A level transmitter is an instrument used to measure and transmit the level of a liquid or solid material in a tank or vessel. The level transmitter typically uses a sensing element, such as a pressure sensor or a float, to measure the level of the material, and converts this measurement into an electrical signal that can be transmitted to a control system or display. Level transmitters can be used to measure the level of various types of materials, including water, chemicals, and powders, and are used in a wide range of applications, including industrial process control, environmental monitoring, and tank level monitoring. They are essential for ensuring accurate and reliable level measurement in many industries, including oil and gas, chemical processing, and water treatment.