Hanna Instruments HI931 - User Interface Description; Keypad Layout and Function; Display Screen Information

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USER INTERFACE
Keypad
The titrator’s keypad has 27 keys grouped in five categories, as follows:
Display
The user interface contains several screens. In each screen, many information fields are present at the same time. The information is
displayed in an easy-to-read manner.
Virtual option keys describe the function performed when the corresponding option key is pressed.