I have been using acs723 for my project. Currently i bought the non on-amp version. Can i place op amp separately? Which op-amp can i buy for this?.
My acs723 current sensor have been calibrate. And it give high noise and not sensitive enough. i dont really measure the real current. But the output not sensitive if i compared it with other people project
How much current and what range of current are you measuring?
The ACS722 is very sensitive to external magnetic fields,. I see you have it mounted in close proximity to metal nuts and bolts and those can affect your readings.
Try mounting the sensor far away from anything metal or magnetic and see if that helps improve your readings.
Okay. can i just wrap it with some plastic? Or i need still need to mounting it away from magnetic? What is the proper distance for this?
My multitester is still broken and i order the new soon.
But from my last measurment with acs723. The range is about 9mA to 14mA. And it always give different starting point when i tried it in other day. Lets call it on monday it gives me 17mA on tuesday it gives 14mA.
NoOkay. can i just wrap it with some plastic?
YesOr i need still need to mounting it away from magnetic?
What is the proper distance for this?
Far enough away so that it no longer interferes with your readings, you will need to determine that distance experimentally.
The range is about 9mA to 14mA. And it always give different starting point when i tried it in other day. Lets call it on monday it gives me 17mA on tuesday it gives 14mA.
How are you sure the current doesn’t actually change day to day? Also, the sensor you’re using is for a larger current than you’re trying to measure so you’re loosing resolution in the noise. You’d be better off using the low current version of the sensor.
How are you sure the current doesn’t actually change day to day? Also, the sensor you’re using is for a larger current than you’re trying to measure so you’re loosing resolution in the noise. You’d be better off using the low current version of the sensor.
I am not really sure. It still have the same with amount of gasoline so i am pretty sure it will flow same current . the other version is out of stock and not avaviable in my country. Is there any alternative solution? Or can i just put op-amp separately?
You will need to duplicate the circuit used on the low current version of the sensor. See the schematic for the parts used and how they are connected.
I thinks that is impossible to me. I already tried it to distance the sensor from any other metal and magnetic. It giving less noise but still not sensitive. my multimeter is broken and i am ordering the new one. Can I Ask if the acs version with the amp version can do the job? For 10mA to 17mA. Do not they have the same specifications of sensitivity on 400mv/a??
Do not they have the same specifications of sensitivity on 400mv/a??
No, the low current version has an amplifier attached to boost the output of the sensor that changes the sensitivity.
You’re measuring a low current so you need the low current version.
Digi-Key has them and can ship worldwide.
Sorry i am just know the information from the datasheet. It have lack information. Can you tell me what is the specific mA change/ADC can detect. For example the normal version can read 1mA every 2 point of ADC input.
Hi i am back and i am using multimeter to testing the current on my motorcycle. And it give me around 50mA-120mA. For the ACS 723 give me ADC input around 524-511.
