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Chapter 6 Maintenance and Troubleshooting

6.2 Troubleshooting

6.2.2 More troubleshooting

This section explains how to respond to various symptoms of trouble
that are not indicated by an error number.

●

Nothing shows up on the display when the power is turned ON

●

The indicated value fluctuates

When there is a problem with the electrode...

When there is a problem with the main unit of the meter...

When there is a problem with the standard solution...

Cause

How to solve problem

No batteries

Place batteries in the meter.

The batteries are
loaded with the poles
reversed.

Re-insert the batteries with the poles correctly
oriented.

The battery voltage
is low.

Remove the old batteries and correctly insert
new dry-cell batteries.
Or, connect the unit to the optional AC
adapter.

Cause

How to solve problem

There are air
bubbles on the
electrode.

Shake the electrode to remove the air
bubbles.

Cause

How to solve problem

There is a motor or
other device causing
electrical
interference.

Move the meter to a place where it is not
subject to dielectric effects.
Be sure to ground devices that are using com-
mercial electricity.

The electrode is not
connected correctly.

Connect the electrode correctly.

Cause

How to solve problem

Some effects of the
sample.

Determine if this is the cause by measuring
with a stable standard solution.

Содержание DS-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: ...ver the following Any trouble or damage attributable to actions or conditions specifically mentioned to be avoided in the operation manuals Any trouble or damage attributable to use of the meter in ways or for purposes other than those described in the operation manuals If any repairs renovations disassembly etc are performed on this meter by any party other than us or a party authorized by us Any...

Страница 4: ...ent categories Ⅱ Ⅲ and Ⅳ 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 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 inst...

Страница 5: ...to 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 possibly contact with moisture It may cause fire electric shock or breakage Part of the electrode is made of glass handle with care not to break it WARNING This indicates an potentially hazardous situatio...

Страница 6: ...jury 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 requires a special care and attention This mark indicates to which the reader should go for reference This mark indicates reference information HINT ...

Страница 7: ...tion by the fingers not by the hard object like metal stick or rod To disconnect the electrode cable or interface cable pull them out with holding the connector part Do not pull the cable part it may cause a breakage Do not use any unspecified batteries it may cause a breakage Location of use and storage The place which room temperature is at 0 to 45 The place which relative humidity is under 80 a...

Страница 8: ...surement 13 2 3 Measurement modes 14 2 4 Selecting the measurement modes 15 2 5 Conductivity measurement 16 Chapter 3 Functions 23 3 1 Data memory function 23 3 2 Displaying and setting the clock 25 3 3 Setting modes 26 3 3 1 Entering the Setting mode 26 3 3 2 Temperature compensation setting 28 3 3 3 Conductivity unit setting 29 3 3 4 Temperature coefficient setting 29 3 3 5 Sample ID setting 30 ...

Страница 9: ...ck is performed in the Calibration mode 62 5 4 5 Test printing format in the Maintenance mode 62 Chapter 6 Maintenance and Troubleshooting 63 6 1 Conductivity electrode maintenance 63 6 2 Troubleshooting 64 6 2 1 Error message chart 64 6 2 2 More troubleshooting 68 Chapter 7 Reference 71 7 1 Conductivity measurement 71 7 2 Specifications 77 7 3 Default settings 80 7 4 Operation flowcharts 81 7 5 P...

Страница 10: ...trodes how to replace the batteries and precautions when using the meter 1 1 Package contents The following items are shipped with each HORIBA COND meter To take measurements you will need electrode s Refer to 7 6 Spare and optional parts page 83 when purchasing the electrode s Name Q ty Meter 1 Stand 1 Dry cell batteries 4 Operation manual 1 AC adapter 1 ...

Страница 11: ...istivity Temperature Function Explanation Page No Data memory Enables a maximum of 300 items to be stored page 23 Clock The date and time are displayed page 25 Auto Power OFF Turns ON OFF setting that automatically turns power OFF if no keys are touched for 30 minutes page 35 RS 232C communications Enables communication with a computer using RS 232C page 39 Printer output Prints the contents of th...

Страница 12: ...atically or manually sets a temperature coefficient for a sample page 29 Name Explanation Page No LCD check Enables check for whether or not all LCD segments are displayed page 32 Battery voltage check Enables simple check of battery voltage page 33 Temperature zero adjustment Carries out temperature calibration page 34 Auto Power OFF Sets the function that automatically turns the power OFF if no ...

Страница 13: ...モードガイド入力 CH 温度月日秒測定単位データ No 年状態表示時分選択カーソル HOLD 装置モード Status display Calibration history Input channel HOLD Second Meter mode Temperature month and day Measurement data hour and minute Error No Data No Year Status display Cursor for selecting setting mode Setting mode guide Measurement unit Part name Display Contents Input channel Input channel 1 Measurement item Conductivity Measurement mo...

Страница 14: ...sec Displayed while data in memory is being called up and when manual data memory is being called up Displayed when a printer is connected Sometimes displayed when a computer is connected depending on the computer Displayed during manual temperature compensation Not displayed during automatic temperature compensation HOLD Displayed while the data is held HOLD status Blinks during measurement or ca...

Страница 15: ...imately 30 minutes Name Description MEAS key Returns to the Measurement mode Starts measurement MODE key Selects measurement item SET key Selects setting item CELL key Enters the Cell Constant Setting mode UP key Executes the data memory function Increases numerical values ENTER key Establishes the setting DOWN key Calls up data memory Decreases numerical values ON OFF key Turns ON OFF the power T...

Страница 16: ...Chapter 1 Overview of COND Meter 1 5 Assembling the electrode stand DS 51 7 1 5 Assembling the electrode stand 1 Mount the electrode stand on the rear of the meter as shown in the figure below ...

Страница 17: ...ectrode connector 1 Insert the electrode connector making sure to align the connector grooves with the pins in the connector port on the main unit Do not push the electrode connector with undue force when the pins are not properly aligned 2 Push the electrode connector into the connector port while turning it clockwise following the grooves 3 Push the connector cover over the connector being caref...

Страница 18: ...lectrodes DS 51 9 Temperature connector 1 Insert the temperature connector into the jack on the main unit of the COND meter When the temperature electrode is not connected or is connected improperly the automatic temperature compensation ATC will be 25 C ...

Страница 19: ... will erase the clock data To save the clock data remove and replace the batteries while the meter is connected to the AC adapter Replace the batteries only after turning the power OFF Any saved data will not be lost When opening and closing the battery cover be careful that no water gets inside the meter The life of batteries included with the COND meter may be short because the batteries were us...

Страница 20: ...specifications 1 Connect the connector of the AC adapter to AC adapter connecting port on the side of the meter Supply voltage range 100 200 V AC Frequency range 50 60 Hz Current rating Max 370 mA Class2 Power supply Equipment protected by double insulation Indoor use only Supply voltage fluctua tions allowed up to 10 AC adapter connecting port connecting port AC adapter connecting port ...

Страница 21: ...Chapter 1 Overview of COND Meter 1 8 Connecting the AC adapter 12 ...

Страница 22: ...e ON OFF key 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 clock allows you to record the date of calibration and data memory storage When using the meter for the first time be sure to set this clock 3 2 Displaying and setting the clock page 25 ...

Страница 23: ...t is cancelled or cleared Auto Hold Measurement mode Auto Hold Measurement mode maintains the display of the value measured when the meter automatically judges that the measured value has stabilized Press the MEAS key when in the Instantaneous Value Measurement mode to make HOLD blink on the display When the measured value becomes stable HOLD will stop blinking and remains displayed and the measur...

Страница 24: ...E 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 measurement mode Power ON COND Measurement mode instantaneous value Salinity Measurement mode instantaneous value Resistivity Measurement mode instantaneous value Clock display ...

Страница 25: ...taneous value Power ON 1 Electrode preparation Setting the clock page 25 3 3 3 Conductivity unit setting page 29 3 3 4 Temperature coefficient setting page 29 3 Cell constant setting 4 Calibration mode About once a year Preparation for standard solution 5 Conductivity Measurement mode instantaneous value Auto Hold calibration Clear Hold 3 3 5 Sample ID setting page 30 6 Auto Hold Measurement insta...

Страница 26: ...ctrode instruction manual and make sure you have the correct electrode Entering the Conductivity Measurement mode 1 Remove the electrode protective cap from the electrode 2 Immerse the electrode in pure de ionized water 3 Turn the power ON The Conductivity Instantaneous Value Measurement screen will appear ...

Страница 27: ...t the cell constant written on the electrode label Setting range 0 700 1 300 To change the coefficient use the following procedure When the SI unit system m 1 is set When the former unit system cm 1 is set Temperature coefficient The default value of the temperature coefficient is set at 2 00 ºC To change this setting refer to 3 3 4 Temperature coefficient setting page 29 Unit Setting The default ...

Страница 28: ...f potassium chloride 2 Enter the Calibration mode by pressing the MODE key in the CELL SET mode 3 Enter the value of the standard solution used for calibration in the Calibration mode using the and key Conductivity and temperature coefficient for various solutions page 75 When the temperature conversion has been set to ON when setting the temperature coefficient calibration is performed with the c...

Страница 29: ...easured value will be displayed and HOLD will blink until the reading stabilizes When the measured value stabilizes HOLD will stop blinking and the measured value will remain displayed and measurement will be completed Refer to the Criteria for judging stability page 14 for the criteria for judging the stability of the readout When the COND meter is in the Instantaneous Value Measurement mode or t...

Страница 30: ...electrode Enter the Salinity Measurement mode by pressing the MODE key in the Conductivity Measurement mode Resistivity measurement Resistivity can be measured using the conductivity electrode Enter the Resistivity Measurement mode by pressing the MODE key in the Conductivity Measurement mode Salinity measurement Resistivity measurement ...

Страница 31: ...Chapter 2 Taking Measurements 2 5 Conductivity measurement 22 ...

Страница 32: ... measurement reading is stored along with the temperature data HOLD value instantaneous value ATC MTC calibration point pH and sample ID at the time the measurement was taken After the data number is displayed the screen returns to the Instantaneous Value Measurement mode Up to 300 items of data can be stored in the memory If the number of data items exceeds the maximum limit ERR 10 is displayed a...

Страница 33: ...e 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 desired data item using the and keys 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 mode to print the data Data memory No Measurement...

Страница 34: ...e CELL key when the Clock Display screen is displayed to show the Setting screen for the clock 2 Switch the display to year month day hour minute and second using the ENTER key 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 press the ENTER key to update the setting Pressing the CELL key at this time returns you to t...

Страница 35: ...g Mode Selection cursor one by one to allow you to select the Setting mode of your choice 3 Press the MEAS key to return to the Measurement mode from the Setting mode Setting Mode Selection cursor Setting mode items Setting mode Selection cursor Display Name Description Page No Temperature Compensation Selects the Auto Manual mode for temperature compensation page 28 COND Unit Sets the unit for co...

Страница 36: ... 3 Functions 3 3 Setting modes DS 51 27 Sample ID Stores the memory with putting ID to the measured sample page 30 Maintenance Sets various maintenance related settings page 31 Display Name Description Page No ...

Страница 37: ...pensation 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 connected the display shows 25 C MTC Manual temperature compensation when an electrode temperature sensor is not being used and the temperature of the solution isknown before hand MTC is displayed Set the...

Страница 38: ...de 2 Use the ENTER key to toggle between S m and S cm units 3 3 4 Temperature coefficient setting 1 Press the SET key in the Measurement mode and select COND TC Setting mode 2 Pressing the ENTER key toggles the temperature conversion ON and OFF 3 Specify a numerical value for the temperature coefficient using the and keys Setting range 0 00 to 10 00 per ...

Страница 39: ...e ID records its sample ID number as well as the measured data at time the data is stored 1 Press the SET key in the Measurement mode to enter the Valid ID Setting mode 2 Use the ENTER key to select the digit 3 Specify a numerical value using the and keys Setting range 00000 to 99999 ...

Страница 40: ...y voltage check page 33 02 Tempera ture zero adjustment Carries out temperature calibration when the temperature sensor is immersed in a liquid of known temperature page 34 03 Automatic power off setting Turns Automatic Power off function ON OFF and sets time period after which the power will be turned off when no keys are touched page 35 05 Remaining data memory Displays number of data items that...

Страница 41: ...e 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 voltage check item No 01 HINT Entering the Maintenance mode Item No 00 Item No selection Maintenance mode Measure ment mode ...

Страница 42: ...s set at approximately 4 4 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 temperature zero adjustment item No 02 HINT Entering the Maintenance mode Battery Item No 01 Item No selection Maintenance mode Measure ment mode ...

Страница 43: ...ture 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 without calibration The mode should be used when a greater precision than 1 C is required 2 Use the MODE key to proceed to Automatic power off setting item No 03 HINT Entering the Maintenance mode Item No 02 Item No selection Maintenance mo...

Страница 44: ...N the power to the COND 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 turned OFF using the and keys Setting range 1 to 30 minutes 2 Press the MODE key to proceed to Item No 05 Remaining data memory HINT Entering the Maintenance mode Item No 03 Item No selection...

Страница 45: ...NT 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 HINT Entering the Maintenance mode Item No 05 Number of remaining data memory items Item No selection Maintenance mode Measure ment mode Item No 06 Item No selection Maintenance mode Measure ment mode...

Страница 46: ...urn the COND meter to the original settings when the meter was purchased 1 Press the ENTER key to initialized the settings 2 Use the MODE key to proceed to Printer connection and printing test item No 08 The setting values to be initialized are shown on page 80 HINT Entering the Maintenance mode Item No 07 Item No selection Maintenance mode Measure ment mode ...

Страница 47: ...est When conditions are normal End is displayed When conditions are not normal Err is displayed 2 Press the MODE key to return to the first item in the maintenance modes LCD check Test print format HINT Entering the Maintenance mode Item No 08 When the printer is not connected or power is OFF When the printer is connected or power is ON Item No selection Maintenance mode Measure ment mode ...

Страница 48: ...r the on line mode may not start up and RS 232C communications cannot proceed normally If the transfer format is changed turn the power to both the pH meter and the computer OFF and then ON again When creating a program for RS 232C put the meter in the ON LINE mode by entering an on line command at the beginning of the program The control switches become invalid when the meter is in the ON LINE mo...

Страница 49: ...ssage is returned in the OFF LINE mode The meter returns a response to any operation made in the following format OK CR LF If the pH meter does not accept the operation it returns an error mes sage in the following format ER n CR LF n 0 Communication error 1 When a non existent command is input 2 When a timing command is input to which the meter cannot respond 3 When the numerical value in the com...

Страница 50: ...alinity measurement mode designation SA page 42 Resistivity measurement mode designation OH page 43 Start measurement MS page 43 Start conductivity cell constant calibration CD page 44 Data clear DC page 45 Data IN designation IN page 45 Power Off OF page 45 Request for Command Page No Header Command code Clock data R OT page 47 Measurement MD page 48 Number of stored data items MC page 50 Memory ...

Страница 51: ...as been received LOCK is displayed Conductivity Measurement mode designation command format This command is always valid when on line The meter changes the status to Conductivity Instantaneous Value display Salinity Measurement mode designation command format This command is always valid when on line The meter enters the Salinity Instantaneous Value display 0 or 1 0 off line 1 on line Command code...

Страница 52: ...easurement Auto Hold Measurement will start If the command is issued during a measurement hold or during calibration the meter will return to Instantaneous Value Measurement status Halt potential hunting command format This command is valid when on line only during measurement on AUTO HOLD Issuing this command halts measurement on AUTO HOLD Header Command code Resistivity Measurement mode designat...

Страница 53: ...n units are μ m 0 0 999 9 only one place to the right of the decimal When units are mS m or S m 0 0000 199 9 After calibration is completed the cell constant coefficient will appear on the screen and be stored in the memory Prefix for the unit of the calibration value to be set 0 1 m 2 μ The set unit determines which unit is used either S m or S cm Standard solution concentration to set Command co...

Страница 54: ...commands DS 51 45 Data clear command format This command clears the data retained in the memory Data IN designation command format Power Off command format Command code Data clear Header Header Command code Data IN designation Command code Power Off Header ...

Страница 55: ...ormat of responses from meter When no operation can be received ER n CR LF n 0 Communications error 1 Command code does not exist 2 Unacceptable timing entered 3 Data exceeds range When operation has been received A When data is requested the result of the request is sent out according to each format B When an operation command has been issued OK is sent back Format OK CR LF ...

Страница 56: ...ponses DS 51 47 Clock data request command and response Request command format Meter response format Command code Header Seconds 2 digit 0 59 Minutes 2 digit 0 59 Hours 2 digit 0 23 Day 2 digit 01 31 Month 2 digit 01 12 Header Year 4 digit A D lead zero is suppressed ...

Страница 57: ...it 3 Conductivity 5 Salinity 6 Resistivity Channel number 1 digit 1 1CH Measurement status 1 digit 0 Instantaneous value 1 Hold 2 Potential hunt in progress Measurement or calibration 1 digit 0 Measurement 1 Calibration Ion slope 1 digit SP Year 4 digit A D lead zero is suppressed Month 2 digit 01 12 Day 2 digit 01 31 Hours 2 digit 0 23 Minutes 2 digit 0 59 Seconds 2 digit 0 59 Measurement value 6...

Страница 58: ...nce over others is output When the measurement calibration type is 0 The latest data is output regardness of occurrence of measurement errors 1 SP is output when any calibration error is produced Potential 5 digit Temperature 5 digit including decimal point 10 0 to 100 0 Right aligned with blank digits filled with spaces Temperature setting 1 digit 0 ATC 1 MTC Unit 1 digit Conductivity 0 S cm 1 S ...

Страница 59: ...C communications 4 4 Data request commands and responses 50 Request command for number of stored data items and its response Request command format Meter response format Header Command data Header Number of data items ...

Страница 60: ...econds 2 digit 0 59 Measurement value 6 digit Minutes 2 digit 0 59 Hours 2 digit 0 23 Day 2 digit 01 31 Month 2 digit 01 12 Year 4 digit A D lead zero is suppressed SP Measurement status 1 digit 0 Instantaneous value 1 Auto Hold 2 Potential hunt in progress Measurement calibration type 1 digit 0 Measurement Measurement calibration type 1 digit 0 Measurement Channel number 1 digit 1 1CH Measurement...

Страница 61: ...ation type is 0 The latest data is output regardness of occurrence of measurement errors 1 SP is output when any calibration error is produced Potential 5 digit Temperature 5 digit including decimal point 10 0 to 100 0 Right aligned with blank digits filled with spaces Temperature setting 1 digit 0 ATC 1 MTC Unit 1 digit Conductivity 0 S cm 1 S m Supplementary unit 1 digit 0 none 1 μ 2 m 3 k 4 M ...

Страница 62: ...odel and its response Request command format Meter response format Request command for software version and its response Request command format Meter response format Header Command code Lot No 7 digit Model 2 D52 3 D53 4 D54 5 D55 Model 7 DS 51 Header Header Command code Header Software version 12 digit ...

Страница 63: ...inal Start Programs Accessories Communications HyperTerminal The HyperTerminal program Hypertrm exe is activated 2 Make the setting for name connection and port Select the COM port of your PC currently being used for the port setting 3 Set the COM port of the PC and set the transmission parameters as follows Baud rate 2400 bps Character length 8 bits Parity none Stop bit 1 bit 4 Make the settings ...

Страница 64: ...nsmitted via HyperTerminal by enabling the Echo typed characters locally E option 5 Command input If a command is input the corresponding response data is sent back Command input should be completed within 10 seconds Be sure to first set the meter to the On line mode using the On line Off line command Windows is a registered trademark of Microsoft Corporation ...

Страница 65: ...Chapter 4 RS 232C communications 4 5 Communication example using the Hyper Terminal 56 ...

Страница 66: ...er Seiko DPU H245AS A03A Heat sensitive paper Attach the printer cable to the printer output connector Connect your printer only after turning OFF the power to the main unit of the COND meter For the layout of the connector terminals for the printer output cable refer to 7 5 Pin layout of special cables page 82 When a printer is not connected remove the printer cable from the meter and put the rub...

Страница 67: ... prepare the printer paper and ink ribbon Keep the LF key held down The printer prints only when the LF key is being pressed Setting for a thermal paper printer DPU H245AS Prepare printer paper and turn ON the power switch with the FEED and CHARGE switches held down Set the baud rate of the printer to the above value referring to the instruction manual for the printer Start the function setting mo...

Страница 68: ...taneous value is being displayed in the Measurement mode When the manual data memory storage is performed in the Measurement mode When pressing the ENTER key while in the Data Memory Call mode When calibration or check is performed in the Calibration mode When the ENTER key is pressed in the calibration history display When test printing is selected while in the Maintenance mode ...

Страница 69: ...tivity Measurement mode When the data is the data confirmed with Auto Hold HOLD is shown Nothing is displayed for the instantaneous value measurement ID 5 digits Unit S m mS m µS m S cm mS cm µS cm Temperature compensation setting Manual mode MTC Auto mode ATC ID 5 digits Temperature compensation setting Manual mode MTC Auto mode ATC ID 5 digits Temperature compensation setting Manual mode MTC Aut...

Страница 70: ...data memory No in the first line and the data in accordance with the format same with the one in 5 4 1 When the ENTER key is pressed in the Measurement mode page 60 Example in the COND Measurement mode Example in the Salinity Measurement mode Example in the Resistivity Measurement mode Data memory number Data memory number Data memory number ...

Страница 71: ...en The format is the same at that described in 5 4 2 When the manual data memory is performed in the Measurement mode page 61 5 4 4 When calibration or check is performed in the Calibration mode COND cell constant calibration 5 4 5 Test printing format in the Maintenance mode When calibration is per formed ...

Страница 72: ...sage is displayed be sure to take appropriate action 6 1 Conductivity electrode maintenance Refer to the electrode operation manuals for how to maintain each electrode Long term storage When an electrode will not be used for a long period of time store it after performing the following procedure Also perform maintenance on the electrode every three to six months 1 Remove the electrode from the CON...

Страница 73: ...g in the lower left hand corner of the display 6 2 1 Error message chart Error no Message Explanation 01 Memory error Data cannot be read from or written to 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 09 Printer error There is a problem with the printer 10 Data memory over The numbe...

Страница 74: ...ed when ERR No 02 is displayed Cause How to solve problem The conductivity meter does not start operating correctly even after the power is turned ON Take the battery from the conductivity meter and disconnect the AC adapter Then press the ON OFF key for about 10 seconds The internal IC is defective Seek repairs at your nearest retail outlet or HORIBA service station Cause How to solve problem The...

Страница 75: ...olution when the sample solution is pure water or another solution with low conductivity or the concentration or temperature change Press the MEAS key again while HOLD is either blinking or steadily lit in the display to measure the sample using instantaneous value measurement The electrode is dirty Wash the electrode The temperature of the sample solution is fluctuating Measure after the sample s...

Страница 76: ...to 1 3 Delete data stored in the memory after confirming their contents Cause How to solve problem The printer paper is jammed Remove the jammed paper There is no printer paper Load the printer with paper There is a problem with the printer connection Reconnect the printer after making sure there is nothing wrong with the connector parts The printer is defective Replace the printer Cause How to so...

Страница 77: ...reversed Re insert the batteries with the poles correctly oriented The battery voltage is low Remove the old batteries and correctly insert new dry cell batteries Or connect the unit to the optional AC adapter Cause How to solve problem There are air bubbles on the electrode Shake the electrode to remove the air bubbles Cause How to solve problem There is a motor or other device causing electrical...

Страница 78: ...ppears when this done the meter is nomal Cause How to solve problem Some effects of the sample Response time may slow down depending on the properties of the sample solution Cause How to solve problem The key lock function is ON Turn the power OFF and then turn it back ON again The system is locked Turn the power OFF and then turn it back ON again The electrode connector is not attached correctly ...

Страница 79: ...re within the measurement range The thermistor connection within the electrode is severed or shorted Measure the resistance of the temperature sensor connector If it is 50 kΩ or more at room temperature replace the electrode The electrode connector is not attached properly Attach the electrode connector properly so that the O ring on the temperature connector disappears from sight The main unit of...

Страница 80: ... every three months Prepare the potassium chloride standard solution KCl 0 01 mol L using the procedure below In addition if an error of 5 of more compared to the above values occurs calibrate the cell constant See page 19 Preparing potassium chloride standard solution How to prepare solution Dry the potassium chloride powder superior quality commercial potassium chloride or better for two hours a...

Страница 81: ...ned parallel to each other separated by distance l expressed in m Then solution is poured into the cell until it is full and alternating current is run between the plates Fig 1 Type of conductivity cell Each positive and negative ion in the solution will migrate toward the oppositely charged pole The result is that current flows through the solution by means of ion conductivity When this occurs re...

Страница 82: ... m Inserting conductivity L expressed in S m into equation 1 results in equation 2 below R J L Equation 2 As is clear from equation 2 when a conductivity cell having a cell constant J of 1 m 1 is used in other words when a conductivity cell having two pole plates that each have an area a of 1 m2 and are positioned parallel to each other such that the distance l between the two plates is 1 m is use...

Страница 83: ...w much change expressed in occurs in conductivity when the temperature of the solution changes by 1ºC The temperature coefficient is expressed in units of ºC standard temperature This temperature coefficient is found by assuming that the conductivity of the sample changes linearly in relation to temperature whereas the change in conductivity of an actual sample strictly speaking follows a curve Th...

Страница 84: ...54 03 2 09 10 6 87 2 49 29 4 54 34 2 21 15 8 86 2 56 33 6 52 21 2 36 Na2CO3 18 5 4 56 2 52 42 42 12 2 83 10 7 05 2 71 NH3 15 0 1 0 0251 2 46 15 8 36 2 94 1 6 0 0867 2 38 KCl 18 5 6 90 2 01 4 01 0 1095 2 50 10 13 59 1 88 8 03 0 1038 2 62 15 20 20 1 79 16 15 0 0632 3 01 20 26 77 1 68 HF 18 1 5 1 98 7 20 21 28 10 1 66 4 8 5 93 6 66 KBr 15 5 4 65 2 06 24 5 28 32 5 83 10 9 28 1 94 HCl 18 5 39 48 1 58 2...

Страница 85: ...8 19 1 39 10 32 00 2 18 49 6 63 41 1 57 15 42 10 2 31 62 49 64 1 57 CH3COOH 18 10 15 26 1 69 H3PO4 15 10 5 66 1 04 15 16 19 1 74 20 11 29 1 14 20 16 05 1 79 40 20 70 1 50 30 14 01 1 86 45 20 87 1 61 40 10 81 1 96 50 20 73 1 74 60 4 56 2 06 Substance Temp ºC Conc wt Cond S m Temp coef C Substance Temp ºC Conc wt Cond S m Temp coef C ...

Страница 86: ...9 99 S m Cell constant 10 m 1 0 0 µS m 1 999 S m Cell constant 1000 m 1 0 00 mS m 1999 9 S m Resolution 0 05 of full scale Repeatability 0 5 1 digit of full scale Salinity concentration Measurement principle 2 AC bipolar method Measurement range 0 4 Resolution 0 01 Resistivity Measurement principle 2 AC bipolar method 2 Measurement range Cell constant 100 m 1 5 00 Ω m 199 9 kΩ m Cell constant 10 m...

Страница 87: ... 0 1 cm 1 0 200 1 999 S cm 20 0 199 9 mS cm 2 00 19 99 mS cm 0 200 1 999 mSc m 20 0 00 0 199 9 µS cm 2 00 0 00 19 99 µS cm 0 000 1 999 µS cm Unit m Range Cell constant 10 m 1 100 m 1 1000 m 1 0 200 1 999 MΩ m 20 0 199 9 kΩ m 2 00 19 99 kΩ m 0 200 1 999 kΩ m 20 0 00 0 199 9 Ω m 2 00 0 00 19 99 Ω m 0 000 1 999 Ω m Unit cm Range Cell constant 0 1 cm 1 1 cm 1 10 cm 1 20 0 199 9 MΩ cm 2 00 19 99 MΩ cm ...

Страница 88: ... common among meter models Data memory capacity Max 300 pieces of data Power Dry cell batteries with automatic power off function Ambient temperature 0 45 ºC Dimensions 79 H 179 W 230 D mm not including stand Mass of main unit Approx 1 kg including batteries ...

Страница 89: ...ry Item Default values Common settings Temperature compensation Automatic temperature compensation Manual temperature compensation 25 ºC Automatic power OFF Approx 30 min ON Sample ID 00000 Conductivity Unit S m Temperature coefficient 2 0 ºC ON Cell constant 1 0 x 100 m 1 ...

Страница 90: ...ll constant setting 2 Auto Hold Measurement Conductivity One point Calibration mode Clock setting Clock display 1 Conductivity Measurement mode instantaneous value Clear Hold 3 Salinity Measurement mode instantaneous value 4 Auto Hold Measurement Clear Hold Setting mode 1 2 3 4 5 6 Data storage Memory call up 5 Resistivity Measurement instantaneous value 6 Auto Hold Measurement Clear Hold ...

Страница 91: ... CBM 910 24RJ100 A 7 5 3 Cable for SEIKO printer DPU H245AS A03A Meter main unit MINI DIN8M Printer D SUB 9 PIN 2 CTS 7 RTS 3 TXD 2 RXD 4 GND 5 GND 5 RXD 3 TXD Meter main unit MINI DIN8M Printer D SUB 25 PIN 2 CTS 20 BUSY 3 TXD 3 RXD 4 GND 7 GND 5 RXD 2 TXD Meter main unit MINI DIN8M Printer D SUB 25 PIN 2 CTS 8 BUSY 3 TXD 3 DATA 4 GND 5 GND 5 RXD 2 OPEN ...

Страница 92: ...art name Model Part number Remarks Conductivity electrode 3552 10D 9056000900 Water proof Cell constant 100 m 1 3551 10D 1 9056000800 For low conductivity Cell constant 10 m 1 3553 10D 1 9056001000 For high conductivity Cell constant 1000 m 1 Flow through type conductivity electrode 3561 10D 1 9056001100 For low conductivity Cell constant 10 m 1 3562 10D 1 9056001200 General purpose Cell constant ...

Страница 93: ...art name Part number Remarks AC adapter for the 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 Serial cable 9096004800 Electrode stand 9096002700 Stand arm 9096002800 ...

Страница 94: ...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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