Teledyne 4250 Installation And Operation Manual page 63

To get out of this situation, you would have to exit and then go
back to the menu where you defined the data points as
level-to-flow rate data points. When you reach that menu you
would select CLEAR to erase the set in the flow meter's memory.
Then you could redefine the data set as a level-to-area set. After
you select ONE and press Enter, the following display will
appear: (if you have not previously entered any data points to the
set.):
LEVEL UNITS FOR DATA POINT ENTRY
• FT • • IN • • M • • MM •
Select one. Press Enter. The next display requests selection of
units of measure for flow rate:
FLOW RATE UNITS
• GPM • • GPS • • MGD • • CFS • • CFM • • M3S • • M3H • • M3D •
If you press the right arrow key several times, the following units
will appear on the display:
FLOW RATE UNITS
• LPS • • CFD • • GPH • • AFD • • CFH • • CFM • • M3M •
Make your selection. Then:
SET 1: 0 POINTS ENTERED
• ADD POINT • • (UNITS... ) •
(...if the set is empty.)
Only ADD POINT and UNITS will appear if you have not
entered any points into a data set. Once you have defined UNITS
and added some points, the UNITS option will disappear from
the screen. (You cannot change the units of measure after you
have begun a set).
SET 1 DATA POINT 1 'EXIT' TO QUIT
ENTER: 0.00 FT 0.000 FT2
(Other units of measure may appear, depending on what you
chose previously)
Enter values appropriate for what you have measured. When you
have entered all the points for a data set, press Exit. The fol-
lowing will appear:
SET 1: X POINTS ENTERED
• (USE) • • EDIT POINT • • CLEAR • • PRINT • • SAVE •
(USE will not appear until you have entered at least four
points.)
(USE), EDIT POINT, CLEAR, PRINT, and SAVE all let you
manipulate the data points you have entered. USE tells the flow
meter to generate a flow profile based on the data set you have
entered. You need at least four data points in one set for the flow
meter to calculate a valid flow profile for the stream.
EDIT POINT allows you to change the value of a data point you
have already entered.
4250 Flow Meter
Section 2 Programming
2-35