Hach TU5200 User Manual page 33

Message
Next calibration is due!
Next service is due!
Next verification is due!
Reading
Clean the vial.
Hardware error / instrument
error
The calibration range is
exceeded.
The measurement range is
exceeded.
Calibration/Verification
Instrument error
The standard is not stable.
The standard value is out of
the measurement range.
The standard value is too
low.
The standard value is too
high.
Verification failed.
Compare process and laboratory measurements
Measurement values are not
the same.
Calibrate the instrument. Refer to
Note: The calibration reminder is set to on. Refer to
on page 26.
Contact technical support.
Note: The service reminder is set to on. Refer to
Do a calibration verification. Refer to
Note: The verification reminder is set to on. Refer to
on page 27.
Wipe the sample vial with a no-lint cloth to remove contamination and
condensation from the glass.
Set the power to off, wait 20 seconds and then set the power to on again. If the
problem continues, contact technical support.
The measured turbidity is more than the calibration range of the instrument. Select
a calibration curve for the full measurement range. Refer to
calibration settings on page 26.
The measured turbidity is more than the measurement range of the instrument.
Examine the standards. Start the calibration or verification again.
If calibration (or verification) is not successful, contact technical support.
Use the correct calibration standards. Invert the standard until no bubbles or large
particles show.
Use the correct calibration standards. Invert the standards. Make sure to measure
the standards in ascending order.
The wrong calibration standard is in the vial compartment. Make sure that the
standard has not expired.
Put the correct calibration standard in the vial compartment. Make sure to invert
the standard.
The wrong calibration standard is in the vial compartment. Make sure that the
standard has not expired.
Put the correct calibration standard in the vial compartment.
Examine the verification standard. Calibrate the instrument. Refer to
instrument on page 26.
If verification is not successful, push Calibration>Options>Calibration
Setup>Reset to Factory Calibration>OK.
Click the link to get troubleshooting information. Some typical solutions are as
follows:
• Clean the vial. Refer to
• Calibrate the instrument with the same calibration curve as the process
instrument. Use the same standards to calibrate the process and laboratory
instruments. Make sure that the standards have not expired.
• Set the Bubble Reject setting to on. Refer to
settings on page 15.
• There was too much time between the process measurement and laboratory
measurement.
• Clean the vial compartment.
Solution
Calibrate the instrument
Configure the calibration settings
Show the instrument information
Do a calibration verification
Configure the verification settings
Clean a sample vial on page 29.
Configure the measurement
on page 26.
on page 25.
on page 28.
Configure the
Calibrate the
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