Yokogawa IR400 - Manual (Page 18)

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IM 11G02N01-01E
Internal piping diagram
Measuring unit 2
Measuring unit 1
Sampling cell
Note)
2 cells may be used
by combination of
range.
OUTLET INLET OUTLET INLET
Sampling gas inlet
Sampling gas outlet
For measuring
unit 1
Sampling gas inlet
Sampling gas outlet
For measuring
unit 2
Built-in
O
2
sensor
Built-in
O
2
sensor
Note) When the purge gas inlet is provided, the piping to measuring unit 2 is built inside.
Correspondence of measured components and measuring units
Measuring components
1-component Analyzer for
NO, SO
2
, CO
2
, CO and CH 4
2-component Analyzer for
NO-SO
2
and CO
2
-CO
2-component Analyzer for
NO-CO
3-component Analyzer for
NO-SO
2
-CO
4-component Analyzer for
NO-SO
2
-CO
2
-CO
Measuring unit 1
Each component
NO-SO
2
CO
2
-CO
NO
NO-SO
2
NO-SO
2
Measuring unit 2
None
None
CO
CO
CO
2
-CO
Note) When there are two measuring units, the built-in O
2
sensor must
be connected to the measuring unit 2.