Metrohm 781 pH/Ion Meter Manual do Utilizador

780 pH Meter / 781 pH/Ion MeterManual8.781.8002EN / 2014-07-31

7.1 Calibration and addition/subtraction data 90 780/781 pH/Ion Meter, Manual and from the calibration data report. The calibration date and time

7 Various functions 780/781 pH/Ion Meter, Manual 91 variance If at least 4 standards have been measured then the calibration function will be calc

7.1 Calibration and addition/subtraction data 92 780/781 pH/Ion Meter, Manual Although the electrode Id is retained, it cannot be selected under P

7 Various functions 780/781 pH/Ion Meter, Manual 93 7.1.3 Addition/Subtraction data (781 pH/Ion Meter only) ADD. DATA4 ADD.DATA ├ ion type ├ m

7.1 Calibration and addition/subtraction data 94 780/781 pH/Ion Meter, Manual variance With at least 3 additions the compensation curve for U/log(

7 Various functions 780/781 pH/Ion Meter, Manual 95 V total This is the initial volume of the solution as defined under PARAMETER Conc/calculation

7.2 Reports 96 780/781 pH/Ion Meter, Manual 7.2 Reports A pH/Ion Meter report is produced by transmitting data to a printer or PC via the RS232 i

7 Various functions 780/781 pH/Ion Meter, Manual 97 The following table shows the availability of all reports in the various modes together with t

7.2 Reports 98 780/781 pH/Ion Meter, Manual 7.2.1 Arrangement of a report The first lines of a report provide a general description. This report

7 Various functions 780/781 pH/Ion Meter, Manual 99 7.2.2 Report identification The report identification, known here as Report Id, is an abbrevi

1 Introduction 780/781 pH/Ion Meter, Manual 1 1 Introduction This Manual provides you with a comprehensive overview of the instal-lation, working

7.2 Reports 100 780/781 pH/Ion Meter, Manual If a whole series of measured values is to be documented then this is done by selecting under CONFIG/

7 Various functions 780/781 pH/Ion Meter, Manual 101 7.2.4 Calibration report In the pH and Conc(direct) modes a calibration report can be produc

7.2 Reports 102 780/781 pH/Ion Meter, Manual 7.2.5 Result report (781 pH/Ion Meter only) In the Conc mode for standard or sample addition the res

7 Various functions 780/781 pH/Ion Meter, Manual 103 7.2.6 Configuration report A configuration report (CONFIG) could look like this: 'co

7.2 Reports 104 780/781 pH/Ion Meter, Manual The settings shown for the instrument configuration correspond to the standard settings in the normal

7 Various functions 780/781 pH/Ion Meter, Manual 105 7.2.8 Measured values memory report In the direct types of measurement you can store up to 1

7.2 Reports 106 780/781 pH/Ion Meter, Manual 7.2.9 User method report Method and calibration data occupy memory space in the pH/Ion Me-ter. The u

7 Various functions 780/781 pH/Ion Meter, Manual 107 7.3 Measured values memory In the direct measuring modes pH, T, U, and Conc(direct) the pH/I

7.3 Measured values memory 108 780/781 pH/Ion Meter, Manual 7.3.3 Show measured values With <RECALL> the menu for displaying or deleting st

7 Various functions 780/781 pH/Ion Meter, Manual 109 7.4 Limit monitoring In all the direct measuring modes pH, T, U, Conc(direct) it is possible

1.1 Instrument description 2 780/781 pH/Ion Meter, Manual tomatic pH electrode test. Up to 100 values can be stored in the memory together with th

7.4 Limit monitoring 110 780/781 pH/Ion Meter, Manual 7.4.2 How it functions The exact way in which limit monitoring functions and the effect on

7 Various functions 780/781 pH/Ion Meter, Manual 111 7.5 Setup Certain settings of the pH/Ion Meter can be found in the Setup menu. This menu can

7.5 Setup 112 780/781 pH/Ion Meter, Manual 7.5.2 Input assignment setup : ├ input assign : ├ Mode pH 1 ├ Mode T 2 ├ Mode U

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 113 8 Troubleshooting – Messages – Maintenance 8.1 Troubleshooting If pr

8.1 Troubleshooting 114 780/781 pH/Ion Meter, Manual Problem Possible cause Remedy Measuring signal absent or very variable Electrode not connec

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 115 Problem Possible cause Remedy With standard addition 'auto&apos

8.2 Messages 116 780/781 pH/Ion Meter, Manual Message Situation Cause Remedy XXX bytes missing Method storing XXX bytes are missing for savin

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 117 Message Situation Cause Remedy limit error Direct measure-ment, a

8.2 Messages 118 780/781 pH/Ion Meter, Manual Message Situation Cause Remedy buffers unsuitable Electrode test Electrode test has been starte

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 119 Message Situation Cause Remedy RS error 45 Report output RS tran

1 Introduction 780/781 pH/Ion Meter, Manual 3 1.2 Parts and controls Fig. 2: Front view of the 780 pH Meter or 781 pH/Ion Meter 1 LCD display 3

8.3 QM support 120 780/781 pH/Ion Meter, Manual 8.3 QM support Metrohm AG can support you in your quality management (QM) measures: Literature B

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 121 Service contract Under a separate service contract you can receive par

8.4 Validation 122 780/781 pH/Ion Meter, Manual 8.4 Validation The checking and maintenance of the pH/Ion Meter can be carried out in 3 steps. Th

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 123 8.4.2 Wet tests Quality assurance standards such as GLP (Good Laborat

8.5 Diagnosis 124 780/781 pH/Ion Meter, Manual 8.5 Diagnosis The pH/Ion Meter is equipped with a diagnosis program. This allows selective checks

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 125 RAM Test This test checks the condition of the instrument memory witho

8.6 pH electrode test 126 780/781 pH/Ion Meter, Manual 8.6 pH electrode test With the pH/Ion Meter you can carry out an automatic pH electrode te

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 127 With a 801 Magnetic Stirrer the test is fully automated. You just have

8.6 pH electrode test 128 780/781 pH/Ion Meter, Manual 1 Start pH electrode test • The electrode test is started from the pH measured value dis

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 129 8.6.3 Results The following graph shows the potential of the pH elect

1.2 Parts and controls 4 780/781 pH/Ion Meter, Manual Fig. 3: Rear view of the 780 pH Meter or 781 pH/Ion Meter 5 Connection for potentiometric e

8.6 pH electrode test 130 780/781 pH/Ion Meter, Manual The following table lists the preset tolerances for the three types of elec-trode: excell

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 131 8.6.4 Messages and measures For the test results 'passing electr

8.6 pH electrode test 132 780/781 pH/Ion Meter, Manual Test criterion Message Measure pH 9: absolute drift in stirred solution > 1 mV/min pro

8 Troubleshooting – Messages – Maintenance 780/781 pH/Ion Meter, Manual 133 Storage • Combined glass electrodes with c(KCl) = 3 mol/L as referenc

8.6 pH electrode test 134 780/781 pH/Ion Meter, Manual

9 Annex 780/781 pH/Ion Meter, Manual 135 9 Annex In this section you will find the most important technical data of the pH/Ion Meter, a descripti

9.1 Technical data 136 780/781 pH/Ion Meter, Manual 9.1.3 Measuring input specifications Measuring range Resolution Measuring accuracy 1) pH

9 Annex 780/781 pH/Ion Meter, Manual 137 9.1.6 Safety specifications Instrument 780/781 Standards fulfilled: - EN/IEC 61010-1 - UL 61010-1 - CSA

9.2 Evaluation 138 780/781 pH/Ion Meter, Manual 9.2 Evaluation 9.2.1 pH calibration pH calibration is used to assign the potentials measured at

9 Annex 780/781 pH/Ion Meter, Manual 139 trolyte or an unsuitable reference system. The slope can also differ slightly from UN. As these variation

1 Introduction 780/781 pH/Ion Meter, Manual 5 1.3 Information about this Manual Please study this Manual carefully before you start to use th

9.2 Evaluation 140 780/781 pH/Ion Meter, Manual The calculation of the calibration data depends on the number of pH buffers used: 1-Point calibrat

9 Annex 780/781 pH/Ion Meter, Manual 141 Notes For a pH calibration at least two or more different buffers should be used; these should cover the

9.2 Evaluation 142 780/781 pH/Ion Meter, Manual 9.2.2 Calibration for ion measurements Just as for pH measurement, ion measurement using an ion-s

9 Annex 780/781 pH/Ion Meter, Manual 143 3- and more point calibration With at least 3 calibration solutions the calibration function is deter-min

9.3 Menu structures 144 780/781 pH/Ion Meter, Manual 9.3 Menu structures The menu structures of the instrument configuration and the method param

9 Annex 780/781 pH/Ion Meter, Manual 145 CONFIG : ├ auxiliaries │ ├ run number │ ├ last digit │ ├ dialog │ ├ display │ ├ LCD off aft

9.3 Menu structures 146 780/781 pH/Ion Meter, Manual 9.3.2 Method parameters in the pH mode PARAMETER pH ├ measuring parameters │ ├ electr.i

9 Annex 780/781 pH/Ion Meter, Manual 147 9.3.3 Method parameters in the T mode PARAMETER T ├ measuring parameters │ ├ electr.id │ ├ drift

9.3 Menu structures 148 780/781 pH/Ion Meter, Manual 9.3.5 Method parameter in the Conc mode PARAMETER Conc ├ meas.type │ ├ ion parameters

9 Annex 780/781 pH/Ion Meter, Manual 149 : ├ standard addition / sample addition │ ├ type │ ├ conc.std. │ ├ report │ └ addition ───┬ ma

1.4 Safety information 6 780/781 pH/Ion Meter, Manual 1.4 Safety information Warning! This instrument should only be used in accordance with the

9.4 Stored buffer series 150 780/781 pH/Ion Meter, Manual 9.4 Stored buffer series For automatic buffer recognition during pH calibration the tem

9 Annex 780/781 pH/Ion Meter, Manual 151 DIN (according to DIN standard 19267, 1978) Temp. (°C) DIN1 DIN3 DIN4 DIN7 DIN9 DIN12 pH 1 pH 3

9.4 Stored buffer series 152 780/781 pH/Ion Meter, Manual Mettler Toledo Beckmann Temp. (°C) MT2 MT4 MT7 MT9 MT11 Bec4 Bec7 Bec10 pH 2

9 Annex 780/781 pH/Ion Meter, Manual 153 Baker Temp. (°C) Bak4 Bak7 Bak9 Bak10 pH 4.00 pH 7.00 pH 9.00 pH 10.00 0 4.00 7.13 9.23 10.30

9.4 Stored buffer series 154 780/781 pH/Ion Meter, Manual Merck Titrisol Temp. (°C) Mer1* Mer2 Mer3* Mer4 Mer4.66* Mer5* Mer6* Mer6.88* p

9 Annex 780/781 pH/Ion Meter, Manual 155 Merck CertiPUR (25 °C) Temp. (°C) MerC4.01 MerC7.00 MerC9.00 MerC10.00 pH 4.01 pH 7.00 pH 9.00 pH

9.5 Remote box 156 780/781 pH/Ion Meter, Manual 9.5 Remote box The 6.2148.010 Remote box allows the control of Metrohm instruments which cannot b

9 Annex 780/781 pH/Ion Meter, Manual 157 9.5.2 Functions of the individual remote lines Name Pin Function Input 0 21 Print/Start Outputs a

9.6 Accessories 158 780/781 pH/Ion Meter, Manual 9.6 Accessories Up-to-date information on the scope of delivery and optional accesso-ries for yo

9 Annex 780/781 pH/Ion Meter, Manual 159 The Partslists webpage will be displayed. • Select the desired output language. • Enter the article num

2 Installation 780/781 pH/Ion Meter, Manual 7 2 Installation 2.1 Instrument setup 2.1.1 Packaging The 780/781 pH/Ion Meter and its specially pa

9.7 Warranty (guarantee) 160 780/781 pH/Ion Meter, Manual 9.7 Warranty (guarantee) Metrohm guarantees that the deliveries and services it provide

9 Annex 780/781 pH/Ion Meter, Manual 161 Metrohm also offers a 120-month spare parts availability guarantee and a 60-month PC software support war

9.7 Warranty (guarantee) 162 780/781 pH/Ion Meter, Manual

10 Index 780/781 pH/Ion Meter, Manual 163 10 Index < <>, <> ... 36, 37 <-/exp> ...

10 Index 164 780/781 pH/Ion Meter, Manual Dialog language ... 48 Dilution Calc. parameter Conc ... 75 Dimensions ...

10 Index 780/781 pH/Ion Meter, Manual 165 Measured value display ... 32 Measured values Printout... 44 Measured val

10 Index 166 780/781 pH/Ion Meter, Manual Limit monitoring ... 110 Pin occupancy ... 156 Report Arrangement ... 9

10 Index 780/781 pH/Ion Meter, Manual 167 Time interval Print criterion ... 45 Storage criterion ... 47 Validation ...

2.2 Connecting the accessories 8 780/781 pH/Ion Meter, Manual 2.2 Connecting the accessories Both the stand for attaching the stirrer, clamping r

2 Installation 780/781 pH/Ion Meter, Manual 9 2.3 Connecting optional devices Devices which are to be remotely controlled from the pH/Ion Meter (

2.3 Connecting optional devices 10 780/781 pH/Ion Meter, Manual 2.3.2 Connecting the 802 Rod Stirrer The 802 Rod Stirrer, in combination with the

2 Installation 780/781 pH/Ion Meter, Manual 11 2.3.3 Connecting a Dosimat Plus (only 781) Controlled addition of standard or sample solutions For

2.3 Connecting optional devices 12 780/781 pH/Ion Meter, Manual 2.3.4 Connecting a sample changer For simple automated measurement of several sam

2 Installation 780/781 pH/Ion Meter, Manual 13 2.3.5 Connecting a printer A printer with a serial or parallel interface can be connected to the R

2.3 Connecting optional devices 14 780/781 pH/Ion Meter, Manual Printer Cable 780/781 settings Printer settings Custom DP40-S4N 6.2134.110 Cha

2 Installation 780/781 pH/Ion Meter, Manual 15 2.3.6 Connecting a computer The report output via the RS232 interface can be made to either a prin

2.4 Connecting the electrodes and sensors 16 780/781 pH/Ion Meter, Manual 2.4 Connecting the electrodes and sensors On its rear panel the 780/781

2 Installation 780/781 pH/Ion Meter, Manual 17 2.5 Mains connection The pH/Ion Meter has an external power supply (6.2153.000) providing 12V (DC)

2.7 Initial configuration 18 780/781 pH/Ion Meter, Manual 2.7 Initial configuration The pH/Ion Meter is delivered with standard settings for the

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 19 3 Short operating tutorial In this section the necessary steps for carrying out a simp

Metrohm AGCH-9100 HerisauSwitzerlandPhone +41 71 353 85 85Fax +41 71 353 89 [email protected] pH Meter / 781 pH/Ion MeterProgram Ve

3.1 pH measurement 20 780/781 pH/Ion Meter, Manual 2 Initial configuration • Switch on pH/Ion Meter Section 5.4 • Set dialog language Sectio

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 21 4 Poor calibration data • If the calibration data are outside the calibration parame

3.1 pH measurement 22 780/781 pH/Ion Meter, Manual 3.1.4 pH measurement 1 Select printout criterion • If the obtained measured value is to be p

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 23 3.2 Determination of an ion concentration (only 781: Conc mode) 3.2.1 Requirements Ca

3.2 Determination of an ion concentration (only 781: Conc mode) 24 780/781 pH/Ion Meter, Manual 1 pH/Ion Meter installation • Set up instrument

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 25 2 Start calibration with first standard • Immerse electrodes in the standard with th

3.2 Determination of an ion concentration (only 781: Conc mode) 26 780/781 pH/Ion Meter, Manual 5 Poor calibration data • If the calibration dat

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 27 'fc 781 pH/Ion Meter 01104 5.781.0010 date 2004-05-13 09:20:50 Conc **

3.2 Determination of an ion concentration (only 781: Conc mode) 28 780/781 pH/Ion Meter, Manual 3.2.4 Direct measurement of fluoride 10 mL of the

3 Short operating tutorial 780/781 pH/Ion Meter, Manual 29 3 Print out measured value • With <MEAS/PRINT> you can start the measuring sequ

TeachwareMetrohm AGCH-9100 [email protected] documentation is protected by copyright. All rights reserved.Although all the information

3.2 Determination of an ion concentration (only 781: Conc mode) 30 780/781 pH/Ion Meter, Manual

4 Operation 780/781 pH/Ion Meter, Manual 31 4 Operation 4.1 The keypad • Universal functions • Input of numbers and text • Navigation

4.2 Operating concept 32 780/781 pH/Ion Meter, Manual 4.2 Operating concept The pH/Ion Meter provides two types of display: 1. The measured valu

4 Operation 780/781 pH/Ion Meter, Manual 33 4.3 All key functions at a glance The functions of all the keys are described below both for the mea

4.3 All key functions at a glance 34 780/781 pH/Ion Meter, Manual Key Measured value display (normal operation) Menu display (editing) Section 5.

4 Operation 780/781 pH/Ion Meter, Manual 35 Key Measured value display (normal operation) Menu display (editing) • Direct selection of the short

4.3 All key functions at a glance 36 780/781 pH/Ion Meter, Manual Key Measured value display (normal operation) Menu display (editing) ABC. Ente

4 Operation 780/781 pH/Ion Meter, Manual 37 CONTRAST+ and CONTRAST - Alters display contrast • The contrast of the LCD display can be altered wi

4.4 Operating principles 38 780/781 pH/Ion Meter, Manual 4.4 Operating principles 4.4.1 Configuration and method parameters Instrument configura

4 Operation 780/781 pH/Ion Meter, Manual 39 Values outside the valid range of limits for the particular entry will not be accepted by the instrume

Contents 780/781 pH/Ion Meter, Manual I Table of contents 1 Introduction ... 1 1.1 Instru

4.4 Operating principles 40 780/781 pH/Ion Meter, Manual

5 Configuration 780/781 pH/Ion Meter, Manual 41 5 Configuration With the <CONFIG> key you can access the configuration menu. This contains

5.1 Report 42 780/781 pH/Ion Meter, Manual 5.1 Report REPORT9 CONFIG ├ report │ ├ id1 : ├ id2 ├ report id ├ instrument id

5 Configuration 780/781 pH/Ion Meter, Manual 43 An additional way of assigning report printouts to a particular instru-ment is by using an individ

5.2 Printing out measured values 44 780/781 pH/Ion Meter, Manual 5.2 Printing out measured values MEAS/PRI NT CONFIG : ├ print meas.value :

5 Configuration 780/781 pH/Ion Meter, Manual 45 Normally each measured value is accompanied by the report header for documentation purposes. The e

5.2 Printing out measured values 46 780/781 pH/Ion Meter, Manual print crit.: drift If this print criterion is used then a measured value will

5 Configuration 780/781 pH/Ion Meter, Manual 47 5.3 Storing measured values ST ORE5 CONFIG : ├ store meas. value : └ store crit ┬ immedia

5.4 Auxiliaries 48 780/781 pH/Ion Meter, Manual 5.4 Auxiliaries CONFIG : ├ auxiliaries : ├ run number ├ last digit ├ dialog

5 Configuration 780/781 pH/Ion Meter, Manual 49 LCD off after 1,2...999 min, OFF The display of the pH/Ion Meter has an illuminated background.

Contents II 780/781 pH/Ion Meter, Manual 5 Configuration ... 41 5.1 Report ...

5.4 Auxiliaries 50 780/781 pH/Ion Meter, Manual temp.unit: C, F The pH/Ion Meter can work with temperature information in both °C and °F units.

5 Configuration 780/781 pH/Ion Meter, Manual 51 5.5 Monitoring CONFIG : ├ monitoring : ├ validation ├ service └ system test r

5.6 Peripheral units 52 780/781 pH/Ion Meter, Manual system test report: ON, OFF When it is switched on the 780/781 pH/Ion Meter automatically c

5 Configuration 780/781 pH/Ion Meter, Manual 53 strument is switched on. In such a case remove the connected key-board and switch on the instrumen

5.7 RS232 settings 54 780/781 pH/Ion Meter, Manual barcode: input, id1, id2 For data input you can also use a barcode reader which provides a P

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 55 6 Methods / Parameters The exact measuring method of the pH/Ion Meter is described by meth

6.2 pH measurement (pH mode) 56 780/781 pH/Ion Meter, Manual 6.2 pH measurement (pH mode) 6.2.1 Measuring parameters PARAMETER pH ├ measuring p

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 57 Please note that the drift condition defined here and the temperature parameter described

6.2 pH measurement (pH mode) 58 780/781 pH/Ion Meter, Manual The prestir and poststir pauses represent waiting periods in which stir-ring does not

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 59 report: OFF, short, full After the calibration it is possible to output the calibration d

Contents 780/781 pH/Ion Meter, Manual III 7.2.1 Arrangement of a report ...

6.2 pH measurement (pH mode) 60 780/781 pH/Ion Meter, Manual Metrohm buffers T [°C] pH 4.00 pH 7.00 pH 9.00 0 5 10 15 20 25 30 35

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 61 buffer type: mixed A further way of using the stored buffer table is to combine a maximum

6.2 pH measurement (pH mode) 62 780/781 pH/Ion Meter, Manual 6.2.3 Limits pH PARAMETER pH : ├ limits pH : └ state In the direct measuring

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 63 6.2.5 Plot parameters PARAMETER pH : ├ plot parameters : ├ left mar. pH ├ rig

6.2 pH measurement (pH mode) 64 780/781 pH/Ion Meter, Manual 6.2.7 Electrode test PARAMETER pH : └ electrode test ├ electrode type

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 65 6.3 Temperature measurement (T mode) 6.3.1 Measuring parameters PARAMETER T ├ measuring

6.3 Temperature measurement (T mode) 66 780/781 pH/Ion Meter, Manual This reference value is subtracted from the measured value itself. The modifi

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 67 The exact way in which the limits function works is described in Sec-tion 7.4 independent o

6.4 Potential measurement (U mode) 68 780/781 pH/Ion Meter, Manual 6.4 Potential measurement (U mode) 6.4.1 Measuring parameters PARAMETER U ├

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 69 delta measurement: ON, OFF The delta measurement permits the display of the measured valu

Contents IV 780/781 pH/Ion Meter, Manual 9.2.1 pH calibration ...

6.4 Potential measurement (U mode) 70 780/781 pH/Ion Meter, Manual state: ON, OFF u.limit -2200.0...1000.0...2200.0 mV u.hyst. -2200.0...2.0.

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 71 6.5 Direct ion measurement (781 only: Conc mode) 6.5.1 Type of measurement PARAMETER Conc

6.5 Direct ion measurement (781 only: Conc mode) 72 780/781 pH/Ion Meter, Manual conc.unit: mol/L, %, ppm, g/L, mg/L, µg/L, mEq/L, own The ana

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 73 measured value is to be stored or documented by printing a report (see print criterion and

6.5 Direct ion measurement (781 only: Conc mode) 74 780/781 pH/Ion Meter, Manual rer has been connected and the settings made under CON-FIG/perip

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 75 )old(valueMeasuredsize.smplVfactor)new(valueMeasuredtotal⋅⋅= Please note that the unit of t

6.5 Direct ion measurement (781 only: Conc mode) 76 780/781 pH/Ion Meter, Manual drift: 0.1...0.5...9.9 mV/min Just like the ion measurement, th

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 77 configuration see Section 2.3.3, pH/Ion Meter configuration see Sec-tion 5.6). min.conc 1

6.5 Direct ion measurement (781 only: Conc mode) 78 780/781 pH/Ion Meter, Manual interface (6.2148.010) (see Section 9.5). Out of limits condition

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 79 left mar. -1.0E+30...0.0...1.00E+30 right mar. -1.0E+30...1.00E+30 left marg.T -999...2

Contents 780/781 pH/Ion Meter, Manual V List of illustrations Fig. 1: 781 pH/Ion Meter connected to 801Magnetic Stirrer ...

6.6 Standard and sample addition (781 only: Conc mode) 80 780/781 pH/Ion Meter, Manual 6.6 Standard and sample addition (781 only: Conc mode) In

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 81 type: add, sub In general – and also in this Manual – when dealing with standard and samp

6.6 Standard and sample addition (781 only: Conc mode) 82 780/781 pH/Ion Meter, Manual TIP ! It is possible to alter this parameter during an add

6 Methods / Parameters 780/781 pH/Ion Meter, Manual 83 auto dos increment 1...n 1.0E-30...0.1...999.9 mL The particular volume increment must be

6.6 Standard and sample addition (781 only: Conc mode) 84 780/781 pH/Ion Meter, Manual

7 Various functions 780/781 pH/Ion Meter, Manual 85 7 Various functions This section describes various functions of the pH/Ion Meter which can-no

7.1 Calibration and addition/subtraction data 86 780/781 pH/Ion Meter, Manual method The calibration parameters set under PARAMETER pH/calibration

7 Various functions 780/781 pH/Ion Meter, Manual 87 variance If at least 3 calibration buffers have been used then the calibration func-tion will

7.1 Calibration and addition/subtraction data 88 780/781 pH/Ion Meter, Manual reset cal With this option you can reject all the calibration data o

7 Various functions 780/781 pH/Ion Meter, Manual 89 7.1.2 Conc calibration data (781 pH/Ion Meter only) CAL. DATA7 CAL.DATA ├ ion type ├ elect