Hach LDO10101, Руководство пользователя, Страница: 8 / 16

Section 5 Calibration
The procedure that follows is applicable to meters that can connect to Intellical LDO probes. Refer to
the applicable meter documentation for meter operation and probe-specific settings.
5.1 Calibration notes
Read the notes that follow before calibration.
• Measure samples as soon as possible after collection.
• Remove the shroud before calibration. Refer to
Remove or install the shroud on page 9.
• The factory calibration is sufficient for most applications. If necessary, set the probe to use a
different calibration option in the probe settings menu.
• Use the single display mode for calibration when more than one probe is connected to the meter (if
applicable).
• Calibrate the probes and verify the calibration regularly for best results. Use the meter to set
calibration reminders.
• The calibration data is stored in the probe. When a calibrated probe is connected to a different
meter with the same calibration options, a new calibration is not necessary.
• Air bubbles below the sensor when in solution can cause a slow response or error in the
calibration. Make sure to remove air bubbles during calibration.
• The meter uses the slope value shown at the end of the calibration to monitor the condition of the
sensor cap.
5.2 LDO water-saturated air (100%) calibration procedure
1. Fill a BOD bottle ¼
full with water.
2. Put a stopper on the
bottle and shake for
30 seconds.
3. Rinse the probe with
deionized water. Dry
the probe with a lint-
free cloth.
4. Put the probe in the
bottle. Wait 10 minutes
or more (30 minutes for
best results) for the
contents to adjust to
ambient temperature.
5. Go to the calibrate
menu. Select the probe,
if applicable.
6. Read the dissolved
oxygen value. The
display shows 100%
when the reading is
stable.
7. Save the calibration.
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