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horiba LAQUA F-71G, Instruction Manual

The Horiba LAQUA F-71G is a high-quality pH meter perfect for various applications. For detailed guidance on how to use this device effectively, be sure to download the Instruction Manual for free from our website. Ensure accurate results with a comprehensive manual for your convenience.

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Instruction Manual

pH METER  ( F-71G )

Summary of Contents for LAQUA F-71G

Page 1: ...Instruction Manual pH METER F 71G...

Page 2: ......

Page 3: ...herein 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 L...

Page 4: ...ate measures The crossed out wheeled bin symbol with underbar shown on the product or accompanying documents indicates the product requires appropriate treatment collection and recycle for waste elect...

Page 5: ...part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates us...

Page 6: ...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...

Page 7: ...ordance 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 st...

Page 8: ...striellen Umgebung k nnen die elektromagnetischen St rungen eventuell zu Produktfehlfunktionen f hren Um dieses Produkt unter solchen Umst nden verwenden zu k nnen muss der Benutzer ggf angemessene Ma...

Page 9: ...con u pour l environnement suivant tel que d fini dans la norme EN61010 1 Cat gorie de surtension II Degr de pollution 2 ITA Informazioni sulla sicurezza Leggere attentamente questo manuale prima di u...

Page 10: ...ukten r utformad f r anv ndning i f ljande milj er i enlighet med SS EN 61010 1 versp nningskategori II F roreningsgrad 2 SPA Informaci n de seguridad Aseg rese de leer este manual antes de utilizar e...

Page 11: ...zaradcze Produkt jest przeznaczony do u ycia w poni szym rodowisku zdefinio wanym w normie EN61010 1 Kategoria przepi ciowa II Stopie zanieczyszczenia 2 NLD Veiligheidsinformatie Lees deze handleidin...

Page 12: ...For Your Safety X JPN EN61326 1 EN61010 1 II 2...

Page 13: ...and it may result in an ignition or a fire Fire or electric shock Do not bundle the power supply cord during use Do not damage the power supply cord nor apply an excessive load to it such as bending a...

Page 14: ...For Your Safety XII Do not use the cable of serial communication USB or AC adapter under wet or humid conditions Otherwise it may cause a fire electric shock or breakage CAUTION...

Page 15: ...pull at the cable it may cause a breakage The touch panel is capacitance type Make sure to turn OFF the power before cleaning the panel If you wipe it with the power ON it may cause instrument malfunc...

Page 16: ...ssary 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 langu...

Page 17: ...1 2 Electrode connection 12 3 1 3 Connecting the power source 13 3 1 4 Connecting and setting the printer 14 3 1 5 Connecting the personal computer 15 3 2 Settings 16 3 2 1 pH standard solution settin...

Page 18: ...3 5 6 pH check history display 60 3 5 7 pH check data printing 61 Chapter 4 Maintenance and Troubleshooting 62 4 1 pH ORP electrode maintenance 62 4 2 Troubleshooting 66 4 2 1 Error message chart 66 4...

Page 19: ...zed for laboratory measurement and allows you to measure pH and ORP It provides a comfortable measurement environment with the design easy to wipe clean without roughness on the surface and the free s...

Page 20: ...Chapter 2 Information of F 71G 2 1 Measurement items 2 Chapter 2 Information of F 71G 2 1 Measurement items pH ORP mV Temperature...

Page 21: ...y an electrode contact our representatives in your region Product Quantity Main unit 1 Electrode stand 1 Instruction Manual 1 Quick Manual 1 AC adapter 1 Rubber cover 1 The AC adapter includes 6 plug...

Page 22: ...ames and functions 4 2 3 Names and functions 2 3 1 Names of each part Stand arm Stand base Operation key Stopper Display CH1 reference electrode CH1 measurement electrode CH1 temperature electrode AC...

Page 23: ...rument Third number from the left in the MFG No indicates manufacturing year Forth alphabet from the left in the MFG No indicates manufacturing month The alphabet is assigned to month according to the...

Page 24: ...2 3 Names and functions 6 2 3 3 Display HOLD Calibration Measuring Error No Data No Date Setting mode Measurement Temperature USB icon Data memory icon Printer connecting icon Electrode status icon i...

Page 25: ...MEAS key Starts stops measurement or enters the mea surement mode Applies the setting values of the setting mode DATA key Enters the data operation mode Printouts calibration value SET key Enters the...

Page 26: ...Chapter 2 Information of F 71G 2 4 Measurement MEAS flow chart 8 2 4 Measurement MEAS flow chart pH measurement MODE key ORP measurement mV MODE key ORP measurement Relative mV CAL key...

Page 27: ...MTC Automatic data memory setting key ON OFF pH calibration interval setting key ON OFF Sample ID setting key Automatic printout setting key ON OFF Maintenance key LCD Check Printer Test Auto Power Of...

Page 28: ...Chapter 2 Information of F 71G 2 6 Data DATA flow chart 10 2 6 Data DATA flow chart Data memory key Data display key pH calibration data key pH check data key...

Page 29: ...paration 11 Chapter 3 Basic Operation 3 1 Preparation 3 1 1 Assembling the electrode stand 1 Attach the stand shaft to the stand base 2 Attach the stopper and the stand arm to the stand shaft Stand ba...

Page 30: ...trode plug by fitting it with the socket pin of the instrument If the pin and groove are misaligned do not insert the plug with force 2 Turn the electrode connector to the right along the groove to pl...

Page 31: ...the jack socket on the instrument If the temperature connector is unconnected or the connection is wrong the MTC set temperature is displayed as the sample temperature 3 1 3 Connecting the power sour...

Page 32: ...20 V plain paper type Parts No 3014030146 CITIZEN CBM 910 24RJ230 V plain paper type Parts No 3014030147 Optional printer cable Parts No 3014030148 is required Make sure to use an appropriate cable fo...

Page 33: ...ter Use proprietary cables to connect with a personal computer Proprietary cable Parts name USB cable 1 m Parts No 3200373941 Make sure that the transfer formats of the measuring instrument and person...

Page 34: ...SET key during setting or after pressing the ENTER key the settings are cancelled 3 2 1 pH standard solution setting There are 3 type settings of standard solutions used for calibration NIST USA and...

Page 35: ...ication pH6 865 at 25 C US specification pH7 000 at 25 C When you use NIST standard solution for calibration make sure to set NIST here NIST specification NIST When using a standard solution of interi...

Page 36: ...ment screen and press the key to enter the temperature compensation function setting screen 2 Press the ENTER key to enter the temperature compensation function change screen 3 Press the or key to cha...

Page 37: ...When the temperature sensor is connected the current tempera ture of the solutions is displayed automatically If the sensor is not connected the set value for MTC default 25 C is displayed MTC In Man...

Page 38: ...urement screen and press the or key to enter the auto data memory setting screen 2 Press the ENTER key to enter the auto data memory change screen 3 Press the or key to change ON or OFF and press the...

Page 39: ...t interval days elapses after the previous calibration ERROR No 0008 Calibration cycle error is displayed 1 Press the SET key on the measurement screen and press the or key to enter the pH calibra tio...

Page 40: ...Chapter 3 Basic Operation 3 2 Settings 22 4 If you select ON press the or key to select a digit and press the or key to change the value and then press the ENTER key Setting range 1 to 999 days...

Page 41: ...at the data memory and it allows you to search data easily 1 Press the SET key on the measurement screen and press the or key to enter the sample ID setting screen 2 Press the ENTER key to enter the s...

Page 42: ...cuted at the following occasions Data memory is performed during measurement Calibration or check is completed in the calibration mode 1 Press the SET key on the measurement screen and press the or ke...

Page 43: ...n good conditions LCD check You can check the LCD 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter the maintenance item...

Page 44: ...on and printout operation 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter the maintenance item selecting screen 3 Pres...

Page 45: ...et ON OFF of the auto power off function When this function is ON and no key operations are performed for the set period the instrument is powered OFF automatically 1 Press the SET key on the measurem...

Page 46: ...ress the ENTER key to enter the auto power off change screen 5 Press the or key to change ON or OFF and press the ENTER key 6 Press the or key to select a digit and press the or key to change the valu...

Page 47: ...SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter the maintenance item selecting screen 3 Press the or key to enter the date settin...

Page 48: ...key to change the value for hour and minute setting and press the ENTER key to return to the date setting screen Memory data clearing You can delete the memory data of the instrument This operation is...

Page 49: ...Press the or key to enter the memory data clear screen 4 Press the ENTER key to enter the memory data clear Yes No screen 5 Press the or key to select Yes and press ENTER key to delete the memory data...

Page 50: ...ata of pH to initialize this Note that this operation is irreversible 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter...

Page 51: ...screen 5 Press the ENTER key to enter the calibration data deleting Yes No screen Case of pH 6 Press the or key to select Yes and press ENTER key to delete the calibration data When the deletion is co...

Page 52: ...up to 999 data 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter the maintenance item selecting screen 3 Press the or ke...

Page 53: ...libration of the temperature sensor of an electrode 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter the maintenance it...

Page 54: ...e ENTER key to return to the temperature calibra tion screen Setting initialization The settings are initialized Refer to 5 2 Default settings P 79 for default settings 1 Press the SET key on the meas...

Page 55: ...et tings screen 4 Press the ENTER key to enter the initializing set tings Yes No screen 5 Press the or key to select Yes and press ENTER key to initialize the settings The initializing is complete whe...

Page 56: ...r operating acci dentally to change settings delete memory data etc 1 Press the SET key on the measurement screen and press the or key to enter the maintenance screen 2 Press the ENTER key to enter th...

Page 57: ...t and press the or key to change the value and then press the ENTER key and press the ENTER key to return to the password change screen Setting range 0000 to 9999 If this setting is ON password entry...

Page 58: ...It is possible to calibrate pH2 pH4 pH7 pH9 and pH12 using NIST standard solutions In this manual an example of 2 points calibration with the standard solutions of pH7 and pH4 which are used generally...

Page 59: ...The HOLD indicator blinks until the reading stabilizes When the reading stabilizes the HOLD indicator lights up and the reading is held The mark which means that the pH7 calibration is completed is d...

Page 60: ...which means that the pH4 calibration is completed is displayed on the screen 9 To perform repeatability check of the calibration immerse the pH electrode in the standard solution of pH7 and press the...

Page 61: ...l lowed by ones of pH4 but you can perform calibration in an order as you like 1 Prepare the pH electrode Wash the pH electrode with pure water deionized and wipe it off by filter paper or tissue pape...

Page 62: ...e HOLD indicator blinks until the reading stabilizes When the reading stabilizes the HOLD indicator lights up and the reading is held The mark which means that the pH7 calibration is completed is disp...

Page 63: ...o perform repeatability check of the calibration immerse the pH electrode in the standard solution of pH7 and press the Enter key twice The measurement value of the pH7 standard solu tion is displayed...

Page 64: ...alibration the filler port should be kept open 3 Immerse the pH electrode in the desired standard solution to calibrate the first point Display Description ERR No display Good condition Electrode sens...

Page 65: ...ilizes the HOLD indicator lights up and the reading is held The mark which means that the first point calibration is completed is displayed on the screen To stop calibration Press the CAL key while th...

Page 66: ...nks until the reading stabilizes When the reading stabilizes the HOLD indicator lights up and the reading is held The mark which means that the second point calibration is completed is displayed on th...

Page 67: ...tings and that the printer is connected correctly Refer to 3 1 4 Connecting and setting the printer P 14 2 Press the DATA key during calibration HOLD or calibration error The currently displayed data...

Page 68: ...antaneous measurement and the HOLD indicator blinks Then when the value is stable the HOLD indicator lights up and the value is held To cancel the HOLD state or to stop the stability judgment HOLD bli...

Page 69: ...o 3 2 3 Auto data memory setting P 20 for the setting operations If the auto power off setting is ON it is temporarily OFF while this function is active 1 After the interval setting is completed press...

Page 70: ...of memory data exceeds 999 data memory is stopped and ERROR No 0010 is displayed 3 4 4 Measurement value printing You can print out measurement values or the HOLD value When the automatic printout set...

Page 71: ...ompensation setting At Manual mode MTC At Auto mode ATC Sample ID Instrument model Serial number Electrode status Asymmetry potential Sensitivity mV status Absolute mV ABS Relative mV REL HOLD conditi...

Page 72: ...stored into the instrument memory Refer to 3 4 3 Auto data memory P 51 for automatic data memory 1 Press the DATA key to enter the data operation screen 2 Press the ENTER key to enter the data memory...

Page 73: ...can be displayed on the screen 1 Press the DATA key to enter the data operation mode 2 Press the or key to enter the memory data dis play screen 3 The latest data is displayed 4 Press the or key to s...

Page 74: ...ed measurement data is printed out pH measurement mode mV measurement mode Memory number Sample ID HOLD condition At HOLD AUTO Instant value INST Temperature compensation setting At Manual mode MTC At...

Page 75: ...isplay 1 Press the DATA key to enter the data operation screen 2 Press the or key to enter the calibration history display screen 3 Press the ENTER key The asymmetry potential of the latest calibratio...

Page 76: ...story can be printed out for each measurement item 1 Check the printer settings and that the printer is connected correctly Refer to 3 1 4 Connecting and setting the printer P 14 2 Refer to 3 5 4 Cali...

Page 77: ...r 3 Basic Operation 3 5 Data operation 59 pH calibration history with check data Instrument model Serial number Electrode status Asymmetry potential Sensitivity Check value of repeatability Calibratio...

Page 78: ...he ENTER key to perform the repeatability check of calibration It is necessary to calibrate the standard solution of pH7 in NIST or USA of the standard solution setting This operation is valid only on...

Page 79: ...the is con nection are correctly Refer to 3 1 4 Connecting and setting the printer P 14 2 Display the memory data referring to 3 5 6 pH check history display P 60 3 Press the ENTER key The displayed m...

Page 80: ...roneous measurements This instrument is equipped with a convenient error message function If an error message appears be sure to take appropriate countermeasures 4 1 pH ORP electrode maintenance Maint...

Page 81: ...rocedure Also exchange the internal solution every 3 to 6 months using the steps explained below 1 Disconnect the electrode from the instrument 2 Detach the protective cap from the electrode 3 Open th...

Page 82: ...ed and wipe it with filter or tissue paper 6 If the inside of the protective cap is dry wash the inside with pure water deionized After shaking out the water fill the cap with enough pure water deioni...

Page 83: ...ode is so dirty that it cannot be cleaned by rinsing with pure water deionized wash the electrode using the methods below depending on the dirt General dirt oily grime Wipe the dirt grime off using co...

Page 84: ...able reading ERROR The electric potential does not stabilize within three minutes 0004 Zero calibration ERROR The asymmetry potential of the electrode is outside the range of 45 mV 0005 Span calibrati...

Page 85: ...countermeasure is performed contact our representatives in your region The internal IC is defective Contact our representatives in your region Cause Countermeasure This is caused by the effect of the...

Page 86: ...re Cause Countermeasure The electrode is dirty Wash the electrode The electrode is cracked Replace the electrode The standard solu tion concentration is fluctuating Replace the internal solution in th...

Page 87: ...e is dirty Wash the electrode The electrode is cracked Replace the electrode Calibration was not performed correctly Redo the calibration correctly There is a problem with the standard solution Prepar...

Page 88: ...problem with the standard solution Prepare new standard solution There is a problem with the standard solution setting Match the regulation type NIST USA of standard solutions between the settings an...

Page 89: ...measure There is a problem with the printer unit connection Check the printer connection and con nect the instrument and printer again The printer is defective Replace the printer If the same error oc...

Page 90: ...e membrane is dam aged or worn out Replace the electrode There are air bub bles on the elec trode Shake the electrode to remove the air bubbles There is no stan dard solution remaining Fill the electr...

Page 91: ...ng with a stable stan dard solution Contact our representatives in your region Cause Countermeasure Caused by the effects of the sam ple Response time may slow down depend ing on the properties of the...

Page 92: ...s the ON OFF key 10 seconds later If the same error occurs again seek repairs at contact our representatives in your region The electrode con nector is not attached correctly Turn the power OFF then t...

Page 93: ...e sample is inappropriate Use a sample within the measurement range The liquid junction is not immersed in the sample Immerse the electrode up to 3 cm from its tip The electrode cable is broken Replac...

Page 94: ...temperature Adjust it within the measurement range The internal therm istor connection of the electrode is broken or shorted Check the resistance of the temperature sensor connector If it is 50 k or m...

Page 95: ...ding to the manual is it done correctly Is the test print done correctly when it is made according to the manual Cause Countermeasure The effects of the sample The pH or other properties of the sample...

Page 96: ...tion pH METER Measuring object Item Description pH Measuring principle Glass electrode Display range pH 2 000 to pH19 999 Measuring range pH0 000 to pH14 000 Display resolution 0 001 pH Repeatability...

Page 97: ...ettings Item Description Default value Common settings Temperature compensation Automatic temperature compensation ATC Manual temperature compensation value 25 C Auto power off OFF Sample ID 0000 Cali...

Page 98: ...200647413 With 6 plug adapters Plain paper printer Printer USA 120 V 3014030146 Printer cable sold separately Printer EU 230 V 3014030147 Printer cable 3014030148 1 5 m Roll paper 3014030149 20 rolls...

Page 99: ...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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