Operating Manual

Chapter 5 Radar Fine Tuning Accu-Wave
5-28 TN Technologies
• Maximum level to be measured: 24.00 ft
• False Echo Management menu:
− Successive weighting factor (SWF): 0.5 (default)
− Bottom echo signal strength factor: 0.25
− Distance REF LINE to tank bottom: 24.00 ft
• Response Time, Lost Echo and Agitator Reject menu:
− range gate weighting factor (GWF): 5
Region Weighting Setup:
Region Number Region Boundary Weighting Factor
1 REF LINE – 11.00 ft 1.5
2 11.00 – 13.00 ft 2.0
3 13.00 ft – max distance 1.1
Tank Mapping Setup:
• Set to derate mapped echoes: 0.05 derating factor
Echo Report
echo
number
distance
(ft)
sig str Comment
Combined
wtg factor
modified
sig str*
1 24.75 1000 1.1 x 0.25 275
2 22.00 200 1.1 220
3 17.00 300 1.1 330
4 12.50 100 2.0 200
5 11.50 50 within range gate 2.0 x 0.5 500
6 9.00 150 1.5 225
7 7.50 1000 mapped 1.5 x 0.05 75
8 5.00 200 mapped 1.5 x 0.05 15
*The sig str reading from the echo report is weighted by the factors in the “Combined wtg
factor” column to obtain the “modified sig str” value before applying the 0.5 successive
weighting factor to select the “best echo.” In this example, echo number 5 would be
selected as the “best” candidate echo. (See “Echo Weighting Factors” on page 5-13.)