真空干燥箱專門設(shè)計用于干燥熱敏性，易分解和易氧化的物質(zhì)。 可以將惰性氣體填充到真空干燥箱中，尤其是某些成分復(fù)雜的物品可以快速干燥。

真空度是指真空干燥爐處于真空狀態(tài)的程度，通常用“高真空”和“低真空”表示。 如果被測設(shè)備中的壓力強于大氣壓，則需要使用真空計進行壓力測量。 從真空計讀取的值稱為真空度。

真空度是指系統(tǒng)壓力的實際值低于大氣壓時的值，即：真空度=大氣壓-絕對壓力補充綜合說明：真空度是指真空度 。 所謂的“真空”是指在給定空間中壓力低于101325帕斯卡的氣體狀態(tài)。 例如，微型真空泵PH2506B的測量值為-75KPa，這意味著該泵可以抽至比測量位置的大氣壓低75KPa的真空狀態(tài)。

在國際真空行業(yè)中通常使用的“真空度”也是用絕對壓力最科學(xué)地標記的。 它指的是“極限真空度，絕對真空度，絕對壓力”，但是“相對真空度”由于簡單的測量方法和測量儀器而非常簡單。 它通用，易于購買且價格低廉，因此也被廣泛使用。

從理論上講，兩者可以相互轉(zhuǎn)換。 兩者的轉(zhuǎn)換方法如下：相對真空度=絕對真空度（絕對壓力）-測量位置處的氣壓，例如，如果微型真空泵VM8001的絕對壓力為80KPa，則其相對真空度 約為80-100 = -20Kpa，在普通真空計上應(yīng)顯示為-0.02MPa。

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The vacuum drying oven is specially designed for drying heat sensitive, easily decomposed and easily oxidized substances. The inert gas can be filled into the vacuum drying oven, especially some items with complex composition can be dried quickly.

The degree of vacuum refers to the degree to which the vacuum drying furnace is in a vacuum state, usually expressed as "high vacuum" and "low vacuum". If the pressure in the device under test is stronger than atmospheric pressure, you need to use a vacuum gauge for pressure measurement. The value read from the vacuum gauge is called the vacuum degree.

The vacuum degree refers to the value when the actual value of the system pressure is lower than the atmospheric pressure, namely: vacuum degree = atmospheric pressure-absolute pressure. Supplementary comprehensive description: vacuum degree refers to the vacuum degree. The so-called "vacuum" refers to the gas state in a given space with a pressure lower than 101325 Pascals. For example, the measurement value of the micro vacuum pump PH2506B is -75KPa, which means that the pump can be pumped to a vacuum state that is 75KPa lower than the atmospheric pressure at the measurement location.

The "vacuum degree" commonly used in the international vacuum industry is also the most scientifically marked with absolute pressure. It refers to "Ultimate Vacuum, Absolute Vacuum, Absolute Pressure", but "relative vacuum" is very simple due to simple measurement methods and measuring instruments. It is versatile, easy to buy and low in price, so it is also widely used.

In theory, the two can be converted to each other. The conversion method between the two is as follows: relative vacuum degree = absolute vacuum degree (absolute pressure)-air pressure at the measuring position, for example, if the absolute pressure of the mini vacuum pump VM8001 is 80KPa, the relative vacuum degree is about 80-100 = -20Kpa , It should be displayed as -0.02MPa on the ordinary vacuum gauge.

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