9 Measurement
FLUXUS F60* 9.3 Start of the measurement
105
UMFLUXUS_F60xV5-0EN, 2017-10-16
Consistency check
If a wide range for the sound speed has been entered in the program branch Parameter
or the exact parameters of the fluid are unknown, a consistency check is recommended.
The transducer distance can be displayed during the measurement by scrolling the key
, see Fig. 9.3.
The optimum transducer distance is displayed in brackets (here: 50.0 mm) in the upper
line, followed by the entered transducer distance (here: 54.0 mm). The latter value has to
correspond to the adjusted transducer distance.
• Press ENTER to optimize the transducer distance.
The optimum transducer distance is calculated on the basis of the measured sound
speed. It is therefore a better approximation than the first recommended value which had
been calculated on the basis of the sound speed range entered in the program branch
Parameter.
If the difference between the optimum and entered transducer distance is less than spec-
ified in Tab. 9.4, the measurement is consistent and the measured values are valid. The
measurement can be continued.
• If the difference is greater, adjust the transducer distance to the displayed optimum value.
• Afterwards, check the signal quality and the signal amplitude bar graph.
• Press ENTER.
Fig. 9.3: Consistency check
Tab. 9.4: Standard values for signal optimization
transducer frequency
(3rd character of the technical
type)
difference between the optimum and the entered
transducer distance [mm]
shear wave transducer Lamb wave transducer
F - -60…+120
G 20 -45…+90
H - -30…+60
K 15 -20…+40
M 10 -10…+20
P8-5…+10
Q6-3…+5
S3-
To Next Page
Loading...
Need help?
General
