4230 Flow Meter
Section 2 Programming
2-41
If you select D.O. for parameter to adjust, the following display
will appear:
ALTITUDE is just off screen to the right. If you select D.O.
STANDARD for the calibration method, the following display
will appear:
If you select ABS (absolute) BAROMETRIC PRESSURE the fol-
lowing will appear:
Absolute barometric pressure is barometric pressure not cor-
rected to sea level. The barometric pressure published by the
U.S. Weather Bureau is corrected to sea level. If you use their
value, you must convert it to the absolute pressure for your
altitude. You should use Weather Bureau barometric pressure
only if you are at sea level, or are able to correct the Weather
Bureau figure to absolute pressure at your location. Enter the
value for atmospheric pressure.
Then the display will advance to the following:
If you select ALTITUDE for D.O., the following will appear:
Select the appropriate units and press Enter.
Enter the altitude for your location. Then:
For more detailed information on the pH and D.O. probes, see
Section 4.
DISSOLVED OXYGEN CALIBRATION
•D.O. STANDARD••ABS BAROMETRIC PRESSURE•>
D.O. STANDARD
0.00 MG/L
ABS BAROMETRIC PRESSURE
X.XX mmH
g
WRAP D.O. PROBE IN MOIST CLOTH
PRESS ENTER WHEN STABLE: X.XX MS/CM:
CALIBRATING...
PLEASE WAIT...
UNITS FOR ALTITUDE ENTRY
• FT • • M •
ALTITUDE
ALTITUDE = X.XX FT (or meters)
WRAP D.O. PROBE IN MOIST CLOTH
PRESS ENTER WHEN STABLE: X.XXX MG/L
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