Emerson NGA2000 Manuale Utente

NGA 2000

90003749(1) [NGA-e (Software CLD 2.3/MLT 3.1.X)] 04/98

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Analyzer module set up

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Gas measurement parameters

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Linearization functions

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From the menu "Linearization functions" you can change to several submenus, where you
can linearize the ranges and optimize the linearization functions:

♦ 

Change to the line you want with the 

↓↓

 -key or the 

↑↑

 -key.

Note:

Normally, the CLD is working linearly in the whole range. Therefore you do not have
to linearize generally ! If you will find deviations from the linearization, you should control
the ozone and sample gas supply. Optimize it, if necessary! Usually, the reason for
deviations will be a defect in the ozone supply.

Press the ENTER key or the 

→

→

 -key in the line "Polynomial set up..." to change to the

corresponding menu:

HOME

ESCAPE

INFO

CLD

95.0 ppm

Linearization functions

Polynomial set up...

Use the polynomial set up to generate a linearizing
polynomial from up to 20 gases. With more than 6 gases
it will produce a fourth order polynomial linearizer.

correction, to bring up to three points precisely onto
the curve.

Midpoint correction set up...

Use the midpoint correction for a piecewise-linear final