4230 Flow Meter
Section 2 Programming
2-35
(Slope and roughness are entered as for ROUND PIPE previ-
ously.) Then:
Then:
Returning to step 2, FLOW CONVERSION TYPE, if you select
DATA POINTS, the following displays will appear:
Then:
This allows you to enter data points that are in different units
than you are using. Then:
If you press the right arrow key a few times, the following units
of measure will appear on the display:
GPM = gallons per minute; GPS = gallons per second, MGD =
million gallons per day, CFS = cubic feet per second; CFM = cubic
feet per minute, M3S = cubic meters per second; M3M = cubic
meters per minute; M3H = cubic meters per hour; M3D = cubic
meters per day; LPS = liters per second; CFD = cubic feet per
day; GPH = gallons per hour; AFD = acre-feet per day; CFH =
cubic feet per hour.
DATA POINT flow conversion allows you to enter measured level
and flow rate values for a number of different points. The 4230
can accept as many as four sets of data points with each set con-
taining up to fifty points.
The flow meter then performs a three-point interpolation to cal-
culate a flow rate appropriate for the data entered. The common
use of data point flow conversion is with unusual primary mea-
suring devices, specifically devices that the 4230 does not
support in its internal flow conversion set.
The level- to-flow rate data for such devices is usually available
from the manufacturer. From this the flow meter can create a
conversion based on the relationship between the level and flow
rate.
MANNING TRAPEZOID
TOP WIDTH = X.XXX FEET (or meters)
MANNING TRAPEZOID
BOTTOM WIDTH = X.XXX FEET (or meters)
SELECT DATA SET
• ONE • • TWO • • THREE • • FOUR • • (NONE) •
LEVEL UNITS FOR DATA POINT ENTRY
• FT • • IN • • M • • MM •
FLOW RATE UNITS
• GPM • • GPS • • MGD • • CFS • • CFM • • M3S • • M3H • • M3D •
FLOW RATE UNITS
• LPS • • CFD • • GPH • • AFD • • CFH • • CFM • • M3M •
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