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Infrared Gas Analyzer Appendix
Teledyne Analytical Instruments 117
Response time (90%): 15 sec electrical response.
Within 60 seconds including replacement
time of sampling gas (with 0.5L/min gas
flow rate). Gas replacement time depends
on the number of components,and
measuring range.
A.5 Standard Requirements for Sample Gas
Flowrate: 0.5L / min ±0.2 L/ min
Temperature: 0 to 50°C
Pressure: 10 kPa (1.45 psi) or less (Gas outlet side
should be open to the atmospheric air.)
Dust: 100 g/Nm
3
in particle size of 1μm or less
Mist: Unallowable
Moisture: Below saturation at 2°C (condensation un-
allowable).
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 (recommended). Concentration
above 100% FS is unusable.
If an external zirconia O
2
sensor is
installed and calibration is carried out on
the same calibration gas line:
Zero gas: Dry air or atmospheric air
(provided without CO
2
sensor).
Span gas: For other than O
2
measurement,
each sample gas having concentration 90
to 100% of its measuring range.
For O
2
measurement: O
2
gas of 1 to 2 vol
%.