F1
F2
F3
F4
CLEAR
(Batch/Tot register)
Clears the Batch/Sample Totalizer register. The flowmeter maintains a separate
Totalizer register for Batching or Sampling applications but cannot be accessed
directly. It is
used for relay control only. If you assign the system relay to this function,
a momentary (200 mS) relay pulse occurs whenever the BATCHTOT register
accumulates a specified liquid quantity. In the [Batch/Sample Tot] menu cell the
required total flow volume is entered to activate the relay,. This numeric entry must
reflect the selected flow total units. The [Totalizer Scale] menu cell shows the
applicable flow total units. The sign of the Batch/Sample Total determines positive
or negative accumulation.
F1
F2
F3
F4
CLEAR
(Makeup Latch)
Clears the Makeup Latch. Refer to Span Data programming for details.
*Use the <F1> key as the "Lead-in commnad" for 4-Path Totalizer operations.
7.2 Span Data
The Span Data menu allows you to set 0% and 100% output limits for volumetric flow (Vfo),
absolute flow (Vfab)
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:
Vfo
Spanned Volumetric::
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
always is 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.
Vfab
Spanned Absolute Volumetric Flow Rate:
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 between +10 GPM
and -30 GPM, spans the Vfab output from 0 GPM
to 30 GPM.
Vs
Spanned liquid sonic Velocity:
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)
defines 100% of span. The Min Vs (m/s) defines
0% of span.
Functions
7.2 Span Data
FUP1010 IP67 Portable Flowmeter
76
Operating Instructions, 02/2010, A5E02951522A Revision 01
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