber realizes temperature control through evaporators, electric heaters and fans in the air-conditioning cabinet. The heating system adopts a porcelain frame nickel-chrome wire electric heater, and the controllable pulse duty cycle PID signal output by the instrument is controlled by a solid-state relay. The cooling system adopts the shunt method to adjust the cooling capacity. The air supply method is the upper air supply and the lower air return. The temperature transducer is placed in a trend to monitor the temperature in real time.
Applications
Electrical, electronic products, components, parts and materials of high and low temperature environmental adaptability test, temperature gradual change test, stress screening test
Steps
1. Set test parameters through the controller, including temperature range, program group, running time, etc
2. Select the operation mode: fixed-value operation or program operation
3. Invoke pre-stored process Linear dispersion or write new programs
4. Start the device and monitor the real-time displayed temperature, running time and other data
5. After the test is completed, the equipment will automatically stop running
Notice
• Power frequency of the equipment is 380V +/- 10%, to ensure stable power supply
• When the circulating fan is not started or overloaded, the refrigeration unit and heating system cannot be started
• When a fault occurs, find the cause according to the fault number displayed by the controller
• The equipment is equipped with test holes, and silicone rubber stopper sealing should be used in time after use
• When the main controller fails, the independent over-temperature protector will disconnect the heating power supply
• The refrigeration unit will be prohibited from operating when the unit is ultra-high voltage and overloaded
