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90003749(1) [NGA-e (Software CLD 2.3/MLT 3.1.X)] 04/98
NGA 2000
6 - 7
In the menu "Units control" you can determine the switch point for the signal value from
ppb to ppm, respectively from ppm to vol%. But, the set-ups in this menu are only
operative for earlier versions of analyzers or analyzer modules. The switching will work
automatically depending on the signal value for analyzers from the version 2.2 on.
Set up parameters:
♦ Select any line of variables with the ↓↓ -key or the ↑↑ -key.
♦ Select the variable with the ENTER key or the →→ -key.
♦ Select any digit with the ←← -key or the →→ -key and adjust a new value with
the ↑↑ -key or the ↓↓ -key.
♦ Confirm the new value with the ENTER key or cancel and go back to the last value with
the F2 key.
Lines of variables "ppm to vol% switch point" and "PPB to PPM switch point":
In these lines you can determine which signal value shall switch the displayed concentra-
tion from ppb to ppm resp. from ppm to vol% (or reverse).
Line of variables "Hysteresis":
The value selected in this line will determine the range for the switching of the concen-
tration unit.
Example:
♦ Hysteresis is 10% and switch point ppm <–> vol% is 10000 ppm
♦ The concentration value displayed will change with increasing signal values from ppm
to vol% at: 11000 ppm, i.e. the concentration of 11000 ppm will be displayed as 1.1%.
♦ The concentration value displayed will change with decreasing signal values from vol%
to ppm at: 0.9%, i.e. the concentration 0.9% will be displayed as 9000 ppm.
HOME ESCAPE INFO
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95.0 ppm
Units control
This control only acts on analyzers prior to version 2.2
ppm to vol % switch point: 10000 ppm
PPB to PPM switch point: 100.0 ppb
Hysteresis: 10 %
which cannot set their own units.