Self-Diagnosis; Error Message - Mettler Toledo EL20 Bedienungsanleitung

4.7

Self-diagnosis

Press and hold Read and Cal simultaneously until the meter displays the full screen. Each icon blinks
one after the other. This way you may check whether all icons are correctly shown. The next step is to
check that the keys are functioning correctly. This requires user interaction.
When blinks, five icons are displayed. Press the five keys in any order. Each time you press a key an icon
disappears from the screen, continue to press the other keys until all the icons have disappeared.
When the self-diagnosis has been completed successfully, PAS appears. If self-diagnosis fails, error
message Err 1 appears (see section 4.8).
Note:
You have to finish pressing all five keys within two minutes, otherwise Err 1 appears and you will have
to repeat the procedure.
4.8

Error message

Error 0
Error 
Error 2
Error 3
Error 4
Error 5
Error 6
Error 9
METTLER TOLEDO Education Line pH meter
Five_pH_edu.indb 11
Memory access error
Self-diagnosis failed
Measured values out of range
Measured buffer temperature
out of range (5 ... 40 °C)
Offset out of range
Slope out of range
Meter cannot recognize the
buffer
The current data set has
already been stored once
Operating the pH meter
Reset to factory settings
Repeat the self-diagnosis procedure and make
sure that you finish pressing all five keys within
two minutes.
Make sure that the electrode wetting cap has
been removed and the electrode is properly con-
nected and placed in the sample solution.
If no electrode is connected, put the shorting plug
in the socket.
Keep the buffer temperature within the range for
calibration
Make sure you have the correct buffer and that it
is fresh.
Clean or replace the electrode.
Make sure you have the correct buffer and that it
is fresh.
Clean or replace the electrode.
Make sure you have the correct buffer and that it
is fresh.
Check that the buffer has not been used more
than once during the calibration.
A measurement can only be stored once. Perform
a new measurement to store a new data set.

12.03.2007 15:08:48