Liquid metal level measurement techniques

Various types of liquid metal level measurement are used in various applications. Liquid metals have excellent electrical properties which can also be utilized for level measurement. Many types of level measurement exist such as pressure transducers, floats, inductive devices, resistance tubes, visual etc. Many liquid metals have corrosive or toxic nature. This mandates indirect or non-intrusive means of measurement. So techniques are being experimented even now for the easy attainment of accurate measurements. This paper gives a brief description on various level measurement techniques used to measure the level of liquid metals. Detailed description about a mutual inductance based level probe is also presented in this paper.