Hanna Instruments HI 98188 Instruction Manual page 40

Press Modify.
Press ARROW keys to select internal interval then press Accept.
Press ESC to leave without changing.
Date/Time
Focus on the Date/Time item.
Press Modify.
Use / keys to select item. Use ARROW keys to change focused values.
Press Accept to confirm new setting, or ESC to leave without changing.
Time Format
Focus on the Time Format item.
Press functional key to change the option.
Date Format
Focus on the Date Format item.
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