Magnos27 - ABB EasyLine EL3000 Operating Instruction

EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D

Magnos27

The following data is valid under the condition that all
Influencing quantities (for example, flow, temperature and air
pressure) are constant.
Stability
Linearity error
≤ 2 % of measuring span
Repeatability
≤ 1 % of measuring span
Zero drift
≤ 1 % of span per week
Span drift
≤ 2 % of measured value per week
Output signal fluctuation (2 σ)
≤ 0.5 % of smallest measurement range span at electronic
T time = 0 sec
90
Detection limit (4 σ)
≤ 1 % of the measuring span of the smallest measuring range
at electronic T time = 0 sec
90
Influences
Flow effect
≤ 1 % of span at a flow change of ±10 l/h. At an identical flow
rate for test and sample gases, the flow rate effect is
automatically compensated.
Associated gas effect
Magnos27 calibration applies only to the sample gas shown
on the identification plate (= sample component +
associated gas).
Temperature effect
Ambient temperature in permissible range.
• At zero point:
≤ 2 % of span per 10 °C
• on the sensitivity:
≤ 0.5 % of the measured value per 10 °C
based on temperature at the time of calibration. Thermostat
temperature = 63 °C.
Air pressure effect
• at zero point:
< 0.05 vol. % O per 1 % air pressure;
2
• on sensitivity without pressure correction:
≤ 1.5 % of the measured value per 1 % of air pressure
change;
• On sensitivity with pressure correction using an
integrated pressure sensor (option):
≤ 0.25 % of the measured value per 1 % of air pressure
change
Operating altitude over 2000 m
Position effect
Approx. 3 % of the span of the smallest measurement range
per 1° deviation from horizontal orientation. Position has no
effect on the hard-mounted unit.
Dynamic response
Warm-up time
2 to 4 h
T time
90
T = 10 to 22 s, depending on sample gas flow and on the
90
sample chamber connection (applies to a gas analyzer only
with Magnos27)
207