Parshall flume

Examples

Parshall flume

This is an example of a 12 inch Parshall Flume application. The transducer is mounted 1200mm above the base of the flume, this is the Empty Distance. The Span is 600mm and the Blanking Distance is 600mm (min is 350mm). The transducer must be fitted 3 x 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 bottom of the flume and not the bottom of the channel.

Parameter List

SECURITY CODE
SELECT
EMPTY DISTANCE
SPAN
BLANKING
RATE OF CHANGE
FAIL TIMER
FAILSAFE MODE
FLOW CURVE
FLOW UNITS
MAXIMUM FLOW
SET UP RELAYS
RELAY 1
RELAY 2
RELAY 1 COUNTER
RELAY 2 HIGH
RELAY 2 RESET
TOTALISER RESET
ZERO OFFSET
OFFSET
USE TEMP COMP
SET NEW PASSWORD
FACTORY RESET

5159
mm
1200mm
600mm
600mm
1000 mm/min
300
Hold
12 Inch Parshall
G/min
1435
Yes
Counter
High
10000
500
490
No
No
0
No
No
No

Below is what EASZ-11 will display on the above application.

FI = 600 G/min
TI 2345665

and

Head mm
TI 2345665

Now the display will toggle when the ENTER key is pressed. The relay will drive the counter for every 10000 counts.

The analogue output should be approximately 19.1 mA.