horiba LAQUAact-DO120 Instruction Manual
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horiba LAQUAact-DO120 Instruction Manual

Handheld dissolved oxygen meter
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Handheld Dissolved Oxygen Meter
LAQUAact-DO110
LAQUAact-DO120
Instruction Manual
CODE:GZ0000427798

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  • Page 1 Handheld Dissolved Oxygen Meter LAQUAact-DO110 LAQUAact-DO120 Instruction Manual CODE:GZ0000427798...
  • Page 3 HORIBA, Ltd. warrants that the Product shall be free from defects in material and workmanship and agrees to repair or replace free of charge, at option of HORIBA, Ltd., any malfunctioned or damaged Product attributable to responsibility of HORIBA, Ltd. for a period of two (2) year from the delivery unless otherwise agreed with a written agreement.
  • Page 4 Contact your supplier for information on applicable disposal methods. ●Authorised Representative in EU HORIBA UK Limited 2 Dalston Gardens, Stanmore, Middx HA7 1BQ, UK...
  • Page 5 Regulations ■ FCC rules Any changes or modifications not expressly approved by the party responsible for compliance shall void the user's authority to operate the equipment. ●WARNING This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules.
  • Page 6 For your safety ■ Hazard classification and warning symbols Warning messages are described in the following manner. Read the messages and follow the instructions carefully. ●Hazard classification This indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This is to be limited to the most extreme situations.

  • Page 7: Safety Precautions

    For your safety ■ Safety precautions This section provides precautions for using the product safely and correctly and to prevent injury and damage. The terms of DANGER, WARNING, and CAUTION indicate the degree of imminency and hazardous situation. Read the precautions carefully as it contains important safety messages.
  • Page 8 For your safety ●Battery WARNING Keep batteries out of reach of children. If someone accidentally swallows a battery, consult a doctor immediately. If alkaline fluid from a battery gets into the eyes, do not rub the eyes, rinse with clean water immediately and then consult a doctor. Contact with alkaline fluid could cause blindness.

  • Page 9: Product Handling Information

    For your safety ■ Product handling information ●Operational precautions (instrument) ・Only use the product including accessories for their intended purpose. ・The function that measuring dissolved oxygen of the instrument is only usable for measuring under water. Do not use this function for the application except described above.
  • Page 10 For your safety ・If the power supply is interrupted while measurement data is being saved in the instrument, the data could be corrupted. ・A NiMH rechargeable battery can be used in this instrument, but the battery used in the instrument cannot be charged using the AC adapter. ●Operational precautions (battery) ・Do not short-circuit a battery.

  • Page 11: Description In This Manual

    Manual information ■ Description in this manual Note This interprets the necessary points for correct operation and notifies the important points for handling the product. Reference This indicates the part where to refer for information. This indicates reference information. Description of this manual uses the screen display of DO120.
  • Page 12 M E M O...

  • Page 13: Table Of Contents

    Contents Preface ................... I ■ Hazard classification and warning symbols ....IV ■ Safety precautions ............. V ■ Product handling information ......... VII ■ Description in this manual..........IX Part names and basic operation......... 1 ■ Names of each part .............2 ●...
  • Page 14 Contents Using various functions ............ 31 ■ Data functions..............32 ● Displaying saved data .............. 32 ● Using the automatic data save ..........33 ● Deleting all saved data ............. 36 ■ Measurement setting............38 ● Displaying the latest calibration..........38 ● Deleting calibration data ............39 ■...
  • Page 15 Contents ● ERR No.0001 　 Memory error ...........59 ● ERR No.0002 　 Empty battery level .........59 ● ERR No.0005 　 Electrode sensitivity error......60 ● ERR No.0009 　 Printer error .............60 ● ERR No.0010 　 Memory full ............61 ■ Troubleshooting ..............62 ●...
  • Page 16 M E M O...

  • Page 17: Part Names And Basic Operation

    Part names and basic operation This section describes the name of each part and the main role, function, and basic operation method of each part. ■ Names of each part..............2 ● Instrument....................2 ● Display....................4 ● Operation key ..................6 ■...

  • Page 18: Names Of Each Part

    Names of each part ■ Names of each part ● Instrument * : DO120 only Name Function Display Displays the measured value and set value and so on. Used for instrument operation. Operation keys (LIGHT key: DO120 only) Electrode connector Connects the BNC connector of the electrode.
  • Page 19 Names of each part • Identification of manufacturing date Manufacturing date can be identified from MFG No. described in the ID label on the backside of the instrument. Third number from the left in the MFG No. indicates manufacturing year. Forth alphabet from the left in the MFG No.

  • Page 20: Display

    Names of each part ● Display Name Function Displays the current operation mode, electrode Status icon status, printer or PC connection status, and remaining battery level. Direction key icon Displays the currently available direction key. Date and time, set item Displays the date and time and the set items.
  • Page 21 Names of each part •Battery level display Battery level is high. Battery level is a little lower. Battery level is low. The backlight may become unavailable. Battery has run out. Replace the batteries or use AC adapter (option). "ERR No. 0002" is displayed and operation is disabled.

  • Page 22: Operation Key

    Names of each part ● Operation key Name Function Changes the operation mode to the measurement mode during operation in a different mode. MEAS key Releases the fixed measurement value mode in the auto hold mode. Changes from the measurement mode to the calibration CAL key mode.

  • Page 23: Basic Operation

    Basic operation ■ Basic operation ● Function layer The function layer of the data mode and setting mode is shown as below. "dX" and "PXX" indicates the program number which is shown in the screen of the instrument. • Data mode Screen Layer Description...
  • Page 24 Basic operation • Setting mode Screen Layer Description P1: DO DO measurement settings P11: SAL Salinity correction setting P12: PRES KPA Air pressure correction setting P13: CAL DATA Calibration data display P14: CAL CLR Deletion of calibration data P2: TEMP Temperature setting Selection of temperature conversion or display...

  • Page 25: Changing The Operation Mode

    Basic operation ● Changing the operation mode Change the operation mode from four available modes depending on the purpose of use. The status icon indicates the current mode. You can change the operation mode using the corresponding key. However changing to the calibration mode, data mode, or setting mode is possible only from the measurement mode.

  • Page 26: Changing The Measurement Parameter

    Basic operation ● Changing the measurement parameter This instrument measures multiple parameters. For measurement, an electrode corresponding to the measurement parameter is required. In the measurement mode, the measurement parameter can be changed by pressing the key. This operation is available for the channel that is shown on the main screen.

  • Page 27: Using The Backlight

    Basic operation ● Using the backlight When it is difficult to see the screen in a dark location, you can turn on the backlight by pressing the key. If the backlight is not operated for 5 minutes, it automatically turns off.

  • Page 28: Saving Measurement Data In The Internal Memory

    Basic operation ● Saving measurement data in the internal memory Up to 100 (DO110) or 1000 (DO120) data items measured by the instrument can be stored in the internal memory. Saving the measurement data is possible only when the instrument is in the measurement mode. 1.

  • Page 29: Measurement

    Measurement This section describes the basic method of measurement of each measurement parameters. ■ Preparation ................. 14 ● Confirmation before starting measurement ........14 ● Turning ON the instrument..............15 ● Connecting an electrode ..............18 ■ Dissolved oxygen measurement ..........19 ●...

  • Page 30: Preparation

    Preparation ■ Preparation ● Confirmation before starting measurement ・ Have you prepared the appropriate electrode for the measurement parameter? ⇒ If not, purchase the appropriate electrode. ・ Is the prepared electrode in good condition? ⇒ If the responsive part is stained or damaged, it may not be possible to obtain 　...

  • Page 31: Turning On The Instrument

    Preparation ● Turning ON the instrument • Inserting the batteries This instrument is operated by batteries. You can use AAA alkaline batteries or AAA Ni- MH rechargeable batteries. Perform the following procedure to insert batteries in the instrument. 1. Turn the knob on the battery cover on the back of the instrument counterclockwise to unlock the battery cover.
  • Page 32 Preparation • Using the AC adapter (option) It is possible to use the AC adapter to operate the instrument. Perform the following procedure to connect AC adapter to the instrument. The AC adapter is an option. To purchase it, contact your dealer. (Refer to "Options" (page 70).) 1.
  • Page 33 Preparation • Pressing the POWER key After setting the batteries or connecting the AC adapter, press the key over one second. The LCD is fully displayed for one second, and the screen displays the version number of software and the model, and then displays the measurement mode. Note ・...

  • Page 34: Connecting An Electrode

    Preparation ● Connecting an electrode To perform measurement, it is necessary use the appropriate electrode for measurement parameters. Recommended electrodes for each measured sample are listed in our product catalog and on our website. Refer to them when preparing electrodes. Use the following procedure to correctly connect the electrode to the instrument.

  • Page 35: Dissolved Oxygen Measurement

    Dissolved oxygen measurement ■ Dissolved oxygen measurement You can measure the dissolved oxygen, oxygen concentration, and saturated oxygen concentration of a sample with a DO electrode. Oxygen concentration and saturated oxygen concentration are calculated from the measured value of dissolved oxygen. Press the key to select the measurement parameter ("Changing the measurement parameter"...
  • Page 36 Dissolved oxygen measurement In the case of "ATC", you can calibrate the temperature sensor (refer to "Calibrating temperature sensor" (page 41)). 3. In the case of "MTC", enter the temperature to be compensated for and press key to confirm. Enter a number To return to the measurement mode, press the key.
  • Page 37 Dissolved oxygen measurement • Setting salinity correction (default: 0.0 PPT) Because dissolved oxygen is affected by the salinity concentration, you need to correct it at measurement. Set the salinity concentration of the sample beforehand. You can select arbitrary numeric value or sea concentration (35.0 PPT). If the measured target does not contain saline matter, set to 0.0 PPT.
  • Page 38 Dissolved oxygen measurement • Setting air pressure correction (default: 101.3 kPa) Because dissolved oxygen is affected by air pressure in the location where measurement is taking place, you need to correct it at measurement. At sea level, you can use the instrument with the default setting. If you are using the instrument in a high altitude area, you must set the air pressure correction.
  • Page 39 Dissolved oxygen measurement 4. Enter the air pressure value of the measurement location and then press the key. Enter a number To return to the measurement mode, press the key.

  • Page 40: Performing Calibration

    Dissolved oxygen measurement ● Performing calibration Calibration of the DO electrode is required to measure dissolved oxygen accurately. We recommend performing calibration once a day, before the first measurement. According to the following procedure, perform calibration accurately. You can use the saturated oxygen concentration mode (%) or dissolved oxygen measurement mode (mg/L) for calibration.
  • Page 41 Dissolved oxygen measurement Stabilized key or You can finish calibration by pressing the key. 5. To perform zero calibration, immerse the same electrode in the zero standard solution. Stability judgment starts and the sat.ratio icon blinks. When the value is stabilized, the sat.ratio icon changes from the blinking state to the lit state.
  • Page 42 Dissolved oxygen measurement • Calibrating in the dissolved oxygen measurement mode When you perform two-point calibration in the dissolved oxygen measurement mode, calibrate in the order from a high-concentration solution to a low-concentration solution. 1. Clean the membrane at the tip of the DO electrode with pure water (or deionized water) and wipe it with a soft cloth at least 10 minutes before calibration.
  • Page 43 Dissolved oxygen measurement Stabilized Enter a number key or You can finish calibration by pressing the key. 8. To perform the 2nd point calibration, clean the DO electrode well in the same manner as the step 1. and immerse it in the second standard solution (low- concentration solution).
  • Page 44 Dissolved oxygen measurement 11. Press the key or the key. The value is set to the displayed value, and the display returns to the measurement mode. Stabilized Enter a number key or Calibration using the standard solution is complete. Note ・...

  • Page 45: Performing Measurement

    Dissolved oxygen measurement ● Performing measurement You can perform measurement in the measurement mode by immersing the DO electrode in the sample. Also, you can use the automatic hold function to judge the stability of the measured value. The automatic hold function has two modes, the auto stability mode and the auto hold mode.

  • Page 46: Saving Measured Value

    Dissolved oxygen measurement Note • The criteria of stability judgment in the automatic hold measurement are as follows. Dissolved oxygen: Display value change for 10 seconds is less than 0.03 mg/L and temperature change is less than 2.0°C. Oxygen concentration: Display value change for 10 seconds is less than 0.1% and temperature change is less than 2.0°C.

  • Page 47: Using Various Functions

    Using various functions This section describes functions available in this instrument. ■ Data functions............32 ● Displaying saved data................. 32 ● Using the automatic data save............33 ● Deleting all saved data................ 36 ■ Measurement setting..........38 ● Displaying the latest calibration and inspection data ..... 38 ●...

  • Page 48: Data Functions

    Displaying saved data ■ Data functions ● Displaying saved data You can display the data saved in the internal memory. 1. Press the key to enter the data mode. 2. Press the keys to select "DATA OUT" (display saved data) and then press key.

  • Page 49: Using The Automatic Data Save

    Using the automatic data save ● Using the automatic data save This function saves the data in the internal memory of the instrument at the specified interval automatically. While using this function, auto stability and hold mode are not available and the automatic power off setting is disabled.
  • Page 50 Using the automatic data save 4. Enter the period of saving in minutes and press the key. A period from 0 min to 3600 min can be set. "0" indicates no period. Enter a number Enter a number 5. Press the key to enter the measurement mode.
  • Page 51 Using the automatic data save 6. Pressing the key starts saving the data (when the setting is "ON"). Pressing the key again stops the data saving process. During automatic data saving measurement, data is displayed for one second each time a measurement takes place.

  • Page 52: Deleting All Saved Data

    Deleting all saved data ● Deleting all saved data Delete all data saved in the internal memory. Data cannot be deleted selectively. Copy or transfer the data to a PC for storage if necessary. 1. Press the key to enter the data mode. 2.
  • Page 53 Deleting all saved data 3. Select "YES" to delete the saved data, or select "NO" to cancel deleting it. And then press the key to confirm. When "YES" is selected, "END" appears after deletion is complete. Select "YES" and press the To return to the measurement mode, press the key.

  • Page 54: Measurement Setting

    Displaying the latest calibration ■ Measurement setting ● Displaying the latest calibration You can display the latest calibration data. 1. Press the key to enter the setting mode. 2. Press the keys to select "DO" (DO correcting setting) and then press the key.

  • Page 55: Deleting Calibration Data

    Deleting calibration data ● Deleting calibration data Delete the calibration data set in the instrument. 1. Press the key to enter the setting mode. 2. Press the keys to select "DO" (DO correcting setting) and then press the key. 3. Press the keys to select "CAL CLR"...
  • Page 56 Deleting calibration data 4. Select "YES" to delete the calibration data, or select "NO" to cancel deleting it. And then press the key to confirm selection. When "YES" is selected and is pressed, "END" appears after deletion is complete. Select "YES" and press the To return to the measurement mode, press the key.

  • Page 57: Temperature Settings

    Calibrating temperature sensor ■ Temperature settings ● Calibrating temperature sensor The temperature sensor or temperature compensation electrode in the combination electrode has ±1°C accuracy without calibration. You can use a known temperature solution to calibrate the temperature sensor. 1. Insert the temperature connector into the temperature connector (T) on the instrument.
  • Page 58 Calibrating temperature sensor To return to the measurement mode, press the key. Note When initializing temperature calibration data, all settings need to be initialized. Perform initialization by referring to “ Resetting to factory default settings ” (page 47). When initialization is performed, all saved data is deleted. Copy or transfer necessary data to a PC for storage.

  • Page 59: General Settings

    Setting the auto stability and auto hold function ■ General settings ● Setting the auto stability and auto hold function This instrument has the auto stability mode and the auto hold mode. • Auto stability mode (displayed as AS) When the criterion for stability judgment is fulfilled during measurement, the component icon lights and the measured value is fixed.
  • Page 60 Setting the auto stability and auto hold function 4. Select "AS" to set the auto stability, or select "AH" to set the auto hold. And then press the key to confirm selection. Select "AS" and press To return to the measurement mode, press the key.

  • Page 61: Changing The Automatic Power Off Setting (Default: 30 Min)

    Changing the automatic power off setting (default: 30 min) ● Changing the automatic power off setting (default: 30 min) You can set the instrument to automatically turn OFF when there is no key operation for a certain period of time. This function is disabled during automatic data memory saving or remote operation using an external device.
  • Page 62 Changing the automatic power off setting (default: 30 min) 4. Enter the automatic power off time and press the key. The setting range is 0 min to 30 min. "0" indicates the automatic power off is "OFF." Enter a number To return to the measurement mode, press the key.

  • Page 63: Resetting To Factory Default Settings

    Resetting to factory default settings ● Resetting to factory default settings The instrument settings can be reset to the factory default settings. The calibration data is deleted but the data of date and time, and the saved data are not deleted. Make sure there will be no problems before using this function.
  • Page 64 Resetting to factory default settings 4. Select "YES" to initialize the settings to the factory default settings, or select "NO" to cancel initialization. And then press the key to confirm selection. When "YES" is selected, "END" appears after the settings are initialized and then the instrument is automatically power OFF.

  • Page 65: Setting The Date And Time

    Setting the date and time ● Setting the date and time When using the instrument for the first time or after replacing the batteries, set the date and time. After setting, the date and time data is displayed correctly when saving data in the internal memory.
  • Page 66 Setting the date and time 6. Press the key to confirm. Enter a Enter a number and number and press press Enter a Enter a number and number and press press To return to the setting mode, press the key.

  • Page 67: Performing Test Printing Of The Printer Unit

    Performing test printing of the printer unit ● Performing test printing of the printer unit In order to check whether the printer unit is operating correctly or there is a printer communication problem, you can perform test printing. Connect the instrument and a printer correctly and perform the following procedure for test printing.
  • Page 68 Performing test printing of the printer unit 3. Press the keys to select "PRINT" (test print) and then press the key. Printing starts automatically. When printing ends, the printer icon lights and "END" appears. Press the key or the key. Printed key or To return to the measurement mode, press the...

  • Page 69: Other Settings

    Over: OR Under: UR Temperature value, temperature setting and out of the measurement range or Temperature : 25.0°C MTC displaying range mark Over: OR Under: UR Inst. model : LAQUAact-DO120 Instrument model Inst. SN : KL1TSE10 Instrument serial number...
  • Page 70 Printing measured values and calibration data < Calibration data (DO calibration (%)) > Printout format Description Inst. model : LAQUAact-DO120 Instrument model Inst. SN : KL1TSE10 Instrument serial number Span. Coef : 1.23 Span calibration coefficient Zero. Coef : 0.12...

  • Page 71: Transferring Saved Data To A Pc

    Transferring saved data to a PC ● Transferring saved data to a PC By using a serial cable to connect the instrument to a PC, you can transfer the saved data to the PC and edit it (DO120 only). Connect the RS-232C connector at the instrument side to the serial port on the PC.

  • Page 72: Operating The Instrument From An External Device

    Operating the instrument from an external device ● Operating the instrument from an external device You can remotely operate the instrument from an external device (such as PC) via RS- 232C communication. Use a serial cable to connect the serial connector on the instrument and the serial port on the PC.

  • Page 73: Maintenance

    Maintenance Maintenance This section describes maintenance of the instrument and the electrodes that are used with the instrument. To use them for a long period, perform the described maintenance procedures appropriately. ● Contact for maintenance Please contact your dealer for the product maintenance. ●...

  • Page 74: Maintenance And Storage Of The Do Electrode

    Maintenance ● Maintenance and storage of the DO electrode For the detailed procedures for maintaining and storing electrodes, refer to the instruction manual for each electrode. This section describes an overview of the procedures for maintenance and storage to be performed as part of daily use. •...

  • Page 75: How To Resolve Errors Or Troubles

    When an error message appears How to resolve errors or troubles This section describes the causes of typical problems and the actions to be taken, including questions frequently asked by customers. Check these before contacting us. ■ When an error message appears If "ERR No.00XX"...

  • Page 76: Err No.0005 　 Electrode Sensitivity Error

    When an error message appears ● ERR No.0005 　 Electrode sensitivity error Detected that the electrode sensitivity is out of the setting range that allows normal measurement. Cause How to solve problem The electrode is dirty. Clean the electrode. The electrode is cracked. Replace the electrode.

  • Page 77: Err No.0010 　 Memory Full

    When an error message appears ● ERR No.0010 　 Memory full Attempted to save more than the specified number of items. Cause How to solve problem The maximum number of savable items of data is 100 Saving more than specified (DO110) or 1000 (DO120).

  • Page 78: Troubleshooting

    Troubleshooting ■ Troubleshooting This section describes causes and actions to take for problems that customers frequently ask us. ● The indicated value fluctuates < Problem with the electrode > Cause How to solve problem The electrode is dirty. Clean the electrode. The electrode is cracked.

  • Page 79: The Response Is Slow

    Troubleshooting ● The response is slow Cause How to solve problem The electrode is dirty. Clean the electrode. The electrode is cracked. Replace the electrode. The wrong internal solution is Use the correct internal solution. being used. It is important to select an electrode that is appropriate for the sample.

  • Page 80: The Measured Value Is Out Of The Measurement Range

    Troubleshooting ● The measured value is out of the measurement range When the measured value is below the display range, "Ur" appears. When the measured value is over the display range, "Or" appears. Cause How to solve problem Sample is out of the Use a sample within the measurement range.

  • Page 81: Nothing Appears When The Power Is Turned On

    Troubleshooting ● Nothing appears when the power is turned ON Cause How to solve problem Power is not supplied. Insert batteries or connect the AC adapter (option). Battery polarity (+, ) is Insert the batteries with the polarity (+, ) correctly reversed.
  • Page 82 M E M O...

  • Page 83: Appendix

    This section describes the specifications of the instrument, default settings, measurement principles, and other technical information. Options for the instrument are also described. ■ Main specifications Item Contents Model LAQUAact-DO110, LAQUAact-DO120 Measurement Dissolved oxygen, oxygen concentration, saturated oxygen parameters concentration, temperature Operating ambient 0°C to 45°C temperature, humidity 80% or less in relative humidity (no condensation) AAA alkaline batteries (LR03) or AAA NiMH rechargeable...

  • Page 84: Instrument Default Settings

    Instrument default settings ■ Instrument default settings Measurement Selection item/Setting Item Default values range parameter Auto hold AS/AH Temperature input value 0.0°C to 100.0°C 25.0°C Auto power off time 30 min 0 min to 30 min * Auto data memory time Common 0, 2 s to 3600 s * (DO120 only)

  • Page 85: Technical Note

    Technical note ■ Technical note ● Saturated DO levels in water at various temperatures Saturated Saturated Saturated Saturated Temp. Temp. Temp. Temp. (°C) (°C) (°C) (°C) (mg/L) (mg/L) (mg/L) (mg/L) 13.77 10.67 8.68 7.42 13.40 10.43 8.53 7.32 13.04 10.20 8.39 7.22 12.70...

  • Page 86: Options

    Options ■ Options A wide variety of electrodes and options are available for use with the instrument. You can select the optimum electrode and options for your application and objectives. These options can be purchased from your nearest agency. Please provide the part name and part number to the representative.
  • Page 87 2 Miyanohigashi, Kisshoin Minami-ku, Kyoto 601-8510 Japan http://www.horiba.com Distributed by: ABQ Industrial LP USA Tel: +1 (281) 516-9292 / (888) 275-5772 eFax: +1 (866) 234-0451 Web: https://www.abqindustrial.net E-mail: info@abqindustrial.net...

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