Teledyne 4250 Installation And Operation Manual page 81

If you press the right arrow key several times, the following
times will appear:
RAINFALL TIME PERIOD
• 6 HR • • 8 HR • • 12 HR • • 24 HR • • 48 HR • • 72 HR •
The intervals above are the periods of time over which the
rainfall occurs. The amount of rain entered in the previous step
and detected by the rain gauge must fall during the time interval
chosen from this menu before the flow meter recognizes the event
as a storm. The next menu defines the interval that must pass
between storm events.
TIME SINCE LAST RAINFALL
DAYS: X (allowable entry of 1-7)
If you select CONDITION from SAMPLER ENABLE, the fol-
lowing will appear:
CONDITION
• (LEVEL) • • (FLOW RATE) • • (VELOCITY) • • (D.O.) ••(pH)•
(TEMPERATURE), (RAINFALL), (YSI pH), (YSI DO), (YSI
CONDUCTIVITY) and (YSI TEMP) may also appear.
The above conditions are all shown in parentheses, because they
may not be available to you by the time you reach this menu. The
menus that do appear will depend on programming selections
made earlier in the program. At least one of the conditions will
be available to you. Operation of the conditions is the same as for
step 5 Sampler Pacing. If you select LEVEL from CONDITION
the following will appear:
LEVEL
• GREATER THAN • • LESS THAN • • RATE OF CHANGE •
After you select one of these options, the flow meter will request
that you enter a value, for example if you selected GREATER
THAN:
LEVEL
GREATER THAN X.XX FEET (or other units of measure)
Enter a maximum value for the selected condition, which if
exceeded, will enable the sampler.
If you select LESS THAN, the flow meter will ask you to enter a
minimum value for the selected condition. If the condition falls
below that value later, the flow meter will enable the sampler.
If you select RATE OF CHANGE, the flow meter will ask you to
enter two values, one for the condition, and the other for a period
of time over which the change occurs.
4250 Flow Meter
Section 2 Programming
2-53