Sitrans Probe Lu System Implementation; Programming; Sitrans Probe Lu Approvals And Certificates - Siemens sitrans PROBE LU Instruction Manual

Volume
By using the volume parameters (P050 to P055) you can 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 universal linear function
of parameter P051, and entering values for Head and Flow in the breakpoint parameters
P054 and 055, you can use SITRANS Probe LU to convert head levels into flow rates.

SITRANS Probe LU System Implementation

SITRANS Probe LU supports the HART communications protocol and SIMATIC PDM
1 2
software.
Typical PLC/mA configuration with HART
power supply
hand programmer
SITRANS
Probe LU

Programming

SITRANS Probe LU carries out its level measurement function according to the set of
built-in parameters. Parameter changes can be made via the hand programmer, via a PC
using SIMATIC PDM, or via a HART Handheld Communicator.

SITRANS Probe LU Approvals and Certificates

Note:
Please see
1.
Depending on the system design, the power supply may be separate from the PLC, or
integral to it.
2.
A 250 Ohm resistor may be required if the loop resistance is less than 250 Ohms.
7ML19985HT01
2
1
= 250 Ω
R
Approvals
on page 8 for an approvals listing.
SITRANS Probe LU – INSTRUCTION MANUAL
active PLC
HART modem
HART
communicator
Page 5