86
Reference Manual
00809-0100-4530, Rev DD
May 2016
To set the alarm limits, do the following:
3.
Identify maximum product level rate for the application.
4.
Note configured Damping Value.
In RRM, select
Setup
>
Advanced
, and click the
Echo Tracking
tab.
5.
Calculate where to position the high alarm limit in your host system.
a.
Determine desired high alarm limit.
b. Subtract safety margin from the desired high alarm limit according to
(if Signal Quality Metrics is turned on).
6.
Calculate where to position the low alarm limit in your host system.
a.
Determine desired low alarm limit.
b. Add safety margin to the desired low alarm limit according to
or
(if Signal Quality Metrics is turned on).
Table 5-2. Safety Margin in Inches and Millimeters
Table 5-3. Safety Margin in Inches and Millimeters with Signal Quality Metrics Turned on
Level Rate
in/min (mm/min)
Damping Value
2 s (default)
10 s
20 s
50 s
Level Rate > 6.40 (160)
0.25 × Level Rate
0.60 × Level Rate
0.90 × Level Rate
1.90 × Level Rate
2.35 (60) < Level Rate < 6.40 (160)
0.50 × Level Rate
0.85 × Level Rate
1.15 × Level Rate
2.15 × Level Rate
1.05 (25) < Level Rate < 2.35 (60)
0.90 × Level Rate
1.25 × Level Rate
1.60 × Level Rate
2.60 × Level Rate
Level Rate < 1.05 (25)
1.75 × Level Rate
2.10 × Level Rate
2.40 × Level Rate
3.40 × Level Rate
Level Rate
in/min (mm/min)
Damping Value
2 s (default)
10 s
20 s
50 s
Level Rate > 6.40 (160)
0.40 × Level Rate
0.65 × Level Rate
1.00 × Level Rate
2.00 × Level Rate
2.35 (60) < Level Rate < 6.40 (160)
0.85 × Level Rate
1.10 × Level Rate
1.45 × Level Rate
2.45 × Level Rate
1.05 (25) < Level Rate < 2.35 (60)
1.55 × Level Rate
1.85 × Level Rate
2.15 × Level Rate
3.15 × Level Rate
Level Rate < 1.05 (25)
3.05 × Level Rate
3.30 × Level Rate
3.65 × Level Rate
4.65 × Level Rate
