96 UMG70XV3-4EN 12.01.2009
10 Basic Measurement
10 Basic Measurement
10.7.3 Fine Adjustment of the Transducer Distance
In case of larger deviations, check if the entered parameters are correct or repeat the
measurement at a different location on the pipe.
Repeat the steps for all channels on which will be measured. The measurement will be
started automatically afterwards.
If the displayed transducer distance is adjusted, press EN-
TER.
The positioning procedure is started.
A bar graph S= displays the amplitude of the received sig-
nal.
If the LED of the measuring channel lights green, the sig-
nal is sufficient for a measurement (only FLUXUS G709).
If the LED of the measuring channel lights red, the signal is
not sufficient for a measurement (only FLUXUS G709).
Shift a transducer slightly in the range of the recommend-
ed transducer distance
• FLUXUS G704: until the bar graph has max. length
(max. 6 squares)
• FLUXUS G709: until the LED of the measuring channel
lights green.
The following can be displayed in the upper line with key
and in the lower line with key :
• transducer distance
• C (signal noise ratio)
If min. one box is displayed, the signal is sufficient for
the measurement. Optimum for the measurement are
three or more boxes.
• bar graph Q= (signal quality), must have max. length
• transit time TRANS. in µs
• bar graph S= (signal amplitude)
If the signal is not sufficient for measurement, Q= UNDEF
will be displayed.
After the precise positioning of the transducers, the recom-
mended transducer distance is displayed again.
Enter the actual (precise) transducer distance. Press EN-
TER.
Transd. Distance
A: 54 mm !
trans. 94.0 s
Q=
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