P
AGE
34
O
PERATION AND
U
SE
C
HAPTER
4
►
measurement parameter
The analyser can be used to monitor the iron content for two different
reagents:
→ type LRS, range 0-0.6 mg/l
→ type HRS, range 0-6.0 mg/l
For each reagent 8 limit values can be set through the switches S6
– S8
(see table below and the diagrams on the following page).
►
limit monitoring
Normally a signal is given if the designated limit is exceeded. In which case, for
example, a deferrization process can be monitored for iron leakage.
→ If S9 is in the OFF position, a signal is given if the iron content of the sample is
above the designated limit.
→ If S9 is in the ON position, a signal is given if the iron content of the sample is
below the designated limit. This feature is useful in a water grading plant when
a minimum iron content is required.
→ When S9 is ON all the functions described in this manual apply except that the
function of the limit is inverted
Limit Values in mg Fe/l
S6
S7
S8
Indicator LRS
Indicator HRS
OFF
OFF
OFF
0.03
0.3
OFF
OFF
ON
0.05
0.5
OFF
ON
OFF
0.1
1.0
OFF
ON
ON
0.2
2.0
ON
OFF
OFF
0.3
3.0
ON
OFF
ON
0.4
4.0
ON
ON
OFF
0.5
5.0
ON
ON
ON
0.6
6.0
Limit monitoring
S9
Function
OFF
Signal when above limit
ON
Signal when below limit
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
NOTE
NOTE
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
ON
1
2
3
4
5
6
7
9
8
10 11 12
OFF
