7. Battery Replacement & Troubleshooting
Replace the battery when the symbol appears on the display.
(1) Open the cover in the back of the main body and pull out the used battery. Insert a new battery (LR44) paying attention
to the polarity (po), negative(-)). Always replace each of the 3 cells with new ones at the same time.
(2) Close the cover and turn on power to confirm whether the batteries were replaced correctly.
Status
Cause
Corrective Action
LCD
display
dim
or
not
working.
Exceeded
service
life
of
batteries
Replace batteries.
Contamination of sensor part
Wash the sensor part with neutral detergent and rinse fully with
water.
Wipe it softly with a dry cloth and tissue.
Unstable readings
8. Calibration ( Salt Concentration )
Calibration is only needed when measurements become abnormal.
1> Press the Power button (ON/OFF)
2> Press the
“
MODE
”
button. Put the sensor into 2% NaCL calibration solution
(Make sure the sensor does not contact bottom or sides of the calibration sample)
3>
While the sensor is in the solution, press down
”
HOLD/CAL
”
button for 3 Sec., then
‘
CAL
’
will be displayed
on LCD with the beep. Wait for 5-10 Sec. without pressing any keys
4>
After 5-10 Sec. 30ppt will be displayed.
5>
Calibration is complete.
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