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1 Overview of the Meter

1.1 Package contents

D-51

Overview of the Meter

This chapter explains the part names, how to connect
the electrodes, how to replace the batteries, and
precautions when using the meter.

1.1

Package contents

The following items are shipped with each HORIBA pH
meter package.

Meter (main unit) 1 unit

Dry-cell batteries

2 pcs.

Strap 1

Содержание d-51

Страница 1: ...For more information please contact us ExpotechUSA 10700 Rockley Road Houston Texas 77099 USA 281 496 0900 voice 281 496 0400 fax E mail sales expotechusa com Website www ExpotechUSA com...

Страница 2: ......

Страница 3: ...HORIBA should occur during this period necessary exchange or repairs shall be conducted by HORIBA free of charge The warranty does not cover the following Any trouble or damage attributable to actions...

Страница 4: ...ment categories and FCC Warning This equipment has been tested and found to comply withthe limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide...

Страница 5: ...o cause fire or accidents Do not disassemble or modify the meter Heat or fire may occur to cause fire or accidents CAUTION Do not use the serial communication or AC adapter in the place that may possi...

Страница 6: ...ury CAUTION This indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert unsafe practices This mark indicates the operation...

Страница 7: ...ding the connector part Do not pull the cable part it may cause a breakage Do not remove the battery gasket or twist it When opening the battery case make sure that no foreign matter is attached to th...

Страница 8: ...15 2 3 Measurement modes 16 2 4 Selecting the measurement modes 18 2 5 Measuring pH 19 3 Functions 29 3 1 Data memory function 29 3 2 pH calibration history display 32 3 3 Displaying and setting the...

Страница 9: ...NTENTS VI HORIBA 5 Reference 69 5 1 pH measurement 70 5 2 Specifications 76 5 3 Default settings 77 5 4 Operation flowcharts 78 5 5 Spare and optional parts 79 5 5 1 Spare parts list 79 5 5 2 Options...

Страница 10: ...his chapter explains the part names how to connect the electrodes how to replace the batteries and precautions when using the meter 1 1 Package contents The following items are shipped with each HORIB...

Страница 11: ...w of the Meter 1 1 Package contents 2 HORIBA Soft case 1 pc Operation manual 1 book To take measurements you will need electrode s Refer to 5 5 Spare and optional parts page 79 when purchasing the ele...

Страница 12: ...the data of measured values and temperature to the memory max 300 items page 29 pH repeatability check Displays the difference between the calibration value and measured value after calibration page...

Страница 13: ...pensation MTC mode that uses user specified temperature page 41 Function Explanation Page No LCD check Enables check for whether or not all LCD segments are displayed page 44 Battery voltage check Ena...

Страница 14: ...of the Meter 1 3 Part names D 51 5 1 3 Part names The D 51 pH meter has the following parts Portion for attaching strap Dry cell battery holder Display AC connector Keys Electrode connector Temperatur...

Страница 15: ...etting modes Measurement data hour and minute HOLD Setting modes differ according to model Electrode status Part name Display Contents Input channel Measurement item Input channel 1 Displayed when mea...

Страница 16: ...played while the data is held HOLD status Blinks during measurement or calibration Electrode status Only in pH Measurement mode Not displayed Normal Blinking Cleaning is needed Constant display Replac...

Страница 17: ...scription MEAS key Returns to the Measurement mode Starts measurement MODE key Selects measurement item SET key Selects setting item CAL key Enters the Calibration mode Starts calibration UP key Execu...

Страница 18: ...tal portion when turning the electrode conenctor The following connectors are used depending on electrode type Electrode connector G R electrode 1 Insert the electrode connector making sure to align t...

Страница 19: ...t on without turning it The meter will be waterproof only if this cover is placed properly over the connector Temperature connector 1 Insert the temperature connector into the jack on the main unit un...

Страница 20: ...ock data remove and replace the batteries while the meter is connected to the AC adapter sold separately Replace the batteries only after turning the power OFF Any saved data will not be lost When ope...

Страница 21: ...rt the edge of the battery cover into the grooves on the meter and then tighten the stop screw Check that the rubber packing is twisted and no foreign matter is stuck to it Otherwise the meter may no...

Страница 22: ...n AC adapter specifications When the AC adapter is connected the meter is no longer waterproof Be careful not to let water get into the meter Supply voltage range 100 200 V AC Frequency range 50 60 Hz...

Страница 23: ...1 Overview of the Meter 1 8 Connecting the AC adapter 14 HORIBA...

Страница 24: ...ey turns the power on off The ON OFF key functions when it is pressed continuously for about one second to protect against accidental operation 2 2 Settings required before measurement The built in cl...

Страница 25: ...solution being measured Instantaneous Value Measurement mode The D 51 pH meter performs instantaneous value measurement as the default measurement mode when the power is first turned ON and when the a...

Страница 26: ...itial screeen displayed to make HOLD blink on the display When the measured value becomes stable HOLD will stop blinking and remain displayed and the measured value will remain displayed To clear the...

Страница 27: ...cting the measurement modes Pressing the MODE key changes the measurement mode The last measurement mode item is the clock display Pressing the MODE key once more returns the display to the first meas...

Страница 28: ...e screen instantaneous value Setting the clock page 35 3 Standard solution calibration Preparation for standard solution 3 4 3 pH standard solution setting page 37 3 4 4 Temperature compensation setti...

Страница 29: ...tial screen will appear Chemical solution The liquid inside the electrode is highly concentrated potassium chloride 3 33 mol L KCl If the internal solution in the electrode comes in contact with your...

Страница 30: ...displayed Standard solutions for calibration are defaulted to pH 2 pH 4 pH 7 pH 9 and pH 12 3 4 3 pH standard solution setting page 37 This section will explain how to conduct a two point calibration...

Страница 31: ...with filter paper or tissue paper 3 Open the internal solution filler port Leave the port open while calibration is taking place Calibration at first point 1 Immerse the tip of the electrode in a beak...

Страница 32: ...HOLD will stop blinking and the calibrated value will be displayed The bottle mark will be displayed indicating that calibration was conducted with pH7 standard solution To stop the calibration Press...

Страница 33: ...alue stabilizes HOLD will stop blinking and the calibrated value will be displayed The bottle mark will be displayed indicating that calibration was conducted with pH 4 standard solution 4 Press the M...

Страница 34: ...ot displayed The electrode is in good condition Electrode sensitivity is from 93 to 100 Blinking Electrode sensitivity has dropped to the level of 90 to 93 Make sure that you are using the right stand...

Страница 35: ...calibration 1 After calibration and while still in the Calibration mode immerse the electrode in pH 7 standard solution and press the ENTER key The difference between the calibrated value and measured...

Страница 36: ...e de ionized water and then wipe with filter paper or tissue paper 2 Open the internal solution filler port Leave the port open while measurement is taking place 3 Immerse the electrode all the way in...

Страница 37: ...ill stop blinking and will be displayed The indicated value will remain displayed continually Refer to the Criteria for judging stability page 17 for the criteria for judging the stability of the read...

Страница 38: ...easurement by pressing the key The measurement reading is stored along with the temperature data HOLD value instantaneous value ATC MTC and calibration point at the time the mea surement was taken Aft...

Страница 39: ...yed number returns to 0 after 300 the maximum number 2 Press the MODE key to display the data and time Select the desired data item using the and keys 3 Press the MODE key to display the ID Select the...

Страница 40: ...emory function D 51 31 If an error occurs while a data number is being displayed the error number will NOT be displayed When using a printer sold separately press the ENTER key while in the DATA OUT m...

Страница 41: ...er to pH repeatability check on page 26 pH calibration history 1 Press the CAL DATA key in the pH Measure ment mode 2 Pressing the CAL DATA key toggles between the latest calibration date and the late...

Страница 42: ...atus display When the meter is in a good condition When the electrode needs washing When the electrode is old and is going bad Refer to Asymmetrical potential display on page 71 pH latest check data 1...

Страница 43: ...the clock 34 HORIBA 3 3 Displaying and setting the clock The clock needs to be when the meter is used for the first time or after replacing the batteries Displaying the clock Press the MODE key in the...

Страница 44: ...year month day hour minute and second using the ENTER key You can set a numerical value using the and keys Set the seconds to 00 sec Pressing the ENTER key sets it to 00 3 After setting the clock pres...

Страница 45: ...g Mode Selection cursor appears at the left bottom of the screen to indicate that the Setting mode is active 2 Pressing the SET key moves the Setting Mode Selection cursor one by one to allow you to s...

Страница 46: ...rd solutions page 72 Display Name Description Page No pH Buffer Setting Sets the standard solution for pH calibration page 37 Temperature Compensation Setting Selects the Auto Manual mode for temperat...

Страница 47: ...Functions 3 4 Setting modes 38 HORIBA The calibrated value for pH 7 standard solution is different between the NIST standards and US standards NIST standard pH 6 86 at 25 C US standard pH 7 00 at 25...

Страница 48: ...d solution setting 1 Press the SET key in the Measurement mode and select the pH Buffer Setting mode 2 Press the ENTER key to toggle between NIST standard US standard USA and a user defined standard C...

Страница 49: ...ard solution used for calibration using the and keys While the setting is being made CuSt will blink 3 Press the CAL key to start the calibration The measured value will be displayed and HOLD will bli...

Страница 50: ...sation when using a temperature sensor of the electrode ATC is displayed When a temperature sensor is connected the current temperature is automatically displayed When no temperature sensor is connect...

Страница 51: ...unctions 3 4 Setting modes 42 HORIBA 3 4 5 Maintenance mode Press the SET key in the Measurement mode and select the Maintenance mode The LCD CHECK screen Item No 00 will appear Item No Maintenance mo...

Страница 52: ...stment Carries out temperature calibration when the temperature sensor is immersed in a liquid of known temperature page 46 03 Automatic power off setting Turns Automatic Power off function ON OFF and...

Страница 53: ...Maintenance mode to show item No 00 2 Press the ENTER key Compare the LCD screen with this diagram to confirm that all segments of the LCD are displayed 3 Use the MODE key to proceed to the Battery vo...

Страница 54: ...at approximately 2 2 V The measured voltage for batteries depends on the current The voltage shown in this mode will be a little lower than the actual voltage 1 Use the MODE key to proceed to tempera...

Страница 55: ...ode in a liquid with a known temperature and set the temperature using the and keys Setting range 0 0 to 100 0 C The temperature sensor attached to the electrode maintains an accuracy of 1 C even with...

Страница 56: ...he power to the meter automatically turns off if the keys are not operated for the set amount of time 1 Press the ENTER key to toggle between ON and OFF When set to ON set the time for the power to be...

Страница 57: ...T Entering the Maintenance mode Data memory clear Item No 06 1 Pressing the ENTER key clears all the data stored in the memory 2 Press the MODE key to proceed to Initialization of setting item No 07 H...

Страница 58: ...as purchased 1 Press the ENTER key to initialized the settings The setting values to be initialized are shown on page 77 HINT Entering the Maintenance mode 2 Press the MODE key to return to the first...

Страница 59: ...3 Functions 3 4 Setting modes 50 HORIBA...

Страница 60: ...r is equipped with a convenient error message function If an error message is displayed be sure to take appropriate action 4 1 pH electrode maintenance Maintain your electrodes by referring to the fol...

Страница 61: ...method explained below 1 Remove the electrode from the pH meter 2 Remove the protective cap from the electrode 3 Open the internal solution filler port and use a syringe to remove the internal solutio...

Страница 62: ...e paper 6 If the liquid on the inside of the electrode cap has dried wash the inside of the electrode cap with pure de ionized water and then after shaking out the water fill the cap with enough pure...

Страница 63: ...electrode is so dirty that it cannot be cleaned by rinsing with pure de ionized water wash the electrode using the most appropriate method below General dirt oily grime Wipe the dirt grime off using c...

Страница 64: ...the internal memory 02 Battery voltage low The battery voltage is low 03 Electrode stability error The electric potential did not stabilize within three minutes 04 Asymmetric potential error pH The a...

Страница 65: ...aranteed when ERR No 02 is displayed Cause How to solve problem The pH meter does not start operating cor rectly even after the power is turned ON Take the battery from the pH meter and disconnect the...

Страница 66: ...oncentration or temperature change Press the MEAS key again while HOLD is either brinking or steadily lit in the display to measure the sample using instantaneous value measurement The electrode is di...

Страница 67: ...electrode is cracked Replace the electrode The reference solution concentration is fluctuating Replace the internal solution in the reference electrode The electrode is not connected correctly Connect...

Страница 68: ...electrode 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 soluti...

Страница 69: ...ibration point This error does not affect calibration data obtained from previous three calibration points Refer to Standard solution calibration page 21 Cause How to solve problem Calibration was per...

Страница 70: ...the standard solution Prepare new standard solution There is a problem with the standard solution setting Check the NIST or US standards settings and the kind of standard solution used for calibration...

Страница 71: ...ror number Nothing shows up on the display when the power is turned ON Cause How to solve problem No batteries Place batteries in the meter The batteries are loaded with the poles reversed Re insert t...

Страница 72: ...bles on the electrode Shake the electrode to remove the air bubbles There is no reference solution remaining Fill the electrode with new reference solution as noted in the electrode operation manual T...

Страница 73: ...the sample solution Cause How to solve problem The liquid junction is not immersed in the sample solution Immerse the electrode in the sample solution up until the liquid junction or deeper Some effec...

Страница 74: ...rode is dry or dirty Wash the responsive membrane The electrode is cracked or worn out Replace the electrode There is a problem with the reference solution Fill the electrode with new reference soluti...

Страница 75: ...ing measured value disappears when this done the meter is nomal Cause How to solve problem The sample solution is inappropriate Change to a sample solution with properties within the measurement range...

Страница 76: ...the electrode is severed or shorted Measure the resistance of the temperature sensor connector If it is 50 k or more at room temperature replace the electrode The electrode connector is not attached...

Страница 77: ...olution The pH or other properties of the sample solution may have changed over time making repeatability poor The responsive membrane is dry or dirty Wash the responsive membrane There is not enough...

Страница 78: ...ter provides a simple compilation of information for those who would like to know about the functions of the main unit of the meter and other measurement principles in greater detail It also serves as...

Страница 79: ...electric potential differs depending on the type of solution the temperature of the solution and the structure of the liquid junction When solutions of different compositions come in contact ION diff...

Страница 80: ...ty however a potential does occur This potential is called asymmetric potential The size of the asymmetric potential differs depending on any stress that may have occurred during the processing of the...

Страница 81: ...n temperature is not recorded the results of the pH measurement are relatively meaningless Types of pH standard solutions When measuring pH the pH meter must be calibrated using a standard solution Th...

Страница 82: ...ion Phthalate pH 6 86 standard solution Neutral phosphate pH 9 18 standard solution Borate pH 12 45 standard solution Saturated calcium hydroxide solution 0 1 666 4 003 6 984 9 464 13 423 5 1 668 3 99...

Страница 83: ...ard settings Calibration is performed using Nernst s equation with the above values Temp C pH 7 standard solution Neutral phosphate pH 10 standard solution Carbonate 0 7 119 10 318 5 7 086 10 245 10 7...

Страница 84: ...e the pH 7 standard solution or a standard solution that approximates the pH value of the solution that is to be inspected When it is known beforehand whether the test solution is acidic or alkaline 2...

Страница 85: ...surement range pH 0 00 14 00 Resolution 0 01 pH Repeatability 0 01 pH 1digit Temp Measurement principle Thermistor Measurement range 0 0 100 0 C Resolution 0 1 C Repeatability 0 1 C 1digit Data memory...

Страница 86: ...y Item Default values Common setting Temperature compensation Automatic temperature compensation Manual temperature compensation 25 C Automatic power OFF Approx 30 min ON pH Standard calibration solut...

Страница 87: ...1 pH Measurement mode instantaneous value Clear Hold Automatic release of Hold Clock setting To pH Measurement mode 3 Calibration mode instantaneous value 2 Auto Hold Measurement Auto HOLD calibratio...

Страница 88: ...ard electrode 9621 10D 9096001700 Plastic body electrode for immersion measurement F 50 series standard electrode 9611 10D 9096001800 Glass body electrode reinforced responsive glass Laboratory use el...

Страница 89: ...9 standard solution 100 9 9003001800 Part name Model Part number Remarks pH2 standard solution powder 150 2 9003002600 Makes 500mL 10 packets Accuracy 0 05 pH pH4 standard solution powder 150 4 900300...

Страница 90: ...marks AC adapter for the pH meter AC adapter 9096003100 Be sure to purchase the cable when purchasing the AC adapter Cable For Japan 9096003200 For US 9096003300 For Europe 9096003400 Soft case 909600...

Страница 91: ...For more information please contact us ExpotechUSA 10700 Rockley Road Houston Texas 77099 USA 281 496 0900 voice 281 496 0400 fax E mail sales expotechusa com Website www ExpotechUSA com...

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