传统的玻璃密度计在数据处理和远距离检测方面不能满足在线的要求。近年来,国内外研制出新型密度检测系统(如放射性同位素密度计,超声密度计,振动密度计等)由于价昂、使用要求高,难于在工业生产过程中推广应用。为此,我们用电阻应变式传感器在检测介质密度方面作了探索。实践证明,采用沉子法密度传感器来检测介质密度,不论在检测精度,分辨能力和恶劣环境的适应性方面都具有其优越性,本文就有关问题做以介绍。 Traditional glass densitometers can not meet online requirements for data processing and remote sensing. In recent years, new density detection systems developed at home and abroad (such as radioisotope density meter, ultrasonic density meter, vibrometer, etc.) are expensive and difficult to be popularized in industrial production. For this reason, we have explored the medium density with the resistance strain sensor. Practice has proved that the use of Shen sub-law density sensor to detect the density of the medium, regardless of the detection accuracy, resolution and harsh environment adaptability has its advantages, this article on the issue to be introduced.