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P25: - - - a
Selection of Echo within the measuring window
A so-called measuring window is formed around the echo signal. The position of this measuring window determines the flight time for calculation
of the distance to the target. (the picture below can be seen on the test oscilloscope)
Received
signal
amplitude
Echo 1.
t
"t" ultrasound flight time
Echo 2.
Some applications involve multiple (target + disturbing) echoes even within the measuring window. Basic echo selection will be done by the
Quest + software automatically. This parameter only influences the echo selection within the measuring window.
a
Echo in the window to
be selected
Remark
0
With the highest
amplitude
For most applications (both with liquids and solids)
1
First one
For liquids applications with multiple
echoes within the Measuring Window
FACTORY DEFAULT: 0
P26:
Level elevation rate (filling speed) (m/h)
P27:
Level descent rate (emptying speed) (m/h)
These parameters provide additional protection against echo loss in applications involving very heavy fuming.
The parameters must not be smaller than the fastest possible filling/emptying rate of the actual technology.
For all other applications, use the factory default setting.
FACTORY DEFAULT
:
2000 for both
P26
and
P27
