APG DCR-1004 user manual - Manual (Page 35)

Rev. A3, 10/08 DCR-1003 and DCR-1004
35
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Example 9: Flume
A 1 meter wide cutthroat flume has been installed on the outlet of a water
treatment plant. Flow is to be displayed in liters/sec. (LPS).
The associated flow equation for the 1 meter flume is:
Flow in LPS = 11.48 * H^1.56
where H is the upstream head measurement as specified
for this flume type.
To program the DCR-1003, 1004 for this application, the following modes
must be set:
MODE VALUE DESCRIPTION
Operation
1 3 Set units to meters because the output is to be displayed in liters
per second.
3 4 Select Open Channel Monitoring for application
5 0.60 m Do not set closer than the minimum blanking distance
recommended for the DST sensor type being used
Open Channel Flow
38 11 Constant ‘K’ above the decimal point
39 4800 Constant ‘K’ below the decimal point
40 .0 Decimal to one place
41 SPAN Distance from .5 in. behind the transducer face to the bottom of
the flume using a tape measure
42 1 Exponent ‘X’ above the decimal point
43 5600 Exponent ‘X’ below the decimal point
.6 METERS
SPAN
REQUIRED BLANKING DIST.