Emerson I-0021 Manuel D’Utilisation

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

NGA 2000

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Analyzer module setup

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Range parameters

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Autoranging control

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In the menu "Autoranging Control" you can set up the parameters for the autoranging
control of the current channel. If you want to set up the autoranging control of the other
channels of an MLT analyzer or analyzer module, you have to press the F3 key.
If the autoranging is enabled, the best range for the current concentration will be selected,
automatically.

Conditions:

♦ 

The range control has to be enabled!
To setup: See the line "Range control" in the menu "Range parameters", p. 5-25/26.

♦ 

The begin of range has to be zero for all four ranges of the current channel!
To setup: See menu "Begin and End of Ranges", p. 5-27.

♦ 

All four response times of the current channel must have the same value!
To setup: See menu "Response Times", previous page.

♦ 

The span gas concentration has to be in the correct range!
To setup: See menu "Span Gas Definition", section 5.1.1 p. 5-6.

The last three lines of the menu:

The parameters in these lines are factory settings and cannot be changed in this menu.

♦ 

Absolute, range lower limit: Normally is this value zero. It will only differ from zero for
differential measurements (see 5.1.12 p.5-57).

♦ 

Absolute, range upper limit: It is 120% of the largest end of range from putting into
operation. Higher values will not be accepted as end of range values!

Measure

Channel

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TAG

95.00 ppm

-- Autoranging Control --

Switch level hysteresis:

10  %

Usage of range -2:

Enabled

Usage of range -3:

Enabled

Usage of range -4:

Enabled

Absolute, range lower limit:

0.00  ppm

Calculate switch levels automatically:

Enabled

Usage of range -1:

Enabled

Absolute, range upper limit:

1000000  ppm