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10-01-2012 10:27 PM

Is it same for flow switch and inverter in water pumps


Is it the flow switch being used to adjust the water consumption?
What is the difference compare with inverter in pumps?
And what's the function of the inverter during operation?
10-01-2012 07:49 AM
Top #2
10-01-2012 07:49 AM
The inverter is the electric motor control device for adjusting the motor frequency, speed and voltage, generally for pump applications is to control the flow and pressure. The inverter adjusts frequency according to the final pressure or flow needs, to determine the rotation speed of the pump.

The flow switch should not have this feature.
In water flowing, there is a micro switch inside flow switch will take action, open contactor will close and closed contactor will open.
10-02-2012 02:41 AM
Top #3
10-02-2012 02:41 AM
Flow switch function is:
1. detect whether the liquid flow in the conduit and whether the flow rate (flow rate, means the liquid flow pressure) meet the requirement, and output a on-off state signal by switching electrical contacts.
2.Equipment system determines the working condition of the piping system by detecting whether the signal or the control current flow from the switch (flow switch electrical contacts on/off state), then provide the corresponding control / run / measures;
3. For example, in water circulation pipe network system of central air-conditioning, the automatic sprinkler system of fire protection system, in those types of liquid circulation cooling system piping, it is very common to use a flow switch to detect the flow of the liquid.

Inverter control is comparing the measured pressure value with flow setting value to control motor speed, result in changes in pump output flow, then match the the actual value to the setting value gradually.
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