4230 Flow Meter
Section 2 Programming
2-31
T.D.S. stands for “total dissolved solids.” T.D.S. are measured in
parts per thousand (ppt).
Total dissolved solids are estimated by multiplying conductivity
by an empirical factor. This factor can vary between 0.55 and 0.9
depending on the solubility of the ionic components in the water
and its temperature.
Select the units appropriate for your application.
2.8 Step 2 - Flow
Conversion
METERING INSERTS will also appear.
WEIR/FLUME = weir or flume; EQUATION = equation;
MANNING = Manning; DATA POINTS = data points. If you
select WEIR/FLUME, the following display will appear:
For detailed information on weirs and flumes, refer to the Isco
Flow Measurement Handbook that was shipped with your flow
meter. Consulting the manufacturer of the specific weir or flume
is also worthwhile. For weirs and flumes, there is a preferred
location for installing the level measuring device. Proper
mounting of the level measurement device and accurate mea-
surement of the level in the flow stream at the calibration point
are essential for accurate flow calculation by the flow meter. If
you select WEIR, the following display will appear:
If you select V-NOTCH, the following will appear:
If you select RECTANGULAR for the type of weir, the following
will appear:
If you select YES, the following will appear:
TDS SCALE FACTOR
0.75
YSI 600 TEMPERATURE UNITS
• °F • •°C • • NOT MEASURED •
FLOW CONVERSION TYPE
• WEIR/FLUME • • EQUATION • • MANNING • • DATA POINTS •>
TYPE OF DEVICE:
• WEIR • • FLUME •
SELECT TYPE OF WEIR:
• V-NOTCH • • RECTANGULAR • • CIPOLLETTI •
SELECT V-NOTCH WEIR ANGLE (IN DEGREES)
• 22.5 • • 30 • • 45 • • 60 • • 90 • • 120 •
END CONTRACTIONS ON RECTANGULAR WEIR:
• YES • • NO •
RECTANGULAR WEIR WITH END CONTRACTIONS
ENTER CREST LENGTH XX.XXX FEET (or meters)
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