Metrohm 914pHr User Manual

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pH Meter/Conductometer

912 Conductometer | 913 pH Meter | 914 pH/Conductometer

Manual

8.912.8001EN / 2014-06-30

Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com

pH Meter/Conductometer

912 Conductometer | 913 pH Meter |

914 pH/Conductometer

8.912.8001EN / 2014-06-30

Manual

fpe

Teachware Metrohm AG CH-9100 Herisau teachware@metrohm.com

Although all the information given in this documentation has been checked with great care, errors cannot be entirely excluded. Should you notice any mistakes please send us your comments using the address given above.

Documentation in additional languages can be found on

http://documents.metrohm.com.

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1 Introduction 1

1.1 Instrument description ......................................................... 1

1.1.1 Model and sales versions ......................................................... 2

1.1.2 Power supply ........................................................................... 2

1.1.3 Interfaces ................................................................................ 3

1.1.4 Sensors .................................................................................... 3

1.2 Intended use ......................................................................... 3

1.3 About the documentation ................................................... 3

1.3.1 Symbols and conventions ........................................................ 3

1.4 Safety instructions ................................................................ 4

1.4.1 General notes on safety ........................................................... 4

1.4.2 Electrical safety ........................................................................ 5

1.4.3 Flammable solvents and chemicals ........................................... 6

1.4.4 Recycling and disposal ............................................................. 6

Table of contents

2 Overview of the instrument 7

2.1 Instrument connectors ......................................................... 8

2.1.1 912 Conductometer ................................................................ 8

2.1.2 913 pH Meter .......................................................................... 8

2.1.3 914 pH/Conductometer IS ....................................................... 9

2.1.4 914 pH/Conductometer ........................................................... 9

2.2 Application environment ................................................... 10

2.2.1 Laboratory use ....................................................................... 10

2.2.2 Mobile application ................................................................. 11

3 Installation 12

3.1 Unpacking and inspecting the instrument ....................... 12

3.1.1 Packaging .............................................................................. 12

3.1.2 Checks .................................................................................. 12

3.1.3 Scope of application .............................................................. 12

3.2 Power supply ...................................................................... 12

3.2.1 Charging the battery .............................................................. 13

3.2.2 Operation with power supply unit ......................................... 14

3.2.3 Operation via USB connector (PC) .......................................... 15

3.3 Connecting sensors ............................................................ 15

pH Meter/Conductometer

3.4 Connecting a printer .......................................................... 16

3.5 Initial configuration ............................................................ 16

3.5.1 Setting the Language ............................................................. 16

3.5.2 Setting the date and time ...................................................... 17

3.6 Installing updates ............................................................... 19

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III

Table of contents

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4 Operation 21

4.1 Switching the instrument on and off ............................... 21

4.2 Displays ............................................................................... 21

4.3 Status displays .................................................................... 24

4.3.1 Battery status ........................................................................ 24

4.3.2 User rights ............................................................................. 24

4.3.3 Sensor quality for pH electrodes ............................................ 25

4.4 Control keys ........................................................................ 25

4.5 Basic operation ................................................................... 26

4.5.1 Main dialog with two measuring channels ............................. 26

4.5.2 Main dialog with one measuring channel ............................... 27

4.5.3 Operation in the main dialog ................................................. 28

4.5.4 Menu dialog .......................................................................... 29

4.5.5 Editing dialog ........................................................................ 30

4.5.6 Selection dialog ..................................................................... 32

4.6 Menu structures .................................................................. 33

4.6.1 912 Conductometer .............................................................. 34

4.6.2 913 pH Meter ........................................................................ 35

4.6.3 914 pH/Conductometer IS ..................................................... 36

4.6.4 914 pH/Conductometer ......................................................... 37

4.7 Menu dialogs ...................................................................... 38

4.7.1 Parameters pH/U/T and Parameters pH/U/T IS ........................ 38

4.7.2 Parameters Κ/TDS/Sal/ρ/T ...................................................... 39

4.7.3 Measured values .................................................................... 40

4.7.4 Sensors .................................................................................. 42

4.7.5 Report ................................................................................... 47

4.7.6 Configuration ........................................................................ 48

4.7.7 User ...................................................................................... 49

4.8 pH measurement ................................................................ 50

4.8.1 pH electrode calibration ......................................................... 50

4.8.2 Measurement ........................................................................ 52

4.9 Conductivity measurement ................................................ 53

4.9.1 Determination of the cell constant (calibration) ...................... 53

4.9.2 Measurement ........................................................................ 54

4.10 Outputting reports/measured values ................................ 56

4.10.1 Printing out ........................................................................... 56

4.10.2 PC/LIMS and CSV data transfer .............................................. 56

5 Operation and maintenance 59

5.1 General notes ...................................................................... 59

5.1.1 Care ...................................................................................... 59

5.1.2 Maintenance by Metrohm Service .......................................... 59

5.1.3 Sensor care ............................................................................ 59

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5.2 Quality management and qualification with Metrohm .. 60

pH Meter/Conductometer

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6 Troubleshooting 61

7 Appendix 66

Table of contents

6.1 General ................................................................................ 61

6.2 Problems ............................................................................. 62

6.2.1 Troubleshooting .................................................................... 62

6.3 Restarting/resetting the instrument ................................. 64

6.3.1 Instrument reset .................................................................... 64

6.3.2 Resetting the instrument to factory settings ........................... 64

6.4 Messages ............................................................................. 65

7.1 Saved buffer series ............................................................. 66

7.1.1 Metrohm ............................................................................... 67

7.1.2 NIST (according to DIN standard 19266, 2000) ...................... 68

7.1.3 DIN (according to DIN standard 19267, 2012) ....................... 69

7.1.4 Fisher .................................................................................... 70

7.1.5 Mettler Toledo ....................................................................... 71

7.1.6 Merck CertiPUR 20 / Titrisol ................................................... 72

7.1.7 Merck CertiPUR 25 ................................................................ 73

7.1.8 Beckmann ............................................................................. 74

7.1.9 Radiometer ............................................................................ 75

7.1.10 Baker ..................................................................................... 76

7.1.11 Hamilton DURACAL ............................................................... 77

7.1.12 Fluka ..................................................................................... 78

8 Technical specifications 79

8.1 Measuring inputs ................................................................ 79

8.2 Measured value memory ................................................... 80

8.3 TFT display .......................................................................... 80

8.4 Interfaces ............................................................................. 80

8.5 Power supply ...................................................................... 80

8.6 Charging time ..................................................................... 81

8.7 Runtime with battery ......................................................... 81

8.8 Housing specification ......................................................... 82

8.9 Safety specification ............................................................ 82

8.10 Electromagnetic compatibility (EMC) ................................ 82

8.11 Ambient temperature ......................................................... 83

8.12 Reference conditions .......................................................... 83

8.13 Dimensions/material ........................................................... 83

9 Warranty (guarantee) 84

pH Meter/Conductometer

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Table of contents

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10 Accessories 86

Glossary 88

Index 89

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pH Meter/Conductometer

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Table of figures

Figure 1 pH Meter/Conductometer - front ...................................................... 7

Figure 2 912 Conductometer - connectors ...................................................... 8

Figure 3 913 pH Meter - connectors ............................................................... 8

Figure 4 914 pH/Conductometer (digital) - connectors .................................... 9

Figure 5 914 pH/Conductometer (analog) - connectors ................................... 9

Figure 6 pH Meter/Conductometer in a laboratory setup ............................... 10

Figure 7 pH Meter/Conductometer for mobile application ............................. 11

Figure 8 USB Y cable ..................................................................................... 16

Figure 9 View - main dialog .......................................................................... 22

Figure 10 View - menu dialog ......................................................................... 22

Figure 11 View - editing dialog ....................................................................... 23

Figure 12 View - selection dialog .................................................................... 23

Figure 13 Operation - main dialog, two-channel ............................................. 27

Figure 14 Operation - main dialog, one-channel ............................................. 28

Figure 15 Operation - menu dialog ................................................................. 30

Figure 16 Operation - editing dialog ............................................................... 31

Figure 17 Operation - selection dialog ............................................................. 32

Figure 18 Example of a message ..................................................................... 65

Table of figures

pH Meter/Conductometer

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VII

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1 Introduction

This manual gives you a comprehensive overview of the installation, function and operation of pH Meter/Conductometer instruments.

NOTE

You can request application descriptions in the form of Application Notes and Application Bulletins from your Metrohm representative or download them from

http://www.metrohm.com.

1.1 Instrument description

pH Meter/Conductometer instruments are designed for use both outdoors and indoors as well as for stationary use in the laboratory.

1 Introduction

The instruments come in four basic versions, which differ in their design with regard to different measuring channels and respective functions.

912 Conductometer

913 pH Meter With an analog and a digital measuring channel each for measuring the

914 pH/Conductometer IS

914 pH/Conductometer

With a measuring channel for measuring the conductivity, the TDS and the salinity.

pH value, the potential and the temperature.

With a digital measuring channel for measuring the pH value, the potential and the temperature and a measuring channel for measuring the conductivity, the TDS, the salinity and the temperature.

With an analog measuring channel for measuring the pH value, the potential and the temperature and a measuring channel for measuring the conductivity, the TDS, the salinity and the temperature.

pH Meter/Conductometer

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1.1 Instrument description

1.1.1 Model and sales versions

pH Meter/Conductometer instruments are available in the following versions:

Table 1 Model versions

2.912.0010 912 Conductometer Instrument with standard

2.912.0110 912 Conductometer Mobile version with acces-

2.912.0210 912 Conductometer Laboratory version with

2.913.0010 913 pH Meter (digital/analog) Instrument with standard

2.913.0110 913 pH Meter (digital/analog) Mobile version with acces-

2.913.0210 913 pH Meter (digital/analog) Laboratory version with

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accessories

sories case

instrument base console

accessories

sories case

instrument base console

2.914.0010 914 pH/Conductometer (pH digital) Instrument with standard

2.914.0020 914 pH/Conductometer (pH analog) Instrument with standard

2.914.0110 914 pH/Conductometer (pH digital) Mobile version with acces-

2.914.0120 914 pH/Conductometer (pH analog) Mobile version with acces-

2.914.0210 914 pH/Conductometer (pH digital) Laboratory version with

2.914.0220 914 pH/Conductometer (pH analog) Laboratory version with

The accessories for a given instrument version can be created as a PDF list on the Internet at http://partslists.metrohm.com.

1.1.2 Power supply

The instrument is powered either by a built-in battery or, in stationary use, via a power supply unit.

accessories

sories case

instrument base console

NOTE

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pH Meter/Conductometer

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1.1.3 Interfaces

You can connect a printer or establish a connection with a PC for data transfer (PC/LIMS report and CSV format) using the USB interface.

1.1.4 Sensors

Metrohm offers various sensors for specific measurements.

For more information on the theoretical background, please refer to the Metrohm monograph Electrodes in Potentiometry.

1.2 Intended use

This instrument is suitable for measuring in chemicals and flammable samples. Usage of the pH Meter/Conductometer therefore requires the user to have basic knowledge and experience in handling toxic and caustic substances. Knowledge with respect to the application of the fire prevention measures prescribed for laboratories is also mandatory.

1 Introduction

NOTE

1.3 About the documentation

CAUTION

Please read through this documentation carefully before putting the instrument into operation. The documentation contains information and warnings which the user must follow in order to ensure safe operation of the instrument.

1.3.1 Symbols and conventions

The following symbols and formatting may appear in this documentation:

Cross-reference to figure legend

The first number refers to the figure number, the second to the instrument part in the figure.

Instruction step

Carry out these steps in the sequence shown.

Method Dialog text, parameter in the software

pH Meter/Conductometer

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1.4 Safety instructions

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File ▶ New Menu or menu item

[Next] Button or key

WARNING

This symbol draws attention to a possible life-threatening hazard or risk of injury.

WARNING

This symbol draws attention to a possible hazard due to electrical current.

WARNING

This symbol draws attention to a possible hazard due to heat or hot instrument parts.

WARNING

This symbol draws attention to a possible biological hazard.

1.4 Safety instructions

1.4.1 General notes on safety

WARNING

This instrument may only be operated in accordance with the specifications in this documentation.

This instrument has left the factory in a flawless state in terms of technical safety. To maintain this state and ensure non-hazardous operation of the instrument, the following instructions must be observed carefully.

CAUTION

This symbol draws attention to possible damage to instruments or instrument parts.

NOTE

This symbol highlights additional information and tips.

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pH Meter/Conductometer

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1.4.2 Electrical safety

The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010.

Only personnel qualified by Metrohm are authorized to carry out service work on electronic components.

Never open the housing of the instrument. The instrument could be damaged by this. There is also a risk of serious injury if live components are touched.

There are no parts inside the housing which can be serviced or replaced by the user.

1 Introduction

WARNING

Supply voltage

WARNING

An incorrect mains voltage can damage the instrument.

Only operate this instrument with a mains voltage specified for it (see rear panel of the instrument).

Battery / power supply unit

WARNING

Use the power supply unit only for its intended purpose. Inappropriate use or use of non-approved or incompatible power supply units may cause fires or explosions and result in the revocation of the license or warranty.

If you think that the battery or the power supply unit has been damaged, have it checked by a service center. Do not use damaged batteries or power supply units.

pH Meter/Conductometer

Do not charge your instrument during thunderstorms.

Do not use the power supply unit outdoors.

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1.4 Safety instructions

1.4.3 Flammable solvents and chemicals

WARNING

All relevant safety measures are to be observed when working with flammable solvents and chemicals.

￭ Set up the instrument in a well-ventilated location (e.g. fume cup-

board).

￭ Keep all sources of flame far from the workplace. ￭ Clean up spilled liquids and solids immediately. ￭ Follow the safety instructions of the chemical manufacturer.

1.4.4 Recycling and disposal

This product is covered by European Directive 2002/96/EC, WEEE – Waste from Electrical and Electronic Equipment.

The correct disposal of your old equipment will help to prevent negative effects on the environment and public health.

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More details about the disposal of your old equipment can be obtained from your local authorities, from waste disposal companies or from your local dealer.

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pH Meter/Conductometer

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2 Overview of the instrument

Figure 1 pH Meter/Conductometer - front

Connectors / interfaces

With a cover cap for the USB interface and the digital interface.

Display

For measured values and menus (see Chapter 4.2, page 21).

Eyelet for carrying strap

As accessory for mobile applications.

pH Meter/Conductometer

Sensor holder slot

For mobile applications, a sensor holder may be inserted here.

Keypad

With a total of eight keys to operate the instrument (see Chapter 4.4, page 25).

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2.1 Instrument connectors

2.1.1 912 Conductometer

Figure 2 912 Conductometer - connectors

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Conductivity measuring cell

Connection socket for conductivity measuring cells.

2.1.2 913 pH Meter

Figure 3

pH/mV electrode

Connection socket for analog pH/mV electrodes.

Type B mini USB connector

Connection socket for power supply, data transmission and printing.

913 pH Meter - connectors

Temperature sensor / reference

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pH/mV electrode

Connection socket for 854 iConnect for connecting iTrodes.

Type B mini USB connector

Connection socket for power supply, data transmission and printing.

pH Meter/Conductometer

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2.1.3 914 pH/Conductometer IS

Figure 4 914 pH/Conductometer (digital) - connectors

2 Overview of the instrument

Conductivity measuring cell

Connection socket for conductivity measuring cells.

Type B mini USB connector

Connection socket for power supply, data transmission and printing.

2.1.4 914 pH/Conductometer

pH/mV electrode

Connection socket for 854 iConnect for connecting iTrodes.

Figure 5

pH/mV electrode

Connection socket for analog pH/mV electrodes.

Conductivity measuring cell

Connection socket for conductivity measuring cells.

pH Meter/Conductometer

914 pH/Conductometer (analog) - connectors

Temperature sensor / reference

Type B mini USB connector

Connection socket for power supply, data transmission and printing.

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2.2 Application environment

pH Meter/Conductometer instruments have been designed for use in laboratories and for mobile use indoors or outdoors.

The sturdy design meets the requirements in accordance with IP 67 protection marking. The instruments are therefore protected against shorttime immersion in water, provided that the respective plugs are plugged in at the sensor connectors.

2.2.1 Laboratory use

In the laboratory, pH Meter/Conductometer instruments can be placed in an instrument base console.

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Figure 6

Electrode holder

Instrument base console

Consisting of receptacle base and support rod.

pH Meter/Conductometer in a laboratory setup

Clamping ring

pH Meter/Conductometer

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2.2.2 Mobile application

For mobile application, pH Meter/Conductometer instruments can be equipped with a carrying strap and one or two slide-in holders for electrodes.

2 Overview of the instrument

Figure 7 pH Meter/Conductometer for mobile application

Electrode holder

The holders can be inserted from both sides (left/right) of the instrument.

pH Meter/Conductometer

Eyelet for carrying strap

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3.1 Unpacking and inspecting the instrument

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3 Installation

3.1 Unpacking and inspecting the instrument

3.1.1 Packaging

The instrument is supplied in highly protective special packaging together with the separately packed accessories. Keep this packaging, as only this ensures safe transportation of the instrument.

3.1.2 Checks

Immediately after receipt, check whether the shipment has arrived complete and without damage by comparing it with the delivery note.

3.1.3 Scope of application

pH Meter/Conductometer instruments have been designed for mobile application outdoors and/or in the laboratory.

Influence of weather conditions

Damage to instruments as a result of sun irradiation or temperatures below the freezing point.

When you do not use the instrument, do not expose it to direct sunlight and to temperatures below 0 °C.

3.2 Power supply

The pH Meter/Conductometer is equipped with a built-in battery and can thus be used for mobile applications. For stationary use in the laboratory, the instrument can be operated with a power supply unit.

Battery state of charge

You receive the battery in a partially charged state. However, you may have to recharge it again before you can use the instrument for the first time.

CAUTION

NOTE

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pH Meter/Conductometer

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3 Installation

CAUTION

Unauthorized manipulations

The instrument may be damaged as a result of unauthorized manipulations.

￭ Use for charging only the supplied power supply unit (6.2166.100)

or the optional car charger adapter (6.2166.500), which have been approved as accessories for use with this instrument.

￭ Your instrument's battery cannot be removed. ￭ Do not attempt to remove the battery from the instrument. To

replace the battery, take the instrument to your nearest authorized Metrohm Service.

￭ Unauthorized replacement of the battery may result in a loss of the

warranty.

NOTE

Function of the control keys

For the installation steps below you need to use the control keys.

These are described in the following Operation chapter (see Chapter

4.4, page 25).

3.2.1 Charging the battery

NOTE

Charging the battery

The battery is charged only when the instrument is switched on.

Please observe the following procedure:

1. First, connect the USB cable to the supplied power supply unit, then the power supply unit to the socket, and then finally the mini USB connector of the cable to your instrument.

2. Now switch on the instrument using the key.

3. When the battery is fully charged, disconnect the power supply unit first from the instrument and then from the socket.

pH Meter/Conductometer

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3.2 Power supply

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If no power socket is available, you can also charge your instrument via the USB interface of a computer (PC) or a car charger adapter.

NOTE

Charging capacity

The charging process requires a minimum capacity of 500 mAh.

￭ Use a USB hub with external power supply or a suitable USB connec-

tor on the computer (PC).

￭ For mobile charging of the battery, use a car charger adapter from

the Metrohm accessories (6.2166.500).

1. Connect the USB cable first to the computer and then to your instrument.

2. Then switch on the instrument.

3. As soon as the battery is fully charged, disconnect the USB cable first from the instrument and then from the computer.

NOTE

Battery condition

The battery performance may deteriorate over time. If the operating times are much shorter than usual, take the instrument to the closest Metrohm Service to have the battery replaced.

3.2.2 Operation with power supply unit

You can operate the pH Meter/Conductometer with the supplied power supply unit without restrictions.

CAUTION

Measuring with power supply unit connected

Inappropriate power supply units may influence and interfere with the measuring signal.

Use only the supplied power supply unit (6.2166.100) for measuring.

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pH Meter/Conductometer

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NOTE

Charging the battery with power supply

The battery will not be overcharged if the instrument is used for extended periods with the power supply unit connected. The instrument is equipped with a charging controller to protect the battery.

3.2.3 Operation via USB connector (PC)

Operation of the instrument with power supply via a USB connector requires a minimum capacity of 500 mAh (see Chapter 3.2.1, page 13).

3.3 Connecting sensors

Sensors can be connected while the instrument is running.

NOTE

3 Installation

Parameter setting

Please note that if you change the sensor the sensor has to be selected in the menu dialog Menu ▶ Parameters X ▶ Measuring parame- ters ▶ Sensor name or a new sensor has to be entered in the sensor list.

NOTE

iConnect for iTrodes

Sensors from the iTrodes line are only supported by the 854 iConnect series 07 or higher.

The series is indicated by the number 17 in the following serial number example:

1854001017216

pH Meter/Conductometer

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3.4 Connecting a printer

Printers for report output are connected with the USB Y cable (6.2151.140).

NOTE

Printer function

The connected printer works only when the pH Meter/Conductometer is supplied by the power supply unit.

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Figure 8

USB type A

Power supply unit connector for power supply.

USB type B

Printer connector.

USB Y cable

3.5 Initial configuration

3.5.1 Setting the Language

NOTE

"Language" factory setting

On instruments delivered ex works, English is set in the language settings.

The following languages are available on the instrument:

USB type B mini

Instrument connector pH Meter/Conductometer.

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￭ German ￭ English

pH Meter/Conductometer

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3 Installation

￭ Spanish ￭ French ￭ Portuguese ￭ Chinese

Setting the Language

You can access the menu structures via the Menu item (see Figure 13, page 27) in the main screen.

Select the entry point with the or arrow keys.

Use the key to change to the menu structures.

Select the Configuration menu structure with the arrow

key and change to the menu structure with the key.

Select the Language menu dialog with the arrow key and

change to the selection dialog with the key.

Select the required language with the or arrow

keys and confirm with the key.

3.5.2 Setting the date and time

NOTE

"Date/time" factory setting

The date and time values of the manufacturer are set on the instruments ex works.

In case of deep discharge of the battery, the system time will be reset to the default value.

pH Meter/Conductometer

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3.5 Initial configuration

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Setting the date/time

You can access the menu structures via the Menu item (see Figure 13, page 27) in the main screen.

Select the entry point with the or arrow keys.

Use the key to change to the menu structures.

Select the Configuration menu structure with the arrow

key and change to the menu structure with the key.

Select the Date or the Time menu dialog with the arrow

key and change to the editing dialog with the key.

￭ Date format: YYYY-MM-DD ￭ Time format: hh:mm:ss

Select the required character with the , , , and

arrow keys and confirm each with the key.

Confirm the final value with the editing element and the key.

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pH Meter/Conductometer

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3.6 Installing updates

Stay up to date – download the latest versions of the software and programs to your pH Meter/Conductometer to benefit from new and expanded functions. The performance of your instrument may also be improved by software updates.

Downloading the update from the Internet

First, you have to download the data for the instrument update from the Internet and save it on the computer (PC).

Go to http://www.metrohm.com/com/Support/Software.html.

Select the instrument in the list box.

Select the appropriate software version and save it somewhere on

your computer.

Extract the zip file. The two files in the SwUpdates subfolder with

the suffixes *.bin and *.mbin will be used for the installation.

3 Installation

NOTE

Data backup

You are recommended to create a backup of the saved data before the update.

Use the Print out or Data transfer functions (see Chapter 4.10, page

56).

Installing the update on the instrument

For the actual installation of the update, the instrument has to be connected to the computer (PC) by means of a USB cable (6.2151.110).

The optional USB Y cable (6.2151.140) cannot be used.

Connect the USB cable to the computer and then to the instrument.

Switch on the instrument.

pH Meter/Conductometer

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3.6 Installing updates

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NOTE

Switching on the instrument

The USB connection works only when the instrument is on.

The instrument is recognized by the computer (PC) as a removable drive.

Copy the two files with the suffixes *.bin and *.mbin directly into

the root directory of the instrument (removable drive) using a file manager (e.g. Windows Explorer).

Switch off the instrument after the copy process has been completed

and disconnect it from the USB cable.

Switch on the instrument again and wait for the installation process.

During start-up, the instrument recognizes the new update files and installs these automatically.

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pH Meter/Conductometer

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4 Operation

4.1 Switching the instrument on and off

Switching on the instrument

Proceed as follows to do this:

Press the key.

The instrument is initialized and a system test is performed. This process takes some time.

A starting image is displayed during start-up.

Then the main dialog is displayed. Now the instrument is ready.

4 Operation

4.2 Displays

Switching off the instrument

Press the key.

The message 912-129 Shut down appears and the instrument saves the data and turns off.

The pH Meter/Conductometer has a total of four display types containing specific displays and/or operating functions.

￭ Main dialog ￭ Menu dialog ￭ Editing dialog ￭ Selection dialog

NOTE

Active dialog field

pH Meter/Conductometer

The actively selected dialog field is always displayed with the Metrohm green contrast color.

In this case, the entry point for the Menu menu structures is selected.

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4.2 Displays

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Main dialog The main dialog (example: both measuring channels displayed) is the nor-

mal status after the instrument has been switched on.

Figure 9 View - main dialog

Menu dialog The menu dialog is used for navigating through the functional structures.

Menu lines with an arrow contain another, deeper structure with further dialogs.

Figure 10 View - menu dialog

Editing dialog Editing dialogs are used in general for data entry and editing.

Depending on the data type, a different set of possible characters is available.

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pH Meter/Conductometer

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4 Operation

NOTE

Capital letters and special characters

You can insert capital letters and special characters by holding the key.

Figure 11 View - editing dialog

Selection dialog Selection dialogs offer preset values for selection in corresponding data

fields.

Figure 12 View - selection dialog

pH Meter/Conductometer

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4.3 Status displays

The main dialog displays contain corresponding graphical elements to show instrument and sensor statuses.

4.3.1 Battery status

The battery status is displayed in five stages with colored graphical elements.

The battery is full and charging is complete.

The battery is nearly full but still charging.

The battery is charged to 75%.

The battery is charged to 50%.

The battery is charged to 25%.

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4.3.2 User rights

The battery is empty.

NOTE

Flash icon

The flash icon indicates that the instrument is connected to a power source for charging.

The user rights can be set in the Menu under User as Dialog type:

1. Expert Use of the instrument is unrestricted. All functions are available.

2. Routine The menu structures Configuration and Sensors are locked.

If the key icon menu is limited to the functions for Routine users.

(on top in the main dialog) is displayed, then the user

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pH Meter/Conductometer

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4.3.3 Sensor quality for pH electrodes

The sensor quality is indicated with three colored graphical elements.

The criteria for the display status are set in the calibration parameters (see Chapter 4.7.4, page 42).

The electrode is in a good range with regard to the limit values set.

The electrode is close to the limit value range.

The limit value range is defined as follows:

￭ Slope limit value with an approximation of 1% to the set limit value. ￭ Limit value pH(0) with an approximation of 0.1 pH to the set limit

value.

The electrode is outside the limit values.

4 Operation

4.4 Control keys

Keypad

Switching the instrument on or off.

￭ To switch on, briefly push the key. The instrument turns on. ￭ To switch off, briefly push the key. A message appears and the instru-

ment turns off.

The CAL key starts the procedure to calibrate a sensor.

pH Meter/Conductometer

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4.5 Basic operation

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NOTE

Calibration

A sensor can only be calibrated in the corresponding one-channel main dialog.

The BACK key causes the entry to be accepted and/or the dialog to be exited.

The OK key confirms a selection or starts a process.

The LEFT/RIGHT arrow keys are used for navigation in the text and number editor for selecting characters or for toggling between the measuring channel displays in the main dialog.

The UP/DOWN arrow keys are used for navigating the selection bar one line up or down or for selecting characters in the text editor.

4.5 Basic operation

The following chapters describe the various displays and how to operate them.

4.5.1 Main dialog with two measuring channels

The view with two measuring channels is displayed after the instrument start-up.

NOTE

This does not apply for the 912 Conductometer, as this instrument has only one measuring channel.

NOTE

Temperature display

The temperature displays on the two measuring channels can only be compared in the same medium.

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As a result of temperature sensor and instrument tolerances, the displayed values might deviate from each other.

pH Meter/Conductometer

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4 Operation

Figure 13 Operation - main dialog, two-channel

Battery state of charge

(see Chapter 4.3.1, page 24).

Sensor condition

(see Chapter 4.3.3, page 25).

Calibration interval display

Time in days until the next calibration is due.

Print/save measured value

Button for the functions print, save or print+save.

Both measured values are printed and/or saved.

The procedure for functions of the main dialog with two measuring channels is the same as for the main dialog with one measuring channel:

￭ (see "Accessing the menu structures", page 28). ￭ (see "Toggling from one-channel to two-channel view", page 29).

NOTE

Menu access

(see "Accessing the menu structures", page

28).

Display measuring channel 1

Display measuring channel 2

Date/time display

4.5.2 Main dialog with one measuring channel

The corresponding measuring channel is displayed according to the selection.

In addition, the display and input fields ID1, ID2 and User are displayed in the main dialog with one measuring channel.

pH Meter/Conductometer

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4.5 Basic operation

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Figure 14 Operation - main dialog, one-channel

Battery state of charge

(see Chapter 4.3.1, page 24).

Sensor condition

(see Chapter 4.3.3, page 25).

Calibration interval display

Time in days until the next calibration is due.

ID1

Input option for sample designation/identification (e.g. name, number, etc.).

User

Input option for the user name or display of the preset value from the User menu dialog (see Chapter 4.7.7, page 49).

4.5.3 Operation in the main dialog

Menu access

(see "Accessing the menu structures", page

28).

Measuring channel display

Print/save measured value

Button for the functions print, save or print+save.

The measured value with the currently selected measuring channel is printed and/or saved.

ID2

Input option for sample designation/identification (e.g. batch number, lot number, etc.).

Date/time display

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Accessing the menu structures

You can access the menu structures via the Menu item (14-2) in the main dialog.

Select the entry point with the or arrow keys.

pH Meter/Conductometer

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4 Operation

Use the key to change to the menu structures.

Toggling from one-channel to two-channel view

The view can be changed in instruments with two measuring channels. Three views can be displayed as follows:

￭ Display with both measuring channels. ￭ Display with measuring channel 1 and the data ID1, ID2 and User. ￭ Display with measuring channel 2 and the data ID1, ID2 and User.

You can toggle between the views as needed with the or arrow keys.

Printing and/or saving measured values

Measured value recording is started with the Print/save measured value button.

￭

￭ - Printing and saving the measured values.

￭ - Saving the measured values.

The respective triggering is determined by the settings in the menu:

￭ Menu ▶ Measured values ▶ Values

￭ Menu ▶ Measured values ▶ Data

4.5.4 Menu dialog

The further menu structures, editing dialogs and selection dialogs can be selected in the menu dialog.

- Printing the measured values.

and

(see Chapter 4.7.3, page 40).

pH Meter/Conductometer

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4.5 Basic operation

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Figure 15 Operation - menu dialog

Menu title

The menu title indicates which menu structure is currently open.

Arrow icon

The arrow icon indicates that there are further substructures.

Navigation in the menu structures

You can access the menu structures via the Menu item (14-2) in the main dialog.

Select the desired menu line with the or arrow keys.

Change into the next substructure with the key.

Change back to the higher structure with the key.

Menu line selected

The selected menu line is always displayed in the color Metrohm green and in inversed text.

4.5.5 Editing dialog

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The entries can be created and edited again in the editing dialog.

pH Meter/Conductometer

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4 Operation

Figure 16 Operation - editing dialog

Menu title

Data field

Function elements

Menu line

Selectable characters

The data entry is accepted with the Entry editing element.

The editing dialog is closed without changing the existing data value with the Cancel editing element.

The entire contents of the data field are deleted and a new data value can be entered with the Delete all editing element.

The character to the left of the cursor is deleted in the data field with the Backspace editing element.

The cursor moves one space to the left in the data field with the One space to the left editing element.

The cursor moves one space to the right in the data field with the One space to the right editing element.

pH Meter/Conductometer

NOTE

Capital letters / special characters

Capital letters and special characters can be entered by holding the

key on the respective standard character.

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4.5 Basic operation

4.5.6 Selection dialog

In selection dialogs, you can select and apply fixed data values.

Figure 17 Operation - selection dialog

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Menu title

Selectable data values

Menu line

Changing data values

The data values of the corresponding menu function can be selected, if required.

On the corresponding menu function, open the selection window

with the key.

Select the required data value with the or arrow keys.

Apply the data value and exit the selection window with the key.

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pH Meter/Conductometer

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4.6 Menu structures

pH Meter/Conductometer instruments contain different menu structures depending on the instrument version. These structures are represented in an overview in the following tables:

￭ 912 Conductometer

(see Chapter 4.6.1, page 34)

￭ 913 pH Meter

(see Chapter 4.6.2, page 35)

￭ 914 pH/Conductometer IS

(see Chapter 4.6.3, page 36)

￭ 914 pH/Conductometer

(see Chapter 4.6.4, page 37)

Menu dialogs

4 Operation

NOTE

The menu dialogs and the corresponding menu lines are described in more detail in the next chapter (see Chapter 4.7, page 38).

pH Meter/Conductometer

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4.6 Menu structures

4.6.1 912 Conductometer

Table 2 912 Conductometer – menu structures

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Menu Parameters Κ/TDS/Sal/ρ/T

(see Chapter 4.7.2, page 39)

Measured values

(see Chapter 4.7.3, page 40)

Sensors

(see Chapter 4.7.4, page 42)

Report

(see Chapter 4.7.5, page 47)

Configuration

(see Chapter 4.7.6, page 48)

￭ Measuring parameters ￭ Calibration param.

￭ Values ￭ Data ￭ Criterion ￭ Output date/time ￭ Output headers ￭ Calibration data

￭ Sensor list ￭ New sensor ￭ Delete sensor

￭ Report ￭ Line feed ￭ Printer

￭ Last decimal place ￭ Date ￭ Time ￭ Power off after ￭ Turn off LCD after ￭ Brightness ￭ Program version ￭ Language

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User

(see Chapter 4.7.7, page 49)

Service/Diagnosis

￭ User ￭ Dialog type

pH Meter/Conductometer

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4.6.2 913 pH Meter

Table 3 913 pH Meter – menu structures

4 Operation

Menu Parameters pH/U/T

Parameters pH/U/T IS

(see Chapter 4.7.1, page 38)

Measured values

(see Chapter 4.7.3, page 40)

Sensors

(see Chapter 4.7.4, page 42)

Report

(see Chapter 4.7.5, page 47)

Configuration

(see Chapter 4.7.6, page 48)

￭ Measuring parameters ￭ Calibration param.

￭ Values ￭ Data ￭ Criterion ￭ Output date/time ￭ Output headers ￭ Calibration data

￭ Sensor list ￭ New sensor ￭ Delete sensor

￭ Report ￭ Line feed ￭ Printer

￭ Last decimal place ￭ Date ￭ Time ￭ Power off after ￭ Turn off LCD after ￭ Brightness ￭ Program version ￭ Language

pH Meter/Conductometer

User

(see Chapter 4.7.7, page 49)

Service/Diagnosis

￭ User ￭ Dialog type

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4.6 Menu structures

4.6.3 914 pH/Conductometer IS

Table 4 914 pH/Conductometer IS – menu structures

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Menu Parameters pH/U/T IS

(see Chapter 4.7.1, page 38)

Parameters Κ/TDS/Sal/ρ/T

(see Chapter 4.7.2, page 39)

Measured values

(see Chapter 4.7.3, page 40)

Sensors

(see Chapter 4.7.4, page 42)

Report

(see Chapter 4.7.5, page 47)

Configuration

(see Chapter 4.7.6, page 48)

￭ Measuring parameters ￭ Calibration param.

￭ Values ￭ Data ￭ Criterion ￭ Output date/time ￭ Output headers ￭ Calibration data

￭ Sensor list ￭ New sensor ￭ Delete sensor

￭ Report ￭ Line feed ￭ Printer

￭ Last decimal place ￭ Date ￭ Time ￭ Power off after ￭ Turn off LCD after ￭ Brightness ￭ Program version ￭ Language

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User

(see Chapter 4.7.7, page 49)

Service/Diagnosis

￭ User ￭ Dialog type

pH Meter/Conductometer

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4.6.4 914 pH/Conductometer

Table 5 914 pH/Conductometer – menu structures

4 Operation

Menu Parameters pH/U/T

(see Chapter 4.7.1, page 38)

Parameters Κ/TDS/Sal/ρ/T

(see Chapter 4.7.2, page 39)

Measured values

(see Chapter 4.7.3, page 40)

Sensors

(see Chapter 4.7.4, page 42)

Report

(see Chapter 4.7.5, page 47)

Configuration

(see Chapter 4.7.6, page 48)

￭ Measuring parameters ￭ Calibration param.

￭ Values ￭ Data ￭ Criterion ￭ Output date/time ￭ Output headers ￭ Calibration data

￭ Sensor list ￭ New sensor ￭ Delete sensor

￭ Report ￭ Line feed ￭ Printer

￭ Last decimal place ￭ Date ￭ Time ￭ Power off after ￭ Turn off LCD after ￭ Brightness ￭ Program version ￭ Language

pH Meter/Conductometer

User

(see Chapter 4.7.7, page 49)

Service/Diagnosis

￭ User ￭ Dialog type

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4.7 Menu dialogs

4.7.1 Parameters pH/U/T and Parameters pH/U/T IS

The Parameters pH/U/T menu dialog for the parameters Measurement and Calibration is shown below with the structure and the description.

Measuring parame-

ters ▶

Menu dialog for the Measuring parameters.

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Measuring mode

Sensor name

Order number

Serial number

Temperature

Delta measure-

ment mV

Selection dialog for selecting the measuring mode.

￭ pH

The pH value is output.

￭ U

The potential value is output in mV.

￭ T

The temperature is output in °C.

Selection dialog for selecting a sensor from the sensor list.

In instruments with iTrodes, this is only a display field.

Display field with the sensor's Order number.

Display field with the sensor's Serial number.

Editing dialog for the manual entry of the measuring temperature.

￭ Default value: 25.0 °C / input range: –999.9 - +999.9 °C

Does not apply for instruments with iTrodes.

Selection dialog

￭ on: with the input field for the Reference

with default value: 0.0 mV / input range: –1,500.0 - +1,500.0 mV

￭ off: is the default setting

￭￭￭￭￭￭￭￭

Calibration param. ▶

Temperature

Report

Number of buf-

fers

Menu dialog for the Calibration param..

Editing dialog for the manual entry of the calibration temperature.

￭ Default value: 25.0 °C / input range: 0.0 - 99.9 °C

Selection dialog

￭ on ￭ off: is the default setting

Selection dialog for the Number of buffers that are used for calibration.

￭ Default value: 2 / input range: 1 - 5

pH Meter/Conductometer

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4 Operation

Buffer type

Selection dialog for selecting the buffer type.

￭ Available buffers and their values (see Chapter 7.1, page 66) ￭ If required, the preset values may be adjusted for the Special buffer type.

Default value: 7 / input range: –19.999 - +19.999

4.7.2 Parameters Κ/TDS/Sal/ρ/T

The Parameters Κ/TDS/Sal/ρ/T menu dialog for the parameters Measurement and Calibration is shown below with the structure and the

description.

Measuring parame-

ters ▶

Measuring mode

Menu dialog for the Measuring parameters.

Selection dialog for selecting the Measuring mode.

￭ Conductivity K

The conductivity of the sample is output.

￭ TDS

(Total Dissolved Solids)

￭ Salinity

The salinity is output.

￭ ρ

The resistance value is output.

￭ T

The temperature is output.

Sensor name

Order number

Serial number

Temperature

Reference temp.

Temp. compens.

TDS factor

Calibration param. ▶

Selection dialog for a sensor from the sensor list.

Display field for the Order number of the selected sensor.

Display field for the Serial number of the selected sensor.

Editing dialog for the entry of the measuring temperature.

￭ Default value: 25.0 °C / input range: –999.9 - +999.9 °C

Editing dialog for the entry of the reference temperature of the calibration standard.

￭ Default value: 25.0 °C / input range: 0 - 99.9 °C

Editing dialog for the entry of the temperature compensation value.

￭ Default value: 2.07%/°C / input range: 0.00 - 9.99%/°C ￭ DIN

Editing dialog for the entry of the factor value for the TDS calculation.

￭ Default value: 0.40 / input range: 0.40 - 1.00 °C

Menu dialog for the Calibration param..

pH Meter/Conductometer

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4.7 Menu dialogs

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Temperature

Reference temp.

Editing dialog for the manual entry of the calibration temperature.

￭ Default value: 25.0 °C / input range: 0.0 - 99.9 °C

Editing dialog for the entry of the reference temperature of the calibration standard.

￭ Default value: 25.0 °C / input range: 0.0 - 99.9 °C

Stand. conduct.

Temp. compens.

Report

Editing dialog for the entry of the calibration standard value.

￭ Default value: 12.800 mS/cm / input range: 0.0000 - 2,000.0 mS/cm

Editing dialog for the entry of the temperature compensation.

￭ Default value: 2.07%/°C / input range: 0.00 - 9.99%/°C

Selection dialog

￭ on ￭ off: is the default setting

4.7.3 Measured values

The Measured values menu dialog is shown below with the structure and the description.

Values

1. Selection dialog for viewing and deleting the Values on the instrument.

2. Selection dialog to indicate how the Values are to be saved on the instrument for output.

￭ view

The measured values are shown individually on the display and can be toggled individually with the arrow keys. In addition, you can navigate in the measured value list as follows using the

key:

– If you push the key briefly, then the last measured value will be dis-

played.

– If you hold the key for longer, then the first measured value will be

displayed.

￭ delete all

All measured values on the instrument will be irreversibly deleted.

￭ delete last

The latest (newest) measured value will be irreversibly deleted.

￭ save as CSV

The currently saved measured values will be saved on the instrument as a CSV file (see "CSV file", page 57).

￭ save as PC/LIMS

The currently saved measured values will be saved on the instrument as PC/ LIMS file (see "PC/LIMS report", page 57).

￭￭￭￭￭￭￭￭

Data

Selection dialog to indicate whether the Data are to be printed and/or saved.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

4 Operation

￭ print:

￭ save:

￭ print+save:

Criterion

Selection dialog to indicate when the Measured values are applied during the measurement.

￭ immediately

The displayed measured value will be immediately applied.

￭ time-dependent

The measured value will be applied during a Time interval that can be set. For the PC/LIMS report, the individual measured values are grouped in a data group. The interval ends after the Stop time has been achieved. The parameters are as follows:

– Time interval in seconds

Default value: 4 s / input range: 1 - 999,999 s

– Stop time in seconds

Default value: off / input range: 1 - 999,999 s

￭ when changed

The subsequent measured value will only be applied automatically if the deviation from the previous measured value is greater than the value delta pH/T/mV/Κ defined here.

– Delta pH

Default value: 0.50 pH / input range: 0.10 - 16.00 pH

– Delta T(pH)

Default value: 0.5 °C / input range: 0.1 - 100.0 °C

– Delta mV

Default value: 30.0 mV / input range: 0.1 - 999.9 mV

– Delta κ

Default value: 0.1 mS/cm / input range: 0.0001 - 10 mS/cm

– Delta T(κ)

Default value: 0.5 °C / input range: 0.1 - 100.0 °C

– Stop time

Default value: off / input range: 1 - 999,999 s

– Primary channel

Selection dialog for selecting the measuring channel that has to fulfill the change criterion.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

4.7 Menu dialogs

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭ drift-dependent

The measured value will be applied when the value is stable according to the drift criterion. The drift thresholds are preset and cannot be changed:

– pH measurement: 0.028 pH/min – Potential measurement U/mV: 1.875 mV/min – Temperature measurement T/°C: 0.974 °C/min

For the conductivity, various drift thresholds are stored (depending on the measuring range):

– 0.005 mS/cm/min up to 16 µS/cm – 0.5 mS/cm/min between 16 µS/cm and 1 mS/cm – 10 mS/cm/min for 1 mS/cm and higher

For instruments with two measuring channels, the primary measuring channel for the fulfillment of the drift criterion has to be selected.

– Primary channel

Selection dialog for selecting the measuring channel that has to fulfill the drift criterion.

pH/mV or Cond.

Output date/time

Output headers

Calibration data

4.7.4 Sensors

Selection dialog for selecting whether a time stamp is to be assigned to a measured value.

￭ on: Measured values contain a time stamp on the report. ￭ off: Measured values do not contain a time stamp on the report.

Default value: off

Selection dialog for selecting how the headers are output.

￭ once ￭ always: is the default setting ￭ off

Selection dialog for selecting whether the main Calibration data is assigned for the output of the measured values.

￭ on ￭ off: is the default setting

The Sensors menu dialog is shown below with the structure and the description.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

4 Operation

NOTE

Extent of the menu dialog

Depending on the instrument version and the sensor type, not all or only the specific menu lines are available in the instrument's menu dialog.

The overview below includes a description of all menu lines.

￭ Menu lines that are available only for pH measurement are marked

with the [pH] icon.

￭ Menu lines that are available only for conductivity are marked with

the [K] icon.

NOTE

iTrodes

Sensor list ▶

Selection

Sensor name

Sensor type

iTrodes sensors contain own data in the data memory which become

available directly in the sensor data when the sensors are connected to the instrument.

Some of this data cannot be edited.

An available sensor can be selected in the Sensor list. The individual menu lines are then also available in accordance with the selected sensor.

Selection dialog for selecting an identified sensor for editing and viewing the individual data.

￭ k default ￭ metal def. ￭ pH default ￭ temp default ￭ etc.

Additional sensors entered by the user.

Editing dialog for changing the sensor name.

Display field for the sensor type.

￭ pH electrode ￭ Conductivity ￭ Metal electrode ￭ Temp. sensor ￭ Other sensor...

Order number

pH Meter/Conductometer

Editing dialog for the entry/modification of the Order number.

￭￭￭￭￭￭￭￭

4.7 Menu dialogs

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Only displayed for iTrodes.

Serial number

Editing dialog for the entry/modification of the Serial number.

Only displayed for iTrodes.

Slope Editing dialog for the entry/modification of the Slope.

￭ Default value: 100.00 / input range: 0.10 - 990.00%

pH(0) Editing dialog for the entry/modification of pH(0).

￭ Default value: 7.000 / input range: –99.999 - +99.999

Cell constant Editing dialog for the entry/modification of the Cell constant.

￭ Default value: 1.00 /cm / input range: 0.001 - 500.0 /cm

Calibration

temp.

Reference temp.

Temp. compens. Display field indicating the value for temperature compensation.

Temp. calibra-

tion

Display field indicating the temperature in °C from the last calibration.

Display field indicating the reference temperature in °C.

￭ Default value: 2.07%/°C / input range: 0.00 - 9.99%/°C

Display field indicating the measurement method for temperature measurement of the last calibration.

Calibration date

Calibration time

Calibration

interval

Temp. sensor

Slope limit value

Display field for the last Calibration date.

Display field for the last Calibration time.

Editing dialog for the entry of time in days for the Calibration interval.

￭ Default value: off / input range: 1 - 999 d ￭ off disables the Calibration interval.

Selection dialog to indicate the temperature sensor type for the respective sensor.

￭ Pt1000: is the default setting ￭ NTC

– R(25°C)

Editing dialog

Default value: 30,000 Ω / input range: 10,000 - 100,000 Ω

– B value

Editing dialog

Default value: 4,100 Κ / input range: 1,000 - 9,999 Κ

Selection dialog for selecting whether the limit value is to be applied.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Slope lower limit Editing dialog for the entry of the lower limit value.

4 Operation

￭ on ￭ off: is the default setting

￭ Default value: 95.0 / input range: 1.0 - 999.9%

Slope upper

limit

Limit value

pH(0)

pH(0) lower limit Editing dialog for the entry of the lower limit value.

pH(0) upper

limit

Limit value c Selection dialog for selecting whether the limit value is to be applied.

c lower limit Editing dialog for the entry of the lower limit value.

c upper limit Editing dialog for the entry of the upper limit value.

Editing dialog for the entry of the upper limit value.

￭ Default value: 103.0 / input range: 1.0 - 999.9%

Selection dialog for selecting whether the limit value is to be applied.

￭ on ￭ off: is the default setting

￭ Default value: 6.40 / input range: 0.00 - 99.99

Editing dialog for the entry of the upper limit value.

￭ Default value: 8.00 / input range: 0.00 - 99.99

￭ on ￭ off: is the default setting

￭ Default value: 0.400 /cm / input range: 0.001 - 500 /cm

New sensor ▶

Sensor type

Sensor name

Order number

Serial number

Slope

pH Meter/Conductometer

￭ Default value: 0.550 /cm / input range: 0.001 - 500 /cm

Menu dialog with the individual menu lines for entering a new sensor.

Selection dialog for the sensor type.

￭ pH electrode ￭ Conductivity ￭ Metal electrode ￭ Temp. sensor ￭ Other sensor...

Editing dialog for entering the sensor name.

Editing dialog for entering the Order number.

Editing dialog for entering the Serial number.

Editing dialog for the entry/modification of the Slope.

￭￭￭￭￭￭￭￭

4.7 Menu dialogs

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭ Default value: 100.00 / input range: 0.10 - 999.99%

pH(0)

Cell constant Editing dialog for the entry/modification of the Cell constant.

Calibration

interval

Temp. sensor

Editing dialog for the entry/modification of pH(0).

￭ Default value: 1.00 /cm / input range: 0.001 - 500 /cm

Editing dialog for the entry of time in days for the Calibration interval.

￭ Default value: off / input range: 1 - 999 d ￭ off disables the Calibration interval.

Selection dialog to indicate the temperature sensor type for the respective sensor.

￭ Pt1000 ￭ NTC

– R(25°C)

Editing dialog

Default value: 30,000 Ω / input range: 10,000 - 100,000 Ω

– B value

Editing dialog

Default value: 4,100 Κ / input range: 1,000 - 9,999 Κ

Slope limit value Selection dialog for selecting whether the limit value is to be applied.

￭ on ￭ off: is the default setting

Slope lower limit Editing dialog for the entry of the lower limit value.

￭ Default value: 95.0 / input range: 1.0 - 999.9%

Slope upper

limit

Limit value

pH(0)

pH(0) lower limit Editing dialog for the entry of the lower limit value.

pH(0) upper

limit

Limit value c Selection dialog for selecting whether the limit value is to be applied.

Editing dialog for the entry of the upper limit value.

￭ Default value: 103.0 / input range: 1.0 - 999.9%

Selection dialog for selecting whether the limit value is to be applied.

￭ on ￭ off: is the default setting

￭ Default value: 6.40 / input range: 0.00 - 99.99

Editing dialog for the entry of the upper limit value.

￭ Default value: 8.00 / input range: 0.00 - 99.99

￭ on

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

c lower limit Editing dialog for the entry of the lower limit value.

c upper limit Editing dialog for the entry of the upper limit value.

4 Operation

￭ off: is the default setting

￭ Default value: 0.400 /cm / input range: 0.001 - 500 /cm

￭ Default value: 0.550 /cm / input range: 0.001 - 500 /cm

Delete sensor

4.7.5 Report

Report

Selection dialog for deleting a sensor.

The data will be irreversibly deleted.

The Report menu dialog is shown below with the structure and the description.

NOTE

Printer

pH Meter/Conductometer instruments support various printer types for report output. If your printer is not listed, please use the printer Universal (ESC-POS), which has appropriate setting parameters.

Selection dialog for data output in the Report.

￭ Calibration pH ￭ Calibration pH IS ￭ Calibration κ ￭ Sensors ￭ Configuration ￭ Parameters pH ￭ Parameters pH IS ￭ Parameters κ ￭ Meas. values ￭ All reports

Line feed

Printer

Editing dialog to indicate the lines to be inserted at the end of the report.

￭ Default value: 2 lines / input range: 0 - 99 lines

Selection dialog to indicate the printer for report output.

￭ HP Officejet Pro

Page printer with paper size A4

￭ HP Laserjet Pro

Page printer with paper size A4

￭ Epson (ESC-POS)

Roll printer with paper width 80 mm

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

4.7 Menu dialogs

￭ Seiko (ESC-POS)

￭ Citizen ESC-POS)

￭ Custom (ESC-POS)

￭ Universal (ESC-POS)

4.7.6 Configuration

The Configuration menu dialog for all instrument settings is shown below with the structure and the description.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Roll printer with paper width 110 mm

Roll printer with paper width 80 mm

Roll printer with paper width 60 mm

Universal roll printer with variable settings:

– Paper width

50 - 200 mm

– Print resolution

100 - 600 dpi

– Print type

Line or Matrix

Last decimal place

Date

Time

Power off after

Turn off LCD after

Selection dialog for selecting whether the Last decimal place is displayed for the pH measured values with three digits at most.

Drift value monitoring is not influenced by this setting.

￭ on: Last decimal place is displayed. ￭ off: Last decimal place is not displayed.

Editing dialog for entering the system date.

Date format: YYYY-MM-DD

Editing dialog for entering the system time.

Time format: hh:mm:ss

Editing dialog for entering the time for the function Power off after x minutes. The instrument shuts down automatically after this time.

This function is disabled while the instrument is charged and during time-dependent recording of measured values with a set time interval.

￭ Default value: 15 / input range: 1 - 60, or ￭ off for continuous operation.

Editing dialog for entering the time for the function Turn off LCD after x minutes. The display turns off after this time and can be turned back on again

￭￭￭￭￭￭￭￭

with any key other than the key.

￭ Default value: 15 / input range: 1 - 60, or ￭ auto for dimming after 20 seconds and switching off the display after

another 60 seconds.

￭ off for continuous operation.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

4 Operation

Brightness

Program version

Language

Change password

Selection dialog for the display Brightness.

￭ 100 % ￭ 80 % ￭ 60 % ￭ 40 % ￭ 20 %

Display field for the current Program version.

Selection dialog for selecting the instrument Language.

￭ Deutsch ￭ English: default factory setting ￭ Español ￭ Français ￭ Português ￭中文

Editing dialog for customizing the password for the Expert user rights.

The default setting ex works is Expert.

1. Old password

2. New password

3. Confirm

Service/Diagnosis ▶

Password

4.7.7 User

User

Dialog type

Menu dialog with password-protected access for Metrohm Service.

Password entry for the Service/Diagnosis menu functions.

The User menu dialog for setting user restrictions and user data is shown below with the description.

Editing dialog for entering the user name.

The entered value is only displayed in the one-channel main screen.

Selection dialog for the Dialog type.

￭ Expert

In the Dialog type Expert, all functions are unlocked. When changing from Routine to Expert, you have to enter a Password to unlock the locked menu structure.

￭ Routine

In the Dialog type Routine, the following sections in the menu are disabled:

– Sensors – Configuration

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

4.8 pH measurement

This chapter describes the required steps to carry out a simple pH measurement with calibration. The description is limited to only the indispensable steps and will enable you to carry out first measurements with the instrument directly.

4.8.1 pH electrode calibration

NOTE

Measuring channel selection

In order to perform the calibration, you have to select the corresponding measuring channel in the main dialog.

You cannot perform a calibration in the two-channel view in the main dialog.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

pH calibration

By default, the calibration parameters are set for calibration with two Metrohm buffer solutions (see Chapter 4.7.1, page 38). If you would like to use other buffers, you have to select the corresponding buffer type and the number of buffer solutions.

If the Report selection dialog is set to on in the Calibration param. menu dialog, then the calibration data will be output immediately.

Starting the calibration with the first buffer solution

￭ Start the calibration with the key. ￭ Rinse the pH electrode with water and immerse it in the first buf-

fer solution and then confirm with the key.

￭ The calibration temperature is measured with the connected tem-

perature sensor and added to the calibration data. If no temperature sensor is connected, then the temperature has to be entered manually.

￭ The first buffer solution is measured.

Continuing the calibration with second buffer solution

￭￭￭￭￭￭￭￭

￭ Remove the pH electrode from the first buffer solution and rinse

with water.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭ Immerse the pH electrode in the second buffer solution and con-

tinue the calibration procedure with the key.

￭ The second buffer solution is measured.

NOTE

Buffer exchange

If the buffer solution was not exchanged, then the message 912-181 Same buffer will appear.

Exchange the buffer solution and continue the calibration with the

key.

Result of the calibration

￭ The result of the calibration is displayed in a diagram.

4 Operation

￭ Finish the calibration with the key.

(The instrument will automatically change to the main dialog after 30 seconds.)

NOTE

Limit values exceeded

If the calibration data is outside the limits defined as calibration parameters, a corresponding message will be displayed.

You can then accept this calibration data nevertheless with the

key, or you can reject it with the key and use the exist-

ing calibration data.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

4.8 pH measurement

4.8.2 Measurement

Measured value criteria

You can set the various criteria for defining the measured value determination as follows (see Chapter 4.7.3, page 40):

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

NOTE

Selecting the printout criterion

￭ If the measured value found is to be directly printed out as a mea-

sured value report, then you have to set the required printout criterion (see Chapter 4.5.3, page 28).

Selecting the measured value criterion

￭ This criterion defines the conditions as to when the measured

value is saved on the instrument and/or printed out.

Carrying out the measurement

￭ Rinse the sensor with water and immerse it in the sample.

￭ Select the Print/save measured value button with the

keys.

￭ Trigger printing and/or saving of the measured value with the

key.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

NOTE

Measured value recording

Depending on the settings of the measured value criterion, the recording of the measured value may take some time. During the measurement, hold the sensor steady and do not touch the sample vessel with it.

For measurements that take longer, we recommend using a stand to secure the sensor in place.

Finishing measurements

After the last measurement, rinse the sensor and follow the storage instructions for the sensor.

4.9 Conductivity measurement

4 Operation

This chapter describes the required steps to carry out a simple conductivity measurement with calibration. The description is limited to only the indispensable steps and will enable you to carry out first measurements with the instrument directly.

4.9.1 Determination of the cell constant (calibration)

NOTE

Measuring channel selection

In order to perform the calibration, you have to select the corresponding measuring channel in the main dialog.

You cannot perform a calibration in the two-channel view in the main dialog.

Determination of the cell constant

The calibration parameters are set to default values (see Chapter 4.7.2, page 39).

pH Meter/Conductometer

If the Report selection dialog is set to on in the Calibration param. menu dialog, then the calibration data will be output immediately.

Starting the calibration

￭￭￭￭￭￭￭￭

4.9 Conductivity measurement

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭ Start the calibration with the key. ￭ Rinse the conductivity sensor with water and immerse it in the

first standard solution and then confirm with the key.

￭ The calibration temperature is measured with the connected tem-

perature sensor and added to the calibration data. If no temperature sensor is connected, then the temperature has to be entered manually.

￭ Enter the reference temperature for the standard solution. ￭ Enter the conductivity value of the standard solution at the refer-

ence temperature.

￭ Enter the coefficient for the current temperature and the selected

reference temperature for temperature compensation.

￭ Trigger the calibration with the standard solution with the

key.

Result of the calibration

￭ The result of the calibration (cell constant) is recorded and stored

for the respective sensor.

￭ Calibration is completed and the instrument will automatically

change back to the main dialog after 30 seconds.

4.9.2 Measurement

Measured value criteria

You can set the various criteria for defining the measured value determination as follows (see Chapter 4.7.3, page 40):

NOTE

Limit values exceeded

If the calibration data is outside the limits defined as calibration parameters, a corresponding message will be displayed.

You can then accept this calibration data nevertheless with the

key, or you can reject it with the key.

NOTE

Selecting the printout criterion

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭ If the measured value found is to be directly printed out as a mea-

sured value report, then you have to set the required printout criterion (see Chapter 4.5.3, page 28).

Selecting the measured value criterion

￭ This criterion defines the conditions as to when the measured

value is saved on the instrument and/or printed out.

Carrying out the measurement

￭ Rinse the sensor with water and immerse it in the sample.

￭ Select the Print/save measured value button with the

keys.

￭ Trigger printing and/or saving of the measured value with the

key.

4 Operation

NOTE

Measured value recording

For measurements that take longer, we recommend using a stand to secure the sensor in place.

Finishing measurements

After the last measurement, rinse the sensor and follow the storage instructions for the sensor.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

4.10 Outputting reports/measured values

The pH Meter/Conductometer supports the output of various printouts and data transfers for displaying the calibration and measured values.

4.10.1 Printing out

The printouts are divided into various groups:

￭ Printing out values directly after generation:

– Calibration data

Calibration data can be printed out if on is selected under:

Menu ▶ Parameters X ▶ Calibration param. ▶ Report

– Measured values

Direct printing of the measured values can be done with the

or buttons.

￭ Printing saved values in the following areas as reports:

– Calibration – Sensors – Configuration – Parameters – Measured values

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Printing of report data can be done via the Report selection dialog under:

Menu ▶ Report

4.10.2 PC/LIMS and CSV data transfer

NOTE

USB cable

Data transfer to a PC requires a connection via the supplied USB cable (6.2151.110).

The optional USB Y cable (6.2151.140) cannot be used.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

4 Operation

NOTE

Data output

For a data output, save or print+save has to be set for the recording of measured values so that this data is saved on the instrument.

Data generation

The measured value data has to be re-generated before any data transfer.

The data on the instrument memory can be saved in two data formats:

PC/LIMS report

Data in PC/LIMS format can be imported into and processed in the Metrohm program tiBase for evaluation.

CSV file

CSV data can be imported as text data in MS Excel and processed for evaluation.

The following parameters are required for text conversion:

￭ Data type = separated with a semicolon ￭ Data source = Unicode (UTF-8) ￭ Data format of the rows = standard

Generating/transferring report data

NOTE

USB interface

If the report data is to be generated while the instrument is connected with the PC, then the connection will be briefly interrupted.

After the report data has been generated, the connection will be automatically established again.

Generating report data

You can generate the report data by selecting:

pH Meter/Conductometer

save as PC/LIMS or save as CSV

under Menu ▶ Measured values ▶ Values.

￭￭￭￭￭￭￭￭

4.10 Outputting reports/measured values

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Connecting the instrument to the PC

Connect the instrument to the PC using the supplied USB cable (6.2151.110).

The instrument is automatically recognized as a removable drive.

Transferring report data

The generated files are stored on the instrument as follows and can be transferred to the PC for evaluation and report generation:

￭ PCLIMS_X.UTF8 is in the directory PCLIMS ￭ MEASREPORT.CSV is in the directory CSV

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

5 Operation and maintenance

5.1 General notes

5.1.1 Care

pH Meter/Conductometer instruments require appropriate care. Excess contamination of the instruments may result in functional disruptions and a reduction in the service life of the otherwise sturdy mechanics and electronics.

Spilled chemicals and solvents should be removed immediately. In particular, the plug connections should be protected from contamination.

CAUTION

Although this is largely prevented by design measures, Metrohm Service should immediately be notified if aggressive media have found their way into the instrument.

5 Operation and maintenance

5.1.2 Maintenance by Metrohm Service

Maintenance of the pH Meter/Conductometer is best carried out as part of annual service, which is performed by specialist personnel from Metrohm. A shorter maintenance interval may be necessary if you frequently work with caustic and corrosive chemicals.

Metrohm Service offers every form of technical advice for maintenance and service of all Metrohm instruments.

5.1.3 Sensor care

Sensors are sensitive and require appropriate handling and care.

NOTE

Sensor leaflet

Handling, care and storage are important factors for the correct and accurate functioning of sensors.

Therefore, please note the specific information on the respective sensor leaflets.

You can download the leaflets from the Internet at

http://www.metrohm.com.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

5.2 Quality management and qualification with Metrohm

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

5.2 Quality management and qualification with Metrohm

Quality management

Metrohm offers you comprehensive support in implementing quality management measures for instruments and software.

Qualification

Please contact your local Metrohm representative for support in qualification of instruments and software. The Installation Qualification (IQ) and Operational Qualification (OQ) are offered by Metrohm representatives as a service. They are carried out by trained employees using standardized qualification documents and in accordance with the currently applicable requirements of the regulated industry.

Maintenance

The electronic and mechanical functional groups of Metrohm instruments can and should be checked by specialist personnel from Metrohm as part of a regular preventive maintenance schedule. Please ask your local Metrohm representative regarding the precise terms and conditions involved in concluding a corresponding maintenance agreement.

For detailed information on this topic, please visit www.metrohm.com.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

6 Troubleshooting

6.1 General

If you experience problems during measurements, then you can check the following aspects to eliminate them:

Application Difficult sample matrices or interfering influences may render accurate

measurements impossible (e.g. insufficient ionic strength, presence of interfering ions, etc.).

Our Application Bulletins and Application Notes will support you in choosing the appropriate analysis conditions and configuring the instrument method.

Buffer solutions / standard solutions

Sensors The sensors are the most important component in the entire measuring

Device If the pH Meter/Conductometer might be the cause of a measuring

The precision of the measurements mainly depends on the correct calibration of the sensors. To do so, you should use clean and fresh buffer or standard solutions.

A common cause of incorrect calibrations is, for example, the use of an old pH 10 or pH 12 buffer. The pH value of such buffers may markedly deviate from the certified pH value of a new buffer as a result of the introduction of CO2 from the air.

system.

For the correct handling of sensors, please read the corresponding leaflets.

problem, check all configuration and parameter settings first.

The pH Meter/Conductometer will notify you of problems with respective messages directly during operation.

You can find an explanation of these messages in the chapter Messages.

(see Chapter 6.4, page 65)

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

6.2 Problems

The following list describes some general problems that might occur during measurements. Furthermore, the possible causes and solution approaches are described.

Sensor treatment

Follow the instructions given in the respective leaflets for sensors cleaning and maintenance.

6.2.1 Troubleshooting

Problem

Cause Remedy

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

NOTE

Measured value setting is sluggish.

No measuring signal.

The instrument does not start.

The glass membrane or the diaphragm is contami-

￭ Clean the electrode following the instruc-

tions in the leaflet.

nated.

The sensor is not con-

￭ Connect the sensor.

nected.

Wrong measuring channel

￭ Select the correct measuring channel.

is selected.

The sensor is defective. ￭ Replace the sensor.

The cable is defective. ￭ Replace the cable.

The electrode's reference system contains air.

The measuring input and/ or the measuring channel is defective.

The instrument battery is not charged.

￭ Perform an electrode maintenance as

described in the leaflet.

￭ Send the measuring instrument to the

Metrohm Service for inspection and, if necessary, repair.

￭ Connect the instrument to the power sup-

ply unit to charge it. The battery is only charged when the instrument is on. (total charging time: approx. 9 hours)

The measured value drift criterion is not fulfilled.

￭￭￭￭￭￭￭￭

The glass membrane or the diaphragm is contaminated.

￭ Clean the electrode following the instruc-

tions in the leaflet.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Problem Cause Remedy

6 Troubleshooting

The measured value is evidently wrong.

The pH value or the temperature of the measuring solution is not stable.

Conductivity is too low

￭ Measure under exclusion of air. ￭ Regulate the measuring solution's tempera-

ture.

￭ Use a suitable sensor.

because of an unsuitable sensor.

Measurement takes place

￭ Use a suitable sensor.

in an organic solution.

Non-Metrohm power supply unit used for charging

￭ Use only the supplied power supply unit

during measurement operation.

the battery.

pH calibration is faulty. ￭ Check/repeat calibration.

￭ Check/replace the buffer. ￭ Check the buffer selection in the settings.

Conductivity calibration is faulty.

￭ Check/repeat calibration. ￭ Check the value for the standard. ￭ Check the value for the reference tempera-

ture.

￭ Check the value for temperature compen-

sation.

The slope is insufficient during calibration.

The temperature input is

￭ Enter the correct measuring temperature.

wrong.

The wrong temperature sensor type is selected.

￭ Check the temperature sensor type (Pt1000

or NTC) and select the correct one, if necessary.

The glass membrane or the diaphragm is contaminated.

￭ Clean the membrane or the diaphragm fol-

lowing the instructions in the corresponding leaflet.

The electrolyte is overaged. ￭ Replace the electrolyte.

The sensor is defective. ￭ Replace the sensor.

The glass membrane or the diaphragm is contami-

￭ Clean the electrode following the instruc-

tions in the leaflet.

nated.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

6.3 Restarting/resetting the instrument

Problem Cause Remedy

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

No hydrated layer is present on the glass membrane after measurements in water-free solutions.

The buffer solutions are not OK.

The sensor is "worn out". ￭ Replace the sensor.

￭ Hydrate the electrode between the meas-

urements.

￭ Replace the buffer solutions.

6.3 Restarting/resetting the instrument

6.3.1 Instrument reset

In case of a malfunction, the instrument might not work correctly anymore and not be switched off.

You can switch off the instrument using the following key combination for approx. two seconds:

￭￭ The instrument can be switched on again.

＋

NOTE

Data storage

The currently measured data and modified settings cannot be saved if the instrument is reset.

6.3.2 Resetting the instrument to factory settings

This function deletes all user data on the instrument. Afterwards, the instrument will be in the state as delivered from the manufacturer with the default settings.

CAUTION

User data

The user data will be irreversibly deleted.

You can reset the instrument with the following key combination during startup:

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭＋￭ Afterwards, a message will be displayed saying that the user data has

6.4 Messages

The instruments notify you of possible errors or operation problems with various specific messages. A message as shown in the following example will appear on the current display.

6 Troubleshooting

been deleted.

Figure 18 Example of a message

Message number and message

Message text

Symbol

Remedy

NOTE

Message number

Each message contains a message number in the top left-hand corner. Please indicate this number in the case of queries or complaints.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7 Appendix

7.1 Saved buffer series

The temperature-dependent pH values of the most important commercially available pH buffer solutions are stored in pH Meter/Conductome- ter instruments for automatic buffer recognition during pH calibration.

In addition to the Metrohm buffer solutions, other reference buffers are also included in the tables.

CAUTION

Buffer quality

The precision of pH measurements mainly depends on the correct calibration of the measuring chain. To do so, you should use clean and fresh buffer solutions. A common cause of incorrect calibration is, for example, the use of an old pH 10 or pH 12 buffer. The pH value of a buffer solution may markedly deviate from the certified pH value of a new buffer solution as a result of the introduction of CO2 from the air.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

The following tables provide an overview of the stored pH(T) series:

NOTE

pH values printed in bold are the values for the reference temperature of the respective buffer set.

pH values represented in italics are interpolated or extrapolated values. The other pH values correspond to the manufacturer's specifications.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

7.1.1 Metrohm

7 Appendix

Table 6 Metrohm buffer solutions

Metrohm

Temp.

(°C)

0 3.99 7.11 9.27

5 3.99 7.08 9.18

10 3.99 7.06 9.13

15 3.99 7.04 9.08

20 3.99 7.02 9.04

25 4.00 7.00 9.00

30 4.00 6.99 8.96

35 4.01 6.98 8.93

40 4.02 6.98 8.90

45 4.03 6.97 8.87

50 4.04 6.97 8.84

55 4.06 6.97 8.81

60 4.07 6.97 8.79

65 4.09 6.98 8.76

4.00

7.00

9.00

70 4.11 6.98 8.74

75 4.13 6.99 8.73

80 4.15 7.00 8.71

85 4.18 7.00 8.70

90 4.20 7.01 8.68

95 4.23 7.02 8.67

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7.1.2 NIST (according to DIN standard 19266, 2000)

Table 7 NIST buffer solutions

NIST (according to DIN standard 19266, 2000)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Temp.

(°C)

0 - 4.010 6.984 9.464 13.423

5 1.668 4.004 6.950 9.392 13.207

10 1.670 4.001 6.922 9.331 13.003

15 1.672 4.001 6.900 9.277 12.810

20 1.676 4.003 6.880 9.228 12.627

25 1.680 4.008 6.865 9.184 12.454

30 1.685 4.015 6.853 9.144 12.289

35 1.691 4.025 6.843 9.107 12.133

40 1.697 4.036 6.837 9.076 11.984

45 1.704 4.049 6.834 9.046 11.841

50 1.712 4.064 6.833 9.018 11.705

55 1.715 4.075 6.834 8.985 11.574

60 1.723 4.091 6.836 8.962 11.449

65 1.732 4.108 6.840 8.941 -

1.000

4.000

7.000

9.000

13.000

70 1.743 4.126 6.845 8.921 -

75 1.754 4.145 6.852 8.902 -

80 1.766 4.164 6.859 8.885 -

85 1.778 4.185 6.867 8.867 -

90 1.792 4.205 6.877 8.850 -

95 1.806 4.227 6.886 8.833 -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

7.1.3 DIN (according to DIN standard 19267, 2012)

Table 8 DIN buffer solutions

DIN (according to DIN standard 19267, 2012)

7 Appendix

Temp.

(°C)

0 1.08 - 4.67 6.89 9.48 -

5 1.08 - 4.66 6.86 9.43 -

10 1.09 3.10 4.66 6.84 9.37 13.37

15 1.09 3.08 4.65 6.82 9.32 13.15

20 1.09 3.07 4.65 6.80 9.27 12.96

25 1.09 3.06 4.65 6.79 9.23 12.75

30 1.10 3.05 4.65 6.78 9.18 12.61

35 1.10 3.05 4.66 6.77 9.13 14.44

40 1.10 3.04 4.66 6.76 9.09 12.29

45 1.10 3.04 4.67 6.76 9.04 12.13

50 1.11 3.04 4.68 6.76 9.00 11.98

55 1.11 3.04 4.69 6.76 8.97 11.84

60 1.11 3.04 4.70 6.76 8.92 11.69

65 1.11 3.04 4.71 6.76 8.90 11.56

1.00

3.00

4.00

7.00

9.00

12.00

70 1.11 3.04 4.72 6.76 8.88 11.43

75 1.12 3.04 4.74 6.77 8.86 11.30

80 1.12 3.05 4.75 6.78 8.85 11.19

85 1.12 3.06 4.77 6.79 8.83 11.08

90 1.13 3.07 4.79 6.80 8.82 10.99

95 - - - - - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7.1.4 Fisher

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Table 9 Fisher buffer solutions

Fisher

Temp.

(°C)

0 - 4.01 7.13 10.34

5 1.98 3.99 7.10 10.26

10 1.98 4.00 7.07 10.19

15 2.02 3.99 7.05 10.12

20 2.00 4.00 7.02 10.06

25 2.00 4.00 7.00 10.00

30 2.00 4.01 6.99 9.94

35 2.02 4.02 6.98 9.90

40 2.01 4.03 6.97 9.85

45 2.01 4.04 6.97 9.81

50 2.01 4.06 6.97 9.78

55 - 4.07 6.97 9.74

60 - 4.09 6.98 9.70

65 - 4.11 6.99 9.68

2.00

4.00

7.00

10.00

70 - 4.13 7.00 9.65

75 - 4.14 7.02 9.63

80 - 4.16 7.03 9.62

85 - 4.18 7.06 9.61

90 - 4.21 7.08 9.60

95 - 4.23 7.11 9.60

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

7.1.5 Mettler Toledo

Table 10 Mettler Toledo buffer solutions

7 Appendix

Mettler Toledo

Temp.

(°C)

0 2.03 4.01 7.12 9.52 11.90

5 2.02 4.01 7.09 9.45 11.72

10 2.01 4.00 7.06 9.38 11.54

15 2.00 4.00 7.04 9.32 11.36

20 2.00 4.00 7.02 9.26 11.18

25 2.00 4.01 7.00 9.21 11.00

30 1.99 4.01 6.99 9.16 10.82

35 1.99 4.02 6.98 9.11 10.64

40 1.98 4.03 6.97 9.06 10.46

45 1.98 4.04 6.97 9.03 10.28

50 1.98 4.06 6.97 8.99 10.10

55 1.98 4.08 6.98 8.96 -

60 1.98 4.10 6.98 8.93 -

65 1.98 4.13 6.99 8.90 -

2.00

4.00

7.00

9.00

11.00

70 1.99 4.16 7.00 8.88 -

75 1.99 4.19 7.02 8.85 -

80 2.00 4.22 7.04 8.83 -

85 2.00 4.26 7.06 8.81 -

90 2.00 4.30 7.09 8.79 -

95 - 4.35 7.12 8.77 -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7.1.6 Merck CertiPUR 20 / Titrisol

Table 11 Merck CertiPUR 20 / Titrisol buffer solutions

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Merck CertiPUR 20

Temp.

(°C)

0 2.010 4.050 7.130 9.240 12.580

5 2.010 4.040 7.070 9.160 12.410

10 2.010 4.020 7.050 9.110 12.260

15 2.000 4.010 7.020 9.050 12.100

20 2.000 4.000 7.000 9.000 12.000

25 2.000 4.010 6.980 8.950 11.880

30 2.000 4.010 6.980 8.910 11.720

35 2.000 4.010 6.960 8.880 11.670

40 2.000 4.010 6.950 8.850 11.540

45 2.000 4.000 6.950 8.820 11.440

50 2.000 4.000 6.950 8.790 11.330

55 2.000 4.000 6.950 8.760 11.190

60 2.000 4.000 6.960 8.730 11.040

65 2.000 4.000 6.960 8.715 10.970

2.000

4.000

7.000

9.000

12.000

70 2.010 4.000 6.960 8.700 10.900

75 2.010 4.000 6.960 8.680 10.800

80 2.010 4.000 6.970 8.660 10.700

85 2.010 4.000 6.980 8.650 10.590

90 2.010 4.000 7.000 8.640 10.480

95 - 4.000 7.020 - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible. However, they may be changed by the different manufacturers.

The CertiPUR 20 and Titrisol product lines have the identical values.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

7.1.7 Merck CertiPUR 25

Table 12 Merck CertiPUR 25 buffer solutions

7 Appendix

Merck CertiPUR (25°C)

Temp.

(°C)

0 - - - -

5 4.05 7.09 9.22 10.22

10 4.04 7.08 9.16 10.18

15 4.02 7.04 9.10 10.10

20 4.01 7.02 9.06 10.06

25 4.00 7.00 9.00 10.00

30 3.99 6.98 8.98 9.94

35 3.98 6.98 8.93 9.90

40 3.98 6.97 8.89 9.86

45 3.98 6.97 8.86 9.80

50 3.98 6.97 8.84 9.73

55 - - - -

60 - - - -

65 - - - -

4.00

7.00

9.00

10.00

70 - - - -

75 - - - -

80 - - - -

85 - - - -

90 - - - -

95 - - - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible. However, they may be changed by the different manufacturers.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7.1.8 Beckmann

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Table 13 Beckmann buffer solutions

Beckmann

Temp.

(°C)

0 4.00 7.12 10.32

5 4.00 7.09 10.25

10 4.00 7.06 10.18

15 4.00 7.04 10.12

20 4.00 7.02 10.06

25 4.00 7.00 10.01

30 4.01 6.99 9.97

35 4.02 6.99 9.93

40 4.03 6.98 9.89

45 4.05 6.98 9.86

50 4.06 6.97 9.83

55 4.08 6.98 -

60 4.09 6.98 -

65 4.11 6.99 -

4.00

7.00

10.00

70 4.12 6.99 -

75 4.14 7.00 -

80 4.16 7.00 -

85 4.18 7.01 -

90 4.19 7.02 -

95 4.21 7.03 -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

7.1.9 Radiometer

Table 14 Radiometer buffer solutions

7 Appendix

Radiometer

Temp.

(°C)

0 4.000 7.118 9.464

5 3.998 7.087 9.395

10 3.997 7.059 9.332

15 3.998 7.036 9.276

20 4.001 7.016 9.225

25 4.005 7.000 9.180

30 4.011 6.987 9.139

35 4.018 6.977 9.102

40 4.027 6.970 9.068

45 4.038 6.965 9.038

50 4.050 6.964 9.011

55 4.064 6.965 8.985

60 4.080 6.968 8.962

65 4.097 6.974 8.941

4.010

7.000

9.180

70 4.116 6.982 8.921

75 4.137 6.992 8.900

80 4.159 7.004 8.885

85 4.183 7.018 8.867

90 4.210 7.034 8.850

95 4.240 - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

7.1 Saved buffer series

7.1.10 Baker

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Table 15 Baker buffer solutions

Baker

Temp.

(°C)

0 4.00 7.13 9.23 10.30

5 4.00 7.09 9.17 10.24

10 4.00 7.05 9.10 10.17

15 4.00 7.03 9.05 10.11

20 4.00 7.00 9.00 10.05

25 4.00 6.98 8.96 10.00

30 4.01 6.98 8.91 9.96

35 4.02 6.98 8.88 9.93

40 4.03 6.97 8.84 9.89

45 4.04 6.97 8.81 9.86

50 4.05 6.96 8.78 9.82

55 4.07 6.96 8.76 9.79

60 4.08 6.96 8.73 9.76

65 4.10 6.97 8.71 9.74

4.00

7.00

9.00

10.00

70 4.12 6.97 8.69 9.72

75 4.14 6.98 8.68 9.70

80 4.16 6.98 8.66 9.68

85 4.19 6.99 8.64 9.66

90 4.21 7.00 8.62 9.64

95 - - - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

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pH Meter/Conductometer

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7.1.11 Hamilton DURACAL

Table 16 Hamilton DURACAL buffer solutions

7 Appendix

Hamilton DURACAL

Temp.

(°C)

0 - - - -

5 4.01 7.09 9.45 10.19

10 4.00 7.06 9.38 10.15

15 4.00 7.04 9.32 10.11

20 4.00 7.02 9.26 10.06

25 4.01 7.00 9.21 10.01

30 4.01 6.99 9.16 9.97

35 4.02 6.98 9.11 9.92

40 4.03 6.97 9.06 9.86

45 4.04 6.97 9.03 9.83

50 4.06 6.97 8.99 9.79

55 - - - -

60 - - - -

65 - - - -

4.01

7.00

9.21

10.01

70 - - - -

75 - - - -

80 - - - -

85 - - - -

90 - - - -

95 - - - -

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

pH Meter/Conductometer

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7.1 Saved buffer series

7.1.12 Fluka

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Table 17 Fluka buffer solutions

Fluka

Temp.

(°C)

0 4.030 7.130 9.240

5 4.025 7.090 9.175

10 4.020 7.050 9.110

15 4.010 7.020 9.055

20 4.000 7.000 9.000

25 4.000 6.990 8.965

30 4.000 6.980 8.930

35 4.000 6.975 8.895

40 4.000 9.970 8.860

45 4.000 6.965 8.830

50 4.000 6.960 8.800

55 4.000 6.960 8.775

60 4.000 6.960 8.750

65 4.000 6.965 8.730

4.000

7.000

9.000

70 4.000 6.970 8.710

75 4.000 6.975 8.690

80 4.000 6.980 8.670

85 4.000 6.990 8.655

90 4.000 7.000 8.640

95 4.000 7.010 8.620

NOTE

Update

The values of the individual buffers with the corresponding temperatures are kept up to date as far as possible.

However, they may be changed by the respective manufacturers.

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pH Meter/Conductometer

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8 Technical specifications

8.1 Measuring inputs

The four available instruments are each equipped with specific measuring inputs.

The following table lists the measuring inputs for each instrument and the corresponding measuring modes.

8 Technical specifications

Table 18

Measuring inputs / instrument

Device Measuring inputs / measuring modes

Electrode,

analog

Electrode,

digital

Conductivity Tempera-

ture

Reference

2.912.010 Κ/TDS/Sal/ρ/T

2.913.010 pH/U/T pH/U/T T x

2.914.010 pH/U/T Κ/TDS/Sal/ρ/T

2.914.020 pH/U/T Κ/TDS/Sal/ρ/T T x

Table 19 Specification of the measuring inputs

Measuring range Resolution Measuring accuracy

pH value –13.000 - +20.000 0.001 pH ±0.003 pH

Temperature:

Pt1000

with iConnect

–150 °C - +250 °C

–5 °C - +250 °C

0.1 °C

±0.2 °C (–20 °C - +150 °C)

±0.4 °C (–20 °C - +150 °C)

±0.6 °C (+10 °C - +40 °C)

NTC 30 kΩ

Potential –1,200.0 mV - +1,200.0 mV 0.1 mV ±0.2 mV

Conductance2)0.1 µS - 500 mS 4 significant

places

±0.5% at 0.1 µS - 16 µS

±0.5% at 16 µS - 1 mS

±1.0% at 1 mS - 500 mS

±1 digit, without sensor error, at reference conditions

To obtain the conductivity, the corresponding value must be multiplied

by the cell constant. The indicated values apply for c = 1/cm.

Display interval of the measurement = 1 s

pH Meter/Conductometer

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8.2 Measured value memory

Memory size ￭ 10,000 measured values, non-volatile memory

￭ 10 sensor entries in sensor list

8.3 TFT display

Resolution 320 x 240 pixels (RGB)

Display colors 16.7 millions

Display size 3.5 inches (70.08 x 52.56 mm)

8.4 Interfaces

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USB connector

Type A/B mini USB connector (USB 2.0) with the following functions:

￭ Power supply ￭ Data transmission

with USB cable (6.2151.110)

￭ Printing

with USB Y cable (6.2151.140)

8.5 Power supply

Lithium polymer battery

Power supply unit No. 6.2166.100

Nominal input voltage

Frequency 50 - 60 Hz

Output voltage 5 V DC

Nominal output current

Car charger adapter

Nominal input voltage

Output voltage 5 V DC

Nominal output current

3.7 V, 3,000 mAh The battery cannot be replaced by the user.

100 - 240 V AC

1,500 mA max.

No. 6.2166.500 (optional accessories)

12 V DC

1,000 mA

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pH Meter/Conductometer

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USB connector

Nominal input voltage

Power consumption

Power consumption at PCUSB

4.75 - 5.25 V DC

850 mA max.

500 mA

8.6 Charging time

8 Technical specifications

Charging time with power supply unit

Charging time on USB interface

Charging time with USB Y cable

9 hours with original power supply unit (no. 6.2166.100) and original USB cable

15 hours

8.7 Runtime with battery

NOTE

Runtimes

The runtimes may vary according to the configuration used and the usage habits.

The following values are based on operation under reference conditions

(see Chapter 8.12, page 83).

Uptime

pH Meter/Conductometer

8 hours

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8.8 Housing specification

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Protection class IP

Dust-resistant and protected against temporary immersion in water

67 / DIN EN 60529

8.9 Safety specification

This instrument fulfills the following electrical safety requirements:

CE marking in accordance with the EU directives:

￭ 2006/95/EC (Low Voltage Directive, LVD) ￭ 2004/108/EC (EMC Directive, EMC)

Design and testing According to EN/IEC/UL 61010-1, CSA-C22.2 No. 61010-1, protection

class III, EN/IEC 60529, degree of protection IP67.

Safety instructions This document contains safety instructions which have to be followed

by the user in order to ensure safe operation of the instrument.

8.10 Electromagnetic compatibility (EMC)

Emission

Standards fulfilled:

￭ EN/IEC 61326-1 ￭ EN/IEC 61000-6-3 ￭ EN 55011 / CISPR 11

Immunity Standards fulfilled:

￭ EN/IEC 61326-1 ￭ EN/IEC 61000-6-1 ￭ EN/IEC 61000-4-2 ￭ EN/IEC 61000-4-3 ￭ EN/IEC 61000-4-4 ￭ EN/IEC 61000-4-5 ￭ EN/IEC 61000-4-6 ￭ EN/IEC 61000-4-11 ￭ EN/IEC 61000-4-14 ￭ EN/IEC 61000-4-28

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pH Meter/Conductometer

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8.11 Ambient temperature

Operation –10 °C - +40 °C (at a max. of 85% humidity)

Storage –10 °C - +40 °C (at a max. of 85% humidity)

Transport –10 °C - +45 °C

8.12 Reference conditions

8 Technical specifications

Ambient temperature

Relative humidity ≤ 60%

Instrument status > 5 min in operation

Validity of the data

+25 °C (±3 °C)

After adjustment

8.13 Dimensions/material

Dimensions

Length 208 mm

Width 92 mm

Height 34 mm

Weight 400 g (net incl. battery)

Material

Housing Acrylonitrile butadiene styrene (ABS)

Keyboard foil Polyester (PES)

Display cover Polycarbonate (PC)

Interface cover Thermoplastic elastomers (TPE-E)

pH Meter/Conductometer

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9 Warranty (guarantee)

Metrohm guarantees that the deliveries and services it provides are free of defects in materials, design or manufacturing.

The general warranty period is 36 months (exclusions below) from the date of delivery, or 18 months in the event of continuous operation. The warranty remains valid on the condition that the servicing is provided by a service organization authorized by Metrohm at defined intervals and with a defined scope.

The warranty period for anion suppressors of the type "MSM" is 120 months from the date of delivery or 60 months in the case of continuous operation.

The warranty period for IC separation columns is 90 days after start-up.

For third-party components that are recognizable as such, the manufacturer's warranty regulations apply.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

For instruments sold under the Metrohm NIRSystems brand, a full 16month warranty is applicable. In the event of continuous operation, the warranty period is reduced by half.

Consumables and materials with limited storage life and glass breakage in the case of electrodes or other glass parts are excluded from the warranty.

Warranty claims cannot be asserted if the ordering party has failed to meet its payment obligations according to schedule.

During the warranty period, Metrohm undertakes either to replace free of charge or to credit the purchaser for any modules or components that can be shown to be faulty. Any transport or customs fees that may apply are the responsibility of the ordering party.

The precondition for this is that the ordering party has to specify the article number, the article designation, an adequate error description, the delivery date and (if applicable) the serial number or chip data in the Support Tracker. Metrohm then decides whether a replacement or a credit note is to be issued or whether the faulty part has to be returned using the Return Material Authorization (RMA). If a replacement or credit note is issued, the ordering party undertakes to store the faulty part for at least 24 months in accordance with the current storage directives (in compliance with ESD guidelines) and to hold it in readiness for onsite inspection or for return shipment to Metrohm. Metrohm reserves the right to invoice the ordering party for these articles, including retroactively, in the event of noncompliance with these preconditions.

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pH Meter/Conductometer

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9 Warranty (guarantee)

The same warranty periods that are specified for a corresponding new part apply to parts that are replaced or repaired within the above-mentioned warranty periods. However, replacement or repair of a part does not extend the warranty period of the entire system.

Deficiencies arising from circumstances that are not the responsibility of Metrohm, such as improper storage or improper use, etc., are expressly excluded from the warranty.

Metrohm also offers a 120-month spare parts availability guarantee and a 60-month PC software support warranty, calculated from the date on which the product is withdrawn from the market. The content of this warranty is the ability of the customer to obtain functioning spare parts or appropriate software support at market prices during the time of the warranty period. This does not apply for software products sold under the Metrohm NIRSystems brand.

If Metrohm AG is unable to meet this obligation due to circumstances beyond the control of Metrohm AG, then the ordering party shall be offered alternative solutions at preferential conditions.

pH Meter/Conductometer

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10 Accessories

Up-to-date information on the scope of delivery and optional accessories for your instrument can be found on the Internet.

When you receive your new instrument, we recommend downloading the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes.

Instruments currently sold

If you do not know the article number of your instrument, proceed as follows:

Downloading the accessories list

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NOTE

Go to the Metrohm website http://www.metrohm.com/com.

Click on .

The Search webpage will be displayed.

Enter a search term relating to the instrument into the search field

and click on Find.

The search results will be displayed.

In the search results, select the Devices tab (if it is not already

selected) and then click on the Metrohm article number of the required instrument (e.g. 2.852.0050).

The page with information pertaining to the searched article is displayed.

Select the Parts tab.

The complete list of accessories with the scope of delivery and the optional accessories will be displayed.

Click on .

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

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10 Accessories

The Partslists webpage will be displayed.

Select the desired output language.

With the article number entered, click on the command Generate

PDF.

The PDF file with the accessories data will be created in the language selected.

Direct access for all instruments

If you are unable to find your instrument using the search as described above, this may be due to the instrument not being sold anymore. Using the article number, you can download accessories lists for all instruments as follows:

Downloading the accessories list

Type http://partslists.metrohm.com into your Internet browser.

The Partslists webpage will be displayed.

Select the desired output language.

Enter the article number and click on the Generate PDF command.

The PDF file with the accessories data will be created in the language selected.

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

Glossary

Display field

Editing dialog

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Display fields are menu lines with a designation and a displayed value.

In editing dialogs, you can enter or edit values (see "Editing dialog", page

22).

The abbreviation IS in instruments and menus stands for Intelligent Sensor from the iTrode line of sensors.

A chip in the sensor head saves the data, which is automatically transmitted when the sensor is connected with the instrument by means of the 854 iConnect. The measured data is transmitted digitally.

Main dialog

Menu dialog

Menu line

Menu structure

Selection dialog

In the main dialog, measured values are displayed and you can trigger primary operations for measurements (see "Main dialog", page 22).

Menu dialogs show an open menu structure with the corresponding menu lines (see "Menu dialog", page 22).

Menu lines are positions in the menu dialog that can be selected or that display something.

The menu structure represents the navigation in the instrument through the menus (see Chapter 4.6, page 33).

In selection dialogs, you can select one option from a range of options (see "Selection dialog", page 23).

￭￭￭￭￭￭￭￭

pH Meter/Conductometer

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

Index

Battery ..................................... 12

Brightness ................................ 49

Calibration .......................... 50, 53

Calibration param. .............. 38, 39

Change password ..................... 49

Conductivity ................... 1, 39, 53

Conductometer .......................... 8

Configuration ........................... 48

Connector .................................. 8

Control keys ............................. 25

CSV file .................................... 57

Date ......................................... 48

Display ..................................... 21

Editing dialog ............... 22, 30

Main dialog ............ 22, 26, 27

Menu dialog ................. 22, 29

Selection dialog ............ 23, 32

Status ................................. 24

Guarantee ................................ 84

Initial configuration .................. 16

Date/time ........................... 17

Language ........................... 16

Installation qualification ............ 60

Instrument

Switch off ........................... 21

Switch on ..................... 13, 21

Interface ..................................... 3

Language ................................. 49

Mains voltage ............................. 5

Maintenance agreement .......... 60

Measured values ...................... 40

Measuring parameters ........ 38, 39

Metrohm Service ...................... 59

Model version ............................ 2

New sensor .............................. 45

Operational qualification .......... 60

Overview of the instrument ........ 7

PC/LIMS report ......................... 57

pH value ................................... 38

pH/Conductometer

Analog ................................. 9

Digital .................................. 9

Potential value .......................... 38

Power supply ........................ 2, 12

Printer ...................................... 47

Printing .................................... 56

Problems .................................. 61

Quality management ................ 60

Report ................................ 47, 56

Resistance value ....................... 39

Safety instructions ...................... 4

Sales version ............................... 2

Salinity ..................................... 39

Sensor ........................................ 3

Sensor list ................................. 43

Sensors .................................... 42

Service ....................................... 5

Switch off ................................. 21

Switch on ................................. 21

Temperature ............................. 38

Time ......................................... 48

Total Dissolved Solids ............... 39

Update ..................................... 19

User ......................................... 49

Warranty .................................. 84

pH Meter/Conductometer

￭￭￭￭￭￭￭￭

Metrohm 914pHr User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of contents

Table of figures

1.1 Instrument description

1 Introduction

1.1.1 Model and sales versions

1.1.2 Power supply

1.1.3 Interfaces

1.1.4 Sensors

1.2 Intended use

1.3 About the documentation

1.3.1 Symbols and conventions

1.4 Safety instructions

1.4.1 General notes on safety

1.4.2 Electrical safety

1.4.3 Flammable solvents and chemicals

1.4.4 Recycling and disposal

2 Overview of the instrument

2.1 Instrument connectors

2.1.1 912 Conductometer

2.1.2 913 pH Meter

2.1.3 914 pH/Conductometer IS

2.1.4 914 pH/Conductometer

2.2 Application environment

2.2.1 Laboratory use

2.2.2 Mobile application

3.1 Unpacking and inspecting the instrument

3 Installation

3.1.1 Packaging

3.1.2 Checks

3.1.3 Scope of application

3.2 Power supply

3.2.1 Charging the battery

3.2.2 Operation with power supply unit

3.2.3 Operation via USB connector (PC)

3.3 Connecting sensors

3.4 Connecting a printer

3.5 Initial configuration

3.5.1 Setting the Language

3.5.2 Setting the date and time

3.6 Installing updates

4.1 Switching the instrument on and off

4 Operation

4.2 Displays

4.3 Status displays

4.3.1 Battery status

4.3.2 User rights

4.3.3 Sensor quality for pH electrodes

4.4 Control keys

4.5 Basic operation

4.5.1 Main dialog with two measuring channels

4.5.2 Main dialog with one measuring channel

4.5.3 Operation in the main dialog

4.5.4 Menu dialog

4.5.5 Editing dialog

4.5.6 Selection dialog

4.6 Menu structures

4.6.1 912 Conductometer

4.6.2 913 pH Meter

4.6.3 914 pH/Conductometer IS

4.6.4 914 pH/Conductometer

4.7 Menu dialogs

4.7.1 Parameters pH/U/T and Parameters pH/U/T IS

4.7.2 Parameters Κ/TDS/Sal/ρ/T

4.7.3 Measured values

4.7.4 Sensors

4.7.5 Report

4.7.6 Configuration

4.7.7 User

4.8 pH measurement

4.8.1 pH electrode calibration

4.8.2 Measurement

4.9 Conductivity measurement

4.9.1 Determination of the cell constant (calibration)

4.9.2 Measurement

4.10 Outputting reports/measured values

4.10.1 Printing out