39
S3 Q9 c
RT F
↓
Press key
during the measurement to change the display in the upper line, press key
to change the display in the
lower line.
The character
*
indicates that the displayed value (here: flow velocity) is not the selected
physical quantity.
10.3
Status Line
Important data on the ongoing measurement are displayed in the status line. The quality and precision of the ongoing
measurement can be estimated.
Press key
during the measurement to scroll through the upper line to the status line.
value
explanation
S
0
signal amplitude
< 5 %
…
…
9
≥
90 %
Q
0
signal quality
< 5 %
…
…
9
≥
90 %
c
√
↑
↓
?
sound speed
comparison of the measured and the expected sound speed of the medium. The expected sound
speed is calculated on the basis of the medium parameters (medium selected in the program branch
Parameter
, temperature dependence).
ok, is equal to the expected value
> 20 % of the expected value
< 20 % of the expected value
unknown, cannot be measured
R
T
L
↕
?
flow profile
information about the flow profile based on the Reynolds number
fully turbulent flow profile
fully laminar flow profile
the flow is in the transition range between laminar and turbulent flow
unknown, cannot be calculated
F
√
↑
↓
0
?
flow velocity
comparison of the measured flow velocity with the flow limits of the system
ok, the flow velocity is not in the critical range
the flow velocity is higher than the current limit
the flow velocity is lower than the current cut-off flow (even if it is not set to zero)
the flow velocity is in the offset range of the measuring method
unknown, cannot be measured
Flow Velocity
*
2.47
m/s
