Section 9 Troubleshooting - Hach TitraLab KF1000 Series User Manual

Section 9
Error/Warning
Measurement unstable
Measurement out of range
Temperature out of range
Cell cond. skipped
Analysis skipped
Equiv. point not found
Out of range
Equation calc. error
Titrant calibration has expired
The titrant used by an
application has been
modified and this application
became incompatible with
applications already installed.
Please go to application
management to solve the
issue
System error
Troubleshooting
Refer to the following tables for problem messages and possible causes and solutions.
Table 8 Measurement
Description
The measurement from the sensor is not
stable
The sample concentration is outside the
sensor measurement limits
The sample temperature is outside the
sensor measurement limits
The cell conditioning has been stopped
manually by the user
The titration has been stopped manually by
the user
The titration fails to determine the
equivalence point
The computed result is outside the accepted
limits
An equation variable is unknown (e.g. the
ordinate of the equivalence point is unknown
or the volume of the equivalence point is
unknown)
A titration has been done with an expired
titrant calibration date
The application data has been changed and
the application cannot be used
A system error causes the titration to stop
(e.g. a sensor has been disconnected or the
volume of reagent is too low)
Possible solution
Make sure that there are no bubbles around
the sensor element or junction
Adjust the sample preparation to be inside the
sensor measurement range
Use a different sensor with a more applicable
measurement range
Adjust the sample temperature to be inside
the sensor measurement range
Use a different sensor with a more applicable
measurement range
Make sure that the sensor is operating
correctly
Refer to the application note for best practices
and do the titration again
Refer to the application note for best practices
and do the titration again
Refer to the application note for best practices
and do the titration again
Adjust the equivalence point detection value
for the application (refer to Change application
parameters on page 59)
Contact technical support
Refer to the application note for best practices
and do the titration again
Adjust the result minimum and maximum
values for the application (refer to
application parameters on page 59)
Make sure that all the equation variables are
available (refer to the application note for the
equation description and values)
Calibrate the titrant and if necessary adjust
the calibration frequency (refer to the
application note for the recommended
frequency)
Remove the application or change the titrant
to a titrant that is already installed
Make sure that all the system elements are
connected and working correctly (refer to
Maintenance menu on page 41)
Change
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