Troubleshooting - ProMinent DULCOTEST OZE Mode D'emploi

Operation / Troubleshooting
Slope calibration
Repeat the calibration the next day!
NOTE
Calibration at increased temperature
Because ozone is only physically solved in water, it quickly outgasses
from the medium at increased temperatures (> 30 °C). The DPD
measurement must thus be performed quickly. After sample-taking, the
reagents should be added within 1 minute. In this case, the red dye is to
be directly generated at the sampling site by adding reagents and then
the measurement is to be performed in the laboratory as quickly as
possible.
8
For troubleshooting, the entire sensor is to be considered. The sensor
consists of (see Figure 2)
The possible causes listed in the following table predominantly refer to the
sensor. Before troubleshooting, ensure that the operating conditions stated in
Chapter 15 "Technical data" are observed:
For locating the failure in the measuring and control unit, the sensor simulator
(DULCOMETER
troubleshooting at the measuring and control unit is described in the
operating instructions of DULCOMETER
In case of excessive deviations of the sensor readings from the result of the
DPD method, first all possible error causes of the photometric DPD method
should be considered. If required, the DPD measurement is to be repeated
several times.
34
Determine the ozone content of the sample water using a suitable
measuring tool (e.g. DPD 4).
Set the determined value at the control unit according to the unit's
operating instructions.

Troubleshooting

1) Measuring/control unit
2) Electrical lines and connections
3) In-line probe and hydraulic connections
4) Sensor
a) ozone content 0.02 - 2 mg/l
b) pH value in the stability range ozone and constant
c) temperature 5 - 45 °C and constant
d) flow rate 30 - 60 l/h
®
Simulator order no. 1004042) can be used. A detailed
® D1C, Ozone.
®
ProMinent