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Test gas for
validation
Validation with a
length of 100 mm
Two validation cells
with a total length of
160 mm
92
Proceed as follows:
Step
Procedure
1
Connect a discharge line to the test gas output.
2
Connect a test gas to the test gas input.
The validation is used to check the functional capability of the analyzer.
Due to the gasket materials used in the transmitter unit and the receiver unit,
it is recommended not to apply test gas with more than 50 ppm NH
following table shows the measured value change which should be achieved
depending on the test gas concentration and the process path length (OPL).
MR
5 ppm
7.5 ppm 10 ppm
OPL
c
c
c
v
t
v
0.5 m 4
21
6
1.0 m
4
42
-
MR
5 ppm
7.5 ppm 10 ppm
OPL
c
c
c
v
t
v
0.5 m 4
13
6
1.0 m
4
26
6
1.5 m
4
39
-
2.0 m
4
52
-
MR
Measuring range
OPL
Optical path length
c
resulting total concentration in the process in ppm
v
c
concentration of the test gas to be used for validation in ppm
t
Operating instruction LS4000 for NH
12.5 ppm
c
c
c
c
c
t
v
t
v
t
32
8
42
10
53
-
-
-
-
-
12.5 ppm 15 ppm
c
c
c
c
c
t
v
t
v
t
20
8
26
10
32
39
8
52
-
-
-
-
-
-
-
-
-
-
-
-
and H
O
3
2
. The
3
c
c
v
t
12
39
-
-
-
-
-
-
OI/LS4000/NH3/H2O-EN
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