Vega FiberFlex LFXG-H, Operating Instructions Manual

Page: 63 / 102

Advanced functions
LFXG-H Installation and Operation Guide 61
Percent Count Range The compensated measurement counts that express
as a percent of the counts at the high and low-
endpoints of the calibration (determined with the two
point calibration.) This quantity shows where the
current measurement is in relation to the total count
range.
% count range = 100 x (C
L
- C
S
) / (C
L
- C
H
)
where
C
S
= sum counts
C
L
,C
H
= counts at Cal Low level and Cal High level
C
L
-C
H
= counts range
Percent Process Span The measurement value as a percent of the
measurement span. Enter the maximum and minimum
level values in the Setup tab.
A graph of percent count range vs. percent process
span indicates the non-linearity of the radiation
transmission’s measurement. If using a table linearizer,
the values in the table are percent count range and
percent process span.
Unfiltered PV The level in inches without the time constant or
rectangular window filter.
Uncompensated PV The level of process before any process compensation.
Final PV The process value in engineering units after applying
the filter.This value relates to the current loop output.
Aux Counts The frequency-input counts from optional auxiliary
input.
Filtered Aux Counts The filtered auxiliary counts. Enter the filter dampening
value for the auxiliary input’s filter time-constant.
Table 4.1
Process Chain tab — display values (continued)
Value Description