5.1 Analyzer Module Setup

5.1.4 Cross Interference Compensation

Main Menu — Analyzer and I/O-module expert configuration

 

 

 

 

Analyzer module setup

 

 

 

 

Cross interference compensation

 

 

 

 

 

 

 

 

 

 

 

 

TAG

95.00 ppm

 

-- Cross Interference Compensation --

 

 

 

 

 

 

 

Compensation is:

Disabled

 

 

Selected interference component:

1

 

 

Choose interference source channel...

 

 

Interference factors...

Calculate factor for selected interference component !

Remove selected component !

1. Interference component:

 

----

2. Interference component:

 

----

3. Interference component:

 

----

Measure

 

Channel

Back...

 

F1

F2

F3

F4

F5

In the menu "Cross Interference Compensation" you can calculate the influence of other components to the result of the analyt component. You can take maximum three interference components for each channel of the MLT analyzer. It is not possible to calculate the cross interference compensation for signals of auxiliary modules!

If you want to calculate the compensation for other channels of an MLT analyzer or analyzer module, you have to press the F3 key.

Conditions:

¨You only have to use pure gases or gases in inert atmosphere (e.g. CH4 in N2) for all components that you need to calculate the compensation. Do not use mixed gases!

¨You have to calibrate all channels you need to calculate the interference compensation. Besides, all channels must be part of the same MLT analyzer or analyzer module.

Calculation of the Cross Interference Compensation:

1)In the line "Compensation is" you have to select "Disabled". If you select "Enabled" the result will be influenced by earlier values.

2)In the line "Selected interference component" you have to select the number of the current interference component.

3)Press the 8 -key or the -key in the line "Choose interference source channel..." to change to the submenu "Channels" (illustration see next page):

·Select the line you want with the -key or the -key.

·Choose the interference source channel with the 8 -key or the -key: The display will go back to the menu "Cross Interference Compensation" automatically. The tag of the interference component will appear in one of the last three lines in the menu. The position depends on the number selected in the line "Selected interference component".

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

NGA 2000

5 - 31