Maintenance; Error Message - OHAUS a-AB33M1 Mode D'emploi

Analyzer and Bench Meter

11. Maintenance

11.1 Error message

a-AB33PH, a-AB41PH and a-AB33M1 models:
Error Code
Error 3
Error 4
Error 5
Error 6
Error 7
(a-AB33M1)
a-AB33EC model:
Error Code
Error 3
Error 7
Note: If an error happens, the meter will beep 2 times to alert.
If the troubleshooting section does not resolve your problem, contact an OHAUS technical
support agent. For assistance in the United States, call toll-free 1-800-526-0659 between
8:00 AM and 5:00 PM Eastern Standard Time. An OHAUS Technical Support Specialist
will be available to assist you. Outside the USA, please visit our website www.ohaus.com
to locate the OHAUS office nearest you.
Table 11-1 Error message
Possible Cause
Measured buffer
temperature out of range
(<0 °C or >50 °C)
Offset out of range
offset > 60mV or < - 60
mV
Slope out of range
Meter cannot recognize
the buffer
Cell K value out of range
Table 11-2 Error message
Possible Cause
Measured standard
temperature out of range
(<0 °C or >35 °C)
Cell K value out of range
Possible Solution
Keep the pH buffer temperature within
the range for calibration.
Make sure the pH buffer is correct

and fresh.
 Clean or replace the pH electrode.
Make sure the buffer is correct

and fresh.
Clean or replace the pH electrode.

Make sure the buffer is correct

and fresh.
Check if the buffer has not been

used more than once.
Make sure the Cell K value set in

the menu is in compliance with
the cell K value of the electrode
you use.
The electrode may be broken or

expired, so replace the electrode.
Possible Solution
Keep the standard temperature within
the range for calibration
Make sure the Cell K value set in

the menu is in compliance with
the cell K value of the electrode
you use.
 The electrode may be broken or
expired, so replace the electrode.
EN-37