Emerson Process Management GmbH & Co. OHG
3-28
X-STREAM X2FD
Instruction Manual
HASXMDE-IM-EX
01/2015
3.9 Checking the settings
3.9.4.1 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-
de
fi
ned physical measuring ranges, as listed
e.g. in the INFO-RANGES.. menu (parame-
ters „MinRange“ and „MaxRange“):
All measurement speci
fi
cations
like repeatability, drift, etc. are
related to these physical measu-
ring ranges only! Scaling or
zooming cannot improve analog
output speci
fi
cations to values
better than speci
fi
ed by the phy-
sical measuring ranges!
Furthermore the tables apply only to analog
output scaling meeting the form „0 ... Min-
Range“ to „0... MaxRange“ (means always
0
as "LowScale" value)!
If "LowScale" is set to a value other than
0,
speci
fi
cations are not longer applicable to
analog outputs
! The same applies to the
zoom parameter "Position" (
previous
page), if set to
HighScale
!
Example
Analyzer data:
MinRange: 500 ppm
MaxRange: 5000
ppm
Low
Scale
High
Scale
Statement
Scaling
settings,
where tables
are applicable
0
500
Parameter "LowScale"
is 0 and
"HighScale" within the
limits of "MinRange"
and "MaxRange"
0
1000
0
2375
0
5000
Scaling
settings,
where tables
are NOT
applicable
100
500
Parameter "LowScale"
different 0
500
1000
375
2500
4000
5000
0
300
Parameter "HighScale"
lower than "MinRange"
0
5100
Parameter "HighScale"
higher than "MinRange"
Tab. 3-2: Analog outputs - Scaling (examples)
