Hach TitraLab AT1102 User Manual page 53

Error/Warning
No measure received
The stirrer/propeller stirrer
does not operate
Printer: communication
error
Burette fails to deliver
Burette fails to fill
Burette failed to read
delivered volume
System failure
Error/Warning
Temperature variation too
high
Temperature out of range
Calibration solution already
used
Slope out of range
Offset out of range
Buffer value under
electrode detection limit
Cell constant out of range
The connected electrode
cannot be calibrated or
there is no application that
contain calibration
parameters
Table 9 Measurement (continued)
Description
No measurement can be done
The stirrer (or the propeller stirrer) does not
automatically start when the measurement
starts.
The red LED on the printer flashes to show
that the printer is in error mode. There is no
paper in the printer.
Syringe cannot deliver any reagent
Syringe cannot be filled with reagent
Syringe cannot calculate the delivered
volume of reagent
Operational failure
Table 10 Calibration
Description
The variation in temperature is too high
across all the calibration solutions when
more than one is used
The temperature of the calibration solution is
outside the specified temperature range for
the buffer or standard used in the calibration
The calibration solution has already been
used for a calibration
The pH sensor calibration slope is outside
the accepted limits
The pH sensor calibration offset is outside
the accepted limits
The value of the calibration solution is less
than the low limit for sensor detection
The calibration value of the cell constant is
outside the accepted limits
There is no installed application that contains
calibration parameters, or the sensor is not a
sensor that can be calibrated (e.g. PtPt or
ORP sensors)
Possible solution
Make sure that the sensor is correctly connected
to the instrument
Disconnect the sensor and connect it again
Change the sensor if no measurement is
received using the Live Measure option (refer to
Other maintenance options
Make sure that the stirrer configuration is set
correctly. Identify if the applicable stirrer is
selected in the Settings>Options menu.
Replace the paper roll in the printer. Refer to the
printer documentation.
Contact technical support
Contact technical support
Contact technical support
Contact technical support
Possible solution
Make sure that the maximum temperature
variation across all the calibration solutions is no
more than 5 °C before starting a calibration
Make sure that the temperature of the calibration
solution is inside the specified range before
starting a calibration
Use another calibration solution
Make sure that there are no bubbles around the
sensor element or junction
Clean the sensor using the recommended
procedures in the sensor documentation
Make sure that there are no bubbles around the
sensor element or junction
Clean the sensor using the recommended
procedures in the sensor documentation
Use a calibration solution that is inside the
sensor measurement range
Make sure that the cell constant minimum and
maximum values are correct for the application
and adjust them if incorrect (refer to
application parameters on page 63)
Make sure that at least one application that
contains calibration parameters for the sensor
has been installed, and that the sensor is a
sensor that can be calibrated (e.g. pH or
conductivity sensors)
Troubleshooting
on page 45)
Change
51