VWR International sympHony, User Manual

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41
sympHony
™
Meter User Guide
Error Code Description Troubleshooting
109 Bad pH Slope or
Calibration Offset Clean the electrode according to the electrode user guide. Re-
calibrate the electrode with new buffers.
306 ISE Automatic
Blank Error Disable the automatic blank feature in the setup menu and re-
calibrate the meter without using a zero concentration standard.
307 ISE Calibration
Standard Error The millivolts measured during calibration are the same for two
standards. Review the calibration procedure and verify that the
electrode was placed in the standards at the appropriate times.
Clean the electrode according to the electrode user guide. Re-
calibrate the electrode with fresh standards.
309 Bad ISE Slope Clean the electrode according to the electrode user guide. Re-
calibrate the electrode with freshly prepared standards.
707 Conductivity
Calibration
Standard Error The conductivity value measured during calibration is the same
for two standards. Review the calibration procedure and verify
that the conductivity probe was placed in the standards at the
appropriate times. Clean the conductivity probe according to the
probe user guide. Re-calibrate the probe with new standards.
709 Conductivity Cell
Constant Error The cell constant is not in the range of 0.001 to 199.0 cm
-1
.
Clean the conductivity probe according to the probe user guide.
Re-calibrate the probe with new standards.
808 Bad Zero Point
DO Slope An air calibration should be performed before the zero point
calibration. Verify that a solution with zero oxygen is being
used for the zero point calibration. A solution with 15 grams of
Na
2
SO
3
dissolved in 250 mL of distilled water is recommended.
809 Bad DO Slope Connect the probe to the meter, power on the meter and let the
probe to polarize for at least 30 minutes. For an air calibration,
check that the sponge in the calibration sleeve is damp and
there is no water on the probe membrane . For a water
calibration, bubble air into the sample and stir to keep bubbles
off the membrane. Clean the DO probe according to the probe
user guide. Re-calibrate the DO probe.
Troubleshooting