R(R(CW))

You should know the history of your system

model the ssytem

write equivalent circuits  - go on thinking if it does not  fit   -  CPE  is an escape route   do not try in the beginning

Generally few issues must be observed,

1. Test your data resulting from the experiment with Kramer-Kronig transform. This will allow to check if the set is internally coherent. 

2. The  data at the first glance exhibit a strong time constant dispersion. This may originate from the system itself or from the drawbacks of the experimental setup. The later ones should be if possible eliminated physically not numerically.

3. Please give more details about the experiment. Blind fitting usually does not end well.

good

Your only problem is that you haven't entered the data in the correct order. EIS analyser uses the format: Re(Z), Im(Z), Frequency. Make sure you export your data, e.g. from Excel, as a txt file in the correct order. Then you can select the proper model from the model library - even if you have to test every single one of them if you're not certain. Try multiple fits for eaxh one, until it converges. Then save your fitted data from the menu, and work with them in your preferred software (they will be saved in the same format).

Thanks for the comentary!

Dr K Ganga Prasad

hello, I'm agree with Thanos Tiliakos .

with best wishes!

Hello ,

I am fitting data using EIS analyzer but whenever I fit the circuit floating point error displays. How to solve this issue ?

Hi

How to convert CSV file to txt file for fitting EIS spectrum using EIS spectrum analyzer.

Hi J. Lavanya,

please find this link below for fitting using analyzer

https://youtu.be/90PrnyimFAc

Whenever I try uploading my data file which I have already converted to .eis, it still shows an invalid file. Please any help