SECTION 5
SOLVING PROBLEMS
5.1 Troubleshooting
Problem Solution
There is a large Check the freshness of the calibration standards
shift in calibration. and replace if needed. See Section 4.
Calibrate the insturment and then run the Clean Test. If
the contamination level is greater than 10, clean the
thermocouple. If the contamination level is less than 10,
recalibrate the instrument.
There is poor linearity Check the Temperature Drift Scale on the display to see
in the low range (below if temperature is stable. If necessary, allow the
200 mmol/kg). instrument to stabilize. See Section 2.3.
Verify that you are using fresh calibration standards.
See Section 4.
Calibrate the instrument and then run the Clean Test
(Section 3.4) using the 100 mmol/kg standard. If con-
tamination is greater than 10, clean the thermocouple
using the instructions in Section 4.
If you run the Clean Test and the dis-
play shows “ERROR Use only with 100
mmol/kg standard,” this may indicate that
you incorrectly used a 290 mmol/kg or
1000 mmol/kg standard for the test. Run
the Clean Test again using the 100 mmol/kg
standard.
If while using the 100 mmol/kg standard you
see “ERROR Use only with 100 mmol/kg
standard”on the display, check for loose TC
head screws.
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