Design and development of an electronic level transmitter based on hydrostatic principle

[Display omitted] •A simple low cost hydrostatic liquid level transmitter has been developed.•The theoretical equation describes the working principle of the proposed transmitter.•The experimental setup has been developed and tested over a range of 0–100 cm.•The static characteristic of the level transmitter follows the theoretical equation.•The transmitter characteristics are linear and repeatable under industrial range. Diaphragm is a pressure transducer which is used as a primary sensing element for hydrostatic liquid level measurement. In industry, it can be used as a local display unit. Diaphragm reading can be transmit to a remote location with the help of secondary transducer which converts the diaphragm displacement into an electrical signal. In this paper, a simple low cost hydrostatic liquid level transmitter has been developed with diaphragm as a primary transducer and Hall sensor as a secondary transducer. The theoretical analysis of the work has been presented in this article. The theoretical equation describes the working principle of the proposed transmitter. The experimental setup has been developed in the laboratory and tested over a range of 0–100 cm. The static characteristic of the hydrostatic level transmitter shows that the transmitter follows the theoretical equation. The experimental results reported in this paper show that the transmitter characteristics are linear and repeatable under permissible uncertainty range.