Horiba Scientific LAQUAact ES-71 Instruction Manual
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Horiba Scientific LAQUAact ES-71 Instruction Manual

Portable conductivity meter
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Portable Conductivity Meter
ES-71
Instruction Manual
CODE:GZ0000333612

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  • Page 1 Portable Conductivity Meter ES-71 Instruction Manual CODE:GZ0000333612...
  • Page 3 Preface This manual describes the operation of the Portable Conductivity Meter ES-71. Be sure to read this manual before using the product to ensure proper and safe operation of the product. Also safely store the manual so it is readily available whenever necessary.

  • Page 4: Items In Package

    Check items Items in package ■ After opening the package, check for damage on the instrument and that the standard accessories (see below) all exist. If damage or defects are found on the product, contact your dealer. Instrument Instruction manual (this book) Quick-start Manual AAA alkaline batteries...
  • Page 5 Regulations ■ Conformable Directive This equipment conforms to the following directives and standards: Directives: The EMC Directive 2004/108/EC The Low Voltage Directive 2006/95/EC The RoHS Directive 2011/65/EU Standards: [the EMC Directive] EN61326-1:2006 Class B, Basic requirements [the Low Voltage Directive] EN61010-1:2010(Ed.3.0) [the RoHS Directive] EN50581:2012 Category: 9.
  • Page 6 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 7: Hazard Classification And Warning Symbols

    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 8: 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 9 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 10: Product Handling Information

    For your safety Product handling information ■ ●Operational precautions (instrument) ・Do not drop, crash, or give any physical impact on the instrument. ・The instrument is made of solvent-resistant materials but that does not mean it is resistant to all chemicals. Do not dip the instrument in strong acid or alkali solution, or wipe with such solution.
  • Page 11 For your safety ●Operational precautions (battery) ・Do not short circuit a battery. ・Set the + and  side of the battery correctly. ・When the battery has run out or the instrument will not be used for a long time, remove the batteries.

  • Page 12: Manual Information

    For your safety 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.

  • Page 13: Table Of Contents

    Contents Preface ................... I ■ Items in package..............II ■ Hazard classification and warning symbols ....V ■ Safety precautions ............VI ■ Product handling information ........VIII ■ Manual Information ............X Part names and basic operation......... 1 ■ Names of each part .............2 ●...
  • Page 14 Contents ● Saving measurement data in the internal memory....28 ● Displaying saved data .............. 29 ● Deleting all saved data ............. 30 ● Deleting calibration data ............31 ● Printing measured values and calibration data ..... 33 ● Transferring saved data to a PC..........35 ●...
  • Page 15 Contents ● The indicated value does not change/No response ....52 ● The measured value blinks ............52 ● Repeatability of the measured value is poor......52 ● The temperature display blinks or is fixed at 25°C ....53 ● Nothing appears when the power is turned ON .....53 ●...

  • 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....................3 • Battery level display ....................4 ●...

  • Page 18: Names Of Each Part

    Names of each part Names of each part ■ ● Instrument Name Function Display Displays the measured value and set value and so on. Operation keys Used for instrument operation. Electrode connector Connects the BNC connector of the electrode. Temperature connector Connects the temperature connector of the electrode.

  • Page 19: 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 current date and time and the set display area items.

  • Page 20: Battery Level Display

    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. "ERR No. 0002" is displayed and operation is disabled. HORIBA...

  • Page 21: Operation Key

    Names of each part ● Operation key Name Function Changes the operation mode to the measurement mode during operation in a different mode. The changes you made using the setting mode are reflected when you press MEAS key this key to return to the measurement mode. In the measurement mode, switches the automatic hold measurement on/off.

  • Page 22: Basic Operation

    Basic operation Basic operation ■ ● Changing the operation mode This instrument is operated by changing 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, data, or setting mode is available only from the measurement mode.

  • Page 23: Changing The Measurement Parameter

    Basic operation ● Changing the measurement parameter This instrument can measure multiple parameters. In the measurement mode, the measurement parameter can be changed by pressing the key. ES-71...

  • Page 24: 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 25: Entering Numeric Values

    Basic operation ● Entering numeric values When entering numeric values to make various settings and set a calibration value, you can change the selected digit using the keys and increment or decrement the value (0 to 9) using the keys. ES-71...
  • Page 26 M E M O HORIBA...

  • Page 27: Measurement

    Measurement This section describes the basic method of measurement of each measurement parameters. ■ Preparation ................. 12 ● Confirmation before starting measurement ........12 ● Turning ON the instrument..............13 • Inserting the batteries ..................13 • Using the AC adapter (option) ................14 •...

  • Page 28: 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 29: 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 30: Using The Ac Adapter (Option)

    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 63).) 1.

  • Page 31: Setting The Date And Time

    Preparation ● 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. If the setting is incorrect, the date and time of saved data becomes incorrect.

  • Page 32: Connecting An Electrode

    Preparation To change to the setting again, press the key to return to the "DATE" (date and time setting) screen. The settings on screen before the key is pressed are not saved. ● Connecting an electrode To perform measurement, you must use the proper electrode for measurement items being measured.

  • Page 33: Conductivity Measurement

    Conductivity measurement Conductivity measurement ■ The conductivity cell can be used to measure the conductivity, salinity, TDS, and resistivity of a sample. Salinity, TDS, and resistivity are calculated from the measured value of conductivity. Press the key to select the measurement parameter (“ Changing the measurement parameter ”...

  • Page 34: Setting The Instrument

    Conductivity measurement ● Setting the instrument • Setting the temperature display (default: ATC) When a conductivity cell with a temperature sensor is used, or a conductivity cell without a temperature sensor is used with a temperature electrode, the automatic temperature measurement function can be used.

  • Page 35: Setting The Conductivity Unit (Default: S/M)

    Conductivity measurement • Setting the conductivity unit (default: S/m) You can select the conductivity unit from three types, S/m, S/cm, mS/cm FIX (fixed at mS/cm). Select the unit depending on your application. When measuring resistivity, these units correspond to Ω·m, Ω·cm, Ω·cm (for mS/cm FIX).

  • Page 36: Setting The Salinity Unit (Default: Ppt)

    Conductivity measurement • Setting the salinity unit (default: PPT) You can select the salinity unit from PPT or %. Select the unit depending on your application. 1. Press the key to enter the setting mode. 2. Press the keys to select the "UNIT (SAL)" (salinity unit setting) and then press the key.

  • Page 37: Setting The Cell Constant (Default: 1.000×100 M-1)

    Conductivity measurement • Setting the cell constant (default: 1.000×100 m A cell constant is set for each conductivity cell. To measure conductivity correctly, the cell constant of the conductivity cell must be set in the instrument. 1. Press the key to enter the setting mode. 2.

  • Page 38: Setting The Temperature Conversion

    Conductivity measurement • Setting the temperature conversion (Default: ON, 2.00%/°C） The measured value of a sample that is not at 25°C can be converted to a value at 25°C. The temperature characteristics of the conductivity vary by sample. To use the temperature conversion function correctly, temperature coefficient (the rate of change per 1°C of the conductivity) must be set for each sample.

  • Page 39: Performing Salinity Calibration

    Conductivity measurement ● Performing salinity calibration The salinity is calculated from the value of the conductivity, however, one point calibration can be performed using the standard solution. Calibrate at the temperature indicated on the standard solution. 1. Press the key to change the measurement parameter to salinity. Refer to “...
  • Page 40 Conductivity measurement You can cancel calibration by pressing the key while the HOLD icon is blinking. HORIBA...

  • Page 41: Performing Measurement

    Conductivity measurement ● Performing measurement Immersing the conductivity cell in the sample solution can perform measurement in the measurement mode. Also, you can use the automatic hold function to perform stability judgment of the measured value. 1. Press the key to change to the measurement parameter to measure.
  • Page 42 M E M O HORIBA...

  • Page 43: Using Various Functions

    Using various functions This section describes functions available in this instrument. ● Saving measurement data in the internal memory ......28 ● Displaying saved data................. 29 ● Deleting all saved data................ 30 ● Deleting calibration data..............31 ● Printing measured values and calibration data........ 33 ●...

  • Page 44: Saving Measurement Data In The Internal Memory

    Saving measurement data in the internal memory ● Saving measurement data in the internal memory Up to 1000 data items measured by the instrument can be stored in the internal memory of the instrument. The measurement data is saved in the internal memory in the measurement mode, except during the automatic hold measurement.

  • Page 45: Displaying Saved Data

    Displaying saved data ● 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 "OUT" (display saved data) and then press the key.

  • Page 46: Deleting All Saved Data

    Deleting all saved data ● Deleting all saved data You can delete all data saved in the internal memory. However, you cannot delete a data individually. Copy or transfer necessary data to a PC for storage. 1. Press the key to enter the setting mode. 2.

  • Page 47: Deleting Calibration Data

    Deleting calibration data ● Deleting calibration data You can delete the calibration data set in the instrument. 1. Press the key to enter the setting mode. 2. Press the keys to select the "MAINT" (maintenance setting) and then press key. 3.
  • Page 48 Deleting calibration data 5. Select "YES" to delete the calibration data, or select "NO" to cancel deleting it. And then press the key. When "YES" is selected, "END" appears after deletes calibration data. Press the key. To return to the setting mode, press the key.

  • Page 49: Printing Measured Values And Calibration Data

    Printing measured values and calibration data ● Printing measured values and calibration data You can print out the measured value or calibrated value displayed on the instrument, or the measurement data or the calibration data saved in the instrument. If repeatability inspection has been inspected, the inspection data is printed out with the calibration data.
  • Page 50 Printing measured values and calibration data < The data saved in internal memory > Printout format Description Data number Memory Num ： 0001 Measurement date Date ： 2013/09/01 Measurement time Time ： 09 ： 00 Measurement channel Channel ： 1 Measured value COND ：...

  • Page 51: Transferring Saved Data To A Pc

    Transferring saved data to a PC ● Transferring saved data to a PC By using a serial cable (“ Options ” (page 63)) to connect the instrument to a PC, you can transfer the saved data to the PC and edit it. Connect the serial connector at the instrument side to the serial port on the PC.

  • Page 52: 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 (ex.PC) via the RS- 232C communication. Use the serial cable to connect the serial connector on the instrument side and the serial port on the PC.

  • Page 53: Using The Automatic Data Save (Default: Off)

    Using the automatic data save (default: OFF) ● Using the automatic data save (default: OFF) You can automatically save data in the internal memory at the specified interval. While using this function, the automatic power off setting is disabled. If the batteries run out while using the automatic data save function, the data saved until just before the batteries run out.
  • Page 54 Using the automatic data save (default: OFF) 4. Press the key to enter the measurement mode. When this setting is "ON", "AUTO LOG", which indicates that the automatic data save function is on, is displayed. 5. Pressing the key starts saving the data (when the setting is "ON"). Pressing the key again stops the data saving process.

  • Page 55: Setting The Id Number (Default: 000)

    Setting the ID number (default: 000) ● Setting the ID number (default: 000) You can set an ID number to differentiate the sample of the data to be saved. When the data is saved in the internal memory, the ID number entered in this setting is saved together with the data.

  • Page 56: Calibrating Temperature Sensor

    Calibrating temperature sensor ● 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. Immerse the electrode into the solution until the temperature sensor is immersed.

  • Page 57: Changing The Automatic Power Off Setting (Default: Off)

    Changing the automatic power off setting (default: OFF) ● Changing the automatic power off setting (default: OFF) 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 58: 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 59: 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 60 M E M O HORIBA...

  • Page 61: Maintenance

    Maintenance and storage of the instrument 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. ● Maintenance and storage of the instrument ・...

  • Page 62: Maintenance And Storage Of The Conductivity Cell

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

  • Page 63: Checking And Calibrating The Conductivity Cell

    Checking and calibrating the conductivity cell ● Checking and calibrating the conductivity cell If the conductivity cell is used for a long period, the cell constant gradually changes. For this reason, check the conductivity cell about once every three months. If the result of the check is a deviation of 5% or higher, calibrate the conductivity cell.
  • Page 64 Checking and calibrating the conductivity cell 5. Press the key to enter the calibration mode, and enter the conductivity value of the standard solution. 6. Wash the conductivity cell with pure water (or deionized water) and wipe it with filter paper or tissue paper.

  • Page 65: 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 ■...

  • Page 66: Err No.0003 　 Electrode Stability Error

    When an error message appears ● ERR No.0003 　 Electrode stability error Detected an electrode error because the electrical potential does not stabilize after 3 or more minutes during measurement or calibration. Cause How to solve problem The stability of electrode is affected by the sample solution.

  • Page 67: Troubleshooting

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

  • Page 68: The Indicated Value Does Not Change/No Response

    Troubleshooting ● The indicated value does not change/No response Cause How to solve problem The conductivity cell is broken. Replace the conductivity cell. The conductivity cell is not Connect the conductivity cell correctly. connected correctly. Turn off the power, remove the batteries, and then turn Keys are locked.

  • Page 69: The Temperature Display Blinks Or Is Fixed At 25°C

    Troubleshooting ● The temperature display blinks or is fixed at 25°C The measured value blinks when it is out of the measurement range. Cause How to solve problem Sample temperature is out of the Set to a temperature within the measurement range. measurement range.

  • Page 70: Part Of The Display Is Missing

    Troubleshooting ● Part of the display is missing If part of the display is missing, it is the Instrument defect. Contact your dealer. It is possible to check part of the display is missing. The display can be set to full screen display.

  • Page 71: Appendix

    Main specifications 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 ES-71 Measurement Conductivity, salinity, TDS, resistivity, temperature parameters Operating ambient 0°C to 45°C temperature, humidity...
  • Page 72 Main specifications ・ Specification of each measurement parameters Measurement Item Description parameter Measuring principle Thermistor method 30.0°C to 130.0°C Display range Temperature Measuring range 0.0°C to 100.0°C Resolution 0.1°C Repeatability ±0.1°C ±1 digit Measuring principle 2 AC bipola method Cell constant 100 m : 0.000 mS/m to 20.00 S/m Measuring range Cell constant 10 m...

  • Page 73: Table Of Conductivity Cell Range

    Main specifications ● Table of conductivity cell range ・ Unit: S/m Cell constant Range 1000 m 100 m 10 m 20.0 to 199.9 S/m 2.00 to 19.99 S/m 0.200 to 1.999 S/m 20.0 to 199.9 mS/m 2.00 (0.00) to 19.99 mS/m 0.200 (0.000) to 1.999 mS/m 0.0 to 199.9 µS/m ・...

  • Page 74: Table Of Conductivity Cell Range (Resistivity Range)

    Main specifications ● Table of conductivity cell range (resistivity range) ・ Unit: Ω·m Cell constant Range 1000 m 100 m 10 m 0.200 to 1.999 MΩ·m 20.0 to 199.9 kΩ·m 2.00 to 19.99 kΩ·m 0.200 to 1.999 kΩ·m 20.0 （0.0） to 199.9 Ω·m 2.00 （0.00）...

  • Page 75: Instrument Default Settings

    Instrument default settings Instrument default settings ■ Measurement Selection item/Setting Item Default values range parameter Automatic (ATC)/ Temperature setting Automatic (ATC) Manual (MTC) Temperature input value 0.0°C to 100.0°C 25.0°C Auto power off ON/OFF Common Auto power off time 1 min to 30 min 30 min Sample ID 000 to 2999...

  • Page 76: Technical Note

    Technical note Technical note ■ ● Conductivity measurement Conductivity is an index that expresses the ease with which electric current flows through a material. Conductors are categorized either as electron conductors (such as metals and other substances which use free electrons to conduct electricity) or ion conductors (such as electrolytic solution or fused salt, which use ions to conduct electricity).
  • Page 77 Technical note As is clear from equation ② , when a conductivity cell having a cell constant "J" of 1 m is used (in other words, when a conductivity cell having two pole plates that each have an area "a" of 1 m and are positioned parallel to each other such that the distance "l"...

  • Page 78: For More Information

    For more information For more information ■ This manual describes conductivity measurement. For detailed information, see "The Story of pH and Water quality" on our website. This page presents the knowhow we have cultivated over many years, for example, how temperature affects measured values and what to do when you want to measure various samples.

  • Page 79: 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 80 M E M O HORIBA...
  • Page 81 2 Miyanohigashi, Kisshoin Minami-ku, Kyoto 601-8510 Japan http://www.horiba.com...

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