Siemens Sitrans Probe LU Instruction Manual page 93

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(Probe LU Manual) Vendor Manual
Flow
The level and volume breakpoints can be also be used to calculate head level and
flow rate in an open channel device. (For more information please see Open
Channel Monitoring (OCM) on page 39.)
Use the level breakpoints to enter head level values, and the volume breakpoints
to enter flow volumes. Each segment defined by a head breakpoint requires a
corresponding flow value, so that SITRANS Probe LU can make the head-to-flow
calculations.
Use the Flow table associated with your open channel device (Parshall flume, v-notch
weir, or other measuring device) to calculate the flow rate for each breakpoint.
7ML19985JB02
a. First go to
desired volume units.
b. The default for level values is percent: if you want to select units
instead, go to
desired unit.
c. Go to
option
d. Go to
e. In , enter a level value for breakpoint 1.
f. In , enter the corresponding volume value for breakpoint 1.
g. Repeat steps and until values have been entered for all the
required breakpoints.
Level
Breakpoint
value
number
4
3
2
1
Note:
Breakpoint values are for example purposes only.
SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL
, and select
.
Level
Breakpoint
value
Number
(m)
20
1
2
9
3
5
4
0
Doc Id: VM11
Active Date: 15/12/2006
, and select the
and select the
Volume
value
(l)
0 0
5 500
9 3000
20 8000
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