Teledyne 4250 Installation And Operation Manual page 44

4250 Flow Meter
Section 2 Programming
2-16
tative samples. However, if your stream shows continuous flow
and the sensor detects an error, you would probably select NO
(use previous reading).
If you select DO/PH READING INTERVAL, the following will
appear:
DO/PH READING INTERVAL
• CONTINUOUS • • 15 SEC • • 30 SEC • • 1 MIN • • 2 MIN • • 5 MIN •
Again, this selection is offered as a means of saving battery
power. After selecting the appropriate parameter reading
interval, press Enter. The Setup menu will reappear. This time,
select YSI 600 READING INTERVAL from the menu. The fol-
lowing display will appear:
YSI 600 READING INTERVAL
•CONTINUOUS••15 SEC••30 SEC••1 MIN••2 MIN••5 MIN•
After selecting the appropriate parameter reading interval, press
Enter. The Setup menu will reappear. This time, select STATUS
from the Setup menu. Press Enter. The following will appear:
MODEL 4250 HW REV: XXXXXX SW REV X.XX
ID XXXXXXXXXXX
HW REV refers to the hardware revision number.
SW REV refers to the software revision number.
ID is an identification number for the flow meter.
If you press Enter again, you will see the following display:
SIGNAL STRENGTH X%
SPECTRUM STRENGTH X%
This value indicates the functioning of the area-velocity sensor. (The
flow meter goes into the continuous reading mode whenever this
screen is displayed.) This display exists primarily as a diagnostic
tool for telephone troubleshooting. There is no "magic" number you
should expect to see. If the flow meter is displaying valid level/flow
readings, you do not need to worry much about the numbers. The
numbers become important when you cannot get valid level/flow
readings. You can apply the following explanations to the values
displayed.
Signal Spectrum
Strength Strength
0% 0%
0% ERR
ERR ERR
Explanation
Unit is approximating velocity.
(Appears when level is below
minimum velocity depth.)
Not enough reflective particles.
Not working—call factory.