ABB AO2020 User Manual

352 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Magnos28: Operating specifications
Linearity deviation ≤ 0.5 % of span, at least 0.005 vol.% O
2
Repeatability ≤ 50 ppm O
2
(time base for gas exchange ≥ 5 minutes)
Zero drift ≤ 3 % of span of the smallest measurement range (per order) per week,
minimum 300 ppm O
2
per week following prolonged transport and storage
time the drift can be higher during the first weeks of operation.
Sensitivity drift ≤ 0.1 vol.% O
2
per week or ≤ 1 % of measured value per week (not cumula-
tive), the smaller value applies; ≤ 0.15 % of measured value per three months,
at least 0.03 vol.% O
2
per three months
Output fluctuation (2
σ)
≤ 25 ppm O
2
at electronic T90 time (static/dynamic) = 3/0 s
Detection limit (4
σ)
≤ 50 ppm O
2
at electronic T90 time (static/dynamic)= 3/0 s
Flow influence ≤ 0.1 vol.% O
2
in permissible range
Associated gas effect Influence effect of the associated gases is described in the IEC 61207-3:2002
"Gas analyzers – Expression of performance – Part 3: Paramagnetic oxygen
analyzers"
Temperature influence At zero point: ≤ 0.02 vol.% O
2
per 10 °C;
On sensitivity: ≤ 0.3 vol.% O
2
per 10 °C.
Thermostat temperature = 60 °C; ambient temperature in permissible range
Air pressure effect At zero point: no influence effect;
On sensitivity without pressure correction: ≤ 1 % of the measured value per
1 % air pressure change;
On sensitivity with pressure correction by means of internal pressure sensor:
≤ 0.1 % of the measured value per 1 % of air pressure change; for highly sup-
pressed measurement ranges ≤ 0.01 % of the measured value per 1 % of air
pressure change or ≤ 0.002 vol.% of O
2
per 1 % pressure change, whichever is
greater.
Pressure sensor working range: p
abs
= 600 to 1250 hPa
Power supply influence 24 V DC ± 5 %: within the detection limit
Position influence Zero-point shift ≤ 0.05 vol.% O
2
per 1° deviation from horizontal orientation.
Position has no effect on the hard-mounted unit.
T
90
time T
90
≤ 3 s at sample gas flow = 90 l/h and electronic T90 time (static/
dynamic) = 3/0 s, gas switching from N
2
to air (applies to a gas analyzer with
one analyzer module)

ABB AO2020 Specifications

General

Brand	ABB
Model	AO2020
Category	Measuring Instruments
Language	English