Dwyer Series 190 Liquid Level Switch-Control

Features:

• Extremely versatile design
• Displacers are suspended on a coil spring and do not float on the surface of liquids and are unaffected by turbulence or pressure
• Excellent for applications with viscous or dirty liquids

The Series 190 Liquid Level Switch-Control is a top mount displacer type level control. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. This Series is offered in a range of cable lengths, specific gravities, circuit types and enclosure ratings. Mercoid Displacer Controls use displacers that do not float on the surface of liquids, but are suspended on a coil spring. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. This allows the spring to move the cable and armature upward, actuating the hermetically sealed switches. Because they work on a different principle than float type liquid level controls, displacers are not affected by turbulence, or pressure, and are excellent for applications with viscous or dirty liquids.

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