While a mature technology, the displacer transmitter remains a highly relevant tool for specific industrial challenges. Displacer technology has been traditionally used for level, interface and density measurement Displacement transmitters should be suitable for interface level measurement if specific gravities differ significantly and the change in specific gravity due to composition or temperature.
Displacer type level Transmitter - Instrumentation basics
One important requirement is that the displacer always be fully submerged.
Displacer level instruments exploit archimedes’ principle to detect liquid level by continuously measuring the weight of an object (called the displacer) immersed in.
The transmitter measures buoyant force changes. Reliable displacer level transmitters for precise contact measurement in tanks Ideal for pressurised, high temp, corrosive environments and hazardous areas. Commonly used liquid level interface measurement transmitters and sensors
Their working principle, selection criteria, and how to measure interface if emulsion or rag layer is present. Displacers are used for level, interface, and density applications, where the buoyancy of the displacer in the fluids is the primary measurement principle.
