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Calibration
Menu
3.4
Keypad
Key
Functions
⚫
Power on/off
⚫
The meter will automatically shut off 10 mins after last key press
⚫
In measurement mode: press to enter calibration mode
⚫
In calibration mode: press to exit calibration mode
⚫
In measurement mode: long press to switch measurement units NTU-FTU
⚫
In measuring mode: Short press the key to perform single-shot measurement; long
press the key to perform continuous measurement
⚫
In calibration mode: press the key to confirm the calibration.
⚫
In calibration mode, press the key to select standard solution.
3.5
Power Supply
1. The instrument adopts 4 pieces of AA alkaline battery. Make sure there is no mixture of new & old
batteries or different models of batteries.
2. Battery capacity indication
Battery capacity icon: , please replace new batteries when
Diagram- 3
①
— Calibration mode
②
— Standard values
③
— Operation guide
④
— Finish calibration indicator
