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NGA 2000
90003749(1) [NGA-e (Software CLD 2.3/MLT 3.1.X)] 04/98
Main Menu — Expert controls and set up
↓↓
Analyzer module set up
↓↓
Gas measurement parameters
↓↓
Linearization functions
↓↓
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.
Polynomial set up:
Press the ENTER key or the →→ -key in the line "Polynomial set up..." to change to the
corresponding menu:
HOME ESCAPE INFO
CLD
F1 F2 F3 F4 F5
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
5.1.8 Analyzer Module Set up
Linearization Functions