Emerson Rosemount Analytical X-STREAM X2 Series Instruction Manual page 165

Instruction Manual
HASX2E-IM-HS
10/2012
5.7.4.1 References to the Accuracy of the Analog Outputs
Scaling or zooming relates to the analog
outputs only and does not affect front panel
display nor serial (Modbus) interface output
of measuring results!
X-STREAM analyzers are shipped with pre-
defined physical measuring ranges, as listed
e.g. in the INFO-RANGES.. menu (parame-
ters „MinRange" and „MaxRange"):
All specifications like repeatabi-
lity, drift, etc. (
3-8, page 3-18) are related to these
physical measuring ranges only!
Scaling or zooming cannot im-
prove analog output specifica-
tions to values better than spe-
cified by the physical measuring
ranges!
Example
Analyzer data:
MinRange: 500 ppm
MaxRange: 5000 ppm
Tab. 5-2: Analog Outputs - Scaling (examples)
Emerson Process Management GmbH & Co. OHG
5.7 Checking the Settings
tables 3-7 and
Low
Scale
Scaling
settings,
where tables
are applicable
100
500
Scaling
375
settings,
4000
where tables
are NOT
applicable
Furthermore the tables apply only to analog
output scaling meeting the form „0 ... MinRan-
ge" to „0... MaxRange" (means always 0 as
"LowScale" value)!
If "LowScale" is set to a value other than 0,
specifications are not longer applicable to
analog outputs! The same applies to the
zoom parameter "Position" (
page), if set to HighScale!
High
Scale
0 500
Parameter "LowScale"
is 0
0 1000
"HighScale" within the
0 2375
limits of "MinRange"
and "MaxRange"
0 5000
500
1000
Parameter "LowScale"
different 0
2500
5000
Parameter "HighScale"
0 300
lower than "MinRange"
Parameter "HighScale"
0 5100
higher than "MinRange"
X-STREAM X2
previous
Statement
and
5-27