7ML19985JB02 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL Page 5
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Probe LU (PROFIBUS PA)
Applications
Level, volume, or flow
SITRANS Probe LU is designed to measure levels of liquids in a variety of applications:
• storage type vessels
• simple process vessels with some surface agitation
• liquids
• slurries
• open channels
Volume
Volume parameters allow you to obtain the measurement as volume instead of level.
Flow
If you have an open channel system (a Parshall flume, v-notch weir, or other open
channel device), you can obtain flow values instead of level. By using the linearization
parameters, and entering values for Head and Flow breakpoints, you can use
SITRANS Probe LU to convert head levels into flow rates.
SITRANS Probe LU System Implementation
SITRANS Probe LU supports PROFIBUS communications protocol and SIMATIC PDM
software.
Basic PLC configuration with PROFIBUS PA
active
PLC
SITRANS
Probe LU
PROFIBUS DP
DP/PA coupler
PROFIBUS PA
PC/laptop
P
D
M
SITRANS
Probe LU
SITRANS
Probe LU
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