Sitrans Probe Lu (Ultrasonic); Applications; Level, Volume Or Flow - Siemens SITRANS Probe LU Operating Instructions Manual

SITRANS Probe LU (Ultrasonic)

SITRANS Probe LU is a 2-wire loop-powered ultrasonic transmitter for level, volume, and
flow monitoring of liquids in storage vessels and simple process vessels, as well as in
open channels.
The transducer is available as ETFE (ethylene-tetrafluoroethylene) or PVDF
(polyvinylidene fluoride) to suit the chemical conditions of your application. For
applications with varying material and process temperatures, the Probe LU incorporates
an internal temperature sensor to compensate for temperature changes.
SITRANS Probe LU uses field-proven Sonic Intelligence ® signal processing.

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
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.
P P age 4 SITRANS Probe LU (HART) – OPERATING INSTRUCTIONS A5E32337695