Table 10- 2 Description Of Graph Screen Text Display Parameters - Siemens FUS1010 Operating Instructions Manual

Troubleshooting
10.3 Test Facilities Graph Screen
Signal Masking Function: (Hot Key 7)
Under conditions of extremely low signal amplitude, a noise spike associated with the flow
meter receive signal window may be present on the extreme left side of the graph display. If
this spike is large enough it may interfere with the signal detection routines.
1. To eliminate this noise from the signal processing routines, press the <7> key to invoke
2. Press <0> to exit this command.
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 keypad to invoke this function.
Table 10- 2 Description of Graph Screen Text Display Parameters
Screen Text Parameters
F
VS
[ ]
D
Tn
dT
S
SN
170
the [Mask Set #] command, then press the <+> key until the noise is no longer present in
the receive waveform.
Flow
Vs m/s
Display Metrics
Correlated plot
Centroid Mark
Damping
Tn (usec)
DeltaT (nsecs)
Signal Strength
Signal-to-Noise Ratio
Envelope
Menu List Item
Operating Instructions, 01/2013, A5E02951520-AC
Description
Measured flow rate in selected flow
units.
Sound Velocity in meters per second.
Represents the digital sample position
of the receive window.
Displays the receive waveform in its
proper superposition or registration.
The true delta time will be displayed by
NOT selecting "Correlated Plot".
Indicates with a large vertical marker
the peak energy of the receive
waveform.
Displays the minimum and maximum
digital damping exponent along with the
active damping exponent.
Receive signal transit time in
microseconds.
Transit time delta (difference) in
nanoseconds.
Displays %Valc (amplitude), %Vaer
(aeration factor) and numeric ALC.
Indicates the signal to noise ratio of the
receive signal. Increased damping will
increase the S/N ratio as the
asynchronous noise reduces.
Percentage change of the signal from
Initial Makeup conditions.
FUS1010 IP65 NEMA 4X & IP66 NEMA 7