Instruction Manual

6
POWER SUPPLY
The pen is powered by 4 LR44 batteries.
Check the batteries when:
• Using the unit for the rst time
• The low battery indicator appears
on the LCD
• The pen will not turn on
LCD DISPLAY
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LCD DISPLAY
Hold data on the LCD
Calibration Mode
Low battery indicator
Unit of conductivity
Measured value
Unit of TDS and
Salinity
Unit of liquid
temperature °C or °F
Temperature reading