It is possible to save the effective sensor lengths as part of the 2G output format, with the column headings "X responce", "Y responce", and "Z responce" (sic). This doesn't seem to be commonly done, but if these fields are available it could remove the need to manually enter sensor lengths in the Preferences dialog.
One problem with these values: they are only written to two decimal places in the DAT file, whereas in the 2G software they are stored to (at least) four decimal places. So sensor lengths read from the file will be slightly less accurate. However, the difference would be fairly small (<0.2% for a sensor length of 5cm) so it probably won't make much difference in practice.
It is possible to save the effective sensor lengths as part of the 2G output format, with the column headings "X responce", "Y responce", and "Z responce" (sic). This doesn't seem to be commonly done, but if these fields are available it could remove the need to manually enter sensor lengths in the Preferences dialog.
One problem with these values: they are only written to two decimal places in the DAT file, whereas in the 2G software they are stored to (at least) four decimal places. So sensor lengths read from the file will be slightly less accurate. However, the difference would be fairly small (<0.2% for a sensor length of 5cm) so it probably won't make much difference in practice.