23
K 100 (W) Cl
2
, SCl
2
, ClO
2
, O
2
, O
3
, H
2
O
2
.
.
Averaging
.
.
Cleaning
.
.
Basic settings
Main menu
Basic settings
Cleaning/day
1
Turn-on delay
6.0 h
Cleaning
5.3 Automatic sensor cleaning ASR (option)
5.3 Automatic sensor cleaning ASR (option)
The patented Automatic Sensor Cleaning ASR prevents staining and passivating
coatings and keeps the surface of metal sensors clean throughout the measurement.
The cleaning is an electrochemical one: in adjustable intervals the instrument applies
a strong voltage to the electrode to produce Hydrogen and Oxygen from the
surrounding water. This method needs no addition of chemicals.
The cleaning process takes about 30 seconds. During this time measurement is not
possible, and after cleaning the sensor needs some time for polarisation. Therefor the
display and the analog output will show the last measured value for five minutes, and
the message „cleaning in progress“ is displayed. As a safety measure, attempts to
calibrate within these five minutes are ignored.
Activation and timing
The cleaning is activated by setting the cleaning function from 0/day (never) to 1/day
(every 24h) or 2/day (every 12 h). The first cleaning starts as soon as the function is
activated, and subsequent cleanings are carried out after 24h, or 12h, according to
settings.
The start delay allows to select a more convenient cleaning time, e.g. in the night. After
activation the cleaning is delayed by the set time.
NOTE
Whenever the instrument indicates „no water“, cleaning is not carried
out.
5.4 Averaging
In the basic settings you can activate an averaging function to smoothen the signals.
This is especially useful when using membrane sensors.
Averaging
ON
Averaging
