25
ERROR DISPLAYS AND TROUBLESHOOTING
G
[Note:
If the meter still does not perform normally after the above
measures are taken, call
JENCO
representative.
]
Main
Display
Possible cause(s)
Corrective Action(s)
"Er1"
1.
“Stand”
was pressed before
the electrode and ATC/Temp
probe settled to /-1.00
pH of the buffer value.
2.pH electrode offset is
greater/less than +/-1.00 pH.
3.pH electrode is faulty.
1. Press
“Set/Clear”
key. Allow
sufficient time for the electrode
and ATC/Temp probe to
stabilize. Re-press
“Stand”
key
to start the calibration procedure.
2. Replace the buffer and/or the pH
electrode. Press
“Set/Clear”
key
to recalibrate meter.
3. Replace electrode.
"Er2"
1.
“Slope/Enter”
was pressed
before the electrode and
ATC/Temp probe settled to
within 30% of the buffer value.
2.Buffer 1.68, 4.00, 4.01, 9.18,
10.01 and 12.46 pH is not
correct.
3.pH electrode slope is off by
more than 30% of ideal slope.
1. Allow sufficient time for the
electrode and ATC/Temp probe
to stabilize. Re-press
“Slope/Enter”
key to continue
the calibration procedure.
2. Check if the correct buffer is
used.
3. Replace the buffer and/or the pH
electrode. Press
“Set/Clear”
key
to recalibrate meter.
"Er3"
In pH calibration mode,
temperature is out of the 0.0 to
60.0 °C range.
Bring the pH buffer
temperature within range.
“Er4”
In ion calibration mode, the
slope (mV difference between
two consecutive points) is out
of the 15 to 90 mV range.
1. Replace the standard
solution and/or the ISE.
2. Recalibrate meter.
“Er5”
In ion calibration mode, the end
user exited the calibration
mode before completing the
number of pre-selected
calibration points.
Recalibrate meter.
"over"/
“undr”
1. Measured pH is out of the
-2.00 to 16.00 pH range.
2. Measured mV (RmV) is out of
the –1999.9 to 1999.9 mV
range.
3. Measured ion is out of the 0 to
2000 range.
4. Measured temperature is
out of the -10.0 to 120.0 °C
range.
1. Bring sample pH into the correct
measuring range.
2. Bring sample ORP into the
correct measuring range.
3. Bring sample ion into the
correct measuring range.
4. Bring sample temperature into
the correct measuring range.
