Product Description
MCS100FT · Operating Instructions · 8011893 V2-1 · © SICK AG 13
Subject to change without notice
2.2.1 Method of operation
The MCS100FT operates independently.
● Sampling probe backflush and test gas feed are performed cyclically and can also be
started manually.
● The MCS100FT signals an uncertain operating state with status indicators (
p. 33,
§5.4.1). The MCS100FT remains in Measuring mode.
● Should a malfunction occur, the MCS100FT switches automatically to “Stand-by” mode
(
p. 95, §8.3.1). The sample gas line and the sample gas path in the MCS100FT are
automatically purged with instrument air in this mode.
The analog outputs remain at the last valid measured value.
The operational states are signaled by status signals and entered in a logbook.
2.2.2 Internal functional units
The MCS100FT contains the following independent functional units:
● The MCS100FT analyzer (with Fourier Transform Infrared spectrometer (FTIR spectrom-
eter) and O
2
sensor).
● The FID-100FT (analyzer) (option).
● The System Control Unit (SCU) that manages the MCS100FT analyzer and (optionally)
the FID-100FT analyzer and contains the operator panel.
All functional units are independent and have their own menu structure on the operator
panel with own parameter settings, own password levels, own logbook, etc.
Functions of the MCS100FT analyzer
● The MCS100FT analyzer records measured values and cross-sensitivities.
It calculates the sample gas concentrations on a scaled (pressure, temperature) basis.
● Menu item “MCS100FT” (
p. 37, §5.5.3) serves to view, and set parameters (password
protected), for the MCS100FT analyzer settings on the operator panel.
FID-100FT (option) functions
● The FID-100FT analyzer records measured values (uncorrected raw values).
● Menu item “FID/100FT” (
p. 38, §5.5.4) serves to view, and set parameters (password
protected), for the FID-100FT analyzer settings.
Functions of the System Control Unit (SCU)
● As higher level control unit, the SCU itself provides the operator panel to operate the
MCS100FT, the FID-100FT (option) and the SCU.
● The SCU reads the scaled MCS100FT analyzer measured values and the FID-100FT
(option) measured values, and performs conversions (e.g.: Conversion to dry flue gas),
averaging, etc.
● The SCU contains the programs (formulas) that control the sequences (e.g. zero cycle)
of the MCS100FT analyzer and the FID-100FT.
● The settings of the SCU and the measured values calculated by the SCU can be viewed
and set (with password protection) using the “System Control Unit” menu item (
p. 36,
§5.5.2).
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