Liquid level measuring system and method

Abstract

A system and method for measuring the liquid level in a tank or container is provided. The system can have a sensor string comprising a plurality of analog output hall-effect sensors and a computer readable memory containing sensor string information, a float having a magnetic field and positionable relative to the sensor string, and a controller containing at least one processing unit, at least one memory and a sensor string interface for connecting the controller to the sensor string. The system can be operative to obtain the sensor string information from the at least one memory of the sensor string, obtain a preloaded waveform indicating the output of a sensor relative to the position of the float and approximate the position of the float relative to the sensor string using the normalized output of at least one of the sensors and the preloaded waveform.