Float Switches

1
The Basics of Float Switches

• Here is where your presentation begins

2
Introduction

• A float switch is a kind of contact liquid level
  detector that uses a float to regulate a switch.
  Float switches are generally used to control
  different devices such as alarms and pumps when a
  liquid level increases or falls to a specific
  point.

3
Types Of Float Switches 
01
02
There are two types of float switches

• Cable-Suspended Float Switches

• Stem-Mounted Float Switches

4
Stem-Mounted Float Switches
Stem-mounted float switches constrain the
movement of the float to up-and-down along a
stem, and operate on a one-float-one-level basis.
Stem-mounted float switches can be as simple as a
single-point switch with a single float on one
stem or they can be complex multi-point switches
with as many as seven floats on a single stem.
Single-point float switches can be found in both
vertical and horizontal orientations.
5
Cable-Suspended Float Switches
Cable-suspended float switches, on the other
hand, are as free as the cables they are attached
to. If you dont tether a cable-suspended float
switch, it will go with the flow, as far as the
cable allows! While cable-suspended float
switches are all mechanically pretty equivalent
(float and cable), they can be much more
electrically diverse than stem-mounted float
switches.
6
(No Transcript)
7
How Stem-Mounted Float Switches Work
Stem-mounted float switches use a magnet in a
float that passes over the reed switch with the
rising or falling action of the liquid, either
opening or closing the switch. On horizontal
stem-mounted float switches, the float rotates
away from the reed switch on a hinged arm, rather
than free-floating on a central stem.
8
How Cable-Suspended Float Switches Work
Cable-suspended float switches have both the
magnet and the reed switch located in the float.
As the float rises and falls with the liquid
level, the magnet moves closer to or further away
from the reed switch, causing it to open or
close. In both cases, the changing liquid level
is translated to an electrical on-off signal by
the movement of the magnet.
9
Conclusion 
Float switches are also helpful for reducing
complicated automation. Here I have discussed
about the Basics of Float Switches and their
types. If you want to find out how to integrate
float switches into your control system, do
follow the link.
How Do Float Switch Work
10
Thank You