Teledyne 4250, Installation And Operation Manual, Page: 30 / 204

4250 Flow Meter
Section 2 Programming
2-2
condition means that the flow meter will enable the sampler only
when a certain condition or set of conditions, sensed by the flow
meter, are met.)
Following is a typical programming display on the flow meter.
One of the items in the second line will be flashing. The item
flashing is the selection currently held in memory.
Following is a typical display providing instructional infor-
mation:
If you stop programming for more than two minutes, the flow
meter will time out, and whatever is on the display (message or
program step) will revert to the “normal” display, shown previ-
ously.
The program consists of steps and substeps. The steps are listed
on the flow meter front panel. Most steps contain several sub-
steps. Generally, you need to complete all the substeps before
stopping, or the flow meter will reject the changes you made for
that step after it times out. There are some exceptions.
The flow meter keeps in memory any changes that you made for
the finished steps (all substeps completed before stopping). Most
steps not finished when you stop will return to the previous
selection.
2.1.2 Keypad Functions Programming is done on the flow meter’s keypad with prompts
from the display. The following sections describe the function of
each key.
OFF and ON - These two keys turn the flow meter off and on.
Go To Program Step - Pressing this key lets you go directly to a
particular program step without passing through all the steps of
the entire program. The display will ask you to enter the number
of the step you want to program. Enter the number by pressing
one of the number keys. There are nine program steps, so
numbers from one to nine are valid.
Exit Program - Press this key when you want to leave the pro-
gramming mode and return to the normal operating mode.
Clear Entry - This key lets you return to the previous entry for
a program step if you have changed the entry, but not yet pressed
Enter.
Enter/Program Step - This key has two functions. One is to
enter a program selection into the flow meter’s memory (Enter).
The other is to step through the program (Program Step).
Total Flow Current Level Date (or pH/D.O.)
Flow Rate Time (temperature)
TOTALIZED VOLUME UNITS
• CF • • GAL • • M3 • • AF • • L • • MGAL •
CHANGES HAVE BEEN MADE IN STEP
PRESS '0' TO CONTINUE, PRESS '1' TO DISCARD