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Ammonit News 10/2017

New: Ammonit Verify Service ( for online verification of digitally signed CSV files with measurement data.


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Dear Reader,

Do you use the option to digitally sign the data files generated by your Meteo-40 data logger or AmmonitOR? A valid digital signature indicates that the file was created by a known sender (authentication) and that the file was not manipulated on transit (integrity). The MEASNET guideline for wind resource assessment demands highest data quality. In order to fulfil those requirements we highly recommend using the data security features on Meteo-40 and AmmonitOR.

So far you had to use additional software to verify the digital signature. To make the verification process more convenient for you, we developed the Ammonit Verify service ( This service is free of charge and online available without any registration. The highlights are:

  • Immediate data processing after file upload
  • No storage of data files
  • No registration required
  • No installation of any software required
  • Free of charge
  • Online service 24/7 available

Give it a try! You only need to upload the matching data and signature file. Ammonit Verify indicates immediately the validity of the signature. Verifying the data integrity has never been easier.

Did you use the Gpg4win software to check the digital signature so far? You can still use it. Ammonit Verify is a further option to check the digital signature.




How to use Ammonit Verify

You do not need to register for Ammonit Verify. You do not need to install any software on your computer. You only need the data files and the signature files, which you have received from your Meteo-40 data logger or AmmonitOR.

  • Open your browser and go to
  • Upload the files, which should be verified, e.g., data file D123456_20171010.csv and the matching signature file D123456_20171010.csv.sig or D123456_20171010.csv.gz and the matching signature file D123456_20171010.csv.sig
    Note: All files start with the serial number of the data logger. The base names must be equal. Signature files are indicated with .sig. Data files can be .csv or compressed csv.gz
  • After uploading the files, Ammonit Verify indicates the validity of the file: green symbol shows data integrity; red symbol shows invalidity of the signature.

Ammonit Verify does not store any of your uploaded files. The files are immediately deleted after data processing.For further details on Ammonit data security refer to our website.

We look forward to hearing your comments on our new service.


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Ammonit Measurement GmbH

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