From the Main Menu of the AquaCalc Pro:
The firmware version number is displayed on the second line below the Serial Number (S/N) and will look like:
The numbers following the “V” identify the firmware version.
The AquaCalc 5000 comes with either of two versions of firmware: The Basic (G) firmware or the Advanced (formerly known as the Professional Series) firmware (H). There may be several revisions within each version (such as G1-G7a or H1-H7a, etc.).
JBS Inst. 199x
When first turned on the Basic firmware will show:
G6 - Added New Standard 2 Rating Tables. Unfortunately introduced problems with counting.
G7a - Fixed counting problem introduced with G6. Added new counting algorithm that reduces turbulent flow resets. Contains a default 2:1 timing ratio from one revolution to the next which is not user selectable. If the time for a revolution is more than twice that for the previous revolution, the AquaCalc registers turbulent flow conditions and resets.
G7b - June 8, 2000 Added user selectable sensitivity to turbulent flow conditions with a 4:1 or 8:1 settings.
For older versions, there is no way to tell which revision you have. More recent versions will show the complete version number and letter:
Recent Advanced Revision History
H5 - Stable release available for several years
H6 - Minor bug fixes, including a random problem with loading station zero.
H7 - Added New Standard 2 Rating Tables.
H8a - Internal JBS version. Not released
H8b - June 8, 2000 Added user selectable sensitivity to turbulent flow, which reduces resets. Useful mostly with Pygmy meters. Contains a default 4:1 timing ratio and a user selectable “loose” ratio of 8:1 for conditions where you just have to measure. If the time for a revolution is more than 4 times (or 8 times) that for the previous revolution, the AquaCalc registers turbulent flow conditions and resets.User selectable 4:1 or 8:1 timing ratios.