Methods and system for scaleable liquid display and control

A system for displaying and controlling a level of a liquid contained in a tank, the level of the liquid measured using a sensing device, the system comprising:

• a user interface which allows a plurality of parameters to be modified, wherein the parameters include a lower display level, an upper display level, a first level set point, a second level set point, a third level set point, and a fourth level set point;
• a sensor interface which couples the sensing device to the processor, the sensor interface capable of accepting at least one of a plurality of different signal types for the sensing device;
• a processor, in communication with the sensor interface and the user interface, which scales the level in dependence upon the lower display level and the upper display level, wherein the level of the liquid is linearly interpolated between the lower and upper display levels to increase display sensitivity;
• a first display, in communication with the processor, which provides a vertically oriented, graphical bar-chart display of the level of the liquid scaled in dependence upon the lower display level and the upper display level, wherein the graphical bar-chart display of the level is in a predetermined color, the first display further graphically displaying the first, second, third, and fourth level set points in corresponding colors distinguishable with regard to the predetermined color;
• a second display, in communication with the processor, which numerically displays the level of the liquid;
• a third display, in communication with the processor and located proximate to an upper portion of the first display, which numerically displays the upper display level;
• a fourth display, in communication with the processor and located proximate to a lower portion of the first display, which numerically displays the lower display level;
• a first actuator, in communication with the processor, which is activated when the level of the liquid exceeds the first level set point;
• a second actuator, in communication with the processor, which is activated when the level of the liquid drops below the second level set point;
• and
• a third actuator, in communication with the processor, which is activated when the level of the liquid drops below the third level set point and is deactivated when the level of the liquid exceeds the fourth level set point for maintaining the level of liquid between the third and fourth level set points.