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The Best Vacuum Chamber Ovens and Testing Chambers for Your Needs

The laboratory vacuum chamber ovens designed and produced by Wewon Environmental Chambers Co., Ltd., are the best choice for customers who are looking for high-quality vacuum chamber ovens. Not only do they have stable and efficient heating performance, But they also feature quick deoxygenation, excellent insulation, nitrogen function, good sealing performance, and loading shelf. These vacuum chamber ovens can meet your demands for various thermal vacuum chamber testing, vacuum chamber leak tests, and vacuum chamber tests. Choose our products, and you’ll experience a superior vacuum chamber testing process to help you achieve your goals.

Since the structure of the vacuum drying oven is difficult to achieve uniform radiant heat at all points in the test chamber, and there is a lack of authoritative evaluation methods, These factors lead to the issue of temperature uniformity not being considered in the technical parameters of the electrically heated vacuum drying oven. With vacuum chamber ovens from Wewon Environmental Chambers Co., Ltd., You can enjoy high-quality products and outstanding performance.

Stable and fast heating performance helps to improve the quality and efficiency of the product. High Efficiency: Equipment Features:
The inner test room is made of SUS304 stainless steel, and the box is fully sealed with argon arc welding, effectively ensuring the sealing performance and quickly removing oxygen from the box. Quick Deoxygenation:
The space between the inner box and the working chamber is filled with high-density alumina silicate insulation material, which can effectively maintain the temperature and save energy. Insulation Effect:
Can be filled with inert gas, nitrogen, argon, which can protect materials from oxidation, realize an atmosphere-free or low-oxygen environment, and achieve cooling effect. Nitrogen Function:
The sealing ring at the junction of the door and the inner box is made of high-temperature resistant material, effectively ensuring the sealing performance of the test room. Sealing Ring:
The internal of the working chamber is equipped with a detachable loading shelf, which can bear up to 50KG (can be selected with 50-300KG according to the material requirements). Loading Shelf:
Vacuum Chamber Oven
Equipment Mode WEW-IO-025L WEW-VSC-90L WEW-VSC-215L
Working Environment Ambient Temperature 5~30 ℃ Ambient Temperature 5~30 ℃ Relative Humidity≤80%
Temperature Control  Room Temperature +10~250 ℃ RT+10℃ ~ +300 ℃ RT+10℃ ~ +350 ℃
Power Supply AC220V±10% 50Hz AC220V±10% 50Hz AC220V±10% 50Hz
Temperautre Accuracy ±1℃ at 100℃ ±2℃ at 100℃ ±2℃ at 100℃
Tmperature Volatility ±0.5℃ ±2℃ ±2℃
Temperature Uniformity ±2℃ at 100℃ ±2℃ at 100℃ ±2℃ at 100℃
Controller Unit Digital Display, Touch Type Microprocessor Temperature Control  PID Control Technology
Temperature Sensor High Precision Platinum Resistance Sensor PT 100 for Temp Sensor High Precision Platinum Resistance Sensor
Time Setting 0-9999 Minutes 0-9999 Minutes 0-9999 Minutes
Power Consumption 450W (Max) 1200W (Max) 2100W (Max)
Inside Material 08F Cold Rolled Steel Plate 304 Stainless Steel 304 Stainless Steel
Outer Material 08F Cold Rolled Steel Plate 08F Cold Rolled Steel Plate 08F Cold Rolled Steel Plate
Test Room Size 300*300*275mm 450*450*450mm 560*640*600mm
External Dimension 590*420*460mm 610*590*1380mm 720*730*1660mm
Heating Method Heated all around Baffle heating Baffle heating
Testing Volume 25 Liters 90 Liters 215 Liters
Partition Shelves 2 Pieces 2 Pieces 3 Pieces
Other Note Without Vacuum Pump Include Vacuum Pump Include Vacuum Pump

The difference between the instrument reading of a vacuum chamber oven and the glass rod thermometer in the test room can be attributed to the following reasons: Usually, Electric vacuum chamber ovens are designed to heat the wall of the vacuum chamber first and then radiate heat to the workpiece. In this setup, the temperature sensor of the temperature controller can be placed on the outer wall of the vacuum chamber. This sensor can receive convection, conduction, and radiation heat simultaneously.

On the other hand, the glass rod thermometer inside the vacuum chamber can only receive radiation heat. Additionally, due to the limitations of the glass rod’s emissivity, a portion of the radiation heat is refracted. As a result, The temperature values indicated by the glass rod thermometer are lower than the instrument reading. It is considered normal for the readings to differ by around 30°C at 200°C working conditions. If the temperature sensor of the temperature controller is placed inside the vacuum chamber,

The difference between the glass rod thermometer and the instrument reading can be slightly reduced, But it cannot be completely eliminated. Furthermore, the reliability of the vacuum chamber’s seal adds a potential source of unreliability. To minimize or eliminate this difference from a practical standpoint, a temperature controller with a display correction function can be used. This feature allows for adjusting the instrument reading to align with the glass rod thermometer.

In our vacuum chamber oven, Through a combination of electric heating and a blower, We achieve even temperature distribution for efficient and precise drying results. However, Since the possibility of relying on the movement of gas molecules to achieve temperature uniformity inside a vacuum drying oven is extremely low, We no longer use the temperature uniformity standards defined by traditional electric heating and blower drying ovens.

In a vacuum, The temperature uniformity index becomes meaningless because the amount of thermal radiation is inversely proportional to the square of the distance. This means that the same object at a distance of 20cm from the heating wall receives only 1/4 of the radiant heat that it receives at a distance of 10cm from the heating wall. Because this difference is so large, We can compare it to when basking in the sun in winter. The side that is exposed to the sun is warmer, While the side that is not exposed to the sun is cooler.

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