Emerson I-0021 Manuel D’Utilisation

Page de 238
90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98
NGA 2000
5 - 9
Main Menu — Analyzer and I/O-module expert configuration
↓↓
Analyzer module setup
↓↓
Calibration parameters
↓↓
Calibration procedure setup
↓↓
In the menu "Calibration Procedure Setup" you can set up the parameters for the cali-
bration procedure of the zeroing and spanning in one channel. If you want to set up the
parameters of the other channels of an MLT analyzer or analyzer module, press the F3 key.
Set up parameters:
♦ 
Select any line of variables with the 
↓↓
 -key or the 
↑↑
 -key.
♦ 
Select the variable with the 
88 
 -key or the 
 -key.
♦ 
Select any digit with the 
 -key or the 
 -key and adjust a new value with
the 
↑↑
 -key or the 
↓↓
 -key
resp. select the whole parameter with the 
↑↑
 -key or the 
↓↓
 -key.
♦ 
Confirm the new value with the 
88 
 -key or
cancel and go back to the last value with the F2 key.
Lines of variables "Purge time" / "Procedure times-out after" and
"Stability time" / "Averaging time" – Informations about the calibration procedures setup:
The measurement signal should be stable in a certain range before zeroing and spanning.
Therefore the analyzer cell should be purged enough with zero gas or span gas before
calibration. Then, after the purge time, the stability time is running. During the stability time
the average over two signals will be calculated. The averaging time determines the time
difference between these two signals.
Measure
Channel
Back...
TAG
F1
F2
F3
F4
F5
95.00 ppm
-- Calibration Procedure Setup --
Purge time:
10  s
Analog output during calibration:
Tracking
Span ranges:
Together
Valve position:
Samplegas
Stability time:
30  s
Averaging time:
5  s
Procedure times-out after:
120  s
5.1 Analyzer Module Setup
5.1.1 Calibration Parameters – Calibration procedure setup