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本文在的基础上,进一步分析了用微波谐振腔调谐振荡器方法,测量低温流体介电常数的工作原理,给出了其测量误差与测量速度间的关系式,进而求出谐振腔的最佳Q值与延迟时间的关系,为谐振腔的设计提供了重要的依据。 此处,文中还指出液体以速度ν通过谐振腔,对测量产生的相对误差为ν/c(c为光速)的数量级,因此它完全适于测量快速流动的液体而不带来明显的误差。
On the basis of this paper, the working principle of the microwave resonator tuning oscillator method to measure the dielectric constant of the cryogenic fluid is further analyzed. The relationship between the measurement error and the measurement speed is given, and then the best resonant cavity The relationship between the Q value and the delay time provides an important basis for the design of the resonant cavity. Here, it is also pointed out that the liquid passes through the cavity at speed v, and the relative error in measurement is on the order of ν / c (c is the speed of light), so it is perfectly suitable for measuring fast flowing liquids without significant errors.