Rapid Temperature Change Test Chamber For Quality Inspection

In order to facilitate the production line workers easier to carry out product testing, Wewon Environmental Chambers Co., Ltd. has developed a new type rapid temperature change test chamber for quality inspection and product research. The rapid temperature change test chamber mainly used for optical communication module, semiconductor chip’s reliability and performance test solutions. Gloveboxes environmental chamber is fitted with a large sight window and special glove ports for access to the test area. The diameter of glovebox iris port is 100 mm.

Through the glove box sleeves, the worker who work on production line can check the quality of the tested samples online during the test, This way will not affect its temperature and humidity fluctuations. Long time low temperature operation, the test room without any frost even the machine runs for a long time. An LED light is installed on the top of the sight window to clearly observe the sample detection situation in the test room.

Rapid Temperature Change Test Chamber

Model DescriptionWEW-TKG-150WEW-TKG-225WEW-TKG-408CH-800WEW-TKG-1000
Internal Volume (L)150 Liters225 Liters408 Liters8001000 Liters
Internal Size (cm)50×60×5050×75×6060×85×80100×100×80100×100×100
External Dimensions (cm)74×170×13174×185×14184×195×161124×210×161124×210×181
Gross Weight (Kg)350 KG425 KG485 KG650 KG770 KG
Temp Adjustment MethodBalanced temperature and humidity adjustment method (BTHC) PID intelligent adjustment
Temperature Range-20℃ ~ 150℃|-40℃ ~ 150℃|-70℃ ~ 150℃
Humidity Range20% ~ 98% R.H|30% ~ 95% R.H
Temperature Uniformity±1℃|Temperature Fluctuation: ±0.5℃
Humidity Uniformity± 2% R.H|Humidity Fluctuation: ±1% R.H
Heating Rate ≥ 3°C/min|Cooling rate: ≥ 1°C/min
Inner Body MaterialSUS304 mirror stainless steel plate
Shell MaterialSUS304 brushed stainless steel plate or anti-rust treatment cold rolled steel plate (plastic sprayed)
Insulation MaterialSpecial ultra-fine glass wool + polyurethane foam for rapid temperature change test chamber
Refrigeration MethodMechanical binary refrigeration method
RefrigeratorFrench Tecumseh compressor or German BOKE compressor
RefrigerantR23, R404a, R507 Dupont Freon (United States)
Condensation MethodAir cooling or water cooling
Heater PartsNickel-chromium alloy stainless tube heater
Humidifier DeviceSpecial stainless steel humidifier for constant temperature change test chamber
Blower SystemCentrifugal Fan
Airflow ModeBroadband forced air circulation (top out and bottom in)
Operation InterfaceLCD touch screen for rapid temperature change test chamber
Operation ModeConstant value operation, program operation
Program Memory100 groups programmable, each program maximum 999 (segment)
Setting Index Range-100℃ ~ +300℃ Humidity: 99.9% R.H
Resolution StandardTemperature: 0.01℃ Humidity: 0.1% R.H
Input SensorPT100 or T type thermocouple
Control MethodPID Control for Rapid Temperature Change Test Chamber For Quality Inspection And Product Research
Communication PortRS-232 interface for constant temperature and humidity machine (distributed CD)
Subsidiary FunctionsUpper and lower limit alarm, Self-diagnosis, Alarm display (fault reason), Timing device
Water Supply ModeCirculating water supply
Water Supply TankBuilt-in fixed water tank, Manually add water
Use Water QualityDistilled water or purified water

The Wewon’s rapid temperature change test chamber is equipped with two 1.5 kW French Tecumseh compressors, Cooling capacity temperature change rate can be 3℃ / min. The machine can carry out on-line product quality inspection task according to the specified temperature change rate. The volume and wind speed will be adjusted automatically, This makes the temperature in the test area is evenly distributed. Through an electronic expansion valve, The surface temperature difference of the tested product is suppressed, and the linear control precision is realized.

Rapid Temperature Change Test Chamber For Quality Inspection And Product Research

Rapid temperature change test chambers popular used for 5G optical module, optical fiber communication parts. Almost all optical devices have to go through high and low temperature cycle test before they leave the factory. Each material has a different coefficient of thermal expansion. The failure risk of different materials can be tested only under drastic temperature changes.

Test Standard for Rapid Temp Change TestTrade NamesHigh TemperatureLow TemperatureTemperature Change RateNumber of CyclesCycle TimeRemarks
MIL-STD-2164, GJB-1032-90 electronic product stress screeningN/AWorking temperatureWorking temperature5℃/min10~123h20minN/A
MIL-344A-4-16 Environmental stress screening of electronic equipmentEquipment or System71°C-54℃5℃/min10N/AN/A
MIL-2164A-19 Environmental Stress Screening of Electronic EquipmentN/AWorking TemperatureWorking Temperature10℃/min10N/AThe residence time is when the internal temperature reaches 10℃
NABMAT-9492 U.S. Navy Manufacturing ScreeningEquipment or System55℃-53°C15℃/min10N/AThe dwell time is when the internal temperature reaches 5℃
GJB/Z34-5.1.6 Quantitative Environmental Stress Screening of Electronic ProductsComponents85°C-55℃15℃/min≧25N/ATime to stabilize temperature
Z34-5.1.6 Quantitative Environmental Stress Screening of Electronic ProductsEquipment or System70℃-55℃5℃/min≧10N/ATime to stabilize temperature
Notebook ComputerMotherboard Manufacturer85°C-40℃15℃/minN/AN/AN/A

Temperature cycle test for heating and cooling rate at least 10℃/min. For +85℃ and -40℃ temperature test, It has to stay long enough for the device to reach ambient temperature. Light modules for indoor applications, It’s OK to cycle 100 times. For outdoor application of light modules, It requires 500 cycles of temperature. Rapid temperature changes also cause greater stress on the tested product. Therefore, the efficiency of stress screening is improved. When the load is more than 100 Kg, Linear 15℃/min, with load in the heating and cooling process, Test room’s temperature deviation within ±2.0℃

The heating and cooling rate is at least 10℃/min, and the cycle test is performed at the two temperature points of 85℃ and -40℃

Rapid Temperature Change Test Chamber’s Usage: The equipment is mainly used for the metal materials of electronic products and their adaptability test and stress screening test under the simulated climate condition of rapid change or gradual change of temperature, Test and judge the physical and other related properties of the product. There no need to open or close the door, the tested sample can be put in or taken out freely through the operation hole.

Wewon’s environmental chamber with glove ports can be used long time online with low-temperature operation without defrosting in the test room. It is greatly improve the efficiency of production testing (The ordinary environmental chambers need to be warmed up and defrosted, and then lined up to cool down, which is undoubtedly time-consuming and power-consuming)

Wewon’s environmental glove chamber with bright and large observation window with wide field of vision: adopts three-layer vacuum coating window and energy-saving fluorescent lamp, does not need wipers to defog, maintains a clear observation effect in the gloveboxes environmental chamber, and can observe the condition of the sample in the rapidly temperature change test chamber at any time.

Gloveboxes environmental chamber from Wewon Environmental Chambers Co., Ltd. select the touch screen control method to record the temperature (humidity) curve in real-time operation of the experiment, which can be remotely controlled and managed through the computer software. Test standard for glovebox iris port temperature cycle test chamber comply with GB/T2423.22, IEC 60068-2-14, JESD 22-A104-D, JESD 22-A105-C.

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