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2. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float. Another common type is a float that ...

3. Sump pump - Wikipedia

   en.wikipedia.org/wiki/Sump_pump

   Pressure switches are typically factory set and not adjustable, while float switches can be adjusted in place to set the high and low water levels in the sump basin. Another option is a solid state switch utilizing field-effect technology, which can turn on and off the pump through use of an internal switch and a piggyback plug.

4. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   The choice of float material is also influenced by temperature-induced changes in specific gravity and viscosity – changes that directly affect buoyancy. [5] Float-type sensors can be designed so that a shield protects the float itself from turbulence and wave motion. Float sensors operate well in a wide variety of liquids, including corrosives.

5. Franklin Electric - Wikipedia

   en.wikipedia.org/wiki/Franklin_Electric

   Another early Franklin success was the Submatic sump pump. The Submatic was sealed in a unique stainless-steel casing designed to automatically sense when water was rising and turn on the motor. With the Submatic, an external float switch was no longer needed, and the motor could be mounted out of sight beneath the floor level.

6. Submersible pump - Wikipedia

   en.wikipedia.org/wiki/Submersible_pump

   A 0.75 HP bore-well submersible pump which had been used to pump groundwater One style of submersible pump for industrial use. Outlet pipe and electrical cable not connected. A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in ...

7. Float (liquid level) - Wikipedia

   en.wikipedia.org/wiki/Float_(liquid_level)

   Stainless Steel would rapidly corrode in chromic acid, which is why one would have the option to go with a PVDF float, which is a material with great chemical resistance to chromic acid. [ 3 ] Thermoplastic level floats are a great alternative to some other forms of level sensors such as ultrasonic or radar when dealing with corrosive chemical ...