Water level indicators work upon the fact that water is a good conductor of electricity, so water can be used to open or close a circuit. Whenever the water level goes up or down, different circuits in the controller send different signals. Save on manufactures the best level indicator in Chennai.The level indicator is now widely used throughout process industries as an effective level control device. It is often used in applications where a sight glass is either ill-suited based on process variables or is underperforming based on plant requirements. Level indicators are accurate, reliable, and cost-effective. They can be mounted horizontally on the side of a tank, or vertically on top or below a tank.