Page 4 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL 7ML19985JF02
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SITRANS LR250
SITRANS LR250 Overview
SITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring
of liquids and slurries in storage vessels including high pressure and high temperature, to
a range of 20 m (66 ft). It is ideal for small vessels and low dielectric media.
The instrument consists of an electronic component coupled to a horn antenna and either
a threaded or flange type process connection.
SITRANS LR250 supports PROFIBUS PA communication protocol, and SIMATIC PDM
software. Signals are processed using Process Intelligence which has been field-proven
in over 1,000,000 applications worldwide (ultrasonic and radar). This device supports
acyclic communications from both a PROFIBUS Class I and Class II master.
Programming
SITRANS LR250 is very easy to install and configure via a graphical local user interface
(LUI). You can modify the built in parameters either locally via the Siemens infrared hand-
held programmer, or from a remote location via SIMATIC PDM.
Applications
• liquids and slurries
• bulk storage vessels
• simple process vessels
Approvals and Certificates
SITRANS LR250 is available with General Purpose approval, or for hazardous areas. For
details see
Approvals
on page 7.
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