AD1030, AD1040, AD1200 pH /mV/ISE/Temperature Bench Meters
Contents
1. 0 to 9 10 11 12 13 14 15 Down arrow key to manually decrease tempera ture value or other parameters MEMRECIL key to recall stored value CFM GLP key to confirm values and view GLP data STORE key to store readings log on demand CAL SETUP key to enter exit calibration mode and to enter exit SETUP mode Left arrow key to toggle between parameters while in SETUP mode backwards to toggle between ab solute mV and temperature while in relative mV mode and between pH buffer and temperature while in pH calibration mode Note To select second function press first SHIFT and then the desired key The SHIFT tag will appear on the LCD until the desired key is pressed To leave second function mode press SHIFT again 11 Front Panel Primary LCD Secondary LCD Keyboard Rear Panel a 5 84 3 90986 090 6 A wW 1 Power adapter socket 2 Reference input socket 3 BNC connector for pH ISE and ORP electrodes 4 Temperature probe socket 5 Analog output sockets 12 OPERATIONAL GUIDE CONNECTIONS Reference input Temperature socket probe BNC connector ERS for electrodes Analog supply i p aa Q A e Plug the 12 Vdc adapter into the power supply socket Note These instruments feature a non volatile memory to keep calibration data and all meter settings even when unplugged e Attach the pH IS2. If the filling solution electrolyte is more than 2 5 cm below the fill hole add AD7082 electrolyte solution For faster response unscrew the fill hole screw during measurements STORAGE PROCEDURE To minimize clogging and assure a quick response time the glass bulb and the junction of the pH electrode should be kept moist and not allowed to dry out Replace the solution in the protective cap with a few drops of AD70300 storage solution NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER PERIODIC MAINTENANCE Inspect electrode and cable The cable used for con nection to the instrument must be intact and there must be no points of broken insulation on the cable or cracks on the electrode stem or bulb Connectors must be per fectly clean and dry If any scratches or cracks are present replace the electrode Rinse off any salt depos its with water For refillable electrodes 61 Refill the electrode reference chamber with fresh AD7082 electrolyte solution Allow the electrode to stand upright for 1 hour Follow the storage procedure above CLEANING PROCEDURE Soak in deionized water for approximately 30 minutes IMPORTANT After performing any of the cleaning procedures rinse the electrode thoroughly with deion ized water refill the reference chamber with fresh elec trolyte and soak the electrode in AD70300 storage so lution for at least 1 hour before taking measurements 62 ELECTRODES PROBES AND SOL
3. abled in the setup menu 35 LAST pH CALIBRATION DATA The last pH calibration data are stored automatically after a successful calibration To view the pH calibration data from pH measurement mode press SHIFT and then GLP key The instrument will display the date yyyy mm dd of the last calibra tion Sri me l moan Le Use the up arrow key to view all calibration parameters in the following sequence e Time hh mm of the last calibration 2417 DL 1 CAL TIMI 36 e pH calibration offset value GLP Lr wy l m 3 lt m L a Offset e pH calibration slope the GLP slope is the average of the calibration slopes the percentage is referred to the ideal value of 59 16 mV pH GLP ri e U M m IL CAL am as N a ur e Calibration buffers in the order used for calibration together with the corresponding warnings 4B i Un an ut 37 Notes e The OLd message displayed beside a buffer value means that this buffer was not used dur ing last calibration Press SHIFT and then SETUP key to see the old calibration date or time if old calibration date is the same as the last procedure e Each buffer is displayed with the resolution used during calibration e The no bUF message means that calibration was performed at less than five points e Calibration time out alarm status The displa
4. on the secondary LCD together with CAL and Cal Point 1 tags JA TC N 1 L ar iLi l pH J pone VE pama n an CAL Gal Paint pH If necessary press the up and down arrow keys to select a different buffer value En fo 23 The hourglass tag will blink on the LCD until the read ing is stable When the reading is stable and close to the selected buffer the CFM tag ap Ga pears Press the CFM key to confirm The calibrated value is then displayed on the primary LCD and the secondary LCD will display the second expected buffer value together with CAL and Cal Point 2 tags gt 3 PERPE wm En en un 4g i CAL al Point After the first calibration point is confirmed immerse the pH electrode and the temperature probe approxi mately 4 cm into the second buffer solution and stir gently The temperature probe should be close to the pH electrode If necessary use the arrow keys to select a different buffer value The hourglass tag will blink on the LCD until the read ing is stable 24 When the reading is stable and close to the selected buffer CFM tag appears Press CFM key to confirm The cali brated value is then displayed on the primary LCD and the secondary LCD will display the third expected buffer value After the second calibration point is confirmed im merse the pH electrode and the temperature probe
5. resolution If 0 01 pH resolution is selected dur ing calibration the displayed custom buffer value will be a rounded one While in setup changing mode for items calibra tion alarm time out custom buffer and alarm lim its press CLEAR to set the selected item to the default value Refer to the table below to select the correct ion charge for each ion type AD1200 only ION CHARGE ION TYPE 2 divalent anion S CO 1 monovalent anion _ F Cl Br I CN SCN ClO NO 1 monovalent cation H Na K Ag NH i 2 divalent cation Mg Ca Ba Cd Cu Pb undf undefined ion 45 ALARM SETUP e Select one of the alarm items The displayed value will be the one previously set e Press RANGE to select the range for the alarm and the corresponding range tag will blink e Press the CAL key to enter setup changing mode Set the new value using the arrow or the numerical keys Notes e While in setup changing mode press RANGE to select a different resolution if possible e g if 199 9 is displayed by pressing RANGE the value will change to 1999 if 19 9 is displayed nothing will happen if pressing RANGE Pressing CLEAR key the displayed item will be reset to the default value no Press NUM LOCK key to activate the numeri cal keys The SHIFT tag will blink e Press CFM to confirm the set value While in normal measurement mode e If only the AL LO item is set the instrument will beep wh
6. 20 of the default slope for the corresponding ion charge Default slope value mV decade 59 16 monovalent anion ion charge is 1 59 16 monovalent cation ion charge is 1 29 58 divalent anion ion charge is 2 29 58 divalent cation ion charge is 2 100 ion charge is undP To reset to the default values and clear calibra tion data press the CLEAR key during calibra tion The instrument will display the CLR mes sage and return to measurement mode 34 ONE POINT CALIBRATION To perform a single point calibration press CAL after the first calibration point has been confirmed The instrument will store the one point calibration data and return to normal measurement mode GLP GOOD LABORATORY PRACTICE GLP is a set of functions that allows data storage and retrieval about the electrode status and maintenance All data regarding pH relative mV and ISE calibrations are stored in the instrument memory CALIBRATION TIME OUT ALARM The instrument allows to set the number of days from 1 to 7 before the next required pH calibration The de fault setting is OFF disabled At start up the instrument checks if the calibration time out has expired If yes the CAL DUE message blinks to advise the user that a new calibration is required Note If the instrument was not calibrated or all cali bration data were cleared the CAL DUE message is displayed even if the feature is dis
7. ALIBRATION DATA Last relative mV calibration data are stored automati cally after a successful calibration To view the relative mV calibration data from relative mV measurement mode press SHIFT and then GLP key The instrument will display the date yyyy mm dd of the last calibration 40 Use the up arrow key to view all logged calibration pa rameters in the following sequence e Relative mV calibration offset and time hh mm as in pH GLP mode e Instrument ID as in pH GLP mode Notes e Press SHIFT and then GLP key at any moment to return to normal measurement mode e If calibration has not been performed the no CAL message will blink on the LCD GLP 1 Sur nn IU UN a Se CAL Zy KR TAN 7 41 SETUP Setup mode allows viewing and modifying the following parameters e Calibration time out alarm e One point calibration behavior e Custom buffer 1 e Custom buffer 2 e Ion charge AD1200 only e Alarm high limit e Alarm low limit e Temperature measure unit e Current date yyyy mm dd e Current time hh mm e Keyboard beep status e Instrument ID e To enter SETUP mode from measurement mode press SHIFT and then SETUP e Press CAL to change the item re value The selected item e g ma Da a f a W e g ceri hour while setting the time 7 u and CFM tag will blink 42 e Use the arrow keys to scroll the available values or insert the desired valu
8. E AD1200 only or ORP electrode and the temperature probe to the appropriate sockets on the rear panel For electrodes with separate refer ence connect the reference to the proper input socket e Attach the analog output to the proper connectors on the back of the instrument 13 INSTRUMENT START UP Turn the instrument on by pressing the ON OFF button All LCD tags are displayed and a beep is heard if beep is ON while the instrument performs a self test AutoLOG GLPSETUPMTC ATC mz CO T my ER 0000 0 a TEMP 8 gi Ae ppm CLEAR CAL The instrument will display the date on the primary LCD and the time on the secondary LCD and then it will enter the same measurement range as it was at power off pH MEASUREMENTS Make sure the instrument has been calibrated before taking pH measurements e Press RANGE to enter pH range Press RANGE again to change the pH ee measurement resolution 14 Immerse pH electrode tip and tempera ture probe approximately 4 cm into the solution to be tested Allow for the elec trode to stabilize and put the tempera ture probe tip as close as possible to the pH electrode lt 4cm The pH reading is displayed on the primary LCD and the temperature value on the secondary LCD gt 3 I pea hl Nur lanl D D K Ld Sia u em Pu a If measurements are taken successively in different samples it is recommended to rinse the electrode th
9. E key to select measurement unit or switch focused data 8 SHIFT key to activate the second function key 9 NUM LOCK key to active numerical keys 0 to 9 10 Down arrow key to manually decrease tempera ture value or other parameters 11 CFM key to confirm values 12 CAL SETUP key to enter exit calibration mode and to enter exit SETUP mode 13 Left arrow key to toggle between parameters while in SETUP mode backwards to toggle between ab solute mV and temperature while in relative mV mode and between pH buffer and temperature while in pH calibration mode Note To select second function press first SHIFT and then the desired key The SHIFT tag will appear on the LCD until the desired key is pressed To leave second function mode press SHIFT again Keyboard for AD1040 and AD1200 1 2 3 4 HOLD key to freeze the stable reading on the LCD Numerical keys only ON OFF key to turn the instrument ON and OFF Right arrow key to toggle between parameters while in SETUP mode forwards to toggle between absolute mV and temperature while in relative mV mode and between pH buffer and temperature while in pH calibration mode 10 Up arrow key to manually increase temperature value or other parameters CLEAR key to clear calibration data RANGE key to select measurement unit or switch focused data SHIFT key to activate the second function key 9 NUM LOCK key to active numerical keys
10. USER MANUAL Ww A AD1030 AD1040 AD1200 pH mV ISE Temperature Bench Meters KA AD 1200 pH mV ISE amp Temperature Meter CAL z CEM MEM NUM www adwainstruments com Dear Customer Thank you for choosing an Adwa product Please read carefully this manual before starting operations This instrument is in compliance with the EMC Directive 89 336 EEC and Low Voltage Directive 73 23 EEC for electrical equipments For additional technical information please e mail us at sales adwainstruments com TABLE OF CONTENTS Introduction un T 4 Technical Dala u ecnae ae ee aa 6 Front and Rear Panels iis sccsiscasereseaseertessrectiseacentveaveste 8 Operational Guide u a 13 PH Calibration cecscsecassssceeseessessvesstedestedacetaseeteessestane 20 Relative mV Calibration ccccceceeessseeeeeeseeeees 29 ISE Calibration AD1200 only 30 Good Laboratory Practice cei ceeeeeeeeeeseeseeeeeeees 35 SS LU o E A E E T T 42 Log on demand AD1040 and AD1200 e 48 l La lE EA EE ITE a Ra 53 Temperature Calibration for technical personnel only 54 mV Calibration for technical personnel only u 57 Analog Output 59 pH Electrode Conditioning amp Maintenance 60 Electrodes Probes and Solutions 63 Troubleshooting Guide 200220n nennen 64 INTRODUCTION AD1030 AD1040 and AD1200 are professional bench meters for pH ORP Oxid
11. UTIONS AD1131B AD1230B AD3230B AD7662 AD70004P AD70007P AD70010P AD7082 AD70300 Refillable pH electrode with glass body tip protection bottle BNC connector and 1 m cable pH electrode with Epoxy body tip pro tection bottle BNC connector and 1 m cable ORP electrode with Epoxy body tip protection bottle BNC connector and 1 m cable Stainless steel temperature probe with 1 m cable pH 4 01 buffer 20 ml sachet 25 pcs pH 7 01 buffer 20 ml sachet 25 pcs pH 10 01 buffer 20 ml sachet 25 pcs Refilling solution 3 5M KCl 4x30 ml Sorage solution 230 ml 63 TROUBLESHOOTING GUIDE Slow response excessive drift PROBLEM Dirty pH electrode SOLUTION Soak the electrode tip in deionized water for 30 min and then clean the electrode Readings fluctuate up and down noise Clogged dirty junction Low electrolyte level refillable electrodes only Clean the electrode Refill with fresh electrolyte refillable electrode only The display shows blinking dashes during pH measurements Out of range in the pH scale Make sure the pH sample is in the specified range Recalibrate Check the electrolyte level and the general state of the pH electrode The display shows blinking reading in measurement mode Reading out of range Electrode not connected Check the sample Connect the electrode Out of range in the mV scale Dry membrane juncti
12. approximately 4 cm into the third buffer solution and stir gently The temperature probe should be close to the pH electrode If necessary use the arrow keys to select a different buffer value The hourglass tag will blink on the LCD until the read ing is stable When the reading is stable and close to the selected buffer value the CFM tag appears Press the CFM key to confirm The instrument stores the calibration values and re turns to normal measurement mode 25 TWO POINT CALIBRATION Proceed as described in the Three point calibration section and press CAL after the second calibration point is accepted The instrument will memorize the calibra tion data and return to normal measurement mode ONE POINT CALIBRATION e Two setup options are available Pnt and OFFS e Ifthe Pnt option is selected the adjacent slopes will be reevaluated e If the OFFS option is selected an electrode offset correction is performed keeping unchanged the exist ing slopes Proceed as described in the Three point calibration section and press CAL after the first calibration point is accepted The instrument will memorize the single point calibration data and return to normal measure ment mode Notes e During calibration press RANGE or the right or left arrow keys to toggle between pH buffer and tempera ture reading on the secondary LCD 26 Each time a buffer is confirmed the new calibration
13. ation Reduction Po tential ISE AD1200 only and temperature measurements Relative mV readings are also pro vided Main features include e Up to three point calibration with seven memorized buffers pH 1 68 4 01 6 86 7 01 9 18 10 01 12 45 and two custom buffers e Calibration time out alarm e pH calibration using buffers with 0 001 resolution e pH readings with manual or automatic temperature compensation e Up to 50 samples for log on demand not for AD1030 e Two selectable alarm limits e Large easy to read LCD showing the pH ISE AD1200 only or mV and temperature simulta neously together with graphic symbols e HOLD feature to freeze the stable reading on the LCD e GLP feature not for AD1030 to view last calibra tion data for pH ISE and relative mV ranges Each model is supplied complete with e AD1131B refillable pH electrode with glass body BNC connector and 1 m cable e AD7662 stainless steel temperature probe with 1 m cable e pH 4 01 and pH 7 01 calibration buffers 20 ml sachet each e Electrode holder e 12 Vdc power adapter e User manual TECHNICAL DATA Range 2 00 to 16 00 pH 2 000 to 16 000 pH 2000 mV 0 001 to 19999 ppm AD1200 only 20 0 to 120 0 C 4 0 to 248 0 F Resolution 0 01 pH 0 001 pH 0 1mV 999 9 1 mV outside 0 001 ppm 0 001 to 9 999 0 01 ppm 10 00 to 99 99 0 1 ppm 100 0 to 999 9 1 ppm 1000 to 19999 AD1200 only 0 1 C 0 1 F Accura
14. cy 0 01 pH 0 002 pH 25 C 77 F 0 2 mV up to 699 9 mV 0 5 mV up to 999 9 mV 2 mV outside 0 5 f s for ISE AD1200 only 0 4 C 0 7 F excluding probe error Relative mV Offset 2000 mV Analog Output 2000 mV pH Calibration Up to 3 point calibration with 2 custom and 7 standard buffers pH 1 68 4 01 6 86 7 01 9 18 10 01 12 45 ISE Calibration Up to two point calibration AD1200 only 5 standard solutions available 0 1 1 10 100 1000 ppm Temperature Manual or automatic Compensation 20 0 to120 0 C 4 0 to 248 0 F pH Electrode AD1131B Temperature Probe AD7662 Input Impedance 10 Ohm Log on demand Up to 50 samples AD1040 amp AD1200 Environment 0 to 50 C 32 to 122 F RH max 95 non condensing Power Supply 12 Vdc adapter Dimensions 230 x 180 x 50 mm Weight 1 8 kg FRONT AND REAR PANELS Keyboard for AD1030 Q ACA AAC CAL 42 a m fe NUM CFM e nue sami HOLD key to freeze the stable reading on the LCD Numerical keys only ON OFF key to turn the instrument ON and OFF Right arrow key to toggle between parameters while in SETUP mode forwards to toggle between absolute mV and temperature while in relative mV mode and between pH buffer and temperature while in pH calibration mode 8 5 Up arrow key to manually increase temperature value or other parameters 6 CLEAR key to clear calibration data 7 RANG
15. e a week e After testing aggressive chemicals e If the CAL DUE message is blinking during mea surement PREPARATION Pour small quantities of the buffer solutions into clean beakers If possible use plastic or glass beakers to mini mize any EMC interferences For accurate calibration and to minimize cross contami nation use two beakers for each buffer solution the first one for rinsing the electrode and the second for calibra tion If you are measuring in the acidic range use pH 4 01 or 1 68 as second buffer If you are measuring in the alka line range use 10 01 9 18 or 12 45 as second buffer For extended range measurements acidic and alkaline perform a three point calibration by selecting three of the available buffers 20 PROCEDURE If 0 001 pH resolution is selected each selected stan dard buffer value can be updated accordingly with the value of the production lot certificate at 25 C 77 F From calibration mode when a standard pH buffer with 0 001 resolution is selected press SHIFT and then SETUP The buffer value will start blinking and it can be changed within a 0 020 pH window using the ar row keys The instrument allows to choose among 7 memorized pH buffers pH 1 68 4 01 6 86 7 01 9 18 10 01 12 45 and 2 custom buffers Custom buffers allow the user to calibrate using a solu tion with a pH value different from a standard one Up to two custom buffers can be set through the setup me
16. e with the numerical keys Note To activate the numerical keys press NUM LOCK The SHIFT tag will blink The new in troduced digit is always the last one and all pre vious digits will shift to left e To delete the digits press CLEAR key before entering the NUM LOCK mode e If another item has to be set u e g minutes press RANGE g mpa He or left right arrow key and the we men item will start blinking e Use the arrow keys to scroll the available values or insert the desired value with the numerical keys e Press CFM to confirm or CAL to escape e Use the arrow keys to select the next previous pa rameter e Press SHIFT and then SETUP to exit the setup menu at any time 43 The table below lists all available setup parameters their valid values and the factory settings default Item Description Valid values Default CALDUE Alarm time out OFF or 1 to 7 days OFF 1 Pnt l point cal behavior Pnt OFFS Pnt Custom C1 Custom buffer 1 2 00 to 16 00 pH no Custom C2 Custom buffer 2 2 00 to 16 00 pH no IonCG Ion charge undF 2 1 1 2 undF AL HI Alarm high limit pH mV Rel mV no ranges AL LO Alarm low limit pH mV Rel mV no ranges tEMP Temperature unit C E C Date Date yyyy mm dd 2000 01 01 to 2099 12 31 Time Time hh mm 00 00 to 23 59 bEEP Beep status ON OFF OFF In Id Instrument ID 0000 to 9999 0000 44 Notes e The custom buffers can be set only with 0 001
17. ed lot record or all lots Note Positions remain free in the log on demand lot by deleting the last logged sample or all lots e If the dEL All option was selected all logged data are deleted and the instrument returns to normal mea surement mode mr or 2 au r r e Press MEMRCL at any time to return to measure ment mode 52 HOLD To freeze a stable reading on the LCD press HOLD key from normal measurement mode The Auto and H tags will blink on the LCD until the reading stabilizes To T I gt pH ur eo am I mae Lt rs When the reading is stable the Auto and H tags stop blinking and the reading is frozen Press HOLD key again to return the normal measure ment mode Note Pressing RANGE the instrument will skip to the displayed range without leaving the HOLD mode The STORE key also holds HOLD mode Pressing MEM RCL key SHIFT and then SETUP or GLP the instrument leaves the HOLD mode and performs the selected function 53 TEMPERATURE CALIBRATION for technical personnel only The instruments are factory calibrated for temperature Adwa s temperature probes are interchangeable and no temperature calibration is needed when they are replaced If temperature measurements are not accurate tempera ture new calibration should be performed For an accurate recalibration contact your dealer or the nearest Adwa Custome
18. en the reading is below alarm low limit e If only the AL HI item is set the instrument will beep when the reading is above alarm high limit 46 e If both alarm items are set the instrument will beep when the reading is above alarm high limit or below alarm low threshold Note If the AL HI value is minor than or equal to the AL LO value the WRONG tag will blink 47 LOG ON DEMAND AD1040 and AD1200 This feature allows the user to log pH ISE AD1200 only and Rel mV measurements together with tem perature Up to 50 samples can be stored into the instrument memory LOGGING To store the current reading into memory press the STORE key from measurement mode The instrument displays the current date mm dd on the primary LCD while the secondary LCD shows the record number with the LOG tag blinking for a few seconds and then the number of free locations meet Loe 48 If there are less than 6 memory locations left the record number and the Lo message will blink for a few sec onds to alert the user and then the number of free loca tions is displayed If the logging space is full the FULL LOC message will be displayed for a few seconds together with the LOG tag blinking followed by the FrEE 0 message The instrument returns to normal measurement mode 49 VIEWING LOGGED DATA To retrieve the information stored press MEMRCL from mea
19. en the reading is stable and close to the selected calibration point the CFM tag starts blinking 55 e Press CFM to confirm The instrument returns to normal measurement mode Note If the reading is not close to the selected cali bration point the WRONG tag will blink Change the temperature probe and restart calibration 56 mV CALIBRATION for technical personnel only The instruments are factory calibrated for mV range Adwa s ORP electrodes are interchangeable and no mV calibration is needed when they are replaced If measurements are not accurate a mV recalibration should be performed For an accurate recalibration contact your dealer or the nearest Adwa Customer Service Center or follow the instructions below A two or three point procedure can be performed at 0 0 600 0 and 1800 0 mV e Attach a mV simulator with an accuracy of 0 1 mV to the BNC connector on the rear panel e With the instrument off press and hold the CFM amp STORE keys then power on the instrument The CAL tag lights up and the secondary LCD shows 0 0 mV e Set the simulator to 0 0 mV When the reading is stable and close to the selected calibration point the CFM tag starts blinking e Press CFM to confirm and the secondary LCD will display the second expected value 600 0 mV 57 e Set the simulator to 600 0 mV When the reading is stable and close to the selected calibration point the CFM tag starts blinking e Press CFM
20. il the reading becomes stable 4 cm e When the reading is stable and close to the selected standard the CFM tag starts blinking 32 Press CFM to confirm calibration The calibrated value will be displayed on the primary LCD and the second expected standard solution on the sec ondary LCD D It l am gr we Lo ur cJ 3 3 Note The instrument will automatically skip the stan dard value used for the first point After the first calibration point is confirmed immerse the ISE electrode approximately 4 cm into the second standard solution If necessary use the arrow keys to select a different standard solution The hourglass symbol will blink on the LCD until the reading becomes stable When the reading is stable and close to the selected standard the CFM tag starts blinking Press CFM key to confirm calibration The instrument stores the calibration data and returns to normal mea surement mode 33 Notes e If the mV value is out of the 2000 mV range the WRONG and BUFFER tags are dis played Check if the correct standard has been used or refresh the electrode by following the maintenance procedure described on page 60 If necessary change the standard solution or the electrode If the ion charge is not specified undF se lected in setup menu the slope window is be tween 20 mV and 105 mV If a ion charge value is set the slope value is between 50 and 1
21. nu The custom buffer value can also be changed within a 1 0 pH window around the set value For accurate measurements it is recommended to per form a three point calibration However at least a two point calibration is suggested The instrument will automatically skip the buffers already used and require a minimum difference of 0 2 pH unit between two buffers used for calibration 21 A new calibration will override existing stored calibra tion data The slopes adjacent to the calibration points will be reevaluated If the new calibration point has no correspondence in the existing stored calibration data it is simply added or the instrument will ask which buffer will be replaced by the current one If at least a two point calibration has been performed and an offset correction of the electrode is desired keep ing unchanged the existing slopes perform a one point calibration selecting the OFFS option in the setup menu If the Pnt option is selected the slopes adja cent to the calibration points will be reevaluated 22 THREE POINT CALIBRATION Immerse the pH electrode and the tem perature probe approximately 4 cm into a buffer solution of your choice pH 1 68 4 01 6 86 7 01 10 01 12 45 cus tom buffer 1 or 2 if set and stir gently The temperature probe should be close to the pH electrode Press CAL and the instrument will dis play the measured pH on the primary LCD and the 7 01 pH buffer
22. on 64 Soak in A70300 storage solution for at least one hour SYMPTOM PROBLEM SOLUTION The meter does Out of order Replace the probe not work with temperature probe temperature probe The meter fails to Broken or out of Replace electrode calibrate or gives order pH electrode faulty readings Explicit warnings Dirty broken pH Follow displayed are displayed electrode instructions during pH contaminated calibration reference or buffers At start up the One key is Check the keyboard meter displays full blocked or contact LCD permanently the vendor Long beep heard Key not working when a key is in current mode pressed End of range reached with the arrow keys Digits can not be Maximum value Delete digits introduced with reached for the numeric keys corresponding range 65 66 ADWA INSTRUMENTS Kft Als kik t sor 11 6726 Szeged Hungary Tel 36 62 317 878 Fax 36 62 550 610 e mail sales adwainstruments com www adwainstruments com MANAD 1040 09 14
23. ontinues the procedure The points already confirmed for the current calibration are not deleted Note If CLEAR is pressed during the first calibration point the instrument returns to measurement mode RELATIVE mV CALIBRATION e Press CAL from relative mV measurement mode The relative mV value is displayed on the primary LCD and the absolute mV value on the secondary LCD e If desired change the displayed relative mV value using the arrow or the numerical keys press NUM LOCK to activate them Notes e Press RANGE to change the resolution of the displayed value if possible e g 199 9 will change to 1999 while 19 9 will not change e If CLEAR is pressed outside NUM LOCK mode the displayed value is set to 0 0 mV 29 e Press NUM LOCK again to leave the numeri cal keys e When the reading is stable and the relative mV offset is within the offset window 2000 mV the CFM tag will be displayed e Press CFM to confirm relative mV calibration The instrument will return to measurement mode e If the absolute mV reading is out of range or the rela tive mV offset is outside the offset window the WRONG tag will blink To complete the calibration procedure the input value or the relative mV offset has to be changed ISE CALIBRATION AD 1200 only For greatest accuracy it is recommended to calibrate the instrument frequently Due to electrode conditioning time keep the electrode immersed for a few seconds in the
24. or oughly with deionized or tap water and then with some of the next sample This will prevent cross contami nations and condition the electrode before immersing it into the solution to be tested The pH reading is affected by temperature In order to measure the pH accurately the temperature effect must be compensated for 15 To use the ATC Automatic Temperature Compensa tion capability of the instrument connect the AD7662 temperature probe immerse it into the sample as close as possible to the pH electrode and wait for a few seconds If the sample solution temperature is known MTC Manual Temperature Compensation can be per formed by disconnecting the temperature probe The display will show the default temperature of 25 C or 77 F or the last temperature reading with the C or F tag blinking The temperature can be adjusted using the arrow keys from 20 0 to 120 0 C or from 4 0 to 248 0 F 16 ORP mV MEASUREMENTS Oxidation reduction potential REDOX measurements provide the quantification of the oxidizing or reducing power of the tested sample To correctly perform a redox measurement the surface of the ORP electrode must be clean and smooth Press RANGE to enter the mV range Immerse the ORP electrode tip 4 cm into the solution to be tested and wait a few seconds for the reading to stabilize 4cm lt The instrument displays the mV reading on the pri mary LCD and the tempe
25. parameters replace the old data of the corresponding buffer If current confirmed buffer has no correspondence in the stored calibration it will be added to the existing calibration data If the stored calibration is a three point procedure the instrument will ask which buffer should be replaced gt m d m cr IM AL a Cal Point Ww 2 ut f pH Lt c Use the arrow keys to select the buffer to be replaced then press CFM to confirm or CAL to exit calibration without replacing 27 CUSTOM BUFFERS If at least one custom buffer was set in SETUP menu it can be selected for calibration using the arrow keys Press SHIFT and then SETUP key if you want to adjust the buffer value The buffer value displayed on the sec ondary LCD will start blinking i ATC sk A m jr u Ro l Li Li pH am u am a CAL Cal Point Custom X 1 Use the ARROW keys to change the buffer value After about 5 seconds the last change has been per formed the buffer value is updated and the meter exit from the changing mode Press SHIFT and then SETUP key if you want to change again the value Note Custom buffer value can be adjusted in a 1 00 pH window around the set value 28 CLEAR CALIBRATION If the CLEAR key is pressed at any time during calibration the CLEAR CAL tag lights up and the donE message is displayed on the secondary LCD All previous calibrations are cleared and the instrument c
26. r Service Center or follow the instructions below Prepare a vessel containing ice and water and an other one containing hot water at approximately 50 C 122 F Place insulation material around the vessels to minimize temperature drift Use a calibrated thermometer with a resolution of 0 1 C or 0 1 F as reference thermometer Connect the supplied AD7662 temperature probe to the appropri ate socket on the rear panel With the instrument off press and hold the CAL amp up arrow keys then power on the instrument The CAL tag lights up and the secondary LCD shows 0 0 C or 32 0 F The primary LCD will display the measured temperature or if the reading is out of range 54 Immerse the temperature probe into the vessel with ice and water as close as possible to the reference thermometer Allow a few seconds for probe thermal stabilization Use the arrow keys to set the reading on the second ary LCD to that measured by the reference thermom When the reading is stable and close to the selected calibration point the CFM tag starts blinking Press CFM to confirm The secondary LCD will display 50 0 C or 122 0 F Immerse the temperature probe into the second ves sel as close as possible to the reference thermometer Allow a few seconds for probe thermal stabilization Use the arrow keys to set the reading on the second ary LCD to that of the hot water measured by the reference thermometer Wh
27. rature on the secondary LCD ed al Ba Cac che If reading is out of range the closest full scale value will blink on the primary LCD 17 RELATIVE mV MEASUREMENTS To enter relative mV mode press RANGE The relative mV reading will be displayed on the primary LCD and the current temperature value on the secondary LCD Note Press the right or left arrow key to toggle be tween temperature and absolute mV reading on the secondary LCD The relative mV reading is equal to the difference be tween the absolute mV input value and relative mV off set established in the relative mV calibration 18 ISE MEASUREMENTS AD1200 only To measure the ion concentration enter the ISE mode by pressing RANGE Immerse the tip of the ISE electrode 4 cm into the solution to be tested and wait a few seconds for stable reading The instrument will display the ppm reading on the primary LCD and the temperature on the secondary LCD in um Bu m va aay ppm coc TEMPERATURE MEASUREMENTS Connect the AD7662 temperature probe to the appropriate socket immerse the probe into the solution and allow the read ing to stabilize lt 4cm Note The temperature can be displayed in Celsius C or Fahrenheit F degrees see Setup section for details 19 pH CALIBRATION The instrument should be recalibrated e Whenever the pH electrode is replaced e At least onc
28. solution to be tested To make the calibration a simple and error free proce dure the user will be guided step by step during calibra tion with easy messages on the display 30 PREPARATION e Set the proper ion charge through the setup item TonCG Note If the undF option is selected in setup menu the calibration must be a two point procedure If the user try to exit the calibration mode after confirming the first point the message ap pears on the LCD e Pour small quantities of the standard solutions into clean beakers If possible use plastic beakers to minimize any EMC interferences e For accurate calibration and to minimize cross con tamination use two beakers for each standard solu tion the first one for rinsing the electrode and the sec ond for calibration PROCEDURE One and two point procedures are available with five memorized standard solutions 0 1 1 0 10 100 1000 ppm e Press RANGE to enter the ISE mode oN 31 TWO POINT CALIBRATION e Immerse the ISE electrode approxi mately 4 cm into the first standard so lution and stir gently e Press CAL key The primary LCD will display the ppm value using current off EA set and slope e The CAL and Cal Point 1 tags light up and the 0 1 ppm standard value is shown on the secondary LCD e If necessary use the arrow keys to select a different standard solution e The hourglass symbol will blink on the LCD unt
29. surement mode If no data were logged the no rEC message blinks on the LCD LOG D ins Fu o rr EAS ni 1y ee cm 4 Otherwise the instrument displays the memorized pH relative mV or ppm AD1200 only reading and the lot number LOG _ 1 l ll i dii pH D r Pressing SHIFT and then SETUP key while in memory recall mode the secondary LCD will toggle between the LdM indication and the record number Use the arrow keys to select a different record 50 Press RANGE or right arrow key to scroll all logged parameters displayed as shown in the table below Parameter Primary LCD Secondary LCD mV mV reading Temperature TIME Hour amp minutes Seconds DATE Year Month amp day OFFSET Offset value LdM or record number SLOPE Slope value LdM or ion charge ISE range Notes e To view the previous logged parameter press the left arrow key e In relative mV memory recall mode the offset value is not available and the display shows dashes e The record number is an identification number for the logged sample After scrolling all logged pa 106 j rameters the meter displays d L the dEL message together with the LdM indication 1 ut m 51 Note Pressing SHIFT and then SETUP key the in strument toggles between lot and record num ber or all lots e Press CLEAR to delete the select
30. to confirm The secondary LCD will dis play the third expected value 1800 mV e Set the simulator to 1800 0 mV When the reading is stable and close to the selected calibration point the CFM tag starts blinking e Press CFM to confirm The instrument returns to mea surement mode Notes e If the reading is not close to the selected point the WRONG tag will blink Verify the calibra tion conditions or contact your dealer if calibra tion can not be performed e To return to normal measurement mode press CAL at any moment during calibration e If the calibration procedure is ended after the 600 0 mV point is confirmed the meter returns to normal measurement mode and stores a 2 point calibration data 58 ANALOG OUTPUT For the full range of each measurement the analog out put varies from 2000 to 2000 mV 59 pH ELECTRODE CONDITIONING amp MAINTENANCE Fill Hole a PREPARATION PROCEDURE Remove the pH electrode protective cap DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT This is normal with electrodes and they will disappear when rinsed with water During transport tiny bubbles of air may form inside the glass bulb affecting proper functioning of the electrode These bubbles can be removed by shaking down the electrode as you would do with a glass thermometer If the bulb and or junction are dry soak the electrode in AD70300 storage solution for at least one hour 60 For refillable electrodes
31. y shows OFF if the feature is dis abled orthe days remain ri ing before the calibration LI alarm will be activated paf e g 5 days or after the on 3 calibration is expired e g 3 days The instrument ID GLP 38 LAST ISE CALIBRATION DATA AD 1200 only Last ISE calibration data are stored automatically after a successful calibration To view the ISE calibration data from ISE measure ment mode press SHIFT and then GLP key The instru ment will display the date yyyy mm dd of last calibration Use the up arrow key to view all logged calibration pa rameters in the following sequence e ISE calibration time as in pH GLP mode e ISE calibration slope mV decade on the primary LCD and ion charge on the secondary LCD GLP zn ae MI LiL e First ISE calibration buffer on the primary LCD and corresponding mV value on the secondary LCD i IL CAL Fa F GLP 1 I Nie JAU Lo CAL Gal Point ts 39 e Second ISE calibration buffer on the primary LCD and corresponding mV value on the secondary LCD GLP Da am ml r 3 Cal Point CAL 3 La ad om z Notes e Ifa single point calibration is performed after a two point calibration the instrument will keep the old slope e The no bUF message means that calibration was performed at one point e The instrument ID as in pH GLP mode LAST RELATIVE mV C
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