LaMotte Tracer Dissolved Oxygen Meter - Manual (Page 18)

TROUBLESHOOTING
Problem Cause Action
Power on but no display Batteries
Batteries
Batteries Insert batteries or remove tab
Verify correct polarity
Replace low or dead batteries
“BAT” message Batteries Replace weak batteries
Unstable readings Insufficientor
depleted
electrolyte Replace electrolyte, and
membrane cap assembly if
needed
Readings drift down Insufficient
stirring Stir sample with meter or use
stirring plate
Slow response Dirty or
damaged
membrane Replace electrolyte and
membrane cap assembly
Electrode can not be
calibrated Depleted
electrolyte
Dirty or
damaged
membrane Replace electrolyte and
membrane cap assembly
Replace electrolyte and
membrane cap assembly
Electrode can not be
calibrated after replacing
electrolyte and membrane
cap Dirty probe.
Cathode is
not a shiny
gold color. Clean cathode with cleaning
cloth or cleaning paper
Sample reading
is frozen Meter is in
HOLD mode
Meter is
locked Release HOLD
Remove or replace batteries
and restart. Stored readings
will be lost
18