Float guided level switch is a most reliable instrument to sense the liquid level in the industry. It can be used with PLC, DCS, SCADA.
Top mounted level switches work on permanent magnet reed switch basis.The float has a magnetic mechanism within it and moves freely along the guide tube, which contains glass encapsulated hermetically sealed reed switches, located at preset positions. Float follows liquid level and magnetically actuates reed swith at preset positions to give a change over contact. Single / multiple switching is effected through single or multiple floats as required by application.
Level Switches should not be used for direct starting / stopping of pumps.
An external relay or contractor must always be used with the level switch.
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