74
INZ-TN2ZRE-E
6. standard Requirements for sample Gas
Flow rate:
0.5L/min ± 0.2L/min
temperature:
0 to 50˚C
Pressure:
10 kPa or less (Gas outlet side should
be open to the atmospheric air.)
Dust:
100 µg/Nm
3
or less in particle size of 0.3
µm or less
Mist:
Unallowable
Moisture:
Below a level where saturation occurs at
room temperature (condensation unallow-
able).
Below the level where saturation occurs
at 2˚C for CO measurement in 0 to 200
ppm range, NO measurement, and SO
2
measurement.
Corrosive component:
1 ppm or less
standard gas for calibration:
Zero gas ; Dry N
2
Span gas ; Each sample gas having
concentration 90 to 100% of
its measuring range (recom-
mended).
In case a zirconia O
2
analyzer is installed
externally and calibration is carried out
on the same calibration gas line:
Zero gas ; Dry air or atmospheric air
Span gas ; For other than O
2
measure-
ment, each sample gas hav-
ing concentration 90 to 100%
of its measuring range
For O
2
measurement, O
2
gas of 1 to 2 vol%/remains
N
2
gas
7. installation Requirements
• Indoor use (Select a place where the equipment does
not receive direct sunlight, draft/rain or radiation from hot
substances. If such a place cannot be found, a roof or
cover should be prepared for protection.)
• Avoid a place where unit receives heavy vibration
• Select a place where atmospheric air is clean
