Xylem WTW Alyza IQ PO4, Operation Manual

Page: 82 / 172

Measurement / Operation Alyza IQ PO4
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Messbereich
With the setting
Messmodus : PO4-P
0,02 .. 15,00 mg/L
0,2 .. 50,0 mg/L
0,02 .. 15,00 ppm
0,2 .. 50,0 ppm
0,6 .. 480,0 umol/L
6 .. 1600 umol/L
Depending on the
Messmodus
setting,
different measuring ranges can be
selected.
For each measured parameter, a low
(MR1) and a high measuring range
(MR2) can be selected.
On changing the measuring range
another cell must be installed in the
photometer.
In addition, other ChemBags have to be
installed.
With the setting
Messmodus : PO4
0,06 .. 46,00 mg/L
0,6 .. 153,0 mg/L
0,06 .. 46,00 ppm
0,6 .. 153,0 ppm
0,6 .. 480,0 umol/L
6 .. 1600 umol/L
Offset-Korrektur
With the setting
 Messmodus PO4-P and
 Messbereich 0,02 ..
15,00 mg/L
(low MR)
- 0.50…
0.00
…+ 0.50
mg/L
For other measuring modes and mea-
suring ranges, the value ranges are
adjusted.
With the setting
 Messmodus PO4-P and
 Messbereich 0,2 .. 50,0
mg/L (high MR)
- 5…
0
…+ 5 mg/L
Setting menu (PO4) Possible values Description
Setting menu (general set-
tings)
Possible values Description
Messintervall 5*,
10
, 15, 20, 30, 45,
60 min
2, 4, 6, 8, 12 h
Measuring interval
* only for the low measuring range
(MR1)
Dämpfung Aus
Signalglättung
Medianfilter
Methods for filtering the signals
A signal filter in the sensor reduces the
limits of variation of the measured
value.
With the setting
Signalglättung :
The signal filter is essentially charac-
terized by the response time t90.
Response time of the signal filter (in
seconds).
This is the time after which 90 % of a
signal change is displayed.
Ansprechzeit t90
100
, 200, 300, 400 s