NIVELCO EasyTREK SCD-31 4 Series, Installation And Programming Manual, Page: 23 / 32

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P24: - - - a Target tracking speed FACTORY DEFAULT: 0
With this parameter the evaluation can be sped up at the expense of the accuracy.
a Tracking speed Remark
0 Standard For most applications
1 Fast For fast changing level
2 Special
For very special cases only, as this reduces the maximum measuring range to 50% of the nominal value! The
measuring window (P25 and P33) is inactive and the EasyTREK will respond practically instantly to any target.
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 of the target. (the
picture below can be seen on the test oscilloscope).
Some applications involve multiple ( 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
Remarks
0 With the highest amplitude For most applications (both liquids and solids)
1 First one For applications with multiple echoes within the Measuring Window
2 Largest one Recommended for applications with floating material in the air
P26: - - - - Level elevation rate (filling speed) [m/h] FACTORY DEFAULT: 500
P27: - - - - Level wane rate (emptying speed) [m/h] FACTORY DEFAULT: 500
Use these parameters to provide additional protection against echo loss in applications involving dust during the filling process (powders, dusting
granules). Reliability of the measurement can be enhanced by the correct setting of this parameter.
These parameters must not be smaller than the fastest possible filling/emptying rate of the actual technology.
Caution! In tanks with a conical or pyramidal bottom, the rate of change of level at the bottom of the tank increases significantly.