Hach-Lange LDO10130 User Manual
DOC022.52.80021
User Manual
Luminescent Dissolved Oxygen Probe: Model LDO10101,
LDO10103, LDO10105, LDO10110, LDO10115 or LDO10130
Safety information
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the Producer for disposal at no charge to
the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life
equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Specifications
Note: Specifications are subject to change without notice.
Specifications Details
Probe type Luminescent dissolved oxygen (LDO) probe
Dissolved oxygen range 0.1 to 20.0 mg/L (ppm) 1 to 200% saturation
Dissolved oxygen accuracy ±0.1 mg/L for 0 to 8 mg/L
±0.2 mg/L for greater than 8 mg/L
% saturation resolution 0.1%
Stabilization time T90% at 10 seconds (when stirred)
Temperature resolution 0.1 °C (0.18 °F)
Temperature accuracy ±0.3 °C (±0.54 °F)
Pressure resolution 1 hPa
Pressure accuracy ±0.8%
Operating temperature range 0 to 50 °C (32 to 122 °F)
Storage temperature range 0 to 40 °C (32 to 104 °F)
Minimum sample depth 25 mm (0.984 in.)
Dimensions (standard) Diameter: 29 mm (1.14 in.)
Length: 191 mm (7.52 in.)
Cable length: 1 or 3 m (3.28 or 9.84 ft)
Dimensions (rugged) Diameter: 46 mm (1.81 in.)
Length: 223 mm (8.73 in.)
Cable length: 5, 10, 15 or 30 meter (16.40, 32.81, 49.21 or 98.42 ft)
Cable connection M12 digital output and connector compatible with HQd meters
Product overview
The LDO101 series probe is a luminescent dissolved oxygen probe (Figure 1). The
LDO10105, LDO10110, LDO10115 or LDO10130 rugged probe is available with a 5, 10,
15 or 30 m (16.40, 32.81, 49.21 or 98.42 ft) cable. The LDO10101 or LDO10103 standard
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probe is available with a 1 or 3 m (3.28 or 9.84 ft) cable and is intended for laboratory
use. The probe measures the dissolved oxygen concentration in wastewater, drinking
water and general applications.
Note: For BOD applications, use the LBOD10101 probe which has LDO technology and a stirrer.
Figure 1 Probe overview
1 LDO probe cap 5 Pressure sensor module
2 Rugged probe (5, 10, 15 or 30 meter cable) 6 iButton® compartment
3 Standard probe (1 or 3 meter cable) 7 Pressure sensor module cap
4 Probe cable
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iButton is a registered trademark of Maxim Integrated Products, Inc.
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Preparation for use
Note: Do not touch the probe cap with a hand, fingers or any surface that can scratch the cap.
Prepare the probe for use before calibration or sample measurement.
1. Make sure that the probe cap and iButton are installed correctly. The iButton label
should be up.
2. Make sure that the probe cap and iButton have the same lot code.
3. If a rugged probe, make sure that the shroud is installed before field use (refer to
Install the shroud on page
Note: Damage to the sensing elements can occur if the shroud is not installed during field use.
Damage under these conditions is not covered by the product warranty.
4. Rinse the probe cap with deionized water. Blot dry with a lint-free cloth.
5. If dissolved oxygen monitoring periods are longer than 6 hours, condition the probe
cap for 72 hours. Calibrate the probe once every 8 hours.
Note: After 72 hours, the probe cap will reach a fully hydrated state.
9).
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Calibration
Before calibration:
The probe must have the correct service-life time stamp. Set the date and time in the meter before the probe is attached.
It is not necessary to recalibrate when moving a calibrated probe from one HQd meter to another if the additional meter is
configured to use the same calibration options.
To view the current calibration, push , select View Probe Data, then select View Current Calibration.
If any two probes are connected, push the UP or DOWN arrow to change to the single display mode in order to show the
Calibrate option.
Prepare the probe for use (refer to Preparation for use on page 2.
If a rugged probe, remove the shroud from the probe (refer to Remove the shroud on page 9).
Calibration notes:
•
% saturation or mg/L calibration methods are available in the Modify Current Settings
menu.
• The slope value is the comparison between the latest calibration and the factory
calibration shown as a percentage.
• An additional zero point calibration can be added to the calibration routine. Refer to
Change calibration options on page 8.
• The calibration is recorded in the probe and the data log. The calibration is also sent
to a PC, printer or flash memory stick if connected.
• 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 calibration error occurs, refer to Troubleshooting on page 10.
Water-saturated air (100%) calibration procedure:
1. Connect the
probe to the
meter. Make sure
that the cable
locking nut is
securely
connected to the
meter. Turn on the
meter.
2. Push
Calibrate.
3. Push
Methods. Select
User Cal - 100%.
Push OK.
4. Rinse the
probe cap with
deionized water.
Blot dry with a lintfree cloth.
5. Add
approximately ¼
inch (6.4 mm) of
reagent water to a
narrow-neck
bottle, such as a
BOD bottle.
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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 nonabrasive 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
Install the shroud
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 Calibration 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 Preparation for use on page 2).
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 Advanced operation on page 6 or do the Auto salinity
correction on page 5.
• 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 Troubleshooting on page 10.
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