Troubleshooting Guide - EUTECH INSTRUMENTS TN-100 Instruction Manual

Instruction Manual

4. Troubleshooting Guide

The TN-100/ T-100 turbidimeter routinely performs self-diagnostics, and will
automatically generate messages to provide you with specific diagnostic
information. These messages are for your use and do not indicate a reduction in the
performance of the instrument or a failure of any component in the instrument,
unless otherwise stated in this list.
LCD
Message
Calibration Error. The meter is
ERR 1 unable to recognize the 800 NTU
Calibration Standard.
Calibration Error. The meter is
ERR 2 unable to recognize the 100 NTU
Calibration Standard.
Calibration Error. The meter is
ERR 3 unable to recognize the 20.0 NTU
Calibration Standard.
Calibration Error. The meter is
ERR 4 unable to recognize the 0.02 NTU
Calibration Standard.
Calibration Error. There is not
sufficient signal to achieve the
ERR 5
appropriate resolution in the 0-
1000NTU range.
General Calibration Failure. There
is not sufficient signal to achieve
ERR 6
the appropriate resolution in the 0-
100NTU range.
General Calibration Failure. There
is not sufficient signal to achieve
ERR 7
the appropriate resolution in the 0-
20 NTU range.
Excessive stray light detected.
ERR 8
Attempting a measurement when
low battery indicator is on.
ERR 9 Lamp Failure.
When Turbidity value is above the
Or
measurement range(>1000NTU)
Low battery indication. The
batteries need to be replaced.
* If an error message appears, take the appropriate
corrective action and re-do the desired procedure. If
the problem persists, contact Eutech Instruments or
your dealer. See Sections on Warranty and Return
of Items on page 24.
Description
15
TN-100/ T-100
Corrective Actions
Ensure to use the correct 800
NTU calibration standard. *
Ensure to use the correct 100
NTU calibration standard. *
Ensure to use the correct 20.0
NTU calibration standard. *
Ensure to use the correct 0.02
NTU calibration standard. *
Re-do calibration with all 4
standards provided. *
Re-do calibration with all 4
standards provided. *
Re-do calibration with all 4
standards provided. *
Ensure the vial is fully snapped
in the sample well.
Replace batteries.
Return unit.
Dilute sample. See Section 9.7
on page 23.
Replace batteries.