Detection Modes; The Test Facilities Graph Screen - Siemens SITRANS FUG1010 IP65 NEMA 4X Instruction Manual

Section 4

4.11.7 DETECTION MODES

FUG1010GCN flowmeters Version 3 or higher are equipped with a Test Facilities Graph Screen. The
following paragraphs explain how the Test Facilities Graph Screen is used for troubleshooting FUG1010GCN
flowmeters.

The Test Facilities Graph Screen

NOTE: The following is intended for 1010 VFMT systems with Graphic Displays only. For VFMT
capable FUS1010X systems (with or without digital displays) or FUS1010 blind systems,
the digital receive signal can only be viewed as a text dump over the RS-232 output (i.e.,
by pressing the [F1] key and then the [.] (period) key). Access to the digital damping
parameters can be found in the [Site Setup] menu cell of the Diagnostic Data menu.
Refer to the appropriate field manual for details.
When operating in the transit time mode the Test Facilities Graph Screen is an exceptional diagnostic tool
for troubleshooting problem applications or simply determining receive signal quality. The primary func-
tion of this screen is the display of the digitized receive signal waveform with similar appearance and
function of a digital oscilloscope. This screen also allows the user to override some of the 1010 default
settings by permitting adjustment to the measured transit time, the digital averaging and the zero cross-
over used in the measurement of the up/down transit time difference. The figure shown below is a
representation of the 1010 diagnostic graph.
NOTE: The Test Facilities Graphic Screen requires significant CPU overhead. The FUG1010GCN
flowmeter should not be left in this mode during normal operation, where the Datalog-
ger is the primary output, or during calibration work.
F 0.73
VS 1469.73
[ ] 1691:1929 476
D 4:4 4
Tn 55.06 55.06
d T 3.11
S 72 1
SN 124:1
CQ 17:1
TN marker
Command Line appears here
91
3
Digitized Receive Signal
Crossover Marker
4-70
1010GCNFM-3C