The difference between water flow sensor and water flow switch |
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A.The definition of water flow sensor ,water flow switch and their
difference
Water flow
sensor is the water flow sensing instrument which induce water flow rate and
output pulse signal,current,voltage and other signals.The signal output is in
linear proportion to the water flow rate.There are relevant conversion formula
and comparision curve.It can fulfill water control management and flow
calculation.It can be used as water flow switch,also it has the function of
flowmeter for flow accumulation calculation.Water flow sensor is mainly used
with control chip,singlechip and even PLC.The water flow sensor has the
functions of accurate flow control,setting action flow circularly,revealing
water flow and flow accumulation calculation.
Water flow
switch is the water induction switch that according to the supervision of
whether there is water flow to output switch signal.There are normally open and
normally closed types.Water flow can be monitored by it.Water flow switch is
usually used with intermediate relay to build water control system.The
advantages of water flow switch is simple and convinent in usage and no power.
In
conclusion,comparing to water flow switch,water flow sensor has more accurate
usage and wide application.The common features of both are: output signals by
inducing water flow,have the function of inducing magnetic field.
B.Matters needing attention in application of water flow sensor and water
flow switch
Matters
needing attention in application of water flow sensor:
1.
When a magnetic
material or a material generates magnetic is close to the sensor,the characteristic
may change.
2.
In order to avoid
particles,debris into the sensor,the sensor inlet must be installed filter.
3.
The installment of
water flow sensor must avoid strong vibration and shake environment,avoid
affecting the sensor measurement accuracy.
C.Matters needing attention in application of water flow switch:
1.
The installation and
use of the water switch shall avoid the places with strong vibration and shake
so as to avoid the misoperation of the water switch.
2.
When the magnetic
material or magnetic force is generated on the flow switch device near the
water flow switch, which may vary.
3.
In the process of
installation and use, be sure to cooperate with the relay (power under 3W), so
as not to burn the reed pipe because of the small switch power.
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