NGA-2000 System Calibration

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.

90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98

NGA 2000

Supplement - 3