EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
209
Caldos27
Stability
The following data only applies if all the influence variables (e.g.
flow, temperature and air pressure) are constant. They are based
on the smallest measuring ranges given in the data sheet; the
deviations may be larger for smaller measuring ranges.
Linearity error
≤
2 % of measuring span
Repeatability
≤
1 % of measuring span
Zero drift
≤
2 % of smallest possible measuring range per week
Span drift
≤
0.5 % of the smallest provided measuring range per week
Output signal fluctuation (2
σ)
≤
0.5 % of smallest measurement range span at electronic
T
90
time = 0 sec
Detection limit (4
σ)
≤
1 % of the measuring span of the smallest measuring range
at electronic T
90
time = 0 sec
Influences
Flow effect
≤
0.5 % 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
Analyzer calibration should be based on an analysis of the
sample gas.
If the sample gas contains components in addition to the
sample component and associated gas (binary gas mixture),
this will result in erroneous measurements.
Temperature effect
Ambient temperature in permissible range.
In any point of the measuring range:
≤
1 % of span per 10 °C, based on the temperature at the time
of calibration.
Thermostat temperature = 60 °C.
Air pressure effect
≤
0.25 % of span per 10 hPa for the smallest ranges; for larger
spans, the influence effect is correspondingly lower.
Position effect
< 1 % of span up to 30° deviation from horizontal orientation
Dynamic response
Warm-up time
Approx. 30 minutes
T
90
time
T
90
≤
2 sec for sample gas flow = 60 l/h and electronic T
90
time (static/dynamic) = 0/0 sec
