Limas21 Hw: Operating Specifications - ABB AO2000 Series Operating Instructions Manual

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Limas21 HW: Operating specifications

Linearity deviation
Repeatability
Zero drift
Sensitivity drift
Output fluctuation (2 σ )
Detection limit (4 σ )
Flow influence
Associated gas effect /
cross sensitivity
Temperature influence
Air pressure effect
Power supply influence
T time
90
AO2000 CONTINUOUS GAS ANALYZERS
Exhaust gas and diluted exhaust gas measurement: ≤ 1 % of span, ≤ 2 % of
measured value acc. to EPA specifications for automotive exhaust gas
measurement
Process measurement: ≤ 1 % of span
≤ 0.25 % of span
Exhaust gas and process measurement: ≤ 1 ppm or ≤ 1 % of span per
24 hours
Diluted exhaust gas measurement: ≤ 250 ppb or ≤ 2 % of span per 8 hours
in each case based on the smallest recommended measurement range
Daily automatic zero-point calibration recommended
≤ 1 % of the measured value per week
Exhaust gas measurement: ≤ 400 ppb or ≤ 0.4 % of span at electronic T90
time = 5 s
Diluted exhaust gas measurement: NO ≤ 50 ppb or ≤ 0.5 % of span,
NO ≤ 60 ppb or ≤ 0.5 % of span at electronic T90 time = 15 s
2
Process measurement: ≤ 150 ppb or ≤ 0.15 % of span at electronic T90 time =
30 s
Exhaust gas measurement: ≤ 800 ppb or ≤ 0.8 % of span at electronic T90
time = 5 s
Diluted exhaust gas measurement: NO ≤ 100 ppb or ≤ 1 % of span,
NO ≤ 120 ppb or ≤ 1 % of span at electronic T90 time = 15 s
2
Process measurement: ≤ 300 ppb or ≤ 0.3 % of span at electronic T90 time =
30 sec
Flow rate in the 20 to 90 l/h range: within the detection limit
The knowledge of the sample gas composition is necessary for the analyzer
configuration. Selectivity measures to reduce associated gas effect (option-
al): Internal electronic cross-sensitivity correction or carrier gas correction
for a sample component by other sample components measured with the
Limas21 HW
Ambient temperature in permissible range, sample cell thermostat control to
+82 °C;
at zero point: ≤ 2 % of span per 10 °C,
on sensitivity: ≤ 2 % of measured value per 10 °C
At zero point: no influence effect
On sensitivity with pressure correction with an integral pressure sen-
sor: ≤ 0.2 % of the measured value per 1 % air pressure change
The connection of the pressure sensor is led to the outside. Pressure sensor
working range: p = 600 to 1250 hPa
abs
24 V DC ± 5 %: ≤ 0.2 % of span
T90 ≤ 5 s for measurement cell length = 260 mm and sample gas flow =
60 l/h with non-linear filter (static/dynamic) = 15/1 s.
Low-pass time constant adjustable from 0 to 30 s.
| OI/AO2000-EN REV. B