Emerson NGA2000 Manuale Utente

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

NGA 2000

After setting-up there is the possibility to start 3 different modes:

system zero-calibration: 

In this mode a zero-cal of all modules, which are
enabled for SYSCAL, will be performed. The order of
modules depends on purge time for zero-valves
because the whole calibration is time optimized.

system zero/span-calibration: 

In this mode will be performed a zero-cal and a span-
cal for every enabled AM. The order of calibration is
optimized to have a minimum of calibration time. The
only condition is to have for each AM first the zero-cal
and after this the span-cal. With zero-cal an AM is
zeroed with all ranges together, the span-cal is done
separately for all available ranges. A range is available
if its span-gas value is > 0.0.

user defined sequence program:  In this mode the user is responsible for the

optimization. See setup of this mode.

gas test:

It is also possible to switch for test purposes onto a
specific gas of a specific module.  A calibration is not
done.

Any mode can be started by the following instances:

• 

Manually by operator interaction

• 

Triggered by programmable input (DIO)

• 

AK-protocol command

• 

Programmed time-automatic (no gas test possible!)

• 

LON-Variable CMFUNC

It is also possible to cancel a running system calibration. This can be done by the following
instances:

• 

Manually by operator interaction

• 

Triggered by programmable input (DIO)

• 

AK-protocol command

• 

LON-Variable CMFUNC

There is no priority by which way SYSCAL can be started. If SYSCAL was started it can
not be restarted by a further instance. Only after canceling it can be restarted.