4210 Flow Meter
Section 2 Programming
2-50
Here, enter the highest pH value you expect to see in your flow
stream. Selection depends on the range that you would normally
see. If your stream varies from 6 to 8 pH units, you would not
want to enter 0 and 14 as limits. The chart resolution would be
poor. You could enter 5 and 9 pH and still have good resolution if
there were sharp deviations because of the availability of
over-ranges.
Selection of OFF from the INPUT FOR PRINTER LINE menu
will cause the printer to leave this line blank. Selection of condi-
tions other than pH, D.O., TEMPERATURE, or YSI-functions
will result in a request that you enter the full-scale value for the
condition being plotted. For example, if you selected LEVEL as a
condition, the following would appear:
The flow meter will automatically go into over-range if the data
goes higher than the full-scale value you have selected. You can
easily recognize over-range operation by the plotted line running
off the right side of the chart and then immediately reappearing
on the left side of the chart. Because of the over-range feature,
you can set a full-scale value that gives you good resolution on
the chart.
At the same time, the automatic over-range will prevent the loss
of recorded data if the plotted line rises past the full-scale point.
For the other parameters, the full-scale units will be appropriate
for what is being measured (D.O., pH, temperature, etc.) the flow
meter is capable of multiple over-ranges.
(TEMPERATURE), (YSI pH), (YSI D.O.), (YSI CONDUC-
TIVITY), and (YSI TEMP) may also appear.
Again, just as for line A, you can select another parameter to plot
on the chart. The flow meter will request a full-scale value. The
full-scale value can be different than that entered for line A.
(TEMPERATURE), (D. O.), (YSI pH), (YSI D.O.), (YSI CONDUC-
TIVITY), and (YSI TEMP) may also appear.
For line C, you can select a third parameter to plot on the chart.
The flow meter will also request entry of a full-scale, or bottom
and full-scale values.
You must have an Isco 674 Rain Gauge or equivalent connected
to the flow meter to measure rainfall. Output is recorded in
either inches or millimeters. Note that there is only one
over-range for rainfall.
PRINTER LINE A FULL SCALE
X.XXXX FEET (or other units of measure, as selected)
INPUT FOR PRINTER LINE B
• (LEVEL) • • (FLOW RATE) • • (pH) • • (D. O.) • • OFF •
INPUT FOR PRINTER LINE C
•(LEVEL) • • (FLOW RATE) • • (D.O.) • • (pH) • • OFF •
PLOT RAINFALL ON CHART?
• NO • • YES •
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