42/24-10 EN Rev. 9 Appendix 2: Analyzer Module Operating Specifications A-2-7
Oxygen Sensor Operating Specifications
Linearity deviation Linear in the range > 1 Vol.-% O
2
Repeatability ≤ 0.5 % of span
Zero drift Stable over long-term due to absolute zero point
Sensitivity drift ≤ 1 % of measurement range scale per week
Output fluctuation (2 σ) ≤ 0.2 % of the measurement range at electronic T90 time (static/dynamic)
= 5/ 0 sec.
Detection limit (4 σ) ≤ 0.4 % of the measurement range at electronic T90 time (static/dynamic)
= 5/ 0 sec.
Flow influence Flow rate in 20 to 100 l/h range: ≤ 2 % of measurement range scale
Temperature
influence
Ambient temperature in permissible range: ≤ 0.2 Vol.-% O
2
per 10 °C
Air pressure influence • At zero-point: No effect
• On sensitivity without pressure correction:
≤ 1 % of measured value per 1 % air
pressure change
• On sensitivity with pressure correction:
≤ 0.2 % of measured value per 1 % air
pressure change
Pressure correction is only possible if the oxygen sensor is connected to an
analyzer module with an integral pressure sensor.
Pressure sensor working range: p
abs
= 600 to 1250 hPa
T
90
time T
90
≤ 30 seconds, depending on sample gas flow and system layout
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