4230 Flow Meter
Section 2 Programming
2-27
NOT MEASURED will also appear if you keep moving with the
right arrow key. This step establishes the units of measure the
flow meter will use in all subsequent displays and calculations.
GPS = gallons per second; GPM = gallons per minute; GPH =
gallons per hour; MGD = millions of gallons per day; CFS = cubic
feet per second; CFM = cubic feet per minute; CFH = cubic feet
per hour; CFD = cubic feet per day; LPS = liters per second; M3S
= cubic meters per second; M3M = cubic meters per minute; M3H
= cubic meters per hour; M3D = cubic meters per day; AFD =
acre-feet per day.
This step determines the units value the flow meter will use to
record the totalized flow volume that passes by. GAL = gallons;
MGAL = millions of gallons; CF = cubic feet; L = liters; M3 =
cubic meters; AF = acre-feet.
For the next several substeps you must have the appropriate
sensor attached to the flow meter's Parameter Port or Rain
Gauge Port (for the Rain Gauge or YSI 600 Sonde) to take
advantage of the capabilities. You can only have D.O./temper-
ature, pH/temperature or temperature alone on a given flow
meter, unless you use the YSI 600 Sonde. The YSI 600 Sonde pro-
vides multiple outputs simultaneously. You can use the Rain
Gauge with the YSI 600 sonde if you use a Y-connect cable.
Remember that programming for either pH or D.O. will prevent
the display of any references to the other in later program steps.
All sensors but the rain gauge must be fully submerged in the
flow stream. The pH and D.O. probes must be kept constantly
wet or they can be damaged.
Note
The pH or D.O. probes cannot attach directly to the flow meter,
as their output signals are low. You must also install the appro-
priate amplifier box between the probes and the flow meter.
Their use in streams with intermittent flow (such as storm
drainage) is not recommended. See Section 4 (Accessories) for
more information about the pH, D.O. probes, and rain gauge. The
pH probe is a consumable item, and will eventually need
replacement.
You must have an Isco 674 Rain Gauge connected to the flow
meter through the Rain Gauge Port to sense rainfall. MM = milli-
meters. The rain gauge is factory-calibrated. If you do not want
to use a rain gauge, you would select NOT MEASURED for this
step.
TOTALIZED VOLUME UNITS
• GAL • • MGAL • • CF • • L • • M3 • • AF •
RAIN GAUGE
• INCHES • • MM • • NOT MEASURED •
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