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Chapter 4 Maintenance and Troubleshooting

4.4 Troubleshooting

F-74BW

107

4.4.2 More Troubleshooting

This section describes the countermeasures for the
troubles that are not indicated by ERROR messages.

●

The indicated value fluctuates

When there is a problem with the electrode.

When there is a problem with the instrument

Cause

Countermeasure

The responsive
membrane is dry or
dirty.

Wash the responsive membrane.

The responsive
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 electrode with new standard solu-
tion, as noted in the electrode
operation manual.

The wrong stan-
dard solution is
being used.

Use the correct standard solution.

Cause

Countermeasure

There is a motor or
other device caus-
ing electrical inter-
ference.

Measure at a place where no influence
from induction is given.
Ground all AC-powered equipment

The electrode is
not connected cor-
rectly.

Connect the electrode correctly.

Содержание F-74BW

Страница 1: ...Instruction Manual pH ION COND METER F 74BW...

Страница 2: ...tion attributable to repair or modification by any person not authorized by HORIBA Ltd Any malfunction or damage attributable to the use in an environment not specified in this manual Any malfunction...

Страница 3: ...ymbol with underbar shown on the product or accompanying documents indicates the product requires appropriate treatment collection and recycle for waste electrical and electronic equipment WEEE under...

Страница 4: ...ese limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio fre...

Страница 5: ...is to be limited to the most extreme situations This indicates a potentially hazardous situation which if not avoided could result in death or serious injury This indicates a potentially hazardous si...

Страница 6: ...als Some ion electrodes are used with hazardous standard solutions Handle them with care If the internal solution comes in contact with the skin wash it off immediately If it gets into eyes flush with...

Страница 7: ...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 malfunction RS...

Страница 8: ...ual This interprets the necessary points for correct operation and notifies the important points for handling the instrument This indicates the part of where to refer the informatione This indicates r...

Страница 9: ...hart 10 Chapter 3 Basic Operation 11 3 1 Preparation 11 3 1 1 Assembling the Electrode Stand 11 3 1 2 Electrode Connection 12 3 1 3 Connecting the Power Source 13 3 1 4 Connecting and Setting the Prin...

Страница 10: ...ment Items Changing 72 3 4 3 Auto Data Memory 73 3 4 4 Measurement Value Printing 74 3 5 Data Operation 78 3 5 1 Data Memory of Measurement Value 78 3 5 2 Memory Data Display 79 3 5 3 Memory Data Prin...

Страница 11: ...CONTENTS IX Chapter 5 Specifications 113 5 1 Specifications 113 5 2 Default Settings 116 5 3 Options 117...

Страница 12: ......

Страница 13: ...for laboratory measurement and allows you to measure pH ORP ION conductivity resistivility salinity and TDS It provides a comfortable measurement environment with the design easy to wipe clean withou...

Страница 14: ...ion of the F 74BW 2 1 Measurement Items 2 HORIBA Chapter 2 Information of the F 74BW 2 1 Measurement Items Measurement item F 74BW pH ORP mV Ion Conductivity Salinity Resistivity TDS Total Dissolved S...

Страница 15: ...BW s package includes the following Electrodes are required for the measurement in addition to this package If you want to buy an electrode contact HORIBA sales representative Product Quantity Main un...

Страница 16: ...nd 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 CH2 reference electrode CH2 measure...

Страница 17: ...3 2 Display Connector for USB communication with a personal computer Active mode Setting mode Error No Data No Date HOLD indicator Measuring parameter Calibration status Electrode status icon Printer...

Страница 18: ...on mode MEAS key Starts stops measurement or enters the measurement mode Applies the setting values of the setting mode DATA key Enters the data operation mode Printouts calibration value SET key Ente...

Страница 19: ...4 Measurement MEAS Flow Chart 2 4 1 CH1 2 4 2 CH2 pH measurement MODE key ORP measurement mV MODE key MODE key ION measurement mV ORP measurement relative mV CAL key COND measurement MODE key Resistiv...

Страница 20: ...ory setting key ON OFF pH calibration interval setting key ON OFF Sample ID setting key Automatic printout setting key ON OFF Maintenance LCD Check Printer Test Auto Power Off Set tings Day and Time S...

Страница 21: ...0 1 1 10 cm Input range 0 700 to 1 300 Salinity unit setting PPT key Temperature compensation function setting ATC MTC key Automatic data memory setting key ON OFF key Sample ID setting Automatic prin...

Страница 22: ...Chapter 2 Information of the F 74BW 2 6 Data DATA Flow Chart 10 HORIBA 2 6 Data DATA Flow Chart Ion calibration data key Data memory key Data display key pH calibration data key pH check data key...

Страница 23: ...ation F 74BW 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 Stan...

Страница 24: ...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 plug the connector CH1 reference ele...

Страница 25: ...Insert the temperature connector into 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 tempe...

Страница 26: ...nt The following printer is possible Printer CITIZEN CBM 910 24RJ120 V plain paper type Parts No 3014030146 CITIZEN CBM 910 24RJ230 V plain paper type Parts No 3014030147 Optional printer cable Parts...

Страница 27: ...omputer 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 pe...

Страница 28: ...the 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 a...

Страница 29: ...ecification 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 in...

Страница 30: ...the SET key on the measurement 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 scree...

Страница 31: ...ture 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...

Страница 32: ...ss the SET key on the measurement 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 chang...

Страница 33: ...cycle error is displayed This setting is possible only for CH1 1 Press the SET key on the measurement screen to enter the pH calibration interval setting screen 2 Press the ENTER key to enter the cali...

Страница 34: ...and it allows you to search data easily This setting applies for both of CH1 and CH2 1 Press the SET key on the measurement screen and press the or key to enter the sample ID setting screen 2 Press th...

Страница 35: ...n and measurement you can not obtain correct measurement results When you change the unit setting perform calibration again This setting is possible only for CH1 1 Press the SET key on the measurement...

Страница 36: ...nd measurement you can not obtain correct measurement results When you change the ion valency setting perform calibration again This setting is possible only for CH1 1 Press the SET key on the measure...

Страница 37: ...cm When mS cm is selected the unit is fixed to mS cm This setting is possible only for CH2 1 Press the SET key on the measurement screen and press the or key to enter the conductivity unit setting sc...

Страница 38: ...lt is 2 00 This setting is possible only for CH2 1 Press the SET key on the measurement screen and press the or key to enter the conductivity unit setting screen 2 Press the ENTER key to enter the con...

Страница 39: ...label of the electrode This setting is possible only for CH2 1 Press the SET key on the measurement screen and press the or key to enter the conductivity cell constant setting screen 2 Press the ENTE...

Страница 40: ...1 300 3 2 11 Salinity Unit Setting You can select the unit of salinity measurement between PPT and This setting is possible only for CH2 1 Press the SET key on the measurement screen and press the or...

Страница 41: ...wing occasions You perform data memory during measurement Calibration or check is completed in the calibration mode This setting applies for both of CH1 and CH2 1 Press the SET key on the measurement...

Страница 42: ...nt in 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...

Страница 43: ...ction 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 P...

Страница 44: ...an set 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 meas...

Страница 45: ...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 value and th...

Страница 46: ...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 key to enter the date se...

Страница 47: ...or 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...

Страница 48: ...n 3 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...

Страница 49: ...on conductivity and salinity to initialize them 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...

Страница 50: ...nt item to be deleted 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...

Страница 51: ...re 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...

Страница 52: ...screen Temperature Calibration You can perform calibration of the temperature sensor of an electrode This setting is possible for both CH1 and the CH2 1 Press the SET key on the measurement screen and...

Страница 53: ...nter the temperature cali bration screen 4 Press the ENTER key to enter the temperature dis play value change screen 5 Press the or key to select a digit and press the or key to change the value and t...

Страница 54: ...P 116 for default settings 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 Pr...

Страница 55: ...R key to return to the initializing set tings screen Password Setting This function prevents an unauthorized person from tampering the date of measurement data or operating accidentally to change sett...

Страница 56: ...he ENTER key 6 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 and press the ENTER key to return to the password change screen...

Страница 57: ...ion 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 gener...

Страница 58: ...lue to be stable and press the CAL key 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...

Страница 59: ...ark which means that the pH4 calibration is completed is displayed on the screen 10 To perform repeatability check of the calibration immerse the pH electrode in the standard solution of pH7 and press...

Страница 60: ...fol 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 pa...

Страница 61: ...n the measurement screen is displayed to light up ACT for CH1 5 Press the CAL key to enter the USA calibration screen 6 Check the stable indication value and press the CAL key The HOLD indicator blink...

Страница 62: ...LD indicator lights up and the reading is held The mark which means that the pH4 calibration is completed is displayed on the screen 10 To perform repeatability check of the calibration immerse the pH...

Страница 63: ...libration 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 sensi...

Страница 64: ...f the desired standard solution 7 Check the stable indication value and press the CAL key The HOLD indicator blinks until the reading stabilizes When the reading stabilizes the HOLD indicator lights u...

Страница 65: ...AL key to display the instantaneous value Wait for the instantaneous value to be stable and press the CAL key The HOLD indicator blinks until the reading stabilizes When the reading stabilizes the HOL...

Страница 66: ...u to make accurate measurement 2 pH effect of sample The applicable pH range depends on the type and structure of the ion electrode Check that the pH of each sample is within the applicable range If t...

Страница 67: ...480 Cmol 1 R General gas constant 8 314 JK 1 mol 1 T Absolute temperature K n Ion charge Activity coefficient C Ion concentration mol L The above formula is called Nernst s equation and is the basis f...

Страница 68: ...n meter that has an antilog calculation function or the creation of a calibration curve using semilog graph paper Calibration curve for univalent positive ion electrode Potential mV Potential slope Io...

Страница 69: ...erfering ion contact HORIBA sales representative When coexistence limit value measurement ion concentration is larger than coexistence ion concentration the effect of the interfering ion becomes small...

Страница 70: ...l 250 g L potassium chloride 8002 10C Chloride Cl 0 4 mg L to 35000 mg L Cl 1 to 10 5 mol L Cl pH3 to pH11 350 mg L Cl 59 mV 0 C to 50 C NO3 F HCO3 SO4 2 PO4 2 1000 SCN 0 3 MnO4 0 1 Br 0 03 S2O3 2 S2...

Страница 71: ...2 NH4 10000 Ni2 1000 Cr3 Fe2 100 Fe3 1 Pb2 0 1 Cu2 Hg2 Ag2 Not applicable 2060A 10T 2565A 10T 3 33 mol L KCl 250 g L potassium chloride 8008 10C Lead Pb2 2 0 mg L to 20000 mg L Pb2 10 1 to 10 5 mol L...

Страница 72: ...forming acidic or basic gases in alkali solutions of pH12 or higher volatile amines etc Because of the combination type ion electrode the reference electrode is not reqiured Glass 1512A 10C Sodium Na...

Страница 73: ...10C Calcium Ca2 0 40 mg L to 40080 mg L Ca2 1 to 10 5 mol L Ca2 pH5 to pH11 4 0 mg L Ca2 29 mV 0 C to 50 C Na K Ba NH4 more than 1000 Mg2 1000 Mn2 500 Co2 350 Ni2 Cu2 70 Sr2 50 Fe2 Zn2 1 Fe3 0 1 At 10...

Страница 74: ...odel and ion type Applica ble chip electrode type quantity Measurable range pH allowable range 1 Electric potential slope 2 Interfering ions and allowable limit for their coexistence 3 Reference elect...

Страница 75: ...types are not limited to the solutions listed in the table You may use other internal liquid so far as you have determined that its bleeding rarely interferes or affects the electric potential at the...

Страница 76: ...Press the or key on the measurement screen to light up ACT for CH1 5 Press the MODE key on the measurement screen to enter the ion measurement screen 6 Press the CAL key on the ion measurement screen...

Страница 77: ...L key on the ion measurement screen to enter the calibration screen 12 Press the or key to select digit and press the or key to change value to set the value of the desired standard solution 13 Press...

Страница 78: ...current electrode 1 Prepare the potassium chloride standard solution Refer to JIS K 0400 for the preparative method 2 Wash the electrode with pure water deionized and wipe it off by filter paper or ti...

Страница 79: ...screen 3 3 4 Salinity Calibration You can perform 1 point calibration using a salinity stan dard solution 1 Prepare the electrode Wash the electrode with pure water deionized and wipe it off by filte...

Страница 80: ...the value of the desired standard solution 7 Check the stable indication value and press the CAL key The HOLD indicator blinks until the reading stabilizes When the reading stabilizes the HOLD indica...

Страница 81: ...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 is printed out Printing examples are shown below Printing a...

Страница 82: ...n 3 3 Calibration 70 HORIBA Printing at COND calibration Printing at salinity calibration Instrument model Serial number Cell constant Calibration data Instrument model Serial number Calibration coeff...

Страница 83: ...links 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 blinking press the MEAS key again Stabilization C...

Страница 84: ...essed measurement item can be changed in the channel where ACT is lit CH1 CH2 pH measurement ORP measurement mV MODE key MODE key ION measurement mV ORP measurement relative mV CAL key MODE key COND m...

Страница 85: ...Auto LOG is displayed on the screen 2 Press the ENTER key Auto LOGGING is displayed on the screen and the auto data memory function starts 3 To stop the auto data memory press the ENTER key Do not pow...

Страница 86: ...d in the calibration mode 1 Check that the printer settings and connection are correctly Refer to 3 1 4 Connecting and Setting the Printer P 14 2 Press the key in the measurement mode or HOLD state Th...

Страница 87: ...At HOLD AUTO Instant value INST Temperature compensation setting At Manual mode MTC At Auto mode ATC Sample ID Instrument model Serial number HOLD condition At HOLD AUTO Instant value INST Temperatur...

Страница 88: ...Temperature compensation setting At Manual mode MTC At Auto mode ATC Sample ID Instrument model Serial number Cell constant Temperature coefficient HOLD condition At HOLD AUTO Instant value INST Temp...

Страница 89: ...stant value INST Temperature compensation setting At Manual mode MTC At Auto mode ATC Sample ID Instrument model Serial number Temperature coefficient HOLD condition At HOLD AUTO Instant value INST Te...

Страница 90: ...be stored into the instrument memory Refer to 3 4 3 Auto Data Memory P 73 for automatic data memory 1 Press the DATA key to enter the data operation screen 2 Press the ENTER key to enter the data memo...

Страница 91: ...ata 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 t...

Страница 92: ...memory data referring to 3 5 2 Memory Data Display P 79 2 Press the ENTER key The displayed measurement data is printed out pH measurement mode Memory number HOLD condition At HOLD AUTO Instant value...

Страница 93: ...REL HOLD condition At HOLD AUTO Instant value INST Temperature compensation setting At Manual mode MTC At Auto mode ATC Sample ID Instrument model Serial number Memory number HOLD condition At HOLD AU...

Страница 94: ...y display 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 calibra...

Страница 95: ...Good When the sensitivity is 85 to 90 bAd is displayed Refer to Electrode status P 48 ION calibration history display 1 Press the DATA key to enter the data operation mode 2 Press the or key to enter...

Страница 96: ...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 Calibration History Display P 82 to d...

Страница 97: ...history with check data ION calibration history Instrument model Serial number Electrode state Asymmetry potential Sensitivity Check value of repeatability Calibration data Instrument model Serial nu...

Страница 98: ...Display The pH check history can be printed out Calibration Repeatability check 1 Press the DATA key to enter the data operation screen 2 Press the or key to enter the pH check history display screen...

Страница 99: ...hat 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 86 3 Press the ENTER key The display...

Страница 100: ...d erroneous 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 M...

Страница 101: ...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...

Страница 102: ...onized 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 de...

Страница 103: ...lectrode is so dirty that it cannot be cleaned by rinsing with pure water deionized wash the electrode using the methods below depending the dirt General dirt oily grime Wipe the dirt grime off using...

Страница 104: ...the ion electrodes listed in the above table are describes below Ion to be measured Ion type Slope Measurement range Elect rode model Compati ble tip model Internal solution Potassium K 1 58 mV 0 04...

Страница 105: ...rd solution Approx 10 min F ion electrode Deionized water Approx 10 min NO3 ion electrode 1 mol L potassium nitrate solution 100 g L KNO3 2 h to 3 h K ion electrode 0 1 mol L potassium chloride soluti...

Страница 106: ...or many hours the inter nal solution in the electrode outer tube may be contaminated with samples or diluted with water Replace the internal solution in the electrode outer tube once a week or once a...

Страница 107: ...ee times to let the internal solution seep out through the liquid junction Filling internal solution inner tube The inner tube of the electrode is of an air tight structure that allows almost no outfl...

Страница 108: ...nal solution using a dropper 3 Screw the electrode cap by hand and pull it 5 cm to 10 cm toward the electrode connector side 4 Hold the electrode cap and push to stand the electrode vertically on a de...

Страница 109: ...ealed 4 Return the spring to the top of body 1 5 Hold the rubber sleeve in place by hand then twist the electrode protective cap at 90 and fit the rubber sleeve into the electrode protective cap 6 Adj...

Страница 110: ...ORIBA Cable Connector cover Electrode connector O ring Silicon tube Rubber seal of internal solution filler port internal cylinder Body 1 Rubber cap Rubber seal of internal solution filler port extern...

Страница 111: ...long period of time store it after performing the following procedures Also perform the maintenance of the electrode every 3 to 6 months 1 Disconnect the electrode from the instrument 2 Use pure wate...

Страница 112: ...s not stabilize within three minutes 0004 Zero calibration ERROR The asymmetry potential of the electrode is outside the range of 45 mV 0005 Span calibration ERROR pH The electrode sensitivity is not...

Страница 113: ...after the countermeasure is performed contact HORIBA sales representative The internal IC is defective Contact HORIBA sales representative Cause Countermeasure This is caused by the effect of the sam...

Страница 114: ...easure 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 i...

Страница 115: ...trode 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 Pr...

Страница 116: ...is a 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 setting...

Страница 117: ...memory over Definition The number of the memory data exceeds the limit of the memory Cause Countermeasure There is a problem with the printer unit connection Check the printer connection and con nect...

Страница 118: ...ition Key operation is invalid Cause Countermeasure COND electrode is at the end of the useful life Replace the electrode Improper standard solution Prepare new standard solution Cause Countermeasure...

Страница 119: ...sponsive 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...

Страница 120: ...udge by measuring with a stable stan dard solution Contact HORIBA sales representative Cause Countermeasure Caused by the effects of the sam ple Response time may slow down depend ing on the propertie...

Страница 121: ...r and press the ON OFF key 10 seconds later If the same error occurs again seek repairs at contact HORIBA sales representative The electrode con nector is not attached correctly Turn the power OFF the...

Страница 122: ...displayed Display range 99 9 or more The conductivity value is outside the display range when conductivity value is displayed Display range 0 00 to 19 99 when cell constant is 100 m 1 Cause Counterme...

Страница 123: ...electrode If the displayed measurement value is near 0 the instrument is normal Cause Countermeasure The temperature of the sample is out side display range Check the sample temperature Adjust it with...

Страница 124: ...logged When the test print is made according to the manual is it done correctly Cause Countermeasure The effects of the sample The pH or other properties of the sample solution may have changed over t...

Страница 125: ...nciple Glass electrode Display range pH 2 000 to pH19 999 Measuring range pH0 000 to pH14 000 Display resolution 0 001 pH Repeatability 0 005 pH 1 digit Temperature Measuring principle Thermistor meth...

Страница 126: ...mS m to 19 99 S m Cell constant 10 m 1 0 0 S m to 1 999 S m Cell constant 1000 m 1 0 00 mS m to 199 9 S m Display resolution 0 05 of full scale Repeatability 0 5 1 digit of full scale Resistivity Mea...

Страница 127: ...ge 0 00 PPT to 80 00 PPT 0 000 to 8 000 Display resolution 0 01PPT 0 001 TDS Measuring principle Conversion from conductivity value Measuring range 0 01 mg L to 100 g L Display resolution 0 01 mg L It...

Страница 128: ...nual temperature compensation value 25 C Auto power off OFF Sample ID 0000 Calibration interval OFF Password OFF Auto data memory OFF Auto print OFF pH Calibration standard solution NIST Default value...

Страница 129: ...3014031951 AC adapter Cable EU 230 V 3014031952 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 30...

Страница 130: ......

Страница 131: ...For any question regarding this product please contact your local agency or inquire from the Customer Registration website http www horiba com register 1st edition October 2011 CODE GZ0000260898...

Страница 132: ......

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