No... I'm not missing the point.
I stated that there was temperature compensation available for the pH probe on an Apex.
I took your direct reply to me to mean that I was mistaken, that temp compensation was for the salinity probe and not pH.
My response was to point out that temp compensation *is* available on the pH probe.
I think if you play with that calculator your posted, using normal reef temperatures, you'll find that pH really doesn't change any meaningful amount, say for temps between 75 and 80 degree F. A hundredth of a point in pH swing is nothing.
Regardless... temp compensation is available for the Apex pH probe - how you use it is up to you.
[Edit: Wow! That was quite an "edit" to your original post! Reads entirely different now! That'll teach me not to quote posts when reponding! :beer:]