Metrohm 726 Titroprocessor User Manual

CH-9101 Herisau/SwitzerlandPhone +41 71 353 85 85Fax +41 71 353 89 01EMail [email protected]://www.metrohm.ch726 TitroprocessorProgram version 5.

1.3 Instrument description726 Titroprocessor, Instructions for use441.3.3 Rear view01ACC21Bar Remote PrinterType 1.726.0010External BusDos. A1Dos. A2

6.2 Sample siloSample silo726 Titroprocessor, Instructions for use9494The individual silo columns:Pointer column The output pointer '<' m

6. Sample data and sample silo726 Titroprocessor, Instructions for use9595[<-- Out sets the output pointer '<' to the silo line selec

6.2 Sample siloSample silo726 Titroprocessor, Instructions for use9696Sample identificationThe sample identification names and types of field can be c

6. Sample data and sample silo726 Titroprocessor, Instructions for use9797Data output in the current sample dataThe output pointer (<) marks the s

7.1 General726 Titroprocessor, Instructions for use98987 Titration and measuring modes7.1 GeneralThe 726 Titroprocessor carries out all the individua

7. Titration and measuring modes726 Titroprocessor, Instructions for use9999Report printout• report blocks freely combinable over a wide range for p

7.2 DET Dynamic equivalence point titration726 Titroprocessor, Instructions for use1001007.2 DET Dynamic equivalence point titrationApplication:D

7. Titration and measuring modes726 Titroprocessor, Instructions for use101101Three predefined sets of parameters, which can be further optimized, ar

7.2 DET Dynamic equivalence point titration726 Titroprocessor, Instructions for use102102pH = pK + log(aB/aA)If aB = aA, then pH = pK.The pK value d

7. Titration and measuring modes726 Titroprocessor, Instructions for use1031037.3 MET Monotonic equivalence point titrationApplication:MET modes a

11. Introduction. Introduction726 Titroprocessor, Instructions for use551.3.5 Measuring interfaces / Measuring inputsThe 726 Titroprocessor models 2

7.3 MET Monotonic equivalence point titration726 Titroprocessor, Instructions for use104104V [mL]U [mV]MET: Monotonic titrationReagent addition:cons

7. Titration and measuring modes726 Titroprocessor, Instructions for use1051057.3.5 Evaluation of pK and HNP valuesFrom the data of the titration cu

7.4 SET Titration to a preset endpoint726 Titroprocessor, Instructions for use1061067.4 SET Titration to a preset endpointApplication:SET modes a

7. Titration and measuring modes726 Titroprocessor, Instructions for use107107Within the control range the dosing speed depends on the control differ

7.5 SEC Endpoint conditioning726 Titroprocessor, Instructions for use108108Observation Possible causes and remedies"Overshoots". Titrationis

7. Titration and measuring modes726 Titroprocessor, Instructions for use109109Example:SEC_U* SEC_U* ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿¿CTRL_RS1 ... |

7.6 KFT Karl Fischer titrations726 Titroprocessor, Instructions for use1101107.6 KFT Karl Fischer titrationsApplication:The KFT modes are rapid t

7. Titration and measuring modes726 Titroprocessor, Instructions for use111111In IPOL measurements steep curves are obtained; in UPOL measurementsthe

7.6 KFT Karl Fischer titrations726 Titroprocessor, Instructions for use112112What to do if ...Observation Possible causes and remediesFinal addition

7. Titration and measuring modes726 Titroprocessor, Instructions for use1131137.7 KFC Karl Fischer conditioningApplication:The KFC modes are indepen

1.3 Instrument description726 Titroprocessor, Instructions for use66SRAM cards can be read and written on.Capacity: 128 KB (Order no. 6.2245.010) to 2

7.8 MEAS Extended measuring functions726 Titroprocessor, Instructions for use1141147.8 MEAS Extended measuring functionsApplication:MEAS modes ar

7. Titration and measuring modes726 Titroprocessor, Instructions for use115115TimeDriftWaiting periodMeasurement driftmVMinSampling time7.8.3 Multip

7.9 CAL Calibration of pH sensors726 Titroprocessor, Instructions for use1161167.9 CAL Calibration of pH sensorsApplication:The calibration of a

7. Titration and measuring modes726 Titroprocessor, Instructions for use117117• 1-point calibration: the relative slope is set at 1 and the position

7.10 Calculations / Formulas726 Titroprocessor, Instructions for use1181187.10 Calculations / Formulas10 calculation formulas can be defined for each

7. Titration and measuring modes726 Titroprocessor, Instructions for use119119Remark Formula name11 charactersEach formula can be given any name. The

7.10 Calculations / Formulas726 Titroprocessor, Instructions for use120120stat. The result enters the statistics.live The result is shown in the trace

7. Titration and measuring modes726 Titroprocessor, Instructions for use121121IM Initial measured value (unit depends on mode)SM Measured value after

7.10 Calculations / Formulas726 Titroprocessor, Instructions for use122122The test function TST( , )If invalid values should occur during a calculatio

7. Titration and measuring modes726 Titroprocessor, Instructions for use1231237.11 ReportsSeparate reports can be defined for each mode and handled

11. Introduction. Introduction726 Titroprocessor, Instructions for use771.4 The keyboardENTERNEXTDELAYSKIPLINEFEED MANCONTROL?><|":+)(*&a

7.11 Reports726 Titroprocessor, Instructions for use124124MP_List Measuring point listCalc. Calculation report with formulasRawData Raw data report fo

7. Titration and measuring modes726 Titroprocessor, Instructions for use125125send Report output via an RS 232 interfaceyes | noA report can be trans

7.11 Reports726 Titroprocessor, Instructions for use126126Example of a volume curve:ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use1271278 Command ReferenceA method comprising various commands can be p

8.2 DET726 Titroprocessor, Instructions for use1281288.2 DETThere is a choice of four different DET modes for controlled titrations withdynamic volum

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use129129Assignment parameters of the DET modes:comment Comment on titrat

8.2 DET726 Titroprocessor, Instructions for use130130Meas. input Sensor input(A1,A2, Apol, Adiff, B1, B2, Bpol, Bdiff)The measuring inputs A1, A2 and

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use131131The various conditions governing the discontinuation of initial

8.2 DET726 Titroprocessor, Instructions for use132132Dos. rate Dosing rate of initial dosing0.01 mL/min…150 mL/min | max.The maximum dosing rate will

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use133133Titration conditionsThese are the actual titration parameters th

1.4 The keyboard726 Titroprocessor, Instructions for use881.4.3 Action keysNEXTDELAYSKIPSTARTSTOPHOLDCONTThe action key have an immediate effect on t

8.2 DET726 Titroprocessor, Instructions for use134134Time recording Recording measuring timeon | offTo record the titration curve on the axis of time

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use135135It is preferable to select a relative stop volume when theprimar

8.2 DET726 Titroprocessor, Instructions for use136136Mpt. overflow Discontinuation: full measuring point liston | offIf 'on' is selected, ti

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use137137Buret cylinder max. rate1 mL 3 mL/min2 mL 6 mL

8.2 DET726 Titroprocessor, Instructions for use1381388.2.3 EP recognitionIf there is a possibility of several equivalence points occurring in one tit

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use139139 dMW/dV[ERC]V[mL]20min. EPC 570EP1EP2EPC 1EPC 2

8.2 DET726 Titroprocessor, Instructions for use140140pK/HNP Evaluation pK value and half neutralization potentialon | offWhen the pK/HNP evaluation fu

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use141141Fix end points End points with pre-set measured valuesIt may be

8.2 DET726 Titroprocessor, Instructions for use142142Quantity X_Axis Display unit on the X-axisVolume | TimeTitration curves can be displayed against

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use1431438.3 METThere is a choice of four different MET modes for contro

11. Introduction. Introduction726 Titroprocessor, Instructions for use99INSHOMEPG UPDEL END PG DN<PG UP> moves the field cursor in the sample si

8.3 MET726 Titroprocessor, Instructions for use144144The parameters of the monotonic titration modes coincide with those of theDET modes, see page130f

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use145145Signal drift Limits for signal driftwith MET_PH/U/IPOL: 0,5…50…9

8.3 MET726 Titroprocessor, Instructions for use146146ÚÄÄÄ EP Recognition ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³

88. . Command ReferenceCommand Reference726 Titroprocessor, Instructions for use1471478.3.4 Curve displayThe settings for the curve display are valid

8.4 SET726 Titroprocessor, Instructions for use1481488.4 SETFour different SET modes are available for rapid controlled titrations to apreset endpoin

8. Command reference8. Command reference726 Titroprocessor, Instructions for use149149Start conditionsThe start conditions correspond to those of the

8.4 SET726 Titroprocessor, Instructions for use150150The [Custom adjust] softkey opens a further dialogwindow in which user-defined settings can be ca

8. Command reference8. Command reference726 Titroprocessor, Instructions for use151151Derivation Recording the 1st derivative of the titration curveon

8.4 SET726 Titroprocessor, Instructions for use152152controlled addition will be carried out throughout thewhole titration.U[mV]V[mL]EPDynamicsMin. ra

8. Command reference8. Command reference726 Titroprocessor, Instructions for use153153Stop crit. Switch-off modeDrift | time | noneThe stop criterion

1.4 The keyboard726 Titroprocessor, Instructions for use1010Entry of special charactersEntry of special charactersIn the editing mode any character co

8.5 SEC726 Titroprocessor, Instructions for use1541548.5 SECConditioning to a preset endpoint is implemented as an independent mode.Its own set of pa

8. Command reference8. Command reference726 Titroprocessor, Instructions for use155155* ITD= Intermediate titration duration, time between conditionin

8.5 SEC726 Titroprocessor, Instructions for use156156Adjustment Predefined parameter setsslow | medium | fastA selection can be made from three differ

8. Command reference8. Command reference726 Titroprocessor, Instructions for use157157tion and to output it as a temperature curve. numerical manual

8.6 KFT726 Titroprocessor, Instructions for use1581588.6 KFTTwo different KFT modes are available for titrimetric water determinationwith Karl Fische

8. Command reference8. Command reference726 Titroprocessor, Instructions for use159159Start conditionsHere the conditions which must be fulfilled for

8.6 KFT726 Titroprocessor, Instructions for use160160buret cylinders; however, when the method is carried outthe dosing speed will automatically be re

8. Command reference8. Command reference726 Titroprocessor, Instructions for use161161End-point Target endpointfor KFT_IPOL* -2000…250…2000 mVfor KFT

8.6 KFT726 Titroprocessor, Instructions for use162162sible to record the temperature throughout a titration and tooutput it as a temperature curve. n

8. Command reference8. Command reference726 Titroprocessor, Instructions for use163163Volume Definition of the stop volumeabsolute | relative | offThe

11. Introduction. Introduction726 Titroprocessor, Instructions for use11111.5 Dialog1.5.1 Dialog overviewThe user dialog of the 726 Titroprocessor c

8.6 KFT726 Titroprocessor, Instructions for use164164Stop time Absolute titration duration1…9999 s | offThe titration will be terminated when the defi

8. Command reference8. Command reference726 Titroprocessor, Instructions for use165165Min. increment Smallest possible volume step0.1…9.99 µL | minIn

8.6 KFT726 Titroprocessor, Instructions for use166166Stop drift Volume drift for titration termination1…20…999 µL/minAfter the last addition (…and aft

8. Command reference8. Command reference726 Titroprocessor, Instructions for use1671678.7 KFCConditioning for a Karl Fischer titration is implemented

8.7 KFC726 Titroprocessor, Instructions for use168168KFC modes produce the following system variables:COV conditioning volume; reagent consumption for

8. Command reference8. Command reference726 Titroprocessor, Instructions for use169169fer to the numerical measured value alterations. The controldire

8.7 KFC726 Titroprocessor, Instructions for use170170A value up to 150 mL/min can also be entered for smallerburet cylinders; however, when the method

8. Command reference8. Command reference726 Titroprocessor, Instructions for use1711718.8 MEASÚÄÄÄ Methode: NEW.mth ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

8.8 MEAS726 Titroprocessor, Instructions for use172172The measuring parametersMEAS_PH* potent. or volta-/amperometric measurement Senso

8. Command reference8. Command reference726 Titroprocessor, Instructions for use173173Equilibr.time Max. delay period before measurement acceptance0.1

1.5 Dialog726 Titroprocessor, Instructions for use12121.5.3 The trace windowDuring the course of a method the display windows of the application note

8.8 MEAS726 Titroprocessor, Instructions for use174174MEAS_T* Temperature measurement Sensor

8. Command reference8. Command reference726 Titroprocessor, Instructions for use175175Data acquisitionDepending on the selected measuring procedure, d

8.8 MEAS726 Titroprocessor, Instructions for use176176ÚÄÄÄ MEAS_PH* Parameters ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³

8. Command reference8. Command reference726 Titroprocessor, Instructions for use177177Stop val. Measured value for terminating the meas. seriesfor MEA

8.9 CAL726 Titroprocessor, Instructions for use1781788.9 CALAutomated calibration of pH electrodes is possible as well as manual cali-bration. Indivi

8. Command reference8. Command reference726 Titroprocessor, Instructions for use179179This measured value drift control can be switched off('off&

8.9 CAL726 Titroprocessor, Instructions for use180180The temperature can be included in formulas for calcu-lations (see page 118ff). The different sys

8. Command reference8. Command reference726 Titroprocessor, Instructions for use181181possible to enter other values.If no buffer value is entered the

8.9 CAL726 Titroprocessor, Instructions for use182182The simplest form of an automatic calibration loop could look like this:Command Parameters

8. Command reference8. Command reference726 Titroprocessor, Instructions for use1831838.10 Sample changer commandsÚÄÄÄÄÄÄÄÄÄÄÄ¿³Titration >³³Chang

11. Introduction. Introduction726 Titroprocessor, Instructions for use1313The shortcut keys of the rightmost key column on the keyboard allow directac

8.10 Sample changer commands726 Titroprocessor, Instructions for use184184when processing the CHANGER command the samplechanger will be initialized ag

8. Command reference8. Command reference726 Titroprocessor, Instructions for use185185On beaker error Behavior with missing sample beakerMOVE_S | disp

8.10 Sample changer commands726 Titroprocessor, Instructions for use186186Value Numerical value of alteration or allocation0…1…999The numerical value

8. Command reference8. Command reference726 Titroprocessor, Instructions for use187187Special beaker Name of special beaker8 charactersThe special bea

8.10 Sample changer commands726 Titroprocessor, Instructions for use188188PUMP Pump controlDifferent pumps can be controlled depending on the sample c

8. Command reference8. Command reference726 Titroprocessor, Instructions for use189189Stirring rate Stirrer speed1…15 | offThe stirring speed of each

8.10 Sample changer commands726 Titroprocessor, Instructions for use190190During the first run of the method the commands in the (OMOVE…)OMOVE sequenc

8. Command reference8. Command reference726 Titroprocessor, Instructions for use1911918.11 Dosing commandsThe dosing commands allow various auxiliary

8.11 Dosing commands726 Titroprocessor, Instructions for use192192Dos. rate Addition speed0.01 mL/min…150 mL/min | max.The maximum dosing speed depend

8. Command reference8. Command reference726 Titroprocessor, Instructions for use193193ADD_R Adding a relative volumeThe ADD_R command allows a calcula

Table of contentTable of content726 Titroprocessor, Instructions for use1 Introduction 11.1 Range of applications _____________________________ 11.2 A

1.6 How to edit726 Titroprocessor, Instructions for use1414Example:To change the destination memory of data files for use with the auto savefunction,

8.12 CASE sequences726 Titroprocessor, Instructions for use194194Dos. drive Dosing driveDosing drive address(A1…A4, B1…B4, C1…C4)The connection socket

8. Command reference8. Command reference726 Titroprocessor, Instructions for use195195Command Parameters ParametersÄÄÄÄÄÄÄÄÄÄÄÄÄ

8.12 CASE sequences726 Titroprocessor, Instructions for use196196CASE Conditional execution of a command blockThe CASE command defines the condition w

8. Command reference8. Command reference726 Titroprocessor, Instructions for use197197Examples:CASE R1>98 (result R1 must be larger than 98)CASE

8.12 CASE sequences726 Titroprocessor, Instructions for use198198Example of a method with interlaced CASE:In this case a simple check of the sample we

8. Command reference8. Command reference726 Titroprocessor, Instructions for use1991998.13 Communication functions³COMM >³³AUX ÚÄÄÄÄÄÄÄÄ¿ÀÄ

8.13 Communication functions726 Titroprocessor, Instructions for use200200The assignment of the logical input and output lines on the pin occupancyof

8. Command reference8. Command reference726 Titroprocessor, Instructions for use201201Input 7 6 5 4 3 2 1 0Bit 7 6 5 4

8.13 Communication functions726 Titroprocessor, Instructions for use202202Pattern Bit pattern for status of lines8 characters (0 | 1 | *)The 8 or 14 o

8. Command reference8. Command reference726 Titroprocessor, Instructions for use203203be defined for the communications interface as their operation c

22. . InstallationInstallation726 Titroprocessor, Instructions for use15152 Installation2.1 Instrument setupPackagingThe 726 Titroprocessor is suppli

8.13 Communication functions726 Titroprocessor, Instructions for use204204message. In this case it is advisable to pick up such a message with theSCAN

8. Command reference8. Command reference726 Titroprocessor, Instructions for use2052058.13.4 Other communication commandsFurther communication comman

8.14 Auxiliary commands726 Titroprocessor, Instructions for use2062068.14 Auxiliary commands³COMM >³³AUX >³ÀÄÄÄÄÄÄÄÄÄÄÚÄÄÄÄÄÄ¿

8. Command reference8. Command reference726 Titroprocessor, Instructions for use207207This also applies when the sample silo is being used. Inthis cas

8.14 Auxiliary commands726 Titroprocessor, Instructions for use208208t/s Command Parameters ParametersÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄ

8. Command reference8. Command reference726 Titroprocessor, Instructions for use209209The line time entry controls the run. No line time entry has the

8.14 Auxiliary commands726 Titroprocessor, Instructions for use210210Command Parameters ParametersÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

8. Command reference8. Command reference726 Titroprocessor, Instructions for use211211Meas. interface Stirrer connection addressA | BThe Titroprocesso

9.1 Results page726 Titroprocessor, Instructions for use2122129 Results and statisticsWhen a determination has been completed the calculations which h

9. Results and statistics726 Titroprocessor, Instructions for use213213In the results window all necessary alterations for re-evaluations can becarri

2.3 Mains connection726 Titroprocessor, Instructions for use1616WARNING - Fire Hazard -with the same type and rating of fuseFor continued protection r

9.1 Results page726 Titroprocessor, Instructions for use214214[*Param] allows the EP recognition criteria and the curve display tobe processed.ÚÄÄÄÄÄÄ

9. Results and statistics726 Titroprocessor, Instructions for use215215[File] opens the file dialog window for storing or loadingdetermination files.

9.1 Results page726 Titroprocessor, Instructions for use216216The results are organized in columns which are arranged in the sequence ofthe occurrence

9. Results and statistics726 Titroprocessor, Instructions for use2172179.2 The <RESULT> keyAn alternative view of the results is offered by th

10.1 SingleSingle curves726 Titroprocessor, Instructions for use21821810 Curves and re-evaluation10.1 Single curvesBy pressing the [Show curves] soft

10. Curves and re-evaluation726 Titroprocessor, Instructions for use219219[Add curves] shows the selection list for similar types of determinationcon

10.1 SingleSingle curves726 Titroprocessor, Instructions for use220220[Sample data] opens an entry window for altering the sample data.ÚÄÄÄ Sample dat

10. Curves and re-evaluation726 Titroprocessor, Instructions for use221221The <é> or <ê> keys switch the graphics cursor off again.These

10.3 CurveCurve presentation726 Titroprocessor, Instructions for use222222• Hold down the <ññ> (Shift) key and press the cursor key <é> o

10. Curves and re-evaluation726 Titroprocessor, Instructions for use223223The selection of quantities on the Y-axis:M. value pH, mV or µA (depending

22. . InstallationInstallation726 Titroprocessor, Instructions for use17172.3.2 Mains cable and mains connectionThe instrument is supplied with one o

10.4 Re-evaluationRe-evaluation726 Titroprocessor, Instructions for use224224Grid Titration curve gridon | offThe titration curve grid is only shown o

11. File manager726 Titroprocessor, Instructions for use22522511 File manager11.1 File listThe file manager of the Titroprocessor 726 is a useful to

11.2 File operations726 Titroprocessor, Instructions for use226226ÚÄÄÄ File manager: Data card ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³ La

11. File manager726 Titroprocessor, Instructions for use227227[Send opens the selection list for selection of the RS232 to RS] interface via which th

11.4 File backup726 Titroprocessor, Instructions for use228228• If the card already has the correct file system then it can be formattedwith the [For

11. File manager726 Titroprocessor, Instructions for use229229• If problems occur during data reception it may be necessary todeactivate the FIFO bu

12.1 Error messages726 Titroprocessor, Instructions for use23023012 Troubleshooting12.1 Error messagesError messages are accompanied by the name of t

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use231231ARITHMETICARITHMETIC 1: unexpected arithmetic error, code: XXXXAn

12.1 Error messages726 Titroprocessor, Instructions for use232232CHANGER 4: no rack code found for changer 'X'No magnet code can be read in

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use233233CHANGER 17: illeg. rack and swing head combination, changer '

2.4 Data card handling (PC cards)726 Titroprocessor, Instructions for use18182.4 Data card handling (PC cards)The 726 Titroprocessor can write data o

12.1 Error messages726 Titroprocessor, Instructions for use234234CHANGER 29: changer 'X' error; Key[Reset]-->MAN CONTROLThere is a sample

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use235235CURVE_REPCURVE_REP 1: curve printing not possibleData required for

12.1 Error messages726 Titroprocessor, Instructions for use236236DATA CARD 9: file name not foundThe file mentioned cannot be accessed. Either the fil

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use237237DETSTOREDETSTORE 1: Corrupt memory detected. Continue anyway ?The

12.1 Error messages726 Titroprocessor, Instructions for use238238DIAGNOSISIf error messages occur during diagnosis please contact the service de-partm

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use239239DIALOG 14: incomplete parametersNot all the parameters required fo

12.1 Error messages726 Titroprocessor, Instructions for use240240DOSING 21: XX busy or not corresponding settingsDosing drive XX is not answering at t

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use241241FILEFILE 1: wrong file type "XXXXXXXX"The selected file

12.1 Error messages726 Titroprocessor, Instructions for use242242GLP DATAGLP DATA 1: service interval expired, servicing requiredThe set service inter

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use243243MALLOCMALLOC 1: last powerdown left inconsist. status. Continue an

22. . InstallationInstallation726 Titroprocessor, Instructions for use1919Data card insertion and removal• The data card can only be inserted in den

12.1 Error messages726 Titroprocessor, Instructions for use244244MAN_CAL 4: buffer out of toleranceThe buffer value found is outside the tolerance ran

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use245245MEAS/CALMEAS/CAL 1: cycle time too shortThe selected measuring int

12.1 Error messages726 Titroprocessor, Instructions for use246246MEAS.INP. 4: meas.input 'X': missing A/D-Converter calib. dataCalibration d

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use247247METHOD 8: incomplete (OMOVE sequence, see line XXThe start sequenc

12.1 Error messages726 Titroprocessor, Instructions for use248248MONITORING 4: auto save aborted; XXX bytes neededThere is too little space available

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use249249PRINTERPRINTER 1: printer off-line or defectThe printer does not a

12.1 Error messages726 Titroprocessor, Instructions for use250250RECOGN 4: enter value for EP-window "X" from...RECOGN 5: enter value for EP

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use251251For connection problems with external instruments please obtain ad

12.1 Error messages726 Titroprocessor, Instructions for use252252SCAN+CTRLSCAN+CTRL 1: Remote interface X not presentThe selected 'Remote' i

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use253253STORAGE 10: terminate "KeyCTRL mode" firstFor the requir

2.5 Safety information726 Titroprocessor, Instructions for use20202.5 Safety informationIf failure or malfunctioning occurs during operation of the 7

12.1 Error messages726 Titroprocessor, Instructions for use254254SYSTEMSYSTEM 1: Execution not possible while measuringThe selected function cannot be

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use255255TITRATION 8: titration start while not cond.readyA titration has b

12.2 Remedying storage errors726 Titroprocessor, Instructions for use256256

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use25725712.2 Remedying storage errorsIn some circumstances (voltage fluct

12.2 Remedying storage errors726 Titroprocessor, Instructions for use258258Warning:Only switch off the 726 Titroprocessor in the ready condition (* re

1212. . TroubleshootingTroubleshooting726 Titroprocessor, Instructions for use259259PoweronWARN. DETSTORE:corrupt memory detected.continue anyway ?cle

13.113.1 DiagnosisDiagnosis726 Titroprocessor, Instructions for use26026013 Appendix13.1 Diagnosis13.1.1 GeneralThe 726 Titroprocessor is a very pr

13. Appendix726 Titroprocessor, Instructions for use26126113.1.2 Prepare instruments for diagnostic test1.Power off.2.Disconnect all cables at rear,

13.113.1 DiagnosisDiagnosis726 Titroprocessor, Instructions for use26226213.1.3 To check displayWith this diagnostic step the LCD and its control un

13. Appendix726 Titroprocessor, Instructions for use26326313.1.5 To check bar-code readerWith this diagnostic step the bar-code reader can be checked

22. . InstallationInstallation726 Titroprocessor, Instructions for use21212.6 Connections2.6.1 System components and peripheral devices685717 717700

13.113.1 DiagnosisDiagnosis726 Titroprocessor, Instructions for use264264

13. Appendix726 Titroprocessor, Instructions for use26526513.1.7 To check Remote interfaceWith this diagnostic step the interface Remote can be check

13.113.1 DiagnosisDiagnosis726 Titroprocessor, Instructions for use26626613.1.9 To check Analog Interface AWith this diagnostic step the analog inpu

13. Appendix726 Titroprocessor, Instructions for use2672679.Connect Simulator to Titroprocessor accord. to Fig. 4.column C (see Fig. 1)Input 1 : -

13.113.1 DiagnosisDiagnosis726 Titroprocessor, Instructions for use26826813.1.10 To check Analog Interface BWith this diagnostic step the analog inp

13. Appendix726 Titroprocessor, Instructions for use26926913.2 Common variablesCommon variables can be used to store numerical values permanently int

13.2 Common variables726 Titroprocessor, Instructions for use270270by edit the variable was manually entered or al-tered[method] the method name stand

13. Appendix726 Titroprocessor, Instructions for use27127113.3 Access controls and user dialogThe user dialog of the Titroprocessor 726 can be limite

13.3 Access controls and user dialog726 Titroprocessor, Instructions for use272272Configuration of the access controlApart from the keys which can be

13. Appendix726 Titroprocessor, Instructions for use27327313.4 Remote operation / Key simulationThe Titroprocessor 726 can be remotely operated via a

2.6 Connections726 Titroprocessor, Instructions for use2222• 1 parallel printer connection for any external printer (only for models2.726.0010 and 2.

13.4 Remote operation / Key simulation726 Titroprocessor, Instructions for use274274Keyboard codes of the Titroprocessors 726The keyboard codes of cha

13. Appendix726 Titroprocessor, Instructions for use27527513.5 Validation / GLPThe Titroprocessor 726 supports the monitoring of maintenance interval

13.5 Validation / GLP726 Titroprocessor, Instructions for use276276Define sensor listPress the <GLP> key on the main and then the [Sensors] soft

13. Appendix726 Titroprocessor, Instructions for use277277The following limits can be defined:Slope Electrode slopeZero point (mV) Asymmetry potential

13.5 Validation / GLP726 Titroprocessor, Instructions for use278278Sensor test procedure:• After the start of the test the sensor must be immersed in

13. Appendix726 Titroprocessor, Instructions for use279279The method must contain the following results from the calculation formula:• Result for the

13.5 Validation / GLP726 Titroprocessor, Instructions for use280280ÚÄÄÄ Validation Method Definition ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³

13. Appendix726 Titroprocessor, Instructions for use281281sion of the endpoint volume (RE) against sample size(SS).Sample sizeasysStandard limiting va

13.5 Validation / GLP726 Titroprocessor, Instructions for use282282Explanation:It is recommended that all current data (methods and determinations) ar

13. Appendix726 Titroprocessor, Instructions for use28328313.6 Technical specificationsCompact titration and measuring instrument for analyses in the

22. . InstallationInstallation726 Titroprocessor, Instructions for use23232.6.3 External busThe external bus allows external instruments to be contro

13.6 Technical specifications726 Titroprocessor, Instructions for use284284Input tp tp >20 msOutputtptp >200 msVCEO = 40 VIC = 20 mAPrin

13. Appendix726 Titroprocessor, Instructions for use285285Measurement group 1 or 2 (option) measurement groups each with• 2 high-impedance measuremen

13.6 Technical specifications726 Titroprocessor, Instructions for use286286Ambient temperature Nominal operating range 5…40 °CStorage, transport –25…6

13. Appendix726 Titroprocessor, Instructions for use28728713.7 Warranty and certificates13.7.1 WarrantyThe warranty regarding our products is limit

13.7 Warranty and certificates726 Titroprocessor, Instructions for use28828813.7.2 EC Declaration of conformityThe METROHM AG company, Herisau, Switz

13. Appendix726 Titroprocessor, Instructions for use28928913.7.3 Certificate of conformity and system validationThis is to certify the conformity to

13.8 Scope of delivery and accessories726 Titroprocessor, Instructions for use29029013.8 Scope of delivery and accessoriesScope of delivery and acces

13. Appendix726 Titroprocessor, Instructions for use29129113.8.2 OptionsAccessories to separate order at additional charge:Dosing drives685 Dosimat 2

13.8 Scope of delivery and accessories726 Titroprocessor, Instructions for use292292722 Rod stirrer for the sample changerRod stirrer 2.722.0020Stirre

13. Appendix726 Titroprocessor, Instructions for use293293Electrodes for Sample ChangersIt is recommended to use Longlife-Electrodes (LL) or titrodes

Table of contentTable of content726 Titroprocessor, Instructions for use3 Configuration 333.1 Basic settings____________________________________333.2

2.6 Connections726 Titroprocessor, Instructions for use2424700685Dosimat B2Dosimat B1729Dosimat B3Dosimat B4EBusAddress 1EBusAddress 2External BusEBus

14. Index726 Titroprocessor, Instructions for use29429414 Index– ...121; 184; 185! ...72; 21

14. Index726 Titroprocessor, Instructions for use295295<ññ><ALT><DEL> ...257<ññ><HOLD / CONT> ...

14. Index726 Titroprocessor, Instructions for use296296CalData...123calibration...56; 57; 178calibrati

14. Index726 Titroprocessor, Instructions for use297297eject button...19eject the page...66electri

14. Index726 Titroprocessor, Instructions for use298298interface designation ...4interfaces ...36interme

14. Index726 Titroprocessor, Instructions for use299299new start ...257newly calculated ...216NEXT...

14. Index726 Titroprocessor, Instructions for use300300Ssafety information ...20SamplData...123SAMPLE...

14. Index726 Titroprocessor, Instructions for use301301tip ...48titr. rate...136; 144titratin

22. . InstallationInstallation726 Titroprocessor, Instructions for use25252.6.5 Sensors / Electrodes1Ind A2 Ind A1 Ref Pol Pt100/1000Sensors ATitropr

2.6 Connections726 Titroprocessor, Instructions for use26262.6.6 Connecting a balanceRS 232 Interface 1RS 232 Interface 2GThe following balances can

22. . InstallationInstallation726 Titroprocessor, Instructions for use2727The data transmitted from the balance are directly interpreted by the 726 Ti

2.6 Connections726 Titroprocessor, Instructions for use28282.6.7 Connecting an external printerThere are various ways of connecting an external print

22. . InstallationInstallation726 Titroprocessor, Instructions for use2929The following table shows the settings and cables needed to connect print-er

2.6 Connections726 Titroprocessor, Instructions for use3030RemoteE8 lines are available for signal output (Output 0-7). The remote socket of the717 Sa

22. . InstallationInstallation726 Titroprocessor, Instructions for use3131The 8 or 14 output lines of the remote socket can be set at will both in man

2.6 Connections726 Titroprocessor, Instructions for use3232With a suitable multiple cable (with special wiring) even several instrumentscan be control

3. Configuration726 Titroprocessor, Instructions for use33333 ConfigurationIn order to guarantee problem-free work with the 726 Titroprocessor it ise

Table of contentTable of content726 Titroprocessor, Instructions for use6 Sample data and sample silo 916.1 Sample data entry_________________________

3.1 BasicBasic settings726 Titroprocessor, Instructions for use3434Date System date in format YYYY-MM-DDTime System time in format hh:mm:ssSettings fo

3. Configuration726 Titroprocessor, Instructions for use3535Ident1,2,3+Meth sample identification+method nameIdent1+Remark sample ident.+ remarkIdent

3.1 BasicBasic settings726 Titroprocessor, Instructions for use3636In this way it is possible to reconstruct the wholeconfiguration of the Titroproces

3. Configuration726 Titroprocessor, Instructions for use3737It is recommended that all the files in the internalmemory as well as the configuration s

3.2 ConfigurationConfiguration of sample changers726 Titroprocessor, Instructions for use38383.2.1 Sample racksA sample rack is a turntable which acc

3. Configuration726 Titroprocessor, Instructions for use393963 different combinations are possible. Code 000000 stands for 'no codedefined'

3.2 ConfigurationConfiguration of sample changers726 Titroprocessor, Instructions for use4040Rinse The rinsing position is used to fix the position of

3. Configuration726 Titroprocessor, Instructions for use4141[Delete all] deletes all rack definitions.[Check code] carries out a short test to check

3.2 ConfigurationConfiguration of sample changers726 Titroprocessor, Instructions for use42423.2.3 Basic configuration of 717 Sample changerThe softk

3. Configuration726 Titroprocessor, Instructions for use4343Power-up sequenceMOVE Beaker 1 to tower 1 Shift direction

Table of contentTable of content726 Titroprocessor, Instructions for use8 Command Reference 1278.1 Titration modes _________________________________12

3.3 InterfaceInterface configuration726 Titroprocessor, Instructions for use44443.3.1 Setting the RS232 interfacesBaud rate Transmission speedData bi

3. Configuration726 Titroprocessor, Instructions for use4545The settings:CommunicationInt. RS232 interface for the connection to a PCCommun. mode Dat

3.4 BuretBuret units726 Titroprocessor, Instructions for use46463.4 Buret unitsThe definition of a buret unit is used to fix the parameters of differ

3. Configuration726 Titroprocessor, Instructions for use47473.4.1 Tubing definitionsÚÄÄÄConfiguration ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ(Program version 5.72

3.4 BuretBuret units726 Titroprocessor, Instructions for use48483.4.2 700 Dosino, dosing unitsThe tubing dimensions for dosing units:Type Name of the

3. Configuration726 Titroprocessor, Instructions for use4949Dosing and filling speeds for PREP and EMPTYÚÄÄÄ Tubings ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ

3.4 BuretBuret units726 Titroprocessor, Instructions for use50503.4.3 685 Dosimat, exchange unitsFor the 685 Dosimat exchange units the types of bure

3. Configuration726 Titroprocessor, Instructions for use5151largest possible value. Whenever possible 'max' shouldbe selected, except for v

4.1 Overview726 Titroprocessor, Instructions for use52524 Manual operationFor manual operation or for monitoring peripheral devices (dosing devices,se

4. Manual operationManual operation726 Titroprocessor, Instructions for use5353B1, B2 Measuring electrode of measuring group‘Sensors B’Bdiff Differen

Table of contentTable of content726 Titroprocessor, Instructions for use10 Curves and re-evaluation 21810.1 Single curves ____________________________

4.2 Dosing devices726 Titroprocessor, Instructions for use5454Buret unitsIn order that the Prepare (PREP) and Empty (EMPTY only for 700 Dosino)functio

4. Manual operationManual operation726 Titroprocessor, Instructions for use5555well as the outlet port (for Dosinos) through which the reagent will b

4.3 Sensors726 Titroprocessor, Instructions for use56564.3 SensorsDepending on the Titroprocessor model, two measuring groups could bebuilt in. The c

4. Manual operationManual operation726 Titroprocessor, Instructions for use5757ÚÄÄÄ Messung ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³ ³³ Meas. parame

4.3 Sensors726 Titroprocessor, Instructions for use5858The buffers required for the calibration of a pH sensor can be definedindividually or a predefi

4. Manual operationManual operation726 Titroprocessor, Instructions for use5959Measuring parametersSignal drift Limits for signal drift0.5…2…999 mV/m

4.3 Sensors726 Titroprocessor, Instructions for use6060Buffer solutionsAs buffer solutions can have very different compositions it is necessary togive

4. Manual operationManual operation726 Titroprocessor, Instructions for use6161Calibration data are allocated to a measuring input (e.g. A1) and stor

4.4 Sample changer726 Titroprocessor, Instructions for use62624.4 Sample changerOne or two sample changers (if connected) can be operated from thesam

4. Manual operationManual operation726 Titroprocessor, Instructions for use6363Softkeys[Reset changer] initializes the sample changer. When a sample

11. Introduction. Introduction726 Titroprocessor, Instructions for use111 Introduction1.1 Range of applicationsThe Metrohm 726 Titroprocessor is a ve

4.4 Sample changer726 Titroprocessor, Instructions for use64644.4.1 Sample rack and lift functionsFor safety reasons it is not possible to rotate a s

4. Manual operationManual operation726 Titroprocessor, Instructions for use6565[Shift auto] rotates the rack automatically. The shortest rotary path

4.7 Print726 Titroprocessor, Instructions for use6666LINEFEEDPRINTSTOP FORMPRINTSCREENThe <PRINT> key opens the printer menu from which any type

4. Manual operationManual operation726 Titroprocessor, Instructions for use6767Softkeys[Select determ.] opens a selection list of the determinations

4.7 Print726 Titroprocessor, Instructions for use6868Devices & ManualControl Report of the current settings on the 'Manual controlpage'C

4. Manual operationManual operation726 Titroprocessor, Instructions for use6969ÚÄÄÄ Print Determ.report ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³

5.1 General726 Titroprocessor, Instructions for use70705 Methods and determinations5.1 GeneralA method must be loaded in the working memory in order

5. Methods and determinations726 Titroprocessor, Instructions for use71715.2.1 Load methodThe [File] softkey is pressed in order to load an existing

5.2 Method editor726 Titroprocessor, Instructions for use7272In order to define the command sequence enter the required command inthe command column m

5. Methods and determinations726 Titroprocessor, Instructions for use7373command will not be carried out until this time has elapsed and thecommand i

1.2 Application possibilities726 Titroprocessor, Instructions for use22• Up to twelve Dosinos or Dosimats can be addressed for titrating or dos-ing t

5.2 Method editor726 Titroprocessor, Instructions for use7474[* Param] Titration and measuring modes have extended sets ofparameters for setting contr

5. Methods and determinations726 Titroprocessor, Instructions for use7575The definition of the determination report is made in the report window of t

5.2 Method editor726 Titroprocessor, Instructions for use7676print Report printoutyes | noWith 'yes' a report will be printed out on all pri

5. Methods and determinations726 Titroprocessor, Instructions for use7777Note:A method is always edited directly in the working memory.• It is possi

5.2 Method editor726 Titroprocessor, Instructions for use7878Example of a determination report:METROHM Titroprocessor 726 0108 5.726.0012ÄÄÄÄÄÄÄÄÄÄ

5. Methods and determinations726 Titroprocessor, Instructions for use79795.3 DeterminationsA method can be used to carry out a determination on a sa

5.3 Determinations726 Titroprocessor, Instructions for use8080When a sample series is being processed with the autostart functionswitched on the serie

5. Methods and determinations726 Titroprocessor, Instructions for use8181The method is loaded and the application note displayed on the mainpage. Thi

5.3 Determinations726 Titroprocessor, Instructions for use8282Destination memory area for automatic storage ofdeterminations, see above.Determ.name th

5. Methods and determinations726 Titroprocessor, Instructions for use8383• Press the <MAN CONTROL> key in order to be able to operate thedosin

11. Introduction. Introduction726 Titroprocessor, Instructions for use331.3 Instrument description1.3.1 Model versionsThe 726 Titroprocessor is avai

5.3 Determinations726 Titroprocessor, Instructions for use84845.3.3 System variablesA determination produces the following system variables which are

5. Methods and determinations726 Titroprocessor, Instructions for use8585Auto save functionWith the aid of the auto save function (Auto save 'on

5.3 Determinations726 Titroprocessor, Instructions for use86865.3.5 Sample seriesIf a sample series is to be carried out automatically then thecorres

5. Methods and determinations726 Titroprocessor, Instructions for use8787The main page of the Titroprocessor 726 should be similar to that shownbelow

5.3 Determinations726 Titroprocessor, Instructions for use8888• If subsequently – possibly even as the sample series is beingprocessed – further sampl

5. Methods and determinations726 Titroprocessor, Instructions for use89895.3.6 Course of a sample seriesThe following points should be taken into ac

5.3 Determinations726 Titroprocessor, Instructions for use9090Statistics and sample seriesIn certain cases it may be a good idea to set the statistics

6. Sample data and sample silo726 Titroprocessor, Instructions for use91916 Sample data and sample siloA data record can be entered for each sample.

6.2 Sample siloSample silo726 Titroprocessor, Instructions for use9292A precondition for this is the correct definition of the type of balance and the

6. Sample data and sample silo726 Titroprocessor, Instructions for use9393ÚÄÄÄ Sample Silo : NEW.slo ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ