knudsen gauge

简明释义

克努曾压力计

英英释义

例句

1.The research team used a knudsen gauge to measure the vacuum pressure in their experimental setup.

研究小组使用Knudsen计来测量他们实验装置中的真空压力。

2.The knudsen gauge is particularly useful in low-pressure environments where traditional gauges fail.

在传统仪表失效的低压环境中，Knudsen计特别有用。

3.In order to ensure accurate readings, the knudsen gauge was calibrated before each experiment.

为了确保读数准确，Knudsen计在每次实验前都进行了校准。

4.They relied on the knudsen gauge to monitor the gas flow during the chemical reaction.

他们依靠Knudsen计来监测化学反应过程中的气体流动。

5.A malfunctioning knudsen gauge can lead to incorrect pressure readings and affect the experiment's outcome.

故障的Knudsen计可能导致压力读数不正确，从而影响实验结果。

作文

In the field of vacuum technology, accurate measurement of pressure is crucial for various applications, ranging from scientific research to industrial processes. One of the most effective instruments used for this purpose is the knudsen gauge, which operates based on the principles of molecular flow and gas kinetics. Understanding how a knudsen gauge works can provide valuable insights into its importance in modern science and engineering.The knudsen gauge is designed to measure low pressures, typically in the range of 10^-3 to 10^-9 Torr. It was developed by Martin Knudsen in the early 20th century, who recognized the need for a reliable method to measure vacuum conditions. The gauge operates under the assumption that at very low pressures, the mean free path of gas molecules becomes comparable to the dimensions of the measuring device. This means that gas molecules travel long distances without colliding with one another, allowing for a more accurate assessment of pressure.One of the key features of the knudsen gauge is its use of a thermal conductivity principle. The gauge consists of a small heated filament or wire, and as gas molecules collide with it, they transfer heat away from the filament. The rate of heat loss is directly related to the number of gas molecules present, which allows for the calculation of pressure. This principle makes the knudsen gauge particularly useful in environments where other types of gauges may fail due to the extremely low pressure conditions.Moreover, the knudsen gauge has several advantages over traditional pressure measurement devices. For instance, it is less affected by the type of gas being measured, making it versatile for different applications. Additionally, it provides real-time measurements, allowing scientists and engineers to monitor changes in pressure instantaneously. This capability is essential in experiments where maintaining a specific vacuum level is critical for the success of the process.Applications of the knudsen gauge are widespread in various fields. In the semiconductor industry, for example, maintaining ultra-high vacuum conditions is necessary for the fabrication of microchips. The knudsen gauge helps ensure that the environment remains free of contaminants, leading to higher quality products. Similarly, in the field of surface science, researchers use the knudsen gauge to study the properties of materials under vacuum conditions, contributing to advancements in nanotechnology and material science.Despite its many advantages, the knudsen gauge also has limitations. It requires careful calibration and can be sensitive to changes in temperature and other environmental factors. Therefore, users must ensure that the gauge is properly maintained and calibrated to obtain accurate readings. Furthermore, while it excels in low-pressure environments, it may not perform as well in higher pressure ranges, necessitating the use of complementary measurement devices.In conclusion, the knudsen gauge is an essential tool in the realm of vacuum technology, providing accurate and reliable pressure measurements in low-pressure environments. Its unique operating principles and versatility make it invaluable in various scientific and industrial applications. As technology continues to advance, the relevance of the knudsen gauge will likely persist, helping researchers and engineers achieve their goals in an increasingly complex world. Understanding the functionality and application of the knudsen gauge is crucial for anyone involved in vacuum technology, underscoring its significance in modern science and engineering endeavors.

在真空技术领域，压力的准确测量对各种应用至关重要，从科学研究到工业过程。其中一种最有效的仪器是knudsen gauge，它基于分子流动和气体动力学的原理进行操作。理解knudsen gauge的工作原理可以为我们提供对其在现代科学和工程中重要性的宝贵见解。knudsen gauge旨在测量低压，通常在10^-3到10^-9 Torr的范围内。它是由马丁·克努森在20世纪初开发的，他意识到了测量真空条件的可靠方法的需求。该仪器在非常低的压力下，气体分子的平均自由程变得与测量设备的尺寸相当。这意味着气体分子在没有相互碰撞的情况下长距离移动，从而使压力的评估更加准确。knudsen gauge的一个关键特征是其使用热导率原理。该仪器由一个小的加热丝或线组成，当气体分子与其碰撞时，它们会将热量从丝上转移走。热量损失的速率与气体分子的数量直接相关，这使得可以计算出压力。这一原理使得knudsen gauge在其他类型的仪器可能因极低的压力条件而失效的环境中尤其有用。此外，knudsen gauge相较于传统压力测量设备具有多个优势。例如，它不太受所测气体类型的影响，使其在不同应用中具有多功能性。此外，它提供实时测量，允许科学家和工程师即时监测压力变化。这种能力对于在特定真空水平下维持实验的成功至关重要。knudsen gauge的应用在各个领域广泛存在。例如，在半导体行业，维持超高真空条件对于微芯片的制造是必要的。knudsen gauge帮助确保环境保持无污染，从而生产出更高质量的产品。同样，在表面科学领域，研究人员使用knudsen gauge研究材料在真空条件下的特性，为纳米技术和材料科学的进步做出贡献。尽管有许多优点，knudsen gauge也有其局限性。它需要仔细校准，并且对温度和其他环境因素变化敏感。因此，用户必须确保仪器得到适当维护和校准，以获得准确读数。此外，虽然在低压环境中表现出色，但在较高压力范围内可能表现不佳，因此需要使用补充测量设备。总之，knudsen gauge是真空技术领域的重要工具，在低压环境中提供准确可靠的压力测量。其独特的操作原理和多功能性使其在各种科学和工业应用中不可或缺。随着技术的不断进步，knudsen gauge的相关性可能会持续存在，帮助研究人员和工程师在日益复杂的世界中实现他们的目标。理解knudsen gauge的功能和应用对于任何参与真空技术的人来说都是至关重要的，突显了其在现代科学和工程事业中的重要性。