Xylem 201570, Руководство по эксплуатации

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What to do if ... DurOx 325
14 ba25400e04 10/2020
Sensor and
membrane cap
For disposal, unscrew the membrane head and rinse the sensor and
membrane head with water. We recommend disposing of the sensor without
the membrane cap as electronic refuse. The membrane head may be
disposed of with the household refuse.
Electrolyte
solution
Disposal according to the safety data sheet.
6 What to do if ...
Error symptom Cause Remedy
The sensor is in the air
and the display shows
0.0 mg/l or 0 % O
2
– No connection between
measuring instrument and sensor
– No electrolyte in the membrane
head
– Cable defective
– Check connection between
measuring instrument and sensor
– Replace and refill the membrane
cap (see section 5.3)
– Return the sensor
The sensor cannot be
calibrated – Contaminated membrane head
– Electrolyte depleted
– Hole in the membrane
– Membrane cap not screwed on
tight enough
– Replace and refill the membrane
cap (see section 5.3)
Subsequently, wait for 30 to
50 min and recalibrate.
– Screw membrane head tighter
The sensor still cannot
be calibrated after
changing the electrolyte
and membrane head – Contaminated electrodes or
sensor toxification
– Clean the electrodes (see section
5.4)
Incorrect temperature
display – Temperature sensor defective – Return the sensor
Mechanical damage to
the sensor – Return the sensor
Meter displays OFL
(display range exceeded)
– Short-circuit between working
electrode and counter electrode
– Clean the electrodes (see section
5.4). If the meter still displays
OFL , return the sensor.