66
Maintenance and troubleshooting
Red
LED
Current
output
Transistor
output
Icon Message dis-
played in the
Info menu
Possible cause Recommended action
ON 22 mA
1)
depending on
thresholds
ERR
+
"E:Impedance
Ref"
The impedance of the
reference electrode is
out of range.
The message is dis-
played if the monitoring
of the impedance of
the reference electrode
has been activated,
depending on the
set thresholds ERR
LO and ERR HI (see
chap. 9.13.2).
→ Go into the "Sensor"
function of the Diag-
nostic menu to read
the impedance value
of the reference elec-
trode (chap. 9.13.2).
→ If necessary, clean
then recalibrate the
measurement sensor
or replace it.
ON 22 mA
1)
depending
on thresholds
ERR
+
"E:Imped.Glass The impedance of the
pH electrode is out of
range.
The message is dis-
played if the monitoring
of the impedance of the
pH electrode has been
activated, depending
on the set thresholds
ERR LO and ERR HI
(see chap. 9.13.2).
→ Go into the "Sensor"
function of the Diag-
nostic menu to read
the impedance value
of the pH electrode
(chap. 9.13.2).
→ If necessary, clean
then recalibrate the
measurement sensor
or replace it.
ON 22 mA
1)
depending
on thresholds
ERR
+
"E:Temperature" The fluid temperature is
out of range.
The message is dis-
played if the moni-
toring of the fluid
temperature has been
activated, depending
on the set thresholds
ERR LO and ERR HI
(see chap. 9.13.3).
→ 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 meas-
uring 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.
1)
if the DIAGNOSMODE function of the "Output.AC1" or "Output.AC2" menu is set to "22 mA" (see chap. 9.11.9); else, the
current output delivers a standard current between 4 and 20 mA
English
Type 8202 ELEMENT
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