Sample measurement – Hach-Lange LDO10130 User Manual
Page 4
6. Put a stopper
in the bottle and
shake the bottle
vigorously for
approximately
30 seconds to
saturate the
entrapped air with
water. Allow up to
30 minutes for
contents to
equilibrate to room
temperature.
7. Remove the
stopper. Carefully
dry the probe cap
with a non-
abrasive cloth. Put
the probe in the
bottle.
8. Push Read.
The display shows
"Stabilizing" and a
progress bar as
the probe
stabilizes. The
display shows the
standard value
when the reading
is stable.
9. Push Done to
view the
calibration
summary.
10. Push Store to
accept the
calibration and
return to the
measurement
mode. If a rugged
probe, install the
shroud on the
probe (refer to
on page 9).
Sample measurement
Before measurement:
The probe must have the correct service-life time stamp. Set the date and time in the meter before the probe is attached.
If complete traceability is necessary, enter a sample ID and operator ID before measurement. Refer to the HQd meter
manual for more information.
Regular calibration is required for the best measurement accuracy (refer to
on page 3). Calibrate the probe if
accuracy better than ±0.50 mg/L is necessary for the application.
Prepare the probe for use (refer to
To deploy a rugged probe at a distance, toss the probe body with a gentle underhand throw. Do not swing the probe by the
cable as this may cause injury to the user, will cause severe strain on the cable and will shorten the service life of the cell.
Damage under these conditions is not covered by the product warranty.
Do not submerge the pressure sensor module.
Measurement notes:
•
Stabilization times with smaller concentration changes generally will be longer and
can be minimized by correct stirring and conditioning. Experiment to determine the
correct stir rate if necessary.
•
Salinity affects the concentration of dissolved oxygen in the sample. To correct for
salinity effects, refer to
on page 6 or do the
•
Data is automatically stored in the data log when Press to Read or Interval is
selected in the Measurement Mode. When Continuous is selected, data will only be
stored when Store is selected.
•
Air bubbles under the sensor tip when submerged can cause slow response or error
in measurement. If bubbles are present, gently shake the probe until bubbles are
removed.
•
If a measurement error occurs, refer to
on page 10.
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