SensoGate WA131MH
37
7 Troubleshooting
7.1 Malfunction States
Malfunction state
Possible causes
Remedy
Process medium escapes
from the leakage bore
Leaking due to damaged O-rings
Replace damaged O-rings
1)
The safety lock button
cannot be depressed
Sensor mounted incorrectly
2)
Mount sensor correctly
Installing and Removing a Sensor, p. 25
O-ring or compression ring of
solid-electrolyte sensor not
present or not correctly posi-
tioned
Correctly install O-ring or compression ring of
solid-electrolyte sensor
Installing and Removing a Sensor, p. 25
Corrosion or contamination by
process medium
3)
Perform emergency release
Retractable Fitting: Emergency Release, p. 38
Clean the SensoGate WA131MH or send it to
Knick for corrective maintenance
"Immersion lock without
mounted sensor" safe-
guard not working
Corrosion or clogging by pene-
trated process medium
3)
Send SensoGate WA131MH to Knick for repair
Emergency release performed
(set screw screwed in)
Reset emergency release
Retractable Fitting: Emergency Release, p. 38
Sensor glass shattered
Mechanical impact on the sensor
glass (e.g. by process medium)
Replace faulty sensor
Installing and Removing a Sensor, p. 25
Remove any glass splinters from the SensoGate
WA131MH. Check immersion tube seal and
replace if necessary
No or wrong measured
value displayed
Sensor may be faulty
Replace the sensor.
Installing and Removing a Sensor, p. 25
Sensor cable damaged or plug
connection faulty
Fasten plug connection or replace damaged
sensor cable
Installing and Removing a Sensor, p. 25
See also
Spare Parts, Accessories, and Tools, p. 40
1)
After replacing the damaged O-rings, clean the leakage bores so that any further escape of process medium can be
detected.
2)
Functionality only available on versions with the safeguard “Immersion lock without a mounted sensor”.
3)
To protect against the penetration of media from outside into the sensor holder, we recommend using the protec-
tive cap ZU0759. We recommend rinsing the sensor before removing it in order to prevent entrainment of the
process medium in the area of the sensor holders.
Содержание SensoGate WA131MH
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Страница 59: ...SensoGate WA131MH 59 Notes ...