To
design an automatic control of maintaining a level of a tank, First thing to
consider from two option – Keep the tank empty – for dirty water, dirty wastage
liquid. Keep the tank filled– for fresh water, fresh liquid.
Floating switch
Components:
Level switch (a simple floating switch will do), Relay & A simple pump
motor.
Two
types of float switch is constructed –
Filling
– switched on when level is low and switched off when level is high.
Emptying
– switch on when level is high (pump out); switch off when level is low.
Signal
Only
two level signal, Low level - also additional (very low level). High level (also
very high level). An alarm system or start, stop of motor is actuated by this
two level signal. Say if we consider fresh water tank, when water in tank is in
low-level float switch is in clinging downward sends low-level signal and a
motor starts to filling water. After reaching certain level float switch sends high-level
signal and an arrangement switch off the motor.
However,
if we consider dirty water tank, it must be kept at low level certainly. Then
after reaching high level in dirty water tank, float switch send signal that
starts a motor. At reaching low level, float switch again sends signal that
initiates the stopping of the motor.
No comments:
Post a Comment