Technical data

BKI 03 ATEX 027X  spa3804a0600p_06  23 / 44
P25: - - - a Selection of Echo within the measuring window FACTORY DEFAULT: 0
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
Echo 2.
t
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 influences the echo selection only within the measuring window.
a Echo in the window to be selected Remark
0 With the highest amplitude Most frequently used
1 First one For liquids applications with multiple echoes within the Measuring Window
P26: - - - - Level elevation rate (filling speed) (m/h or ft/h) FACTORY DEFAULT: 2000
P27: - - - - Level descent rate (emptying speed) ) (m/h or ft/h) FACTORY DEFAULT: 2000
These parameters provide additional protection against echo loss in applications involving very heavy fuming. Correct setting increases reliability of
the measurement during filling and emptying. The parameters must not be smaller than the fastest possible filling/emptying rate of the actual
technology.
Attention! Level changing rate is rather different near to the conical or spherical bottom of such a vessel.