Pneumatic Level Controller
Field-selectable between snap and throttle level control (span of levels vs holding consistent level). Also, field reversible between direct and indirect output signal. These controllers are great for interfacing (sensing and holding a level between two different specific gravity liquids in a tank). Several different displacer options available to handle an array of different possible conditions: small differential liquid specific gravities, high temperature, corrosion, large span, small tank diameters, and small access openings.