LaMotte 5-1936-01, Руководство пользователя

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19
6. TROUBLESHOOTING
Problem Cause Solution
No display Batteries not in place. a) Insert batteries.
b) Re-insert batteries in
correct polarity.
“---“ on
display
Meter does not have 2
point calibration
Perform 2 or 3 point ion
calibration.
“LO” displays
in the
DISPLAY
Low battery Replace batteries.
Unstable
reading
a) Electrode not deep
enough in sample
b) Dirty electrode.
c) Broken electrode
a) Place electrode deeper
in sample.
b) Clean electrode and
recalibrate.
c) Replace electrode.
“Er1” display Bu ff er value out of
tolerance
Use fresh pH bu ff er
solution and recalibrate.
Ensure correct pH bu ff er
group was selected.
“Er2” display Single point calibration Perform at least 2 point
calibration.
“Er3” display ISE slope not within the
speci fi ed tolerance
Check ISE is in good
working condition-refer to
ISE section of manual.
“Er4” display Calibration points not
within 1 decade
Ensure calibration points
are within 1 decade of
each other.
Not able to
calibrate
a) Display freezes
b) Faulty electrode
c) Inaccurate bu
ff er
a) Release reading by
pressing HOLD.
b) Replace electrode.
c) Replace expired bu
ff er
solutions.