Siemens SITRANS 7ME3500, Operating Instructions Manual, Page: 162 / 296

Troubleshooting
10.3 Test Facilities Graph Screen
FUE1010 IP65 NEMA 4X
160
Operating Instructions, 12/2014, A5E03086491-AC
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
the [Mask Set #] command, then press the <+> key until the noise is no longer present in
the receive waveform.
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- 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 (wave-
form 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.
<MENU> Exits the Graph Screen and returns to
the main menu.
<1> MinDamp Minimum damping exponent control (+
or - to increase or decrease).
<2> MaxDamp Maximum damping exponent control (+
or - to increase or decrease).
<3> TnSet Transit time adjustment (use + or - to
move Tn marker).
<4> ZCOSet Zero Crossover adjustment (use + or -
to move crossover marker).
<5> HiSet Signal envelope threshold level (use +
or - to move threshold). Note: Signal
envelope screen must be activation.
Press = sign to activate
<6> LoSet Signal envelope threshold level (use +
or - to move threshold). Note: Signal
envelope screen must be activation.
Press = sign to activate