ProMinent DULCOTEST OZE Mode D'emploi page 36

Troubleshooting
Fault Possible cause
Reading of the
Sensor connected to the control
sensor is 0 ppm
unit with wrong polarity
and error
message at
Measuring line broken
DULCOMETER ®
D1C controller
"Check O Sensor faulty
3
input" is
displayed
Control unit faulty
Reading of the Running-in period too low
sensor is 0
ppm and the
Interfering substances in water
sensor current
(see "Cross-sensitivity" in
is 3.0 – 4.0 mA
Chapter 15 "Technical data")
Zero point shifted
Reference electrode faulty
(see footnote 1)
Reading of the Ozone content above the upper
sensor is any
measuring range limit
and the sensor
current is
Distance between diaphragm and
larger than
electrode too large
20 mA (see
footnote 2)
Sensor faulty
Reading of the
Pressure fluctuations in the sample
sensor is
water line
unstable
Reference electrode faulty
(see footnote 1)
1 If the reference electrode is of a silvery bright or white colour, it must be regenerated.
2 The DULCOMETER
36
Brownish-grey or yellow-green discolourations, however, are common.
®
D1C can be used to display the sensor current for a sensor
which is electrically connected. Please read the value in the field "Zero point" in the
complete operating menu, see operating instructions DULCOMETER
Chapter 8 in the setting menu "Calibration ozone". Do not confirm by pressing the
Enter key but exit the menu by pressing the Return key.
Remedy
Correctly connect sensor to control
unit (see Chapter 6)
Replace measuring line
Return sensor
Check control unit with sensor
simulator (DULCOMETER
Simulator, order no. 1004042),
return if faulty
see Chapter 7.1 "Running-in period"
Check water for interfering
substances and replace water, if
required
Calibrate zero point
(see Chapter 7.2)
Return sensor for regeneration
Check system, remedy fault, repeat
calibration (see Chapter 7.2)
Tighten diaphragm cap fully
Return sensor
Check installation site and change,
if required. Change procedure, if
required
Return sensor for regeneration
®
®
D1C, Ozone,
®
ProMinent