Sump Pump Float Switch Review by Comparison

For Submersibles at Pumps Selection

 

Review by Comparison

Float Switch for Submersible Sump Pump is important because

  • This is the mechanism that triggers the operation of the pump.
Without some kind of trigger the pump will not operate.
  • The tether and vertical float rely on rising of water to trigger the switch.
  • A diaphragm relies on water pressure to trigger the operation of the pump.
  • A microprocessor relies on sensing of water to trigger the operation of the pump.
  • A digital level controller relies on water pressure and current sent to relay to activate the pump.
  • An electronic sump pump water level controller relies on change of resistance between water and pump motor. Water has less resistance the higher (more volume) it gets in the pit; the pump has more resistance when the water is higher; this resistance is measured by the controller which triggers the pump to activate.
Shop Sump Pump
by Float Switch Type

Tether

Vertical - Manual

Vertical Magnetic

Vertical Adjustable

Diaphragm

Water Level Controller - Microprocessor, Water Sensor, Probe

Electronic Sump Pump Switch Controller
 

Review by Comparison

Float Switch for Submersible Sump Pump is important because

  • This is the mechanism that triggers the operation of the pump.
Without some kind of trigger the pump will not operate.
  • The tether and vertical float rely on rising of water to trigger the switch.
  • A diaphragm relies on water pressure to trigger the operation of the pump.
  • A microprocessor relies on sensing of water to trigger the operation of the pump.
  • A digital level controller relies on water pressure and current sent to relay to activate the pump.
  • An electronic sump pump water level controller relies on change of resistance between water and pump motor. Water has less resistance the higher (more volume) it gets in the pit; the pump has more resistance when the water is higher; this resistance is measured by the controller which triggers the pump to activate.
 
Advantages and disadvantages of each sump pump float switch type
  • A tether float is prone to get obstructed easiest, requires a larger pit, and fails quicker than the other float types; however, mechanically it is very simple.
  • A vertical float is the most common float-switch type and depending upon manufacturer is protected from obstruction, but like all other float-switch types eventually stops working.  The vertical floats may be manual or magnetic.  A vertical manual float is raised as the water rises and trips the switch. A vertical mechanical float trips the switch as a metal magnet located at the top of the float rod triggers the switch to operate.  
  • A diaphragm switch has no float and thus is more reliable than the tether or vertical float. It relies upon the pressure of the water to trigger the operation of the switch.
  • A microprocessor is switchless and motionless.  This is a great invention if the ground water has no deposits that will inhibit a proper reading on the water sensor. If you live in an area of the country where calcium carbonate concentration is high, the sensor will need to be cleaned frequently.
  • A Digital Level Controller has no moving parts.The water level is sensed by the degree of water pressure sensed by the diaphragm membrane and transmitted to a relay board. Relay boards do fail. Manufacturers offer a one year warranty.
  • An electronic switch controller has no moving parts to get stuck or hung-up. It relies on resistance rather than relay boards. It is more reliable.
 
Recommended switch for sump pump
  • The recommended sump pump switch is the Hydrocheck HC6000. Here are some of its features.
    • Proven reliability
    • Not affected by water chemicals or contaminates
    • Compatible with use of existing submersible sump pump. It can replace the sump pumps existing float switch without any rewiring or tools required
    • No rewiring, plumbing changes or tools required to install
    • Takes no additional pit space since sensors are attached to the discharge pipe
    • Lifetime warranty
  • We are using the Hydrocheck HC6000 and really like it. Read more details.
 

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