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NGA-2000 System Calibration
90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98 NGA 2000 Supplement - 3
1 Introduction
In opposite to the possibility to zero and span each analyzer module (MLT channel)
individually and independently from the others, System-Calibration (SYSCAL) allows to
combine the calibration procedures of all into a common process.
This is been achieved with a special assignment of the valves. The idea is not longer to
require for each gas of each analyzer an own valve.
Instead of we have a pool of valves. The valves of this pool can be assigned to the different
gases of the analyzers. That also means different analyzers can share the same valve for
their gases, e. g. for span gas mixtures or a common zero gas valve for several channels. So
we have the possibility to reduce the number of valves and also the consumption of
calibration gases.
The program, which will allow this, runs on the CM (Control Module) and needs
programmable I/O’s (Input/ Output Modules SIO or DIO).
SIO: Standard I/O Module
DIO: Digital I/O Module
SIO and DIO can be located in a platform, an MLT or a TFID analyzer.
The displayed menus are also inscripted with the appropriate LON-Variables.