Are the different length rods interchangeable, or are both the CS658 and CS659 needed?
Because of the thread type used for the two sensors/rods, it is physically impossible to interchange the rods.
- The 20 cm rods used with the CS658 are not compatible with the CS659.
- The 12 cm rods used with the CS659 are not compatible with the CS658.
If measurements are needed for both depths, both the CS658 and CS659 must be used.