08-06-2014 11:26 PM
Hi there,
Im trying to measure the curren in ni usb 6009, but it is showing wrong values, how do i connect my connectoin just like measuring the voltage postive and negative? and what is the use of external shunt and internal shunt? please do help me, im very struck at it.
Solved! Go to Solution.
08-06-2014 11:36 PM
08-07-2014 09:16 AM
https://www.sparkfun.com/products/10643
you could buy something like this shunt resistor board and wire it in series with the device you want to measure the current through.
If you then measure the voltage accross this shunt resistor, you can calculate in labview the current flowing through the device that it is wired in series with: V(acrossshunt)=R(shunt value)*I(current) --> V(acrossshunt)/R(shunt value)=I(current)
-pat
08-08-2014 09:21 AM
Thank you. I have ACS712 i can do with that right for measuring the current ?
08-08-2014 09:33 AM
08-08-2014 09:34 AM
I have used similar devices from Allegro and they work fine.
The output voltage with no current will be half the supply voltage to the sensor and will change from there as the current varies.
Lynn
05-05-2019 01:17 PM
Hello, I am doing my final year project. I am using NI-6009, part of my project I am required to measure the current using ACS712 current sensor.
I am having some difficulty to calibrate the sensor to read the current as the current is being measured on the multimeter. I will be grateful to get some help
@johnsold wrote:
I have used similar devices from Allegro and they work fine.
The output voltage with no current will be half the supply voltage to the sensor and will change from there as the current varies.
Lynn
05-06-2019 01:03 AM - edited 05-06-2019 01:05 AM
Hi Mputu,
I am having some difficulty to calibrate the sensor to read the current as the current is being measured on the multimeter. I will be grateful to get some help
It would be so much easier to help when you would explain the problem you have!
And even more easier, when you would attach your current state of VI…
Are you working with Milon?
05-07-2019 03:06 AM
Good-day,
05-07-2019 04:16 AM