Emerson Rosemount 1208A Reference Manual page 90

Configuration parameters
October 2022
B.7.3 General threshold
The general threshold is used to filter out noise and disturbing echoes from the product
surface echo. The transmitter uses certain criteria to decide which type of echo peak that
is detected. Only echoes above the general threshold might be considered the product
surface.
Figure B-9: Threshold Principle
A. General threshold
B. Product surface echo
Related information
Adjust the general threshold
90
A
B
0 150 300 450 600 750
m
3.0
2.5
2.0
1.5
1.0
0.5
0
900 mV
Rosemount 1208A Level and Flow Transmitter
Reference Manual
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