4210 Flow Meter
Section 4 Optional Equipment
4-23
3. Go to step 1 on the flow meter. Select PROGRAM, then
step through the units of measure with Enter until you
reach the menu for pH measurement.
4. Select NOT MEASURED. Press Enter. Then D.O. UNITS
will appear. Select either MG/L or PPM. Press Enter. Exit
the program and re-enter, going to step 3.
Note
You must select measurement of D.O. in step 1 or the D.O.
menu will not appear in step 3. If you cannot get the D.O.
menu to appear in step 3, recheck your selections in step 1.
Remember that you must select NOT MEASURED for pH in
step 1 or D.O. will not appear on the menu for the rest of the
program.
5. Select D.O. Press Enter. The following display will appear:
ALTITUDE is just off the screen. You can select D.O.
STANDARD if this calibration medium is available to you.
Do not select ABS (absolute) BAROMETRIC PRESSURE
unless you are at sea level or know how to correct for this
value. The barometric pressure provided from the Weather
Bureau is corrected for altitude. Select ALTITUDE.
Then:
6. Enter the altitude for your location. This is critical to the
probe's accuracy. The following display will then appear:
The reading is in milligrams of oxygen per liter. If you
chose PPM in program step 1 for D.O. units, the reading
would be in parts per million.
PARAMETER TO ADJUST
NONE LEVEL D.O.
D.O. CALIBRATION
D.O STANDARD, ABS BAROMETRIC PRESSURE,
ALTITUDE UNITS OF MEASURE
FT, M
ENTER ALTITUDE
ALTITUDE = XXXXX FEET (or meters)
WRAP D.O. PROBE IN MOIST CLOTH
PRESS ENTER WHEN STABLE: X.XXX MG/L
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