Test Gases For Calibration - ABB Advance Optima magnos206 Operator's Manual

Test Gases for Calibration

Analyzer Module
Caldos25,
Caldos27
Magnos206
with suppressed
measurement range
with single point
calibration
Magnos27
Uras26,
Limas11
only for Uras26
only for Limas11
All analyzer modules
Oxygen Sensor
Test Gas Dew Point
42/24-10 EN Rev. 9
Zero Calibration
Test gas or sample-
component-free process gas
or substitute gas
Oxygen-free process gas or
substitute gas
Oxygen-free process gas or
substitute gas
Nitrogen or air
If the ambient air contains
sample gas components,
these must be removed with a
suitable absorber.
Water vapor must be
absorbed using a cooler.
Zero is not calibrated since it
is fundamentally stable.
The test gas dew point must be nearly identical to the sample gas dew point.
Generally observe the "Notes for Calibrating the Analyzer Modules" in Chapter 8,
Section C.
Chapter 1: Preparing the Installation
Span Calibration
Test gas or process gas having a known sample
gas concentration or substitute gas
Process gas with a known oxygen concentration
or a substitute gas
Measurement ranges ≥ 95 to 100 Vol.-% O
Test gas with O concentration in the selected
2
measurement range.
Test gas with any concentration of O
of the measurement ranges or ambient air.
Same moisture content as in the process gas.
In order to avoid accumulations of explosive
gas mixtures, do not use air as a test gas for
single-point calibration when measuring
flammable gases!
Process gas with a known oxygen concentration
or a substitute gas
Calibration cells (optional)
Span calibration without calibration cells: Test gas
for each detector or measurement component.
Span gas concentration 70 to 80 % of the end
value of the largest measurement range.
For suppressed ranges: Span gas concentration
within the suppressed range, if possible equal to
the end value.
Automatic and externally controlled calibration:
Test gas mixture for all detectors since all are
calibrated simultaneously.
Observe the notes in the "Analyzer Data Sheet"
when preparing the test gas mixtures.
During calibration of a multi-component analyzer,
possible cross-sensitivity and / or carrier gas
corrections by internal or external measurement
components are switched off. Therefore,
corrected measurement components should be
calibrated only using a test gas consisting of the
measurement component and an inert gas like N
Ambient (non-process) air with a constant oxygen
content (20.96 Vol.-%) or synthetic air.
For simultaneous calibration with analyzer
modules observe the notes on page 8-C-15.
:
2
within one
2
.
2
1-5