Optical Level Switch Working Principle
Optical level switch uses the principle of total reflection in a prism. Reflection or penetration, is the basis of the level alarm output. When the sensor is surrounded by air,...
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How a Level Switch Works
Liquid level switches detect liquid levels or interfaces between liquids such as oil and water, or liquid and solid interfaces. Liquid level switches are used in a number of liquid...
Basics of Switches & its applications
For decades, process instrumentation specifiers have faced the decision whether to use a switch or a transmitter for a given application. Either type of instrument can be used to effectively control...
Float level switch Principle
Some level switches use a float to sense the level of a liquid surface, actuating an electrical switch by the motion of the float. The electrical schematic symbol for a...