Ultra high purity pressure transducer is a general term applied to devices which convert changes in water pressure and hence water level into changing electrical signals which can be recorded remotely from the point of measurement. There are several different types of transducer distinguished in the way each converts the mechanical pressure signal into an electrical output. It is used for pressure measurement applications that require exceptional insensitivity to environmental extremes, including high-purity gas delivery systems, gas cabinets, and semiconductor process tools.