Siemens Sitrans LR250, Руководство по эксплуатации, Страница: 21 / 306

SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
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Description
3
3.1 SITRANS LR250 overview
WARNING
Loss of protection
Danger to personnel, system and environment can result from improper use of the device.
•
SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise
protection provided by the device may be impaired.
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 meters (66 feet). It is ideal for small vessels, material such as chemicals, food, beverages,
solvents (including those of corrosive or aggressive nature), and low dielectric media.
The device consists of an electronic circuit coupled to an antenna and either a threaded or
flange type process connection.
This device 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.