TROUBLESHOOTING
Problem
Check
Action
Power on but no
display
Batteries
Insert batteries
Verify correct polarity
Replace batteries
Unstable readings
Electrode
Immerse probe more deeply in sample
Remove air bubbles caught under
electrode
Replace electrode
Unexpected results
Standards Calibrate with fresh standards
Calibrate with standard in range
similar to sample
Display frozen
HOLD
function
Press MODE/HOLD button or turn
meter off
Button
response
Remove then reinsert batteries
(stored data will be lost)
Replacing the Electrode
1.
Unscrew and remove the electrode collar. Turn collar
counter-clockwise.
2.
Gently rock the electrode side to side, while pulling it away from the
meter, until it disconnects from the electrode socket.
3.
To attach an electrode, align the slots and carefully plug the
electrode into the meter socket.
4.
Firmly tighten the electrode collar to create a seal with the rubber
gasket between the electrode and the meter.
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