Hold Set Function: (Hot Key 8)
The [Hold Set #] command is used to set the Hold Set number higher if intermittent mis-
registration occurs. Press the <8> key on the kepad to invoke this function.
Table 10-2 Description of Graph Screen Text Display Parameters
Screen Text Parameters Menu List Item Description
F Flow Measured flow rate in selected flow
units.
VS Vs m/s Sound Velocity in meters per second.
[ ] Display Metrics Represents the digital sample position
of the receive window.
Correlated plot Displays the receive waveform in its
proper superposition or registration.
The true delta time will be displayed by
NOT selecting "Correlated Plot".
Centroid Mark Indicates with
a large vertical marker the
peak energy of the receive waveform.
D Damping Displays the minimum and maximum
digital
damping exponent
along with the
active damping exponent.
Tn Tn (usec) Receive signal transit time in
microseconds.
dT DeltaT (nsecs) Transit time delta (difference) in
nanoseconds.
S Signal Strength Displays %Valc (amplitude), %Vaer
(aeration factor) and numeric ALC.
SN Signal-to-Noise Ratio Indicates the signal to noise ratio of the
receive signal. Increased damping will
increase the S/N ratio as the
asynchronous noise reduces.
Envelope Percentage change of the signal from
Initial Makeup conditions.
Table 10-3 Hot Key Summary
Key Command Line Description
<+> Expands (magnifies) waveform to view
more detail.
<-> Contracts waveform to view more of the
waveform.
<Left Arrow> Shifts receive window to the left
(waveform to the right).
<Right Arrow> Shifts receive window to the right
(waveform to the left).
<CLR> Brings waveform to the center of the
screen.
<ENTER> Calls up Text Display menu items. <Left
Arrow> to return to graph.
Troubleshooting
10.3 Test Facilities Graph Screen
FUP1010 IP67 Portable Flowmeter
Operating Instructions, 02/2010, A5E02951522A Revision 01
127
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