ECD L20, Инструкция по эксплуатации, Страница: 16 / 20

13
Error Displays and troubleshooting
Main
Display
Possible Causes
Corrective
Actions
“Er1”
●
“Stand” was pressed before the electrode
and ATC/Temp probe settled to /-
1.5 pH of the buffer value.
●
pH electrode offset is greater / less than
+/-1.5 pH.
●
pH electrode is faulty.
●
Press “Clear” key, allow sufficient time
for the electrode and ATC/Temp probe
to stabilize, re-press “Stand” key to start
the calibration procedure.
●
Replace the buffer and /or the pH
electrode. Press “Clear” key to
recalibrate meter.
●
Replace electrode.
“Er2”
●
“Slope” was pressed before the electrode
and ATC/Temp probe settled to within
30% of the buffer value.
●
Buffer 4.00, 4.01, 9.18 and 10.01 is not
correct.
●
pH electrode slope is off by more than
30% of ideal slope.
●
Allow sufficient time for the electrode
and ATC/Temp probe to stabilize, re-
press “Slope” key to continue the
calibration procedure.
●
Check if the correct buffer is used.
●
Replace the buffer and /or the pH
electrode. Press “Clear” key to
recalibrate meter.
“Er3”
Temperature is out of the 0.0 to 60.0°C
range.
Bring the buffer temperature within
range.
“over”
Or
“undr”
●
Measured pH is out of the 0.00 to 14.00
pH range.
●
Measured mV is out of the 1999.9 to
1999.9 mV range.
●
Measured temperature is out of the 0.0
to 100.0°C range.
●
Bring sample pH into the correct
measuring range.
●
Bring sample ORP into the correct
measuring range.
●
Bring sample temperature into the
correct measuring range.
[Note: If the meter still does not perform normally after the above measures are taken,
call ECD representative.]