300-R010-45G Datasheet, PDF (21/36 Pages) Magnetrol International, Inc. – Echotel® Model 300/301 Ultrasonic Non-Contact Transmitter For Level/Volume/Open Channel Flow

SOFTWARE CONFIGURATION cont.
SYSTEM CONFIGURATION MENU—FLOW AND LEVEL cont.
Concentrate points as follows:
A. At least two points at beginning (P1 and P2);
B. At least two points at end (P9 and P10);
C. Three points at approximate average flow rate (for
example, P3, P4, P5); and at transition point (P7)
and points on either side (P6, P8).
Transition
P10
point
P9
P5
Concentrate points along curve
P4
P3
P2
P1
SPLINE OR LINEAR
Figure 13
Custom Table Flow and Level
P7
P8
P6
P5
P4 _{Average flow rate}
P3
P2
P1
SPLINE
Dead band
18" (457)
minimum
Maximum head/
maximum flow
Ultrasonic
Transducer
Water surface
Flow
Throat
Figure 14
Flume (side view)
Ultrasonic
Transducer
Drawdown
Maximum head, H
Crest
Maximum
crest height,
2–3 H
3–4 H
minimum
Channel floor
Figure 15
Weir (side view)
NOTE: Install the transducer at the point recommended by
the flume/weir manufacturer to insure proper flow measure-
ment; or consult factory for transducer location.
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