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12.6 Venturi flume
This is an example of a Venturi Flume application. The transducer is
mounted 3.94 ft / 1.20 m above the zero of the flume, this is the Empty
Distance. The Span is 1.97 ft / 0.60 m and the Blanking Distance is 1.97
ft / 0.60 m. The transducer must be fitted 3 x maximum head upstream.
There is an external counter connected to the relay counter. The water
flow must not dam up and cause a build-up inside the flume.
Please Note! The Empty Distance is to the zero of the flume and not the
bottom of the flume.
SECURITY CODE
MODE
EMPTY DISTANCE
SPAN
BLANKING
RATE OF CHANGE
FAIL TIMER
FAIL SAFE
FLOW UNITS
MAXIMUM FLOW
FLOW CURVE
SETUP RELAYS
RELAY 1
RELAY 1 COUNTER
VALUE
RELAY 2
RELAY 2 SET
RELAY 2 RESET
TOTALISER RESET
ZERO OFFSET
12.7
V-Notch
This is an example of a V-Notch application. The transducer is mounted 6.56 ft / 2.00 m above the Notch in the V, this is
the Empty Distance. The Span is 4.92 ft / 1.50 m and the Blanking Distance is 1.64 ft / 0.50 m. The transducer must be
fitted 3 x maximum head-height upstream. There is an external counter connected to the relay counter. The water flow
must not dam up and cause a build-up behind the weir.
Please Note! The Empty Distance is to the bottom of the V-Notch and not the bottom of the weir.
24 KSONIK MICRO Ultrasonic Level Transmitter | Operation instruction manual
5159
FLOW
3.94 ft / 1.20 m
1.97 ft / 0.60 m
1.97 f / 0.60 m
3.28 ft/min / 1.00 m/min
300
HOLD
Lt/sec
1435
Venturi
YES
Counter
1000
HI
1.64 ft / 0.50 m
1.61 ft / 0.49 m
NO
0
Below is what KSONIK
MICRO will display on
the above application.
The relay will drive the
counter for every 1000
Lt/s and 1m³ of flow.
TIP: Set the relay set
and reset point further
apart to avoid the relays
from chattering. The analogue output should be approximate-
ly 14.39 mA. Relay 2 would set at above 1.64 ft / 0.50 m and
reset at below 1.61 ft / 0.49 m.
3 X H
3.94 ft / 1.20 m
Flow
K 10
Flow:
932.17Lt/s
T:
00001513408 Lt
Head:
1.48ft.
mA Output:
14.39 mA
Instant:
2.46 ft.
Temperature:
20°C
Percentage:
64.95%
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