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Instruction Manual
HAS60E-IM-HW
June 2007
NGA 2000 CLD
3 - 5OperationEmerson Process Management GmbH & Co.OHG
Calibration Parameters
This menu provides various parameter settings for all
calibration performed from Basic or Expert modes.
Main (Menu)...
Analyzer and I/O expert controls & setup...
Analyzer module setup...
Calibration parameters...
Figure 3-7: Calibration Parameters Display
Calibration adjustment limits:
Set to "Disable" to recover from a calibration failure.
Calibration averaging time:
Set the time used by the analyzer to average its reading
during calibration. A longer time will give a better calibra-
tion.
When using a system calibration, take care that averag-
ing time is long enough for the analyzer to reach a settled
reading. Otherwise, calibration may fail !
Calibration failure alarm:
When turned on ("yes"), issues a warning if the analyzer
has to change its calibration by more than the Cal Fail-
ure Error, if warning alarms are enabled.
Cal failure error allowed:
The percentage by which the calibration can change
before an alarm is triggered if the Calibration Failure
Alarm is enabled.
Calibration time out:
Sets how long the analyzer will wait for the signal to sta-
bilize before issuing a Warning.
Zero (Span) ranges:
Used to select wether to calibrate ranges "TOGETHER"
or "SEPARATELY". If together, zeroing or spanning will
go through each range one by one. If the change re-
quired is too great, it will fail and send an alarm if warn-
ing alarms are enabled. In this case, Disable Calibration
Adjustment Limits and try again. First check that the cali-
bration gases are correct. If non-zero gases are used, or
the changes are great, zero and span may have to be
repeated a few times.
In case that a system calibration is used, set all ranges
to "SEPARATELY".
Please note that Software will accept only span gas val-
ues that are a factor of 10-110% of the measuring range.
From that, it is possible, that not all of the four measuring
ranges can be calibrated altogether. In that case you will
have to set the option to "SEPARATELY".
In case that a calibration is not possible because the
difference of display to the true value is too great, switch
of the "CalCheck" option.
Line#1
HOME ESCAPE INFO
0.000 ppm
CAL NO/NOx
Calibration Parameters
Calibration adjustment limits:
Calibration averaging time:
Calibration failure alarm:
Cal failure error allowed:
Calibration time out:
Zero ranges:
Span ranges:
Disabled
9 s
Ye s
50 %
59 s
SEPARATELY
SEPARATELY