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SITRANS LR200 with mA/HART
Operating Instructions, 05/2019, A5E32337676-AE
177
Example after Auto False Echo Suppression
Auto False Echo Suppression
Range set to 2 m
①
Learned TVT
④
Default TVT
②
False echo
⑤
Material echo
③
Auto False Echo Suppression Range
⑥
Echo marker
B.2.7
Measurement Range
Near range
Near Range programs SITRANS LR200 to ignore the zone in front of the antenna. The
default blanking distance is 50 mm (1.97") from the end of the antenna.
Near Range allows you to increase the blanking value from its factory default. But Auto False
Echo Suppression is generally recommended in preference to extending the blanking
distance from factory values.
Far range
Far Range can be used in applications where the base of the vessel is conical or parabolic.
A reliable echo may be available below the vessel empty distance, due to an indirect
reflection path.
Increasing Far Range to 30% or 40% can provide stable empty vessel readings.
B.2.8
Measurement Response
Note
Units are defined in Units (2.2.1.) and are in meters by default.
Response Rate (2.4.1.) limits the maximum rate at which the display and output respond to
changes in the measurement. There are three preset options: slow, medium, and fast.