Hach sensION+ pH3 Manual Del Usuario página 11

Troubleshooting
Refer to the following table for common problem messages or symptoms,
possible causes and corrective actions.
Table 2 Calibration warnings and errors
Error/Warning
Asymmetry > 58
Slope out of range (accepted values ± 58 mV).
mV
Repeat with
Connect a new probe.
Buffer or electrode
Repeat with
in poor conditions.
Examine the probe: Clean the probe (refer to
Sens. (a) < 70%
probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like
BUFFER NOT
a thermometer; Connect a different probe to verify if
RECOGNIZED
problem is with probe or meter.
Examine the buffer solution: Make sure that the buffer used
matches the buffer specified in configuration; make sure of
the temperature specification in configuration; use new
buffer solution.
UNSTABLE
Repeat with
READING
Examine the probe: Clean the probe (refer to
Time t> 100 s
probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like
a thermometer; connect a different probe to verify if problem
is with probe or meter.
Make sure that the membrane and the diaphragm are
properly immersed in the sample.
Solution
.
.
Clean the
.
Clean the
Table 2 Calibration warnings and errors (continued)
Error/Warning
Electrode in poor Examine the probe: Clean the probe (refer to
conditions. probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like a
Check the
thermometer; connect a different probe to verify if problem is
electrode
with probe or meter.
SAME BUFFERS
Repeat with
Examine the probe: Clean the probe (refer to
probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like
a thermometer; connect a different probe to verify if problem
is with probe or meter.
Examine the buffer solution: Use new buffer solution.
Table 3 Measurement warnings and errors
Error/Warning
pH 12.78 19°C
Repeat with
pH out of range Examine the probe: Clean the probe (refer to
probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like a
thermometer; connect a different probe to verify if problem is
with probe or meter.
Temp out of range Examine the temperature sensor.
°C
Connect a different probe to verify if problem is with probe or
meter.
Time > 150 s Make sure that the membrane and the diaphragm are properly
immersed in the sample.
Examine the temperature.
Examine the probe: Clean the probe (refer to
probe on page 9 for more information); make sure that there
are no air bubbles in the membrane. Shake the probe like a
thermometer; connect a different probe to verify if problem is
with probe or meter.
Solution
Clean the
.
Clean the
Solution
.
Clean the
Clean the
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