L ST 3 0 0 |
CO M PAC T U LT R A S O N I C L E V EL T R A N SM I T T ER | L S T 3 0 0 – EN R E V. E
45
5
Press
to select the position to be changed to the
linearization point number . The first point to update in this
example is point
00
.
6
Press
to change the position to
Lev
.
7
Use
to enter the editing menu .
8
Set the level for point 00 in the editing menu .
In this example level
0 .000
m is set .
9
Use
to select
OK
and return to the “Linearization Table”
menu .
10
Press
to change the position to % for point 00.
11
Use
to enter the editing menu .
12
Set the level for point 00 in the editing menu .
In this example a percentage of
0%
is set for point 00 .
13
Use
to select OK and return to the “Linearization Table”
menu .
14
Repeat steps 5 to 13 for linearization point 01 and 02
according to the data in the table below:
Point
Level
%
00
0.000 m
0.00 %
01
1.000 m
14.30 %
S02
3.000 m
100 %
Open channel flow
The LST300 open channel flow function calculates the flowrate
in an open channel by measuring level and converting it to a
flowrate using standard equations . The automated calculation
of parameters can only be done using DTM or EDD . Alternatively
the calculation can be done offline, and the setup can be done
in the field on the HMI using the pre-calculated maximum flow
value and linearization table .
The open channel flow is not calculated directly . A linearization
table and the maximum flowrate are calculated and
downloaded to the device using DTM or EDD . Then this
linearization table is used on the device to calculate the
flowrate .
LST300 supports the following 12 channels:
• Rectangular thin plate weir
• Triangular notch thin plate weir
• Rectangular broad crested weir
• Rectangular throated flume
• Trapezoidal throated flume
• U throated flume
• Round nose horizontal broad crested weir
• Parshall flume
• Palmer bowlus flume
• Round pipe
• Leopold lagco flume
• Cut throat flume
Any custom or special channels with available linearization
transfer curve can also be configured manually .
Summary of Contents for LST300 Series
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