New ? IR meter BA1020

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Thanks wolf, the negative spring slide on mine at least is hard to push in at much of an angle. My other criticisms still stand the leads are too short.
Later
floyd
 
Stingray said:
what is the quality of B1020 plastic vs RC3563?
I have RC3563 and the build quality is very good (unfortunately the accuracy is very low)
VR1220h - build quality - is cheap, it seems as similar formfactor, but the build quality is low (Accuracy is better than RC3563, but measurement speed is very very low)
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It appears to me to be identical. Just a different color. I am still waiting for my resistors to check and verify reading between the two.
How are you judging accuracy with the Rc3563?
 
Mandrake said:
How are you judging accuracy with the Rc3563?
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see here
I compared voltmeters RC3563 vs Er-1D vs Fluke289 - it was not very accurate for whole range, but very good for 1-2 cells (3-8 Volts).
Also I copied from the video above the measurement of BA1020 vs Agilent, unfortunately just below 20V
 

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Thanks for that. For the BA1020, that sort of inaccuracy does not mean much to me. Though it is good info.
I find that the readings I get from the MC3000 (after calibration) are good enough for what I am doing.

For now, I am concerned more about IR measurements.
For trying to correlate the readings with my MC3000 readings. Basically to try to use all of my previous data taken over several years, used for determining cell health.
I know that raw readings will be considerably different. But if I can figure out some kind of relationship it will keep me from starting all over.
 
Sure and more importantly one is a DC measurement and the other AC Impedance.
But what the raw numbers mean can be compared. If I have long term data that shows that cells are marginal when I see readings of (just for example) above 70 mOhms on the MC3000 that a cell should be retired. Then I find that cells above 35 mOhm with the BA1020 are in the same category, I can draw similar conclusions and see trends using either. But obviously I will need to gather a whole new data set to do this. Anyway, that is why I used the word correlate and not compare. Though even there, I think with enough data and experience I should even be able to compare the numbers. Even if only to see trends. But yeah, I agree, I can't expect to ever get to the point of counting on 50 mOhms on one being 24 mOhms on the other. Too many variables, including SOC.
 
I did receive my BA1020 and the preliminary quick tests I did seem to indicate a reasonable accuracy.
I will report more extensive results in the near future.

Wolf
 
Wolf said:
I did receive my BA1020 and the preliminary quick tests I did seem to indicate a reasonable accuracy.
I will report more extensive results in the near future.

Wolf
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can BA1020 use software from RC3563?
 
Wolf said:
I did receive my BA1020 and the preliminary quick tests I did seem to indicate a reasonable accuracy.
I will report more extensive results in the near future.

Wolf
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Good to hear. I will be curious to read about whether you figure out the calibration process. It doesn't appear as though it allows manual calibration. Rather, I think it wants two standards (two voltages at 5 and 15 volts and two resistors) that is uses to do some kind of self calibration. Maybe OK, but it requires one to have the specific value resistors and a voltage source with 5 and 15 volts available. Of course, that also means that the accuracy of the calibration not only depends on the meter's internal process but the precision of the resistors and power supply voltages.
 
Mandrake said:
at 5 and 15 volts
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It seems similar to VR1220H - calibration process require special nominals of resistors and U.
15 volts are pretty small, interesting about the accuracy near 100V, chinese video did not show high voltage measurement.
 
Stingray said:
can BA1020 use software from RC3563?
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It will not. The RC3563 just sends out serial data when you enable the usb port.
From there it was easy to capture and format it in python.
The BA1020 does not. You need to have the software loaded and then open the com port on the software.
Sniffing the serial/com port it appears that the software sends a request for data and the BA1020 responds with what is loaded in the register.
I will post the results from my com sniffer later maybe someone with better serial port communication knowledge can tell me what command to send. Of what I can tell so far the initialisation string is M00.
If you want the software I have it downloaded here. https://1drv.ms/f/s!AmNMFw8cEOSHhvgpIq925wI9BDqObg?e=74khxu

Wolf
 
Mandrake said:
Of course, that also means that the accuracy of the calibration not only depends on the meter's internal process but the precision of the resistors and power supply voltages.
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Very true, good thing I have an Agilent 34401A 6½, a GWINSTEK PSP-2010 and a multitude of AD584, TL431 and LM399 High Precision Voltage Reference 2.5V / 5V / 7.5V / 10V Sources. Additionally several Precision Resistance Reference Boards 0.1%, +/-25ppm/°C.
I will test the BA1020 with the factory settings first and then move on to the calibration process.

Wolf
 
Wolf said:
I wonder if the BA1020 software will work?
I'll give it a shot when I get home.
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The BA1020 software does not work with the YK-VR1220H.
Once I get some time I will see if I can figure out the communication parameters.

I know they are both MODBUS and I am by no means a MODBUS expert. However by the time I'm done I may be.:rolleyes:
Wolf
 
I have been partially successful identifying the registers to read from the YK-VR1220H.
There is a slight discrepancy of what the meter shows and what is in the register. It may be I need to refresh the register IDK.
Wolf
1705671940742.png
 
What do you guys think about BA1020? For example if we compare it with RC3563?
I see that RC3563 probes are better, accuracy according to the video BA1020 is better.
For example, if you measure small resistances below 1mOhm and set it to 0 are they about the same?
 
Hello guys. Somebody able altered BA1020 software to work with RC3563?
 
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