Transcription

DOC022.53.80021LDO10105/2022, Edition 5User Manual

Table of ContentsSection 1 Product overview . 3Section 2 Specifications . 3Section 3 Safety information . 43.13.23.33.4Intended use . 4Use of hazard information . 4Precautionary labels . 5Product hazards . 5Section 4 Preparation for use . 5Section 5 Calibration . 65.1 Calibration notes . 65.2 LDO water-saturated air (100%) calibration procedure . 6Section 6 Sample measurement . 76.1 Sample measurement notes . 76.2 Sample measurement procedure . 7Section 7 Maintenance . 77.17.27.37.4Clean the probe . 7Replace the sensor cap and iButton . 9Remove or install the shroud . 9Storage . 11Section 8 Troubleshooting . 12Section 9 Consumables . 121

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Section 1 Product overviewThe Intellical LDO101 series probes are digital, luminescent dissolved oxygen probes that measurethe dissolved oxygen concentration in wastewater, drinking water and general water samples. Theprobes have temperature and absolute air pressure sensors for accurate dissolved oxygenmeasurements. The standard probes are for laboratory use. The rugged probes are for field use.Refer to Figure 1.Note: For BOD applications, use the LBOD10101 probe, which has the LDO technology and a stirrer formeasurements in a BOD bottle.Figure 1 Probe overview1 LDO sensor cap5 Pressure sensor module2 Rugged probe6 iButton3 Standard probe7 iButton compartment4 Cable8 Pressure sensor module cap 1,2Section 2 SpecificationsSpecifications are subject to change without notice.SpecificationsDetailsProbe typeLuminescent dissolved oxygen (LDO) probeDissolved oxygen range0.1 to 20.0 mg/L (ppm); 1 to 200% saturation12iButton is a registered trademark of Maxim Integrated Products, Inc.An iButton is no longer supplied with the probe. It is not necessary for new probes to have aniButton, because the calibration data is installed on the probe at the factory.English 3

SpecificationsDetailsDissolved oxygen accuracy 0.1 mg/L for concentrations less than 8 mg/L 0.2 mg/L for concentrations more than 8 mg/L% saturation resolution0.1%Stabilization timeT90% at 10 seconds (when the solution is stirred)Temperature resolution0.1 C (0.18 F)Temperature accuracy 0.3 C ( 0.54 F)Pressure resolution1 mbar (1 hPa)Pressure accuracy 0.8%Operating temperature0 to 50 C (32 to 122 F)Storage temperature0 to 40 C (32 to 104 F)Minimum immersion depth25 mm (0.98 in.)Dimensions (standard)Diameter: 29 mm (1.14 in.)Length: 191 mm (7.52 in.)Cable length: LDO10101: 1 m (3.28 ft); LDO10103: 3 m (9.84 ft)Dimensions (rugged)Diameter: 46 mm (1.8 in.)Length: 223 mm (8.7 in.)Cable length: LDO10105: 5 m (16.4 ft); LDO10110: 10 m (32.8 ft); LDO10115: 15 m(49.2 ft); LDO10130: 30 m (98.4 ft)Cable connectionM12 digital output and connectorWarranty3 years on the probe, 1 year on the sensor cap. This warranty covers manufacturingdefects, but not improper use or wear.CertificationsCE, FCC/ISEDSection 3 Safety information3.1 Intended useThe Intellical probes are intended for use by individuals who measure water quality parameters in thelaboratory or in the field. The Intellical probes do not treat or alter water.3.2 Use of hazard informationDANGERIndicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.WARNINGIndicates a potentially or imminently hazardous situation which, if not avoided, could result in death or seriousinjury.CAUTIONIndicates a potentially hazardous situation that may result in minor or moderate injury.NOTICEIndicates a situation which, if not avoided, may cause damage to the instrument. Information that requires specialemphasis.4 English

3.3 Precautionary labelsRead all labels and tags attached to the instrument. Personal injury or damage to the instrumentcould occur if not observed. A symbol on the instrument is referenced in the manual with aprecautionary statement.Electrical equipment marked with this symbol may not be disposed of in European domestic or publicdisposal systems. Return old or end-of-life equipment to the manufacturer for disposal at no charge tothe user.3.4 Product hazardsCAUTIONChemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protectiveequipment appropriate to the chemicals that are handled. Refer to the current safety data sheets(MSDS/SDS) for safety protocols.CAUTIONChemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional andnational regulations.Section 4 Preparation for usePrepare the probe for calibration and measurement as follows. Do not touch the protective blacklayer on the LDO sensor cap.1. Remove the shroud. Refer to Remove or install the shroud on page 9.2. Install the LDO sensor cap and tighten by hand. Do not tighten more than is necessary for a goodseal.3. Soak the probe in 100 mL of tap water for 30 minutes before use. For probes that will be inaqueous solutions for more than 6 hours continuously, soak the probe for 72 hours.Note: After 72 hours, the LDO sensor cap is fully hydrated.4. Make sure that the meter has the correct date and time settings. The service-life time stamp inthe probe comes from the date and time settings in the meter.Note: Some meters automatically open the date and time settings when the meter starts for the first time, orafter battery replacement.5. Connect the probe to the meter.6. Install the shroud. Refer to Remove or install the shroud on page 9.Note: Make sure to install the shroud during field use to prevent damage to the sensing elements. The productwarranty does not include such damage.English 5

Section 5 CalibrationThe procedure that follows is applicable to meters that can connect to Intellical LDO probes. Refer tothe applicable meter documentation for meter operation and probe-specific settings.5.1 Calibration notesRead 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 adifferent calibration option in the probe settings menu. Use the single display mode for calibration when more than one probe is connected to the meter (ifapplicable). Calibrate the probes and verify the calibration regularly for best results. Use the meter to setcalibration reminders. The calibration data is stored in the probe. When a calibrated probe is connected to a differentmeter 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 thecalibration. 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 thesensor cap.5.2 LDO water-saturated air (100%) calibration procedure1. Fill a BOD bottle ¼full with water.2. Put a stopper on thebottle and shake for30 seconds.3. Rinse the probe withdeionized water. Drythe probe with a lintfree cloth.5. Go to the calibratemenu. Select the probe,if applicable.6. Read the dissolvedoxygen value. Thedisplay shows 100%when the reading isstable.7. Save the calibration.6 English4. Put the probe in thebottle. Wait 10 minutesor more (30 minutes forbest results) for thecontents to adjust toambient temperature.

Section 6 Sample measurementThe procedure that follows is applicable to meters that can connect to Intellical LDO probes. Refer tothe applicable meter documentation for meter operation and probe-specific settings.6.1 Sample measurement notesRead the notes that follow before sample measurements. Do not submerge the pressure sensor module. Salinity changes the solubility of oxygen in water. Measure the sample salinity and enter the valuein the probe settings of the meter. To decrease the measurement time, condition the probe and try different stir rates. Rinse the probe with deionized water and dry with a lint-free cloth between measurements toprevent contamination. If complete traceability is necessary, enter a sample ID and operator ID before measurement.Refer to the meter manual for instructions. The meter automatically saves the measurement data when the user manually reads each datapoint and when the meter is set to read at regular intervals. The user must manually save eachdata point when the meter is set to read continuously. Air bubbles below the sensor can cause a slow response or error in the measurement. Make sureto remove air bubbles before and during measurements. Make sure to install the shroud before field use to prevent damage to the sensing elements. Referto Remove or install the shroud on page 9. The probe warranty does not include such damage. To deploy a rugged probe at a distance, toss the probe body with a slow underhand throw. Do notthrow the probe by the cable to prevent damage to cable, the probe or the user.6.2 Sample measurement procedure1. Rinse the probe withdeionized water. Drythe probe with a lintfree cloth.Rugged probes: installthe shroud.2. Put the probe in thesample 25 mm (1 inch)or more. Do not put theprobe on the bottom orsides of the container.Stir the sample at amoderate rate or putthe probe in flowingconditions.3. Shake the probefrom side to side toremove air bubbles.Rugged probes: movethe probe up and downto remove air bubbles.4. Stir gently, then readthe dissolved oxygenvalue of the sample.The display shows thedissolved oxygen valuewhen the reading isstable.Section 7 Maintenance7.1 Clean the probeNOTICEThe LDO sensor cap has a protective black layer to increase the life of the LDO sensor. Do not rub the black layerto clean the LDO sensor cap. Do not use alcohol or other organic solvents to clean the LDO sensor cap.Keep the LDO sensor cap clean for best results. Use only water and neutral detergents to clean theprobe.English 7

1. Remove the shroud. Refer to Remove or install the shroud on page 9.2. If water is seen between the LDO sensor cap and lens:a. Remove the LDO sensor cap.b. Blot dry the LDO sensor cap and lens with a soft dry cloth. Refer to Figure 2.If the probe lens is dirty, rinse the lens with dilute isopropyl alcohol (10% or less) or deionizedwater. Blot dry with a non-abrasive cloth. Do not rub the lens or use abrasive cleaners.c. Install the LDO sensor cap and tighten by hand. Do not tighten more than is necessary for agood seal.3. Put the probe in a neutral cleaning solution and stir the solution. Do not rub or remove the blacklayer on the LDO sensor cap.Note: If disinfection is necessary, put the probe in a dilute alcohol solution for a maximum of 2 minutes andrinse immediately with deionized water. Do not use an alcohol solution more than two times a day.4. Rinse the probe with deionized water. Blot dry with a lint-free cloth.5. Install the shroud. Refer to Remove or install the shroud on page 9.8 English

Figure 2 Probe exploded view1 Shroud7 Probe lens2 Locking ridges (8x)8 Cap seal3 Locking rib9 Temperature sensor4 Locking ring10 Locking groove5 LDO sensor cap11 Locking ribs (4x)6 O-ring7.2 Replace the sensor cap and iButtonReplace the LDO sensor cap after 365 days, or more frequently if the cap becomes damaged ordirty. The LDO sensor cap and iButton operate together and must be replaced at the same time.Refer to the instructions that are supplied with the LDO sensor cap replacement kit.7.3 Remove or install the shroudRemove the shroud during calibration and maintenance. Refer to Figure 3. Keep the shroud installedon the probes during sample measurements to prevent damage to the LDO sensor cap. Refer toFigure 4.English 9

Figure 3 Remove the shroud10 English

Figure 4 Install the shroud7.4 StorageThe storage conditions for the LDO probe can be dry, wet, or humid. Wet storage conditions help tokeep the LDO sensor cap fully hydrated.Note: After 72 hours of storage in tap water, the LDO sensor cap is fully hydrated.For daily measurements in the laboratory, keep the probe in a humid environment such as a BODbottle filled approximately ¼ full with tap water. If the probe is used to monitor DO concentrationscontinuously for more than 6 hours, keep the probe in tap water.When the probe is used for short periods (less than 6 hours), the storage can be dry. Before drystorage, rinse the probe in deionized water and blot dry. Soak the probe in tap water for 30 minutesbefore use.English 11

Section 8 TroubleshootingProblemPossible causeSolutionDecreased probe performancecauses slow stabilization andprevents accurate calibrations ormeasurements.The sensor cap is loose ordamaged.Tighten or replace the sensor cap. Alwaysreplace the sensor cap and the iButton atthe same time. Refer to Replace thesensor cap and iButton on page 9.Water is between the sensorcap and the probe lens.Remove the sensor cap and dry the probelens. Refer to Clean the probe on page 7.The sensor cap is notsufficiently conditioned.Keep the probe in the BOD bottle withsome water for more time, then try thecalibration again.The temperature or pressuresensor does not operatecorrectly.Compare the temperature and pressurereadings of the probe with externalmeasurements. The pressure sensorreads absolute pressure, which is notadjusted to sea level. If the measurementsare not correct, contact technical support.The lot code on the iButton isnot the same as the lot codeon the sensor cap.Replace the sensor cap and iButton.Sample properties cause slowstabilization or inaccuratemeasurements.The measurement was notadjusted for salinity in thesample.Measure the salinity of the sample andenter the value as a salinity correctionfactor in the meter.Procedure problem causes slowstabilization and prevents accuratecalibrations or measurements.Air bubbles are around orbelow the probe tip.Carefully tap or shake the probe to removeair bubbles.The LDO sensor cap is indirect sunlight.Install the protective shroud.The calibration mode in themeter is set to factory.If user calibration is necessary, change thecalibration mode in the meter.Section 9 ConsumablesNote: Product and Article numbers may vary for some selling regions. Contact the appropriate distributor or refer tothe company website for contact information.DescriptionQuantityItem no.LDO sensor cap replacement kit (includes iButton)15811200BOD bottle with glass stopper, 300 mL162100Beaker, 250 mL, polypropylene1108046Probe stand for standard Intellical probesProbe cable depth markers for rugged Intellical probesDisposable wipes, 11 x 22 cm185088505/pkg5828610280/pkg2097000Wash bottle, polyethylene, 500 mL162011Shroud kit for standard LDO probes15832500Shroud kit for rugged probes1582590012 English

HACH COMPANY World HeadquartersP.O. Box 389, Loveland, CO 80539-0389 U.S.A.Tel. (970) 669-3050(800) 227-4224 (U.S.A. only)Fax (970) [email protected] HACH LANGE GMBHWillstätterstraße 11D-40549 Düsseldorf, GermanyTel. 49 (0) 2 11 52 88-320Fax 49 (0) 2 11 52 [email protected] Company/Hach Lange GmbH, 2010, 2013, 2021–2022.All rights reserved.HACH LANGE Sàrl6, route de Compois1222 VésenazSWITZERLANDTel. 41 22 594 6400Fax 41 22 594 6499

Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets (MSDS/SDS) for safety protocols. C A U T I O N Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and