Download Operating Instructions Type 8202 ELEMENT

Type 8202 ELEMENT
Maintenance and troubleshooting
Red
LED
Current
output
OFF
4-20 mA Switched 2)
OFF
OFF
Transistor
output
4-20 mA Switched 2)
4-20 mA Switched 2)
Icon
Message displayed in the
Info menu
+ "W:Impedance
Ref"
+ "W:Imped.
Glass"
Possible cause
Recommended action
The impedance of the
reference electrode is
out of range.
→→Go into the "Sensor"
The message is displayed if the monitoring
of the impedance of
the reference electrode
has been activated,
depending on the set
thresholds WARN LO
and WARN HI (see
chap. 9.13.2).
The impedance of the
pH electrode is out of
range.
The message is displayed if the monitoring
of the impedance of the
pH electrode has been
activated, depending
on the set thresholds
WARN LO and WARN
HI (see chap. 9.13.3).
+ "W:Temperature" The fluid temperature is
out of range.
The message is displayed if the monitoring
of the fluid temperature
has been activated,
depending on the set
thresholds WARN
LO and WARN HI
(see chap. 9.13.3).
function of the Diagnostic menu to read
the impedance value
of the reference electrode (chap. 9.13.2).
→→If necessary, clean
then recalibrate the
measurement sensor
or replace it.
→→Go into the "Sensor"
function of the Diagnostic menu to read
the impedance value
of the pH electrode
(chap. 9.13.3).
→→If necessary, clean
then recalibrate the
measurement sensor
or replace it.
→→Go into the "Sensor"
function of the
Diagnostic menu to
read the measured
fluid temperature
(chap. 9.13.3).
→→If necessary, check
whether the built-in
Pt1000 is working
correctly by measuring a fluid with a
known temperature.
→→If the Pt1000 is faulty,
return the device to
Bürkert.
→→If the Pt1000 is not
the cause of the
problem, check the
process.
If the "PVAR" function of the "Output.TR1" and/or "Output.TR2" menus is set to "warning" (see chap. 9.11.10); else, the
transistor outputs are operating depending on the set thresholds.
2)
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English