How to measure the PUMP Power Consumption instantly?(3 phase 220 V) 2

[morris more]

How to know the Power Consumption of the pump instantly ?
How to measure it ?
The electricity source is 3 phase and voltage is 220 V.
I want to build the relation graph between the flow rate and Power Consumption of the pump.

 

[TugboatEng]

A pair of current transformer, a current transducer, and a voltage transducer will provide the information to determine motor power consumption.

 

[Artisi]

Measuring the input at the motor terminals will give you the overall power consumption that includes the pump and motor inefficiencies, is this what you are looking for?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[LittleInch]

This information is readily found on the pump curve.

Most vendors will provide one if you've lost it.

What make and model of pump?

What's written on the pump itself?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[morris more]

Using a Clamp Meter ??
If there are three hot wires connect to the motor , I can clamp one of them and read the current and voltage by the multimeter.
Then how to figure out the power?

Or I need to buy the AC CLAMP POWER METER?

 

[LittleInch]

3 phase power can be a bit odd, but there are many online calculators.

what sort of pump is this?

Why can't you use the pump data sheet / pump curve?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[TugboatEng]

You can use a clamp on ammeter and assume the other phases are carrying equal current. Measuring the current on two legs simultaneously will give a more accurate result.

 

[Strong]

https://www.bing.com/search?q=power...sc=5-30&cvid=29c6cd18dc6345b5b67e86837b3c96e8

If you want pump power, then you could measure shaft speed and torque with a strain gage telemetry system. I recommend Binsfeld system.

Walt

 

[Compositepro]

http://www.loadcontrols.com

for power meters. Due to power factor changing greatly with load, current is not a very good measure of power.

 

[morris more]

Is it okay to Use the AC Clamp Power Meter like this ?

https://www.youtube.com/watch?v=sIitu8TIhZs&t=107s

 

[Artisi]

Guess you can use what ever you like if your happy with it, and as you don't seem to take notice of member comments by a simple response to their input, why should we be concerned.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)