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5-47
CQO:1010PVXFM-3
Section 5
Data Span/Set/Cal
Calib. Table 3
Index Variable 3
Same List as
Index Variable 1
Calib. Table 3
New Point
Cal. Index Value
x.xxx
PosFlow Corr
x.xxx
NegFlow Corr
x.xxx
Accept/Clear
Accept Pt.
Clear Pt.
Table Active 3
No
Clear Table 3
No
Yes
THE DATA SPAN/SET/CAL MENU STRUCTURE
(continued)
5.7.1 SPAN DATA
The Span Data menu allows you to set 0% and 100% output limits for volumetric flow (Vfo), absolute
flow (Vf) and sonic velocity (Vs). Each menu cell shows appropriate rate units and time base. If you
change flow rate units after spanning the system, the computer automatically updates the output data
setup to reflect the change. Span limits apply to both the analog outputs and the on-screen stripchart.
The flow outputs operate as follows:
Maximum span values represent
:
Minimum span values represent:
100% of span
0% of span
Current output of 20 mA
Current output of 4 mA
Voltage output of 10 Vdc
Voltage output of 0 Vdc
Pulse output of 5000 Hz
Pulse output of 0 Hz
Vfab is the absolute magnitude of the volumetric flow rate (Vfo). There
are no menu cells provided to span this output. Vfab shares the Vfo span
entries. The Vfab minimum span is always zero. The maximum span for
Vfab is the largest absolute value of either the min. or the max. flow rate
(Vfo) entries. For example, a span b10 GPM and -30 GPM, spans
the Vfab output from 0 GPM to 30 GPM.
Vfab
Spanned Absolute
Volumetric Flow
Rate:
Vs is the sonic velocity in meters-per-second (m/s) of the flowing liquid.
The min. and max. Vs entries establish the Vs span. Max Vs (m/s) de-
fines 100% of span. The Min Vs (m/s) defines 0% of span.
Vs
Spanned Liquid
Sonic Velocity:
The minimum and maximum flow rate entries establish the Vfo span. The
[Max Flow] menu cell sets 100% of span. The [Min Flow] menu cell sets
0% of span. Use signed numbers for bi-directional spanning. Note that
negative (reverse) flow is always lower than positive flow, whatever its
absolute magnitude. For example, for a flow measurement range of -30
GPM to +10 GPM, the 4 mA span will be -30 GPM, and the 20 mA span
will be +10 GPM.
Vfo
Spanned Volumetric
Flow Rate:
Summary of Contents for SITRANS FUH1010PVDX
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