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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

・

Specification of each measurement parameter

Item

Description

Model

D-72G

Brand (pet name)

LAQUAact

Series name

Portable pH



Water Quality Meter

Model description

pH/ORP Meter

Measurement

parameters

pH, mV (ORP), temperature

Operating ambient

temperature, humidity

0°C to 45°C

80% or less in relative humidity (no condensation)

Power

AAA alkaline batteries (LR03) or AAA Ni



MH rechargeable

batteries × 2

AC adapter 100 V to 240 V, 50/60 Hz, 0.37 A (option)

Dimensions

Approx. 67 (80) × 28 (42) × 170 mm

(The figures in parentheses are maximum thicknesses.)

Mass

Approx. 270 g (without batteries)

Measurement

parameter

Item

Description

Measuring principle

Glass electrode

Display range



2.00 to pH 16.00

Measuring range

pH 0.00 to pH 14.00

Resolution

0.01 pH

Repeatability

±0.01 pH ±1 digit

mV (ORP)

Measuring range

±2000 mV

Resolution

1 mV

Repeatability

±1 mV ±1 digit

temperature

Measuring principle

Thermistor method

Display range



30.0°C to 130.0°C

Measuring range

0.0°C to 100.0°C

Resolution

0.1°C

Repeatability

±0.1°C ±1 digit

Содержание LAQUAact D-72G

Страница 1: ...Instruction Manual pH ORP Meter D 72G Preface Part names and basic operation Measurement Various functions Maintenance How to resolve errors or troubles Appendix Portable pH Water Quality Meter...

Страница 2: ......

Страница 3: ...rein shall be extended Any malfunction or damage attributable to improper operation Any malfunction attributable to repair or modification by any person not authorized by HORIBA Advanced Techno Co Ltd...

Страница 4: ...ries see below all exist If damage or defects are found on the product contact your dealer Note The accessories are not waterproof The supplied alkaline batteries are used to check operation thus it i...

Страница 5: ...n this case it satisfies the requirements of the Directive 2006 66 EC for the object chemical This product should not be disposed of as unsorted household waste Your correct disposal of WEEE waste bat...

Страница 6: ...o provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not...

Страница 7: ...tal protection use period in years It does not indicate a product guarantee period It guarantees that the product will not cause environment pollution nor serious influence on human body and property...

Страница 8: ...accordance with SJ T 11364 GB T 26572 Denotes that the amount of the hazardous substance contained in all of the homogeneous materials used in the component is below the limit on the acceptable amount...

Страница 9: ...riellen Umgebung k nnen die elektromagnetischen St rungen eventuell zu Produktfehlfunktionen f hren Um dieses Produkt unter solchen Umst nden verwen den zu k nnen muss der Benutzer ggf angemessene Ma...

Страница 10: ...sono soggetti a modifiche senza preavviso Ambiente di installazione Questo prodotto non stati progettati per essere utilizzati in ambienti industriali secondo la norma EN61326 1 In un ambiente indust...

Страница 11: ...0 1 Categor a de sobretensi n II Nivel de contaminaci n 2 POL Informacje dotycz ce bezpiecze stwa Przed przyst pieniem do u ytkowania tego produktu nale y dok adnie zapozna si z niniejsz instrukcj aby...

Страница 12: ...d Installatieomgeving Dit product is niet bedoeld voor gebruik in een industri le omgeving zoals gedefinieerd in EN 61326 1 In een industri le omgeving kan de elektromagnetische interferentie de werki...

Страница 13: ...solution comes in contact with the skin wash it off immediately If it gets into the eyes flush with plenty of water and then consult a doctor Broken glass Broken glass may cause injury The outer tube...

Страница 14: ...ing the batteries while connected to the AC adapter the instrument does not have the dust proof and waterproof performance The dust proof and waterproof performance is maintained only when the covers...

Страница 15: ...ery Do not attempt to charge a non rechargeable battery Environmental conditions for use and storage Temperature 0 C to 45 C Humidity under 80 in relative humidity and free from condensation Avoid the...

Страница 16: ...ecessary points for correct operation and notifies the important points for handling the product This indicates the part where to refer for information This indicates reference information Original la...

Страница 17: ...ing date 2 Display 3 Operation key 5 Basic operation 6 Changing the operation mode 6 Changing the measurement parameter 7 Using the backlight 7 Entering numeric values 8 Measurement 9 Preparation 10 C...

Страница 18: ...instrument from an external device 40 Using the automatic data save default OFF 41 Setting the ID number default 000 43 Using the calibration interval alarm default OFF 44 Calibrating temperature sen...

Страница 19: ...error 56 ERR No 0010 Memory full 56 Troubleshooting 57 The indicated value fluctuates 57 The response is slow 58 The indicated value does not change No response 58 The measured value blinks 59 The te...

Страница 20: ...Contents XVIII For more information 68 Options 69...

Страница 21: ...tion and basic operation method of each part Names of each part 2 Instrument 2 Identification of manufacturing date 2 Display 3 Battery level display 4 Operation key 5 Basic operation 6 Changing the o...

Страница 22: ...ured in 2016 January No Name Function 1 Display Displays the measured value and set value and so on 2 Operation keys Used for instrument operation 3 Electrode connector Connects the BNC connector of t...

Страница 23: ...isplays the currently set measurement parameter 7 HOLD icon Lights when the measured value display is fixed 8 SET icon Lights when numerical values are entered 9 Temperature display area Displays the...

Страница 24: ...tery 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 an...

Страница 25: ...nt mode to the data mode SET key Changes from the measurement mode to the setting mode Starts repeatability inspection after calibration is complete Changes from the setting mode to the measurement mo...

Страница 26: ...data or setting mode is available only from the measurement mode When changing to a different mode first change to the measurement mode and then change to the desired mode Icon Name Function Measurem...

Страница 27: ...nged by pressing the key 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...

Страница 28: ...tering 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 usi...

Страница 29: ...measurement 15 Setting the instrument 15 Setting temperature compensation default ATC 15 Setting the standard solution used for calibration default NIST 16 Standard solution type 17 Performing calibra...

Страница 30: ...d solution for the measurement parameter If not prepare the standard solution by yourself or purchase it Are there any items that should not be wet or stained around the instrument Depending on the op...

Страница 31: ...n the battery cover on the back of the instrument clockwise to lock the battery cover Note Do not replace the batteries in a dusty place or with wet hands Dust or moisture could get inside the instrum...

Страница 32: ...with force when the connector does not match the socket When not using the AC adapter close the AC adapter connector cover While connected to the AC adapter the instrument does not have the dust proof...

Страница 33: ...nd time of saved data becomes incorrect Refer to Displaying saved data page 31 1 Press the key to enter the setting mode 2 Press the keys to select the MAINT maintenance setting and then press the key...

Страница 34: ...reparing electrodes Use the following procedure to correctly connect the electrode to the instrument 1 Insert the electrode connector by fitting its groove with the connector socket pin of the instrum...

Страница 35: ...atched to the standard solution temperature only when the standard solution setting is NIST and USA However the function does not convert the pH value according to the temperature characteristics of e...

Страница 36: ...ration default NIST Set the standard solution used for calibration With this instrument you can choose from 3 types NIST USA and CUST the standard solution other than NIST and USA Set according to the...

Страница 37: ...5 C Standard solution type Description NIST Japanese specification Set to use the standard solution of the Japanese specification Standard solution icon USA USA specification Set to use the standard s...

Страница 38: ...a page 33 Deleting calibration data page 35 pH standard solution setting is NIST or USA This section describes the procedure for two point calibration of NIST pH 4 and 7 as a general calibration examp...

Страница 39: ...rent measured value display appears 8 Check that the pH value is stable while the pH electrode is immersed in the standard solution then press the key Stabilization judgment starts and the HOLD icon b...

Страница 40: ...ectrode status After calibration is complete the current pH electrode status is diagnosed from the calibration result Use this information for maintenance of the electrode Display Description Referenc...

Страница 41: ...solution filler port of the pH electrode If calibration is performed with the port closed the internal solution does not flow and the measurement value is not stabilized Make sure to keep the port ope...

Страница 42: ...issue paper 3 Open the internal solution filler port of the pH electrode If calibration is performed with the port closed the internal solution does not flow and the measurement value is not stabilize...

Страница 43: ...e at least 3 cm from the tip of the pH electrode 7 Press the key and enter the standard solution value for the second point 8 While the pH electrode is immersed in the standard solution press the key...

Страница 44: ...ctrode status is diagnosed from the calibration result Use this information for maintenance of the electrode Display Description Reference Both ERR No are not displayed Electrode sensitivity 93 to 100...

Страница 45: ...ation 3 Immerse at least 3 cm from the tip of the pH electrode in the sample solution In order to flow the internal solution into the sample solution immerse the liquid junction in the sample solution...

Страница 46: ...lt ATC Automatic temperature measurement function can be used by using combination electrode equipped with a temperature sensor or connecting a temperature compensation electrode When mV or ORP are me...

Страница 47: ...easurement and the relative value measurement Absolute value measurement mode The measured value of electromotive force is displayed Relative value measurement mode The measured value of electromotive...

Страница 48: ...unction in the sample solution surely 4 While the electrode is immersed in the sample solution press the key Stabilization judgment starts and the HOLD icon blinks When the value is stabilized the HOL...

Страница 49: ...latest inspection data 34 Deleting calibration data 35 Printing measured values and calibration data 36 Transferring saved data to a PC 39 Operating the instrument from an external device 40 Using th...

Страница 50: ...measurement mode except during the automatic hold measurement 1 While the data to save is displayed press the key to enter the data mode 2 Select IN data saving and press the key Saved data is displa...

Страница 51: ...n 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 Press the keys to change the measurement data and press the keys t...

Страница 52: ...setting mode 2 Press the keys to select the MAINT maintenance setting and then press the key 3 Press the keys to select the DATCLR delete saved data and then press the key 4 Select YES to delete the s...

Страница 53: ...the latest calibration data 1 Press the key to enter the data mode 2 Press the keys to select CAL pH or ION display calibration data and then press the key The electrode status based on the calibratio...

Страница 54: ...tion data and then press the key Displays the repeatability value the absolute value of the difference between the measured value and standard solution value Display Description Reference GOOD Electro...

Страница 55: ...ntenance setting and then press the key 3 Press the keys to select the CALCLR delete calibration data and then press the key 4 Select YES to delete the calibration data or select NO to cancel deleting...

Страница 56: ...w to display measurement data and calibration data refer to the respective section Displaying saved data page 31 Displaying the latest calibration and inspection data page 33 The format of the printou...

Страница 57: ...on calibration result Printout format Description Inst model D 72 Instrument model Suffix G is not printed Inst SN KL1TSE09 Instrument serial number Elect status GOOD Electrode status based on calibr...

Страница 58: ...2013 09 01 Calibration date Time 09 00 Calibration time pH 4 01 176 9 mV Measurement potential 25 0 C ATC Temperature value and temperature setting pH 6 86 7 6 mV Measurement potential 25 1 C ATC Tem...

Страница 59: ...D 70 refer to the FD 70 instruction manual which you can download from our website as well The required PC specifications and recommended PC specifications for using the FD 70 are shown in the followi...

Страница 60: ...urs and the online mode does not start up and as a result RS 232C communication cannot be performed Also when the transfer format is changed turn OFF the power of the instrument and PC and then reboot...

Страница 61: ...tomatic data save function the data saved until just before the batteries run out Replace the batteries and check the data 1 Press the key to enter the setting mode 2 Press the keys to select the AT L...

Страница 62: ...he 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 measurem...

Страница 63: ...the data is saved in the internal memory the ID number entered in this setting is saved together with the data 1 Press the key to enter the setting mode 2 Press the keys to select the ID ID number set...

Страница 64: ...th this function set an error is displayed immediately When the error is displayed performing calibration clears the error 1 Press the key to enter the setting mode 2 Press the keys to select the PERI...

Страница 65: ...3 Press the keys to select the MAINT maintenance setting and then press the key 4 Press the keys to select the TEMP temperature calibration setting and then press the key 5 Enter the set temperature a...

Страница 66: ...external device 1 Press the key to enter the setting mode 2 Press the keys to select the MAINT maintenance setting and then press the key 3 Press the keys to select the AT OFF automatic power off set...

Страница 67: ...r test printing As a result of test printing if the printout is as shown below the printer unit is operating correctly 1 Press the key to enter the setting mode 2 Press the keys to select the MAINT ma...

Страница 68: ...erature calibration data is also initialized 1 Press the key to enter the setting mode 2 Press the keys to select the MAINT maintenance setting and then press the key 3 Press the keys to select the IN...

Страница 69: ...ohol 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 it with such solu...

Страница 70: ...slow Store in a moist atmosphere Follow the steps below to properly store the electrode 1 Wash the electrode well with pure water or deionized water to remove sample completely and close the internal...

Страница 71: ...e water or deionized water Daily storage of the electrode If the electrode becomes dry the response will slow Store in a moist atmosphere Follow the steps below to properly store the electrode 1 Wash...

Страница 72: ...ectrode internal solution If the surface of the metal electrode is dirty wipe it gently with a soft material such as absorbent cotton moistened with alcohol or a neutral cleaning solution or immerse i...

Страница 73: ...potential does not stabilize within three minutes 0004 Asymmetric potential error The asymmetric potential of the electrode is out of the range of 45 mV 0005 Electrode sensitivity error The electrode...

Страница 74: ...ue without using the automatic hold function The electrode is dirty Clean the electrode The electrode is cracked Replace the electrode The responsive glass membrane of the electrode has been dry for a...

Страница 75: ...e electrode must be immersed up to the liquid junction As a guide immerse to at least 3 cm from the tip of the electrode There is a problem with the standard solution Use new standard solution Cause H...

Страница 76: ...performed for the set number of days of the calibration interval or longer Perform calibration The calibration interval alarm is ON and calibration has not been performed Perform calibration Cause How...

Страница 77: ...ion of the reference electrode until it is higher than the level of the sample Cause How to solve problem There is a motor or other device causing electrical interference Measure at a place where no i...

Страница 78: ...ortant to select an electrode that is appropriate for the sample Consult your dealer To confirm an electrode that is appropriate for the sample check the pH electrode selection guide in our catalogue...

Страница 79: ...ough to cover liquid junction The electrode must be immersed up to the liquid junction As a guide immerse to at least 3 cm from the tip of the electrode The electrode cable is broken Replace the elect...

Страница 80: ...nish the internal solution of the reference electrode until it is higher than the level of the sample Cause How to solve problem Power is not supplied Insert batteries or connect the AC adapter option...

Страница 81: ...t to full screen display Follow the steps below to check the display 1 Press the key to enter the setting mode 2 Press the keys to select the MAINT maintenance setting and then press the key 3 Press t...

Страница 82: ...M E M O...

Страница 83: ...relative humidity no condensation Power AAA alkaline batteries LR03 or AAA Ni MH rechargeable batteries 2 AC adapter 100 V to 240 V 50 60 Hz 0 37 A option Dimensions Approx 67 80 28 42 170 mm The fig...

Страница 84: ...anual MTC Automatic ATC Temperature input value 0 0 C to 100 0 C 25 0 C Auto power off ON OFF OFF Auto power off time 1 min to 30 min 30 min Sample ID 000 to 2999 000 Auto data memory ON OFF OFF Auto...

Страница 85: ...of electromotive force The liquid inside the glass electrode usually has a pH 7 If one measures the electromotive force generated at the electrode membrane the pH of the sample can be found by calcul...

Страница 86: ...2 Saturated calcium hydroxide solution 0 1 666 4 003 6 984 9 464 13 423 5 1 668 3 999 6 951 9 395 13 207 10 1 670 3 998 6 923 9 332 13 003 15 1 672 3 999 6 900 9 276 12 810 20 1 675 4 002 6 881 9 225...

Страница 87: ...solution can only be determined by equation What is important here is that ORP is determined by the ratio of activity between the oxidant Fe3 and the reductant Fe2 using the equation aFe2 aFe3 In act...

Страница 88: ...e 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 By registering as a user you can d...

Страница 89: ...Part name Part number Remarks AC adapter 3200647413 With 6 plug adapters Plain paper printer Printer USA 120 V 3014030146 Printer cable sold separately Printer EU 230 V 3014030147 Printer cable 301403...

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Страница 91: ...t jp For any questions regarding this product please contact your local agency or inquire from the following website http global horiba com contact_e index htm 31 Miyanonishi cho Kisshoin Minami ku Ky...

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