Metrohm 789 User Manual

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CH-9101 Herisau/Switzerland E-Mail www.metrohm.com

info@metrohm.ch

789 Robotic Sample Processor XL

778 Sample Processor

Program version 5.789.0020+

and 5.778.0020+

Instructions for Use

8.789.1063 03.2007 / dm

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Teachware Metrohm AG Oberdorfstr. 68 CH-9100 Herisau

Although all the information given in these instructions has been checked with great care, errors cannot be entirely excluded. Should you notice any mistakes please inform the author at the address given above.

II Metrohm Sample Processor

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Table of Contents

1 Introduction 1

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

1.1.1 Field of application of the Metrohm Sample Processors........................1

1.1.2 Instrument versions..................................................................................3

1.2 Sample Processors as part of a system ........................................5

1.3 Information about these Instructions for Use................................6

1.3.1 Please note ..............................................................................................6

1.3.2 Additional documents..............................................................................6

1.3.3 Notation and pictograms.........................................................................6

1.4 Parts and controls ...........................................................................7

1.4.1 Overall view..............................................................................................7

1.4.2 Rear view..................................................................................................8

1.5 Connections.....................................................................................9

1.5.1 Sensors of the Sample Processor...........................................................9

1.6 Accessories .................................................................................. 11

1.7 The keypad.................................................................................... 13

1.7.1 The display.............................................................................................14

1.7.2 The keys.................................................................................................15

1.8 Safety information ........................................................................ 23

1.8.1 General: .................................................................................................23

1.8.2 Electrical safety ......................................................................................23

1.8.3 Personal protection................................................................................24

2 Installation 25

2.1 Installation flow chart................................................................... 25

2.2 Instrument setup........................................................................... 26

2.2.1 Setup......................................................................................................26

2.2.2 Mains connection...................................................................................26

2.2.3 Connecting the keypad .........................................................................27

2.2.4 Mounting a 786 Swing Head .................................................................27

2.2.5 Mounting the robotic arm ......................................................................28

2.2.6 Connecting pumps ................................................................................29

2.2.7 Connecting dosing devices and stirrers................................................30

2.3 Data transmission connections ................................................... 31

2.3.1 Remote connections..............................................................................31

2.3.2 Serial connections (RS232) ...................................................................37

2.3.3 Connecting a printer ..............................................................................38

2.4 Connecting up accessories ......................................................... 40

Metrohm Sample Processor III

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2.4.1 Connecting rinsing and aspiration equipment......................................40

2.4.2 Attaching the tubing ..............................................................................41

2.4.3 Installing the titration accessories .........................................................42

2.4.4 Assembling pipetting accessories ........................................................44

2.4.5 Installing a double-hollow needle..........................................................45

2.4.6 Spray nozzles ........................................................................................45

2.4.7 Magnetic stirrer......................................................................................46

2.4.8 Mounting the stand support ..................................................................46

2.4.9 Installing the collection trough...............................................................47

2.4.10 Sample racks.........................................................................................47

2.4.11 Mounting the safety shield ....................................................................48

2.5 Start-up.......................................................................................... 49

3 Operation 51

3.1 Operating principles..................................................................... 51

3.1.1 Display ...................................................................................................51

3.1.2 Instrument dialog...................................................................................52

3.1.3 Data input ..............................................................................................54

3.1.4 Text input ...............................................................................................55

3.2 Configuration ................................................................................ 57

3.2.1 Miscellaneous........................................................................................57

3.2.2 Tower settings .......................................................................................59

3.2.3 Rack definitions .....................................................................................61

3.2.4 Dosing units...........................................................................................64

3.2.5 RS232 settings.......................................................................................65

3.3 Composition of a method............................................................. 66

3.3.1 Run sequences and method parameters .............................................66

3.3.2 Sample Processor settings ...................................................................68

3.3.3 Stirrer settings........................................................................................69

3.3.4 Dosing device settings ..........................................................................70

3.3.5 Behavior during timeout ........................................................................71

3.3.6 Manual stop settings .............................................................................72

3.4 Commands.................................................................................... 74

3.4.1 Sample Processor commands..............................................................74

3.4.2 Switching components..........................................................................77

3.4.3 Dosing device control............................................................................78

3.4.4 Communication commands..................................................................80

3.4.5 Auxiliary commands ..............................................................................84

3.5 Managing methods....................................................................... 87

3.5.1 User-defined methods...........................................................................87

3.5.2 POWERUP method................................................................................88

3.6 Run control ................................................................................... 89

3.7 Sample racks ................................................................................ 90

IV Metrohm Sample Processor

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3.7.1 Metrohm standard sample racks ..........................................................90

3.7.2 Magnet codes........................................................................................91

3.7.3 Rack data...............................................................................................92

3.8 Dosing and liquid handling.......................................................... 95

3.8.1 Dosimats and Dosinos ..........................................................................95

3.8.2 Liquid handling functions ................................................................... 100

3.8.3 The DOS command............................................................................ 101

3.8.4 Pictograms.......................................................................................... 101

3.8.5 Liquid handling functions in detail...................................................... 102

3.8.6 Pipetting equipment............................................................................ 105

3.8.7 Pipetting procedure ............................................................................ 105

3.8.8 Preparing the Dosing unit................................................................... 106

3.8.9 Pipetting .............................................................................................. 106

3.9 The Remote interface ................................................................. 109

3.9.1 Output lines......................................................................................... 109

3.9.2 Input lines............................................................................................ 109

3.9.3 SCN command ................................................................................... 110

3.9.4 CTL command .................................................................................... 110

3.9.5 Manual stop options ........................................................................... 111

3.10 LEARN mode............................................................................... 112

3.10.1 Setting lift and robotic arm positions.................................................. 112

3.10.2 Rack adjustment................................................................................. 113

3.10.3 Parametrizing sequence commands ................................................. 113

3.11 TRACE function .......................................................................... 114

3.12 Disabling keypad functions ....................................................... 114

3.12.1 Disable whole keypad......................................................................... 114

3.12.2 Disable configuration.......................................................................... 115

3.12.3 Disable parameter .............................................................................. 115

3.12.4 Disable method storage functions ..................................................... 115

3.12.5 Disable display.................................................................................... 115

3.13 786 Swing Head settings ........................................................... 116

4 Service, maintenance, errors 119

4.1 Service......................................................................................... 119

4.1.1 Running time meter............................................................................. 119

4.2 Care and maintenance ............................................................... 119

4.3 Error messages .......................................................................... 120

5 GLP validation – diagnosis 122

5.1 Validation / GLP .......................................................................... 122

5.2 Initializing the working memory ................................................ 123

Metrohm Sample Processor V

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6 Annex 125

6.1 Technical data............................................................................. 125

6.1.1 Keypad.................................................................................................125

6.1.2 Interfaces ............................................................................................. 125

6.1.3 MSB connections ................................................................................125

6.1.4 Pumps and pump connections...........................................................125

6.1.5 Swing Head connection ......................................................................126

6.1.6 Lift ........................................................................................................126

6.1.7 Turntable..............................................................................................126

6.1.8 Stirrer connection (DIN socket) ...........................................................126

6.1.9 Mains connection ................................................................................126

6.1.10 Safety specifications............................................................................126

6.1.11 Electromagnetic compatibility (EMC)..................................................126

6.1.12 Ambient temperature...........................................................................127

6.1.13 Dimensions and materials...................................................................127

6.2 Standard methods ...................................................................... 128

6.2.1 Titrino ...................................................................................................129

6.2.2 PIP ext ..................................................................................................130

6.2.3 KF_ext. .................................................................................................132

6.2.4 pH_cal..................................................................................................134

6.2.5 Std_add ...............................................................................................135

6.3 Standard equipment ................................................................... 137

6.3.1 Metrohm Sample Processor:...............................................................137

6.3.2 Sample racks and sample beakers ....................................................149

6.3.3 786 Swing Head ..................................................................................153

6.3.4 Connection cables...............................................................................157

6.3.5 Optional accessories and additional devices .....................................158

6.3.6 Electrodes for automation ...................................................................161

6.4 Warranty and conformity.......................................................... 1621

6.4.1 Warranty.............................................................................................1621

6.4.2 Declaration of Conformity (778 Sample Processor) .........................1632

6.4.3 Declaration of Conformity (789 Robotic Sample Processor XL) ......1643

6.4.4 Quality Management Principles ........................................................1654

7 Index 1665

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List of Illustrations

Fig. 1 System components ........................................................................................................5

Fig. 2 Overall view......................................................................................................................7

Fig. 3 Rear view .........................................................................................................................8

Fig. 4 Connection strip...............................................................................................................9

Fig. 5 Magnet sensor for rack code...........................................................................................9

Fig. 6 Beaker sensor on the tower ...........................................................................................10

Fig. 7 Sensor on a robotic arm ................................................................................................10

Fig. 8 Accessories ...................................................................................................................11

Fig. 9 Keypad...........................................................................................................................13

Fig. 10 Safety Shield (example shown: 6.2751.0xx for transfer robotic arm) ...........................24

Fig. 11 Mounting the Swing Head .............................................................................................27

Fig. 12 Robotic arm with limiting screw .....................................................................................28

Fig. 13 Mounting the robotic arm ..............................................................................................29

Fig. 13 MSB connections...........................................................................................................30

Fig. 14 Remote cable.................................................................................................................31

Fig. 15 RS232 connections........................................................................................................37

Fig. 16 Distributor piece.............................................................................................................40

Fig. 17 Attaching the tubing.......................................................................................................41

Fig. 18 Macro titration head.......................................................................................................42

Fig. 19 Micro titration head ........................................................................................................42

Fig. 20 Robotic arm with titration accessories ...........................................................................43

Fig. 22 Transfer robotic arm with pipetting accessories............................................................44

Fig. 23 Transfe r robotic arm with double-hollow needle...........................................................45

Fig. 24 Spray nozzles.................................................................................................................45

Fig. 25 741 Magnetic stirrer .......................................................................................................46

Fig. 24 Stand support ................................................................................................................46

Fig. 25 Collection trough............................................................................................................47

Fig. 26 Attaching a sample rack ................................................................................................47

Fig. 27 Sample rack for XL models............................................................................................48

Fig. 28 Mounting the safety shield.............................................................................................48

Fig. 29 Safety shield for Swing Heads.......................................................................................48

Fig. 30 Dialog arrangement .......................................................................................................53

Fig. 31 Text input .......................................................................................................................56

Fig. 32 800 Dosino with Dosing units ........................................................................................95

Fig. 33 Dosing unit from below..................................................................................................96

Fig. 34 Dosing unit - ports .......................................................................................................100

Fig. 35 Remote interface..........................................................................................................125

Tables

Table 1 Model versions (1 tower) .................................................................................................3

Table 2 Model versions (2 towers)................................................................................................4

Metrohm Sample Processor VII

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VIII Metrohm Sample Processor

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1.1 Instrument description

1 Introduction

This section offers you a first overview of the Metrohm Sample Processors. All the information applies to both the 789 Robotic Sample Processor XL and the 778 Sample Processor. You are informed about how you can use these versatile instruments and are introduced to the most important parts and controls.

1.1 Instrument description

1.1.1 Field of application of the Metrohm Sample Processors

The Metrohm Sample Processors are very versatile instruments intended exclusively for use in factories and laboratories, where they cover a wide range of applications. In this way they provide an indispensable service wherever large series of samples have to be processed, no matter whether in the titration, measurement or liquid handling sectors.

As a result of the extensive communication possibilities you can work via the parallel Remote and serial RS232 interface not just with the wide range of Metrohm titrators, measuring instruments and dosing devices, but you can also work with any other instruments that have a suitable communications interface; these can be controlled by or control the Sample Processor. These abilities mean that they are predestined for all imaginable automation tasks in a modern laboratory, even within highly integrated laboratory data systems.

Despite their comprehensive range of commands and the numerous possible configurations, the Metrohm Sample Processors offer an uncomplicated type of operation that is also suitable for routine work as a result of the possibility of managing user-defined methods.

The standard methods supplied with the instruments can be used for routine tasks without any further fuss. After a short familiarization period the user can alter them to meet any particular requirements and store them in the instrument. This means that, apart from routine work, Metrohm Sample Processors can also be used for demanding special applications.

The run sequences for processing the individual samples are freely definable within wide limits. The same applies to the start sequence and

Metrohm Sample Processor, Introduction 1

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1.1 Instrument description

final sequence, which have to be carried out once before the start of a sample series or once after it has been completed. This offers many advantages, particularly for titrations. The electrode can be conditioned before the first titration or subjected to a special rinsing process.

A learn mode is available for creating run sequences and, with its help, command parameters can be set in manual operation.

Exchangeable standard sample racks are available for many sizes of beakers and test tubes. Freely selectable "special beaker" positions can be defined for each rack. These are then used for including rinsing or conditioning beakers, which can be addressed in any part sequence, on the rack.

By extending the system with a 786 Swing Head the number of samples to be processed on a rack can be considerably increased. The robotic arm of the 786 Swing Head allows any point on a sample rack to be addressed. This means that the number (max. 999 rack positions) and arrangement of the samples is virtually unlimited. On request we can supply customer-specific special racks for individual requirements.

Freely definable position tables can be loaded via the RS232 interface and suitable PC software for the configuration of special racks.

2 Metrohm Sample Processor, Introduction

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1.1 Instrument description

1.1.2 Instrument versions

Variously equipped Metrohm Sample Processors models are available:

• All versions of the 789 Robotic Sample Processor XL are suitable for sample racks of up to 48 cm diameter.

• All versions of the 778 Sample Processor are suitable for sample racks of up to 42 cm diameter.

Model 2.789.0010 Model 2.778.0010

1 tower with 1 pump + 1 ext. pump connection + 1 stirrer connection + 1 Swing Head connection

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

Model 2.789.0020 Model 2.778.0020

1 tower with 2 pumps + 1 stirrer connection + 1 Swing Head connection

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

Model 2.789.0030 Model 2.778.0030

1 tower without pumps + 2 ext. pump connections + 1 stirrer connection + 1 Swing Head connection

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

Table 1 Model versions (1 tower)

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1.1 Instrument description

Model 2.789.0110 Model 2.778.0110

2 towers with 2 pumps + 2 ext. pump connections + 2 stirrer connections + 2 Swing Head connections

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

Table 2 Model versions (2 towers)

Model 2.789.0120 Model 2.778.0120

2 towers with 4 pumps + 2 stirrer connections + 2 Swing Head connections

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

Model 2.789.0130 Model 2.778.0130

2 towers without pumps + 4 ext. pump connections + 2 stirrer connections + 2 Swing Head connections

Chassis with 3 MSB sockets for dosing devices and/or stirrers + Remote connection (25-pin) + RS232 connection (9-pin) + keyboard connection

4 Metrohm Sample Processor, Introduction

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1.2 Sample Processors as part of a system

741 Magnetic Stirrer

772 Pump Unit

Titrinos

781 pH/Ion Meter Metrohm781 pH/Ion Meter Metrohm

pH Meter / Ion Meter

756/831

756 KF

Coulometer

731

Relay Box

731 Relay Box

711 Liquino

786 Swing Head*

772 Pump

Remote

Keypad

COM 1

RS 232

786 Swing Head**

MSB

RS 232

801 Stirrer 804 Titation Stand

Printer

TiNet

2.x

USB

COMx

COM 2

LPT 1

COM 2

Personal Computer

• Titrinos

• pH Meter

• Coulometer

• other

Metrohm instruments

• other manu-

• Titrinos

• pH Meter

facturers instruments

• Coulometer

• other Metrohm instruments

• balance

• instruments from

other manufacturers

MSB

802 Rod Stirrer

823823

800

Dosino

800 Dosino 805 Dosimat

700

Dosino

700 Dosino 685 Dosimat

823 Membrane Pump Unit

805 Dosimat805 Dosimat

700

685 Dosimat

786 Swing Head

809 Titrando809 Titrando808 Titrando808 Titrando

• other Metrohm instruments

* with titration-robotic arm ** with transfer-robotic arm

Fig. 1 System components

Titrandos (6.2148.010 Remote Box required)

Metrohm Sample Processor, Introduction 5

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1.3 Information about these Instructions for Use

1.3.1 Please note

Please read through these Instructions for Use carefully before you start to use the Sample Processor. The instructions contain information and warnings that must be observed by the user in order to guarantee the safe use of the instrument.

1.3.2 Additional documents

• Quick Reference 8.789.1013 for the Metrohm Sample Processors

• Operating Tutorial 8.789.1023 for the Metrohm Sample Processors

• Technical Reference 8.789.1033 for the Metrohm Sample Proces-

sors

1.3.3 Notation and pictograms

The following notation and pictograms are used in these Instructions for Use:

Location Menu item, parameter or input value

<OK> button, key

Danger

This symbol indicates a possible risk of death or injury to the user if the instructions are not followed correctly.

Warning This symbol indicates a possible risk of damage to the instruments or their components if the instructions are not followed correctly.

Attention This symbol indicates important information. Read the information provided before you continue.

Remarks This symbol indicates additional information and tips.

6 Metrohm Sample Processor, Introduction

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1.4 Parts and controls

1.4.1 Overall view

Safety information

Safety shield 2 must always be in position before the Metrohm Sample Processor is used.

Fig. 2 Overall view

Guide chain

Safety shield/Splash protection

Sample rack

Stirrer rail

Splash protection fixing

Metrohm Sample Processor, Introduction 7

6 7 8 9 10 11

Splash protection guide Titration head Lift Tower Beaker sensor Chassis

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1.4 Parts and controls

1.4.2 Rear view

This illustration shows the rear view of the standard model 2.778.0010 with one tower, one membrane pump and one connection for an external pump.

Pump 1

Distributor block

Membrane pump

PTFE tubing

Solenoid valve

Warning: Biohazard

See Section

Swing

Made by Metrohm Herisau Switzerland

Keyboard

MSB1

MSB2

Power

Fig. 3 Rear view

1.8.3 Personal protection

Head

Remote

RS 232

MSB3

17 18 19

Ext.

Pump 2

S: 115 VA

U: 100 - 240 V f: 50 - 60 Hz

Stirrer connection (Tower 1)

For 802 Rod Stirrer or 741 Magnetic Stirrer

Connection strip Pump connection M8 (external) Connection socket for the

786 Swing Head Warning: Resistance to chemicals

See section

2.4.1 Connecting rinsing

and aspiration equipment

8 Metrohm Sample Processor, Introduction

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1.5 Connections

The electrical connections are the same for all models of the Metrohm 778/789 Sample Processor series.

Keyboard

MSB1

MSB2

Power

Made by M etrohm Heris au Switzerland

Mains switch

Keyboard connection

MSB connections MSB1 … MSB3

Metrohm Serial Bus Connection of dosing devices and stirrers

Remote connection (25-pin)

23 24

Remote

MSB3

RS 232

Fig. 4 Connection strip

24 25 26

S: 115 VA U : 100 - 240 V f: 50 - 60 Hz

Serial RS232 connection (9-pin) Mains connection Type plate

1.5.1 Sensors of the Sample Processor

Magnet holder

Magnet

sensor

Fig. 5 Magnet sensor for rack code

Rack sensor

The magnet sensor for recognizing the individual rack code is located beneath the turntable of the Sample Processor. The magnet code of a rack can only be read in when the rack is in the initial position. The magnet holder must be positioned directly above the sensor.

For this reason the Sample Processor should be initialized each time that a rack is changed with the <RACK> key.

Metrohm Sample Processor, Introduction 9

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1.5 Connections

Optical beaker sensor

Each tower of a Metrohm Sample

Splash protection

Safety shield

Beaker sensor

Sample rac

Fig. 6 Beaker sensor on the

tower

Processor is equipped with a beaker sensor that detects the presence of a beaker in front of the tower. With this infrared sensor beakers made from different materials can be detected, provided that they are located in the correct position in front of the tower and the beaker sensor 'Tower' has been selected in the rack definition. This "Beaker test" is carried out after each MOVE command (i.e. each rotation of the rack). The beaker sensor on the tower can only be used with single-row sample racks.

Tactile robotic arm sensor

Robotic arms with piezo sensors may be used with multi-row racks. The sensor is activated, when the lift is run to work position and makes physical contact with a sample beaker.

Piezo sensor

Fig. 7 Sensor on a robotic arm

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1.6 Accessories

Robotic arm with

titration head

786 Swing Heads

Stand support

Sample rac

Robotic arm for sample transfer

Fig. 8 Accessories

With suitable accessories a Sample Processor can be extended to form a comprehensive automated system. Depending on the tasks to be carried out, various standard components or even custom-made special parts can be used. Please consult the list of accessories on page 137ff.

Sample racks

Custom-made racks for various vessel sizes with any arrangement of rack positions can also be supplied in addition to the standard racks.

786 Swing Head with robotic arm

The use of multi-row sample racks or external titration cells requires the use of a 786 Swing Head. This motor drive, which is mounted on the lift of one of the Sample Processor towers, can move different types of robotic arm. Various types of standard robotic arms with accessories for titrating on the sample rack or for sample transfer to an external titration cell are available.

Stand support

If an external titration cell is to be used then we recommend the use of a stand support. The stand support can accommodate a magnetic stirrer (e.g. model 801) and, with a support rod, enables you to attach a titration cell or other accessories.

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1.6 Accessories

Swing head with tactile piezo sensor

When using a multi-row rack and a 786 Swing Head, a robotic arm with a touch-sensitive piezo sensor may be used. With that kind of sensor the presence of a sample beaker can be detected reliably.

Robotic arm for removing covers

Whenever covered sample containers are required (e. g. with volatile samples) the lids can be removed by a special robotic arm (so called Dis-Cover) with magnetic contact before the sample treatment. Special lids are available for this purpose.

Accessory set for sample transfer

For pipetting samples into external titration cells an accessory set (6.5619.000) is available, comprising all necessary parts.

12 Metrohm Sample Processor, Introduction

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1.7 The keypad

Controller

******** PUMP---- STIR----

TOW ER 1 TOW ER 2 LEAR N

CONFIG PARAM

HOME END

TOWER

counter

USER

METHOD

RESET

1/12

ready

SAMPLE MOVE LIFT

PUMP STI R DO S

SCAN CTRL WA IT

Met r ohm

INSERT

DELETE

6.2142.040

SELECT

QUIT ENTER

CLEAR

DEF

LEARN

HOLD

PRI NT

STOP

RACK

START

Fig. 9 Keypad

Below the 2-line display there are three LEDs. The two LEDs 'TOWER 1' and 'TOWER 2' indicate the tower that is currently active. The LED 'LEARN' lights up when the learn mode is activated.

Most keys have two functions, depending on whether the Sample Processor is in the normal operating mode or in the editing mode.

Selection menus can be accessed with the upper row of keys (<CON- FIG>, <PARAM>, <USER METHOD>). The other keys on the left-

Metrohm Sample Processor, Introduction 13

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1.7 The keypad

hand side of the keypad are used for navigation in the menus or for altering parameters. For entering parameters the numerical block on the right-hand side of the keypad is also available.

The lowest row of keys (<HOLD>, <STOP>, <START>) are used for the direct control of a method sequence.

1.7.1 The display

The display consists of two lines each with 24 characters.

The first line is used as the title line, in which the current method and the sample counter count are shown. In the editing mode the menu title appears here.

The second line is used as the status line, which shows specific activities depending on the operating status. In the editing mode it is used as the input line.

Normal condition

Method name 

Pump status 

Sample counter 

******** counter 1/12

PUMP--++STIR+---- ready

 Stirrer status

Method sequence

Running sequence 

******** counter 2/12 START 03 WAIT 11 s

 Current command with line number

Editing mode

Menu line or command 

 Menu title

>Sample sequence 1 MOVE 1 : Sample

 1

parameter

If the Sample Processor is included in a computer-controlled automation system and is completely controlled via the RS232 interface then it may be advisable to switch off the display. This can be done in the setup menu of the Sample Processor, see p.

 Instrument status

 Parameter

 2

parameter

114.

14 Metrohm Sample Processor, Introduction

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1.7 The keypad

1.7.2 The keys

The menu keys

The <Config> key opens the selection menu for the configuration of

CONFIG

the Sample Processor.

The <PARAM> key opens the selection menu for editing the run se-

PARAM

quences and method parameters.

The <User Method> key opens the selection menu for opening, sav-

USER METHOD

ing and deleting default or user-defined methods.

Lift operation and sample positioning keys

With the <> and <> keys the lift of the currently active tower can be moved up and down respectively. The lowest possible lift position is defined by the configuration parameter 'max. stroke path'.

 In the editing mode the arrow keys <> and <> are used

for navigation in the particular menu or submenu.

HOME

TOWER

SELECT

END

With the <HOME> key the lift of the currently active tower is returned to the rest position (0 mm), i.e. to the uppermost stop. <END> moves the lift to the predefined working position (see p.

 In the editing mode the <HOME> and <END> keys move to

the first and last line of the menu or submenu respectively.

With the < NEXT> and < PREV> keys the sample rack can be rotated forward or backward by one position. The beaker positions depend on the active lift. If necessary, the lift (or both lifts) are automatically raised to the shifting position. When the rack position has been reached a robotic arm which may be mounted will automatically be directed to the corresponding rack position.

 In the editing mode the arrow keys <> and <> are

used for navigation in a menu line.

Most functions for manual operation apply specifically to a single tower. With the 2-tower models the <SELECT/TOWER> key can be used to switch between the towers. The currently active tower is indicated by the TOWER 1 or TOWER 2 LED. The following commands or keys refer to the active tower: MOVE, <>, <> , LIFT, <>,

<>, <HOME>, <END> and <PUMP>.

 During data input the <SELECT> key is used to select a pre-

defined entry from a selection list.

61).

Metrohm Sample Processor, Introduction 15

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1.7 The keypad

Editing and sequence control

When editing a method sequence the <INSERT> and <DELETE>

INSERT DELETE

keys are used to insert or delete a command line.

RESET

CLEAR

QUIT

ENTE R

Command keys

SAMPLE

MOVE

The <CLEAR/RESET> key is used to initialize the Sample Processor and dosing devices. This corresponds to the switching-on process.

 During data input the <CLEAR/RESET> key is used to de-

lete an entry or to reset the default value. In text entry mode the last character is deleted.

During a method sequence the <QUIT> key can be used to terminate the command which is currently being carried out. The following command is executed.

 During data input the <QUIT> key is used to terminate an en-

try. During navigation in a menu the <QUIT> key is used to exit the active (sub)menu and select the next highest menu level.

During data input the <ENTER> key is used to accept the entry.

The <SAMPLE> key is used to set the current sample position. This has to be done before a sample series is run.

At the start of a method this position is assumed to be the first sample in a series. If no sample position has been set then the Sample Processor will select rack position 1.

With <MOVE> a vessel or a particular rack position can be moved to the active tower or a robotic arm can be swung to an external position. The <SELECT> key is used to select the tower. As well as the actual sample beaker a maximum of 16 possible special beakers can also be defined. A particular rack position can be moved to directly by entering the position number (with the numerical keys). The direction and speed of rotation can be altered in the parameter menu or with the <DEF> key.

Important:

For safety reasons it is only possible to rotate the sample rack when the lift or both lifts are located in the shifting position or above it. During a rack rotation the lift (or both lifts) are automatically first raised to the predefined shift height.

16 Metrohm Sample Processor, Introduction

Page 25

1.7 The keypad

LIFT

Raises or lowers the lift of the active tower. The predefined lift positions (working position, rest position, rinsing position, shifting position,

special position) can be selected with the <SELECT> key. They can be entered and saved separately for each rack in the configuration menu. As well as the predefined lift positions it is also possible to enter absolute lift positions in mm via the numerical keys. In the 2-tower models the tower can be selected with <SE- LECT/TOWER>.

PUMP

The <PUMP> key is used for switching the pumps 1 or 2 of the active tower on and off. By entering the pump number (1 or 2) the condi-

tion of the corresponding pump will be switched, i.e. if the pump is switched off it will be switched on and vice versa. With Sample Processor models that have no pump or only one built-in membrane pump the selected pump connection will be switched on or off.

The status of all pumps is shown in the display (e.g.

PUMP–+–+; +

means switched on, - means switched off).

Example:

PUMP on/off No. ? <2> Display: PUMP -+-- PUMP on/off No. ? <2> Display: PUMP ----

In this case pump 2 is switched on and off. Under <PARAM>,

>manual stop you can define whether the pumps

should be switched off with the <STOP> key or not.

STIR

The <STIR> key is used for controlling the stirrers. A stirrer can be switched on permanently or switched on for a given period and then

switched off again. The <SELECT> key is used to select both the stirrer and the function. The current status of the stirrer is shown directly in the display.

Example:

STIR: T1 : ON s Display: STIR +- (+=on -=off) STIR: MSB2 : 10 s Display: STIR 10 s

In this case in the first line the stirrer at tower 1 is switched on. The stirrer is selected with the <SELECT> key. As can be seen in the sec- ond line, the duration of the stirring process can also be entered. The stirring rate can be set for each stirrer in the parameter menu or with the <DEF> key. Under <PARAM>,

>manual stop you can define which stirrers can

be switched off with the <STOP> key.

DOS

The <DOS> key is used to control the connected dosing devices. Both positive and negative volumes can be dosed. Negative volumes

are used for aspirating liquids, e.g. during pipetting. As well as entering the volume to be dosed (with the numerical keys),

Metrohm Sample Processor, Introduction 17

Page 26

1.7 The keypad

<SELECT> can also be used to select additional functions:

- Filling the dosing or exchange unit (fill)

- Initializing the escange of a Dosing unit (release)

- Preparing the tubing systems and cylinder (prep.)

- Emptying the tubing system and the dosing cylinder (empty)

- Ejecting the cylinder contents (Eject)

- Driving the piston to the max. volume

- Compensating for the play between piston and spindle (compen.)

- Valve switching (port)

The first parameter of the DOS command stands for the number of the dosing instrument (1…3, * = all) and the Dosino port (e. g. 1.1 stands for Dosino 1, port 1), the second parameter for the function or the volume to be dosed.

Example:

DOS: 2.1 <ENTER> 4.51 ml <ENTER> DOS: 2.* <ENTER> <SELECT> ... fill <ENTER>

The dosing and filling rates can be set in the parameter menu or with the <DEF> key.

SCAN

Shows the incoming signals or data from the Remote or the serial RS232 interfaces.

This function is used for checking the data communication with connected devices. The first parameter shows the selected interface. The second parameter shows the signals or data that are received directly.

If the parallel Remote interface (Rm) is selected then the signal states of the incoming Remote lines are shown in binary form (1=line active, 0=line inactive).

If the serial RS232 interface (RS) is selected then the data string received via this interface will be shown (14 characters per line).

Example (Remote interface):

SCN:Rm :00000001

In this case the Ready line (Remote line input 0) of a connected Titrino is set.

CTRL

Controls external devices via the Remote or RS232 interface. The first parameter sets the interface (<SELECT>). The second pa-

rameter defines the status of the lines (Remote lines) or data (RS232 interface) to be outputted via the selected interface.

2nd parameter, for Remote interface

Binary pattern with 14 digits (0, 1 or ∗) for the 14 output lines or prede-

18 Metrohm Sample Processor, Introduction

Page 27

1.7 The keypad

WAIT

DEF

DEF settings

DEF

DOSRATE

fined binary pattern (<SELECT> selection), e.g.

INIT etc.

START device 1,

2nd parameter, for RS232 interface

Data string with up to 14 alphanumeric characters (any). The default value "&M;$G" (for starting Metrohm instruments) can be set with <CLEAR>.

The <WAIT> key has no function in the normal operating condition. It is used to insert the WAIT command in a run sequence.

The <DEF> key is used to edit various settings for manual operation. Repeated pressing of the <DEF> key is used to select the various settings. In order to change the entry you must first press <ENTER> and then enter the new value. Alterations made in this way only apply to manual operation.

Change dosing rate

• The dosing rate in mL/min can be set separately for each dosing device, see p.

• Syntax:

DOSRATE [dosing device] [dosing rate]

70.

COCKMOVE

DEF

FILLRATE

DEF

LIFTRATE

Change filling rate

• The filling rate in mL/min can be set separately for each dosing device, see p.

• Syntax:

FILLRATE [dosing device] [filling rate]

70.

Direction of stopcock rotation

• For each connected Dosino the direction of rotation of the stopcock switching can be defined separately, see p.

• Syntax:

COCKMOVE [Dosing device] [Direction of rotation]

70.

Change lift rate

• The lift speed in mm/s can be set separately for each tower (for 2tower models), see p.

• Syntax:

LIFTRATE [Tower] [Lift rate]

68.

Metrohm Sample Processor, Introduction 19

Page 28

1.7 The keypad

SHIFTRATE

SWINGRATE

STIRRATE

DEF

Change rack rate and direction of rotation

• As well as the speed of rotation of the sample rack in degrees/second the direction of rotation can also be defined.

• Direction of rotation "+" means that the rack always rotates coun- terclockwise, i.e. in increasing rack position sequence, Direction of rotation "–" means clockwise, i.e. decreasing sequence.

• Direction of rotation shortest possible path for a rack rotation, see p.

• Syntax:

SHIFTRATE [Direction of rotation] [Rotation rate]

auto: the Sample Processor itself selects the

68.

Change swing rate

• The swing rate in degrees/s of a robotic arm can be set separately for each connected 786 Swing Head, see p.

• Syntax:

SWINGRATE [Tower] [Swing rate]

68.

Change stirring rate

• The stirring speed can be controlled separately for each stirrer (rod or magnetic stirrer), see p.

• Syntax:

STIRRATE [Stirrer] [Stirrer rate]

69.

20 Metrohm Sample Processor, Introduction

Page 29

1.7 The keypad

Auxiliary commands

RACK

The <PRINT> key is used to print out a report. The following can be selected: parameter report (method), configuration report, list of stored methods, all reports.

The type of report can be selected with <SELECT>.

e. g.

Print: config

The selection of the printer type and the settings of the RS232 interface must be made in the configuration menu under

tings, see p. 37.

>RS232 Set-

With the <RACK> key the sample rack can be initialized. The connected peripheral devices (e.g. Dosimats, Dosinos) are not affected by this. The sample rack and lift (both lifts in 2-tower versions) are moved to the zero position and automatic rack recognition is carried out.

Metrohm Sample Processor, Introduction 21

Page 30

1.7 The keypad

Sequence control

The <START> key starts a method. A start is only possible when the

START

Sample Processor is in the normal operating condition, i.e. when the display shows

ready.

If <START> is activated after an interruption (<HOLD>, see below), then the sequence continues with the next command.

The <START> can also be used to carry out a single command line in a run sequence (TRACE function), see p.

114.

The <STOP> key ends a method.

STOP

If a sample series is stopped manually with <STOP> then the final sequence of a method will not be carried out. When the <STOP> key is pressed the functions listed in the parameter menu under

stop will be carried out.

>manual

LEARN

HOLD

The <HOLD> key interrupts a method sequence.

Connected peripheral devices (Titrinos, etc.) will not be stopped automatically. Only the method sequence will be interrupted. In the

HOLD condition a method can be completely terminated with <STOP> or continued with <START>.

After an error message in the method sequence the Sample Processor switches automatically to the HOLD condition after <QUIT>.

22 Metrohm Sample Processor, Introduction

Page 31

1.8 Safety information

Warning! This instrument should only be used in accordance with the information given in these Instructions for Use.

1.8.1 General:

This instrument left our works in perfect condition from the point of view of its operational safety (see Technical data, safety specifications). To keep it in this condition and to continue to operate safely the following information must be carefully observed.

1.8.2 Electrical safety

Please observe the following guidelines:

• Only qualified Metrohm personnel should carry out service work on electronic components.

• Do not open the instrument housing as this could damage the instrument. The housing contains no components which could be serviced or exchanged by the user.

Electrical safety when handling the instrument is guaranteed within the scope of Standard IEC 61010-1.

• Protection against electrostatic charges

Warning! Electronic components are sensitive to electrostatic charges and can be destroyed by a discharge. Before touching any electronic components of the Sample Processor one should ground himself and his tools by grasping a grounded object (e.g. the instrument housing or a radiator) in order to eliminate any electrostatic charges that may be present.

• Mains connection

This instrument must only be operated at the specified mains voltages (see rear panel of instrument).

• Opening a Sample Processor

When the Sample Processor is connected to the mains supply the instrument must not be opened, nor should any of its components be dismantled as otherwise one could come into contact with currentcarrying components. Before opening the instrument it must be separated from all current sources. The mains cable has to be removed from the mains connection socket!

Metrohm Sample Processor, Introduction 23

Page 32

1.8 Safety information

1.8.3 Personal protection

The different drives of the Sample Processor and the 786 Swing Head possess considerable force in order that they can freely move even under heavy loads. They are fitted with electronic overload limiters that are triggered if the mechanical resistance is too high.

When the instrument is running do not intrude in the working range of the Sample Processor.

For the user there is a considerable risk of injury from manual in- terference with the automatic processes of the instrument.

LEARN

HOLD

Running methods and individual commands can be interrupted with the <HOLD> key and then continued with <START>.

Emergency stop

STOP

The <STOP> key always terminates all running processes immedi- ately (exception: initialization during switch-on).

Important!

Before you use the instrument for the first time you must install the included 6.2751.0xx Safety Shield, see p.

The Sample Processor must not be operated without the Safety

48.

Shield in position!

Fig. 10 Safety Shield

(example shown: 6.2751.0xx for transfer robotic arm)

Biohazard

The Sample Processor does not provide sufficient protection when processing potentially infectious samples or reagents.

In this case install the necessary safety devices.

24 Metrohm Sample Processor, Introduction

Page 33

2.1 Installation flow chart

2 Installation

This section described the installation of all the components of a Sample Processor and shows how it is connected to other instruments. Please read through the following sections carefully and follow the instructions in detail.

2.1 Installation flow chart

The following flow chart provides an overview of all the necessary installation work. Detailed information can be found in the given sections.

Setup Section

2.2



Connecting the mains cable Section 2.2.2



Connecting the keypad Section 2.2.3



* Mounting a 786 Swing Head Section 2.2.4



* Mounting a robotic arm Section 2.2.5



* Connecting the pumps Section 2.2.6



* Connecting a dosing device Section 2.2.7



Connecting the connection cables Section 2.3



Setting up the titration accessories Section 2.4.3



* Mounting the stand support Section 2.4.8



Mounting the safety shield Section 2.4.11

* optional

Metrohm Sample Processor, Installation 25

Page 34

2.2 Instrument setup

2.2.1 Setup

Packaging

A Metrohm Sample Processor and its specially packed accessories are supplied in very protective special packaging consisting of shockabsorbing plastic foam. Please store this packaging in a safe place; it is the only way in which the safe transport of the instrument can be guaranteed.

Checks

Please check that the delivery is complete and undamaged immediately on receipt (compare with delivery note and list of accessories given in Section fer to the information given in Section

Location

6.3, p. 137). If transport damage is evident please re-

6.4.1 "Warranty", p. 162.

The Sample Processor is a robust instrument and can therefore be used even in rough surroundings in laboratories and factories.

However, please ensure that it is not exposed to a corrosive atmosphere. The instrument should be serviced at regular intervals, particularly when operated under rough conditions.

2.2.2 Mains connection

This instrument must only be operated at the specified mains voltages (see rear panel of instrument).

Protect the connection sockets against moisture.

Mains connection 25

S: 115 VA U: 100 - 240 V f: 50 - 60 Hz

26 Metrohm Sample Processor, Installation

Page 35

2.2 Instrument setup

2.2.3 Connecting the keypad

778 789

2.2.4 Mounting a 786 Swing Head

The procedure for the installation of the 786 Swing Head is described below. This is normally carried out by the service technician.

The keypad is attached to the keyboard socket provided for it on the rear panel of the instrument. To remove the plug press both sides together.

ttachment plate

Fig. 11 Mounting the Swing Head

For Sample Processors with 2 towers Tower 1 is moved to a central lift position and Tower 2 to the parking position.

Switch off the instrument at the mains switch.

• Loosen the titration head holder fitted as standard from the lift

guide by removing the four side-mounted screws.

• Loosen the attachment plate from the titration

head holder and remove the holder.

• Screw the Swing Head onto the attachment

plate with the 2 delivered mounting screws.

• Mount the Swing Head on the lift guide.

786 Swing Head

Lift guide

Titration head holder

Metrohm Sample Processor, Installation 27

Page 36

2.2 Instrument setup

Swing

Head

Connecting to the Swing Head connection socket

Lead the connection cable of the 786 Swing Head through the guide chain of the tower and connect the mini-DIN plug of the Swing Head connection cable to the Swing Head socket on the rear panel of the tower.

Configuring the Swing Head and robotic arm

As each type of robotic arm has its own dimensions, it is essential to adapt the Swing Head setup settings to suit the particular type of robotic arm.

The necessary alterations are made in the setup dialog, see Section

3.13. The individual settings affect:

• Swing offset (default: 0°)

• Max. swing angle (default: 84°)

• Swing radius (=length of robotic arm, default: 110 mm)

• Swing direction (default Tower1: –, default Tower 2: +)

The setup dialog of the Sample Processor is opened by pressing the <CONFIG> key as the instrument is switched on. A short explanation is given in Section

3.13. Details about the individual settings and types of robotic arm can be found in the Instructions for Use of the 786 Swing Head.

2.2.5 Mounting the robotic arm

Certain robotic arms can, depending on the model, be mounted so that they swing to the right or the left. During the mounting process the location of the limiting screw of the robotic arm must be taken into account.

Limiting screw (for swing-right mounting)

Limiting screw

(for swing-left mounting)

Fig. 12 Robotic arm with limiting screw

Swing-right mounting means: The robotic arm can swing from the zero-axis (center of the rack) to the right, as seen from the front. The swing direction has to be set to '–'.

28 Metrohm Sample Processor, Installation

Page 37

2.2 Instrument setup

Robotic arms that can be mounted in two different ways (e. g.

6.1462.050) can have the limiting screw positioned according to the required swing direction (see above).

Mounting procedure

The 786 Swing Head must already be in position and configured before the robotic arm can be mounted.

• Switch the instrument off and then on again. Wait until the Swing Head drive has finished the initialization movements.

• Carefully push the robotic arm over guide cam 10 from below (see drawing). Hold the robotic arm in such a way that limiting screw 9 points toward the tower of the Sample Processor while the robotic arm assumes the maximum swing angle.

Fig. 13 Mounting the robotic arm

Details about the individual robotic arm types can be found in the Instructions for Use of the 786 Swing Head.

2.2.6 Connecting pumps

On the Sample Processor models with one built-in membrane pump one external pump per tower can be connected and controlled. The models with no pumps even have two connections for external pumps.

Ext.

Pump 2

The pump connections (for 3-pin M8 connectors) on the rear panel of the Sample Processor tower supply a feed voltage of 16 V for a max. load of 600 mA.

Suitable pump models are:

• Use the three enclosed screws to attach the robotic arm from below.

• Switch the instrument off and on again.

• Metrohm 823 Membrane Pump Unit (membrane pump, suitable for

aqueous media without particles)

• Metrohm 772 Pump Unit (peristaltic pump, suitable for organic solvents and aqueous solutions containing particles)

Metrohm Sample Processor, Installation 29

Page 38

2.2 Instrument setup

2.2.7 Connecting dosing devices and stirrers

Metrohm Sample Processors have various connections to which dosing devices and stirrers can be connected.

Stirrers

The 722/802 Rod Stirrers and 741 Magnetic Stirrer have a DIN connector and are connected to the rear panel of a tower (Tower stirrer T1 and T2).

As with other Metrohm instruments, e. g. Titrandos, the three MSB connectors (MSB = Metrohm Serial Bus) are very versatile. You can connect an 801 Stirrer or an 804 Ti Stand to them.

Dosing devices

Up to three 700/800 Dosino or 685/805 Dosimat type dosing drives can be operated by connecting them directly to the MSB sockets of a Sample Processor. One 800 Dosino or 805 Dosimat can also be connected to the MSB output connector of another instrument connected to the MSB socket, such as the 801 Stirrer, in a so-called 'daisy chain'. Please note that only one instrument of a particular type may be present in such a daisy chain, e. g. a 801 Stirrer and a 805 Dosimat.

A 700 Dosino or a 685 Dosimat must be connected directly to the MSB socket of the Sample Processor.

Dosing device and

stirrer connections

MSB1…3

The instrument will only recognize automatically a connected dosing device when it is switched on or after RESET.

MSB1

Remote

MSB2

MSB3

Fig. 14 MSB connections

RS 232

30 Metrohm Sample Processor, Installation

Page 39

2.3 Data transmission connections

Connection cables

Only Metrohm cables should be used to connect a Metrohm Sample Processor to other instruments. Only these will guarantee interferencefree data transmission.

Note:

The Remote cables for Metrohm Sample Processors and Sample Processors have markings at each end of the cable to indicate the instrument that the particular connector is intended to be used with and the connection into which it is to be plugged.

Example:

Titrino B

692 / 712 / 713

Fig. 15 Remote cable

The Sample Processor must be switched off before peripheral devices are connected, as otherwise the instruments could be damaged.

2.3.1 Remote connections

In order to connect Remote cables to Titrandos and the 780/781 pH/Ion Meter an 8.2148.010 Remote Box is required as an additional adapter; this is connected to one of the MSB sockets (MSB1…4), see above.

Sample Processor — Titrino / Titrando

with standard cable (and 6.2148.010 Remote Box)

778 789

Titrino

778 789

6.2148.010

MSB

Titrando

Cable 6.2141.020

Metrohm Sample Processor, Installation 31

Cable 6.2141.020

Page 40

2.3 Data transmission connections

Titrinos and Titrandos can be connected to a Sample Processor in the same way and can also be controlled.

Control commands:

CTL:Rm : START Device1 starts Titrino/Titrando CTL:Rm : *************1 "

Final scan:

SCN:Rm : End1 waits for end of titration (EOD-impulse) SCN:Rm : ****1*** " SCN:Rm : Ready1 waits until Titrino/Titrando is ready SCN:Rm : *******1 "

Sample Processor — pH / Ion Meter / Conductometer (692/712/713)

778 789

692 712 713

Control commands:

CTL:Rm : START device1 starts instrument CTL:Rm : *************1 " CTL:Rm : METER Mode pH switches to pH measurement CTL:Rm : *********0001* " (not for 712) CTL:Rm : METER Mode T switches to temp. measurement CTL:Rm : *********0010* " (not for 712) CTL:Rm : METER Mode U switches to mV measurement CTL:Rm : *********0011* " (not for 712) CTL:Rm : METER Mode I switches to Ipol (mV measurement) CTL:Rm : *********0100* " (not for 712) CTL:Rm : METER Mode C switches to Conc measurement CTL:Rm : *********1000* " (for 692/781 only) CTL:Rm : METER Cal pH switches to pH calibration CTL:Rm : *********0101* " (not for 712) CTL:Rm : METER Cal C switches to Conc calibration CTL:Rm : *********1001 " (for 692/781 only)

Cable 6.2141.020

32 Metrohm Sample Processor, Installation

Page 41

2.3 Data transmission connections

CTL:Rm : METER enter simulates <ENTER> key CTL:Rm : *********1111* " (not for 712)

Final scan:

SCN:Rm : End1 waits for end of measurement SCN:Rm : ****1*** "

Sample Processor — 780/781 pH / Ion Meter

778 789

6.2148.010

MSB

Cable 6.2141.020

Control commands: see above (692/712/713 pH/Ion meter/ Conductometer).

Sample Processor — 781 Ion Meter — 665 Dosimat

For ion measurements with calibration and standard addition.

778 789

6.2148.010

765

MSB

Cable 6.2141.070

The 781 Ion Meter automatically controls Stirrer T1 of the Sample Processor.

Metrohm Sample Processor, Installation 33

Page 42

2.3 Data transmission connections

Start commands: In principle these are the same commands as those given in the previ-

ous section.

Final scan:

In principle these are the same commands as those given in the previous section, with the addition of:

SCN:Rm : EndMeter waits for end impulse from 781 SCN:Rm : ***11*** "

Sample Processor— 2 x Titrino/Titrandos

778 789

Device 1

Titrino

Device 2

Titrino

Cable 6.2141.030

Control commands:

CTL:Rm : START Device1 starts Titrino/Titrando 1 CTL:Rm : *************1 " CTL:Rm : START Device2 starts Titrino/Titrando 2 CTL:Rm : ********1***** " CTL:Rm : START Device* starts both Titrino/Titrandos CTL:Rm : ********1****1 "

Final scan:

SCN:Rm : End1 waits for end of titration Titrino/Titrando 1 SCN:Rm : ****1*** " SCN:Rm : End2 waits for end of titration Titrino/Titrando 2 SCN:Rm : *1****** " SCN:Rm : Ready1 waits until Titrino/Titrando 1 is ready SCN:Rm : *******1 " SCN:Rm : Ready2 waits until Titrino/Titrando 2 is ready SCN:Rm : **1***** " SCN:Rm : Ready* waits until both Titrino/Titrandos are ready SCN:Rm : **1****1 "

The combined operation of the Titrino/Titrando/pH meter can also be carried out without any problems by the same means.

34 Metrohm Sample Processor, Installation

Page 43

2.3 Data transmission connections

Sample Processor — Titrino/Titrando/pH Meter — 665/725 Dosimat

778 789

Titrino

765

Cable 6.2141.040

Control commands:

CTL:Rm : START Device1 starts Titrino CTL:Rm : *************1 " CTL:Rm : START Dos1 starts Dosimat 1 CTL:Rm : *******1****** "

Final scan:

SCN:Rm : End1 waits for end of titration (impulse) SCN:Rm : ****1*** " SCN:Rm : Ready1 waits until Titrino is ready SCN:Rm : *******1 "

Sample Processor — Titrino/Titrando/pH Meter — 2x 665/725 Dosimat

778 789

Tit rino

765

Cable 6.2141.050

Control commands:

CTL:Rm : START Device1 starts Titrino CTL:Rm : *************1 " CTL:Rm : START Dos1 starts Dosimat 1

Metrohm Sample Processor, Installation 35

Page 44

2.3 Data transmission connections

CTL:Rm : *******1****** " CTL:Rm : START Dos2 starts Dosimat 2 CTL:Rm : *****1******** " CTL:Rm : START Dos* starts Dosimat 1 and 2 CTL:Rm : *****1*1****** "

Final scan:

SCN:Rm : End1 waits for end of titration (impulse) SCN:Rm : ****1*** " SCN:Rm : Ready1 waits until Titrino is ready SCN:Rm : *******1 "

36 Metrohm Sample Processor, Installation

Page 45

2.3 Data transmission connections

2.3.2 Serial connections (RS232)

Many different connection to the RS232 interface are possible. As well as all Metrohm instruments which understand the Metrohm Remote language (see 'Technical Reference 8.789.1033'), a printer (requirement: serial interface or parallel/serial converter) or a personal computer can be connected. Instruments from other manufacturers that have a serial RS232 interface can also be connected.

Titrino

Cable 6.2143.040

Printer cable, see next page but one

Fig. 16 RS232 connections

A precondition for correct data transmission is that the transmission parameters are set correctly, these must correspond to the interface settings of the connected instrument (see next page).

The following section provides information about the settings and cables required for the connection of a printer.

Metrohm Sample Processor, Installation 37

Page 46

2.3 Data transmission connections

2.3.3 Connecting a printer

A printer with a serial or parallel interface can be connected to the RS232 interface for printing out reports (e. g. parameter report).

Printers with the following printer emulation can be connected:

IBM IBM Proprinter and printers with IBM emulation

Epson EPSON printers and printers with EPSON emulation

Seiko Seiko printer DPU-411

Citizen Citizen printer IDP560 RS

HP HP printers and printers with HP PCL3 emulation

If you wish to connect a different printer then you must ensure that it can emulate one of the printer modes supported by the Sample Processor.

Printers with a parallel interface require a serial/parallel converter (e.g.

2.145.0300) and the 6.2125.020 Cable.

The Sample Processor must be switched off before a printer is connected to the RS232 interface!

The interface parameters are entered in the configuration menu under

>RS232 settings".

The following table provided information about connecting some selected printers.

38 Metrohm Sample Processor, Installation

Page 47

2.3 Data transmission connections

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

Printer Cable 789/789 settings Printer settings

Custom DP40-S4N

Seiko DPU-414

Citizen iDP562 RS

Epson LX300+

HP Desk Jet with serial interface

HP Desk Jet with parallel interface

6.2134.110 Send to: Citizen Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity: none Handshake: HWs

6.2134.110 Send to: Seiko Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity: none Handshake: HWs

6.2134.050 Send to: Citizen Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity: none Handshake: HWs

6.2134.050 As above, or Send to: Epson

6.2134.050 Send to: HP Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity: none Handshake: HWs

2.145.0330

RS232/ Parallel Converter

Send to: HP Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity: none Handshake: HWs

IDP-560 EMULATION FONT MAP = ENGLAND PRINT = REVERSE LITTLE CR CODE = VOID CR AFTER B. FULL = VOID CR ON B. EMPTY = VALID BUFFER 1K BYTE BAUD RATE = 9600 PROTOCOL = 8,N,1 FLOW CONTROL CTS-RTS

none

SSW1

see printer manual

A4 Papier

see printer manual

Metrohm Sample Processor, Installation 39

Page 48

2.4 Connecting up accessories

pray

2.4 Connecting up accessories

2.4.1 Connecting rinsing and aspiration equipment

from aspiration tip

to waste canister

Both the existing built-in membrane pumps and external pumps can be used for rinsing the titration

to s

from rinsing solution

nozzles

Spray nozzles

Spray nozzles (6.2740.030) can be used for rinsing electrodes and dosing tips.

head and aspirating off samples that have been processed. The necessary tubing is supplied with the corresponding Metrohm instruments and is easily mounted on the Sample Processor.

Attach the tubing for the spray nozzles and the aspiration tip according to the diagram on the left and lead them through the guide chain.

Fig. 17 Distributor piece

The spray nozzles are inserted in the oblique openings of the titration head. These are connected to the distributor block on the guide chain with tubing (6.1805.420). The three distributor block openings (M6) provided for them must all be occupied. Any unoccupied openings must be sealed with an M6 threaded stopper (6.1446.040) to prevent liquid escaping during the rinsing process.

The tubing is attached to the guide chain. It may be necessary to remove the stud of the first link in the chain.

40 Metrohm Sample Processor, Installation

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2.4 Connecting up accessories

Aspiration tip

In the macro titration head the M8 aspiration tip (6.1543.170) is placed in a vertical opening (SGJ9). In the micro titration head a vertical opening is also used. The tip is connected with a piece of PTFE tubing (6.1805.510) and a 6.1820.030 Screw connector to Pump 2 (marking on valve '').

Rinsing process

In an ideal rinsing process (with two pumps) the sample solution is first aspirated off. The electrode is then rinsed in an empty beaker and the rinsing solution is aspirated off at the same time. A short overrun of the aspiration pump ensures that the sample vessel (or titration cell) is emptied completely.

Sequence:

PUMP 1.2 : 10 s PUMP 1.* : 3 s PUMP 1.2 : 3 s

Chemical resistance

The pump heads of the membrane pumps, the connection nipples and the union nuts are made of PVDF. PVDF is resistant to many chemicals.

The following should not be used: acetone, acetic anhydride or dimethylformamide (DMF). The membrane, the valve disks and valve components are made of PTFE and are resistant to almost all chemicals. If your sample contains solids (e.g. silver chloride) or sticky substances then, instead of the membrane pump built into the Sample Processor, you should use the 772 Pump Unit.

The polyethylene canisters (6.1621.000) used as rinsing or waste canisters are (only) suitable for aqueous solutions.

2.4.2 Attaching the tubing

For attaching the tubing the individual chain links can be opened with a screwdriver or similar object.

Mind the markings on the chain links.

Fig. 18 Attaching the tubing

Metrohm Sample Processor, Installation 41

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2.4 Connecting up accessories

2.4.3 Installing the titration accessories

Macro titration head

6.1458.010

Electrode

Aspiration tip M8

6.1543.170

Buret tip

802 Stirrer

2.802.0020

Spray nozzle M6

6.2740.020

SGJ sleeve SGJ14

6.1236.020

Threaded stopper

4.658.0180

Guide sleeve SGJ9

6.2709.070

Stirrer shaft

6.1909.020/6.1909.040

Micro titration head

6.1458.020

Fig. 20 Micro titration head

Only special micro-electrodes can be used in the micro titration

head, see list of accessories,

161.

Fig. 19 Macro titration head

Use a 741 Magnetic Stirrer instead of a Rod Stirrer.

Information about the macro titration head

The SGJ14 opening indicated by an arrow has been bored slightly obliquely so that a rod stirrer or electrode can be centered in a narrow titration vessel.

42 Metrohm Sample Processor, Installation

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2.4 Connecting up accessories

Robotic arm with titration head

6.1462.050

The titration head can be equipped with one 802 Rod Stirrer, up to two micro electrodes, three buret tips and three spray nozzles.

Micro electrode

Aspiration tip M8

6.1543.170

Buret tip (drawn back)

802 Rod Stirrer

2.802.0020

Spray nozzle M6

6.2740.030

Threaded stopper M8 4.658.0180 for micro electrode or buret tip

Guide sleeve SGJ9

6.2709.070

Stirrer shaft

6.1909.030

Fig. 21 Robotic arm with titration

accessories

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2.4 Connecting up accessories

2.4.4 Assembling pipetting accessories

Either a left-swinging (

6.1462.030) or right-swinging

6.1462.040) robotic arm can

( be used for sample transfer.

Pipetting tubing 10 mL

6.1562.100 (or 6.1562.020, etc.)

Guide shaft

6.1823.010

Robotic arm for sample transfer

6.1462.030 or 6.1462.040

Fig. 22 Transfer robotic arm with pipetting

accessories

Before pipetting tubing A is used its tip should be drawn out as fine as possible (except for high-viscosity samples).

44 Metrohm Sample Processor, Installation

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2.4 Connecting up accessories

2.4.5 Installing a double-hollow needle

Fig. 23 Transfe r robotic arm with double-

hollow needle

For sample transfer from closed containers by means of a double-hollow needle the 6.1462.090 right-swing robotic arm with luer lock adapter can be installed.

FEP tubing M6 (e.g. 6.1562.110 pipetting tubing 2 mL)

M6 adapter

Swing head with luer lock adapter (6.1462.090)

Luer lock adapter

Double-hollow needle with luer lock connector(6.2816.100)

The parts listed above are contained in

6.5619.000 sample transfer accessory set.

Fig. 24 Spray nozzles

2.4.6 Spray nozzles

The 6.2740.020 spray nozzles are installed as shown in the diagram. Their insertion height is adjustable so that an optimal rinsing effect can be achieved no matter how the head is equipped.

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2.4 Connecting up accessories

2.4.7 Magnetic stirrer

A 741 Magnetic Stirrer can be

Sample rack

placed in any position on the stirrer guide below the sample rack and moved about as required.

Guide rail

The 801 Magnetic Stirrer or 804 Titration Stand is connected to an MSB socket on the rear of the Sample Processor chassis.

2.4.8 Mounting the stand support

An external titration or measuring cell can be mounted on the Sample Processor by using the 6.2001.070 Stand Support. The stand support is attached to stirrer guide of the Sample Processor and fixed in position with the two socket head screws.

Cross strut

Socket head screws

It is connected to the rear panel of the tower (

Fig. 25 741 Magnetic stirrer

• The height and side at which the cross strut is fixed are adjustable. It is fixed in position on the rear panel of the tower with the screw provided.

• If it is to be mounted on a 789 Robotic Sample Processor XL then the support rod must be moved back by 3 cm. A second mounting hole is provided in the base plate for this reason.

connector).

2nd mounting hole

Fig. 26 Stand support

46 Metrohm Sample Processor, Installation

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2.4 Connecting up accessories

2.4.9 Installing the collection trough

Two different sizes of collection trough are available as optional accessories for the Sample Processors. They are intended to prevent any escaping liquid from spreading over the bench or penetrating the instrument housing. The two models are:

• 6.2711.060 for 778 Sample Processor with 42 cm racks

• 6.2711.070 for 789 Robotic Sample Processor XL with 48 cm

racks

Fig. 27 Collection trough

Attach the supplied tubing to the collection trough outlet. Remove the sample rack and place the collection trough on the turntable so that it lies on the stirrer guide of the Sample Processor. The other end of the tubing should be located in a sink or waste container.

2.4.10 Sample racks

Magnet holder

Magnet sensor

Sample racks are attached so that the two guide pins are located in the openings provided for them in the base of the rack.

After a sample rack has been placed in position it should be initialized with <RACK> so that the magnet code of the rack can be read in. This is only possible when the rack is in the initial position.

Fig. 28 Attaching a sample rack

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2.4 Connecting up accessories

Sample racks for the 789 Robotic Sample Processor XL (48 cm dia.) have a handle with fixing screws. This handle is used to fix the rack on the Sample Processor turntable by turning it clockwise.

Fig. 29 Sample rack for XL models

2.4.11 Mounting the safety shield

It is essential that the safety shield is mounted before the Sample Processor is used for the first time. Not only does it provide an effective protection against splashes, but it also considerably reduces the risk of injury. Various versions of the safety shield are available. The safety shield is mounted on the Sample Processor tower with the screws provided. The position of the safety shield can be modified to suit the height of the sample beakers.

ttachment screw

Fig. 30 Mounting the safety shield

Fig. 31 Safety shield for Swing Heads

48 Metrohm Sample Processor, Installation

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2.5 Start-up

Some instrument settings must be made on the Sample Processor before it is used for the first time. These are:

• Dialog language

• Counter setting of running time meter

• Tower configuration

• Robotic arm settings (optional)

• Rack definitions

• Dosing unit configurations

• RS232 interface parameters

All these settings are found in the configuration menu that you can open with the <CONFIG> key.

Under

>auxiliaries:

• Set the dialog language to English, see p.

• Enter a warning limit under

>>running time meter, see p. 58.

57.

Recommendation: 1000 h

Under

>tower 1 and >tower 2:

• Limit the max. stroke path, i.e. set the lowest possible lift position, see p.

58. Recommendation: 160…200 mm

(Can be set with the LEARN function)

• If a 786 Swing Head is installed then, under

>>swing head 1, set

the swing position for the robotic arm, select a swing angle for at least one external position and set its working height, see p. 58ff. All this can be set using the LEARN function.

Under

>rack definitions:

• Load the rack data of the attached sample rack and set the various lift positions (working position, shifting position, rinsing position, etc. for each lift) for processing the samples, see p. 61ff. This can all be done by using the LEARN function.

• Select a beaker sensor. For single row samples racks the optical sensor of the tower should be selected.

• Under

>>>special positions you may want to define one or

more special beaker positions. The rack position for the special beaker (e.g. rinsing beaker, conditioning beaker) must be entered and the working position must be set for each lift (with the LEARN function), see p.

61ff.

• The rack definitions must be saved and then the sample rack must be initialized with the <RACK> key.

Metrohm Sample Processor, Installation 49

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2.5 Start-up

Under

>Dosing units:

• Select dosing drive 1…3

• For each port (1…4) of the corresponding Dosing unit set the

max. dosing rate and enter the tubing dimensions, see p.

63ff. These settings are required for preparing the Dosing unit (with the PREP function of the DOS command). The dosing rate must be reduced for viscous liquids.

Under

>RS232 settings:

If a PC control software (e. g. TiNet or Tiamo) is used then it may be necessary to match the transmission parameters of the serial interface to those of the software, see p.

65ff. However, the default settings are

suitable for data transmission.

50 Metrohm Sample Processor, Installation

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3.1 Operating principles

3 Operation

As well as the basic functions that can be carried out manually, this section also described the configuration of a Sample Processor. Detailed descriptions of the way that run sequences are created and how methods are managed are given.

3.1 Operating principles

3.1.1 Display

The keypad (SC Controller) display consists of two lines each with 24 characters.

The first line is used as the title line and shows the current method together with the number of processed samples. In the editing mode the menu titles are shown here.

The second line is used as the status line and shows specific activities that depend on the operating condition. It is used as the input line in the editing mode.

Normal state

Method name 

Pump status 

Sample counter 

******** counter 1/12

PUMP--++STIR+---- ready

 Stirrer status

Method sequence

Running sequence 

******** counter 2/12 START 03 WAIT 11 s

 Current command with line number

 Instrument status

 Parameter

Editing mode

Menu line or command 

 Menu title

>Sample sequence 1 MOVE 1 : sample

 1

parameter

 2

parameter

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3.1 Operating principles

3.1.2 Instrument dialog

The instrument dialog of the Sample Processor is arranged in menu levels in which the following rules apply:

Main menu

The <CONFIG>, <PARAM> and <USER METHOD> keys of the Sample Processor open a main menu whose thematically arranged submenus are accessed by repeatedly pressing this key or with <>. The name of the main menu appears in the first line.

Submenu

Each submenu has its own title which is indicated by

">" and appears

in the lower line of the display. From the title you can use <ENTER> to access the individual questions with which the most important instrument settings can be altered. The first line of the display always shows the name of the active submenu.

Navigation in the menus is by the cursor keys; with <HOME> you can access the first line of the menu and with <END> the last one.

<QUIT> exits the active menu and accesses either the next superior menu or the normal operating condition.

<ENTER> always opens a submenu or confirms the data input of the lowest menu level.

Input lines

For input lines without

":" the values can be entered by the numerical

keys. The set value is accepted with <ENTER> and the next line appears.

For input lines with

":" predefined values can be selected with the

<SELECT> key. <ENTER> accepts the set value and the next line appears.

Depending on the parameter, <CLEAR> is used to set the initial value. The <CLEAR> key is also used to reject incorrectly entered values.

<QUIT> exits the questions and returns to the submenu.

The following schematic diagram shows the instrument dialog arrangement.

52 Metrohm Sample Processor, Operation

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3.1 Operating principles

Normal state

KEY

QUIT

Kex title >Submenu 1

KEY

Key title >Submenu 2

KEY

ENTER

>Submenu 1 Inquiry 1

ENTER

>Submenu 1 Inquiry 2

>Submenu 1 Inquiry n

>Submenu 2 Inquiry 1

ENTER

QUIT

Key title >Submenu n

KEY

>Submenu 2 Inquiry 2

ENTER

>Submenu 2 Inquiry n

Fig. 32 Dialog arrangement

Metrohm Sample Processor, Operation 53

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3.1 Operating principles

3.1.3 Data input

Input line

Either one or two parameters can be entered in a menu line or a sequence. A blinking block cursor indicates where a parameter can be entered.

>stirring rates stirrer tower 1 █ 3

  

Menu entry Cursor Parameter

>sample sequence 04 STIR █ T1 : 1 s

  

Command 1

Switching between the parameters is carried out with the arrow keys <> and <>. <ENTER> moves the cursor automatically to the right, <QUIT> moves it to the left.

<Select> (Selection drum)

TOWER

SELEC T

Data can usually be entered directly by the numerical keys of the keypad. For entries marked by a colon the <SELECT> key can be used to dis- play a selection of entries. This selection is cyclically arranged like a revolving drum.

Example:

 Title line  Input line

parameter 2nd parameter

>RS232 settings character set: IBM

IBM

>RS232 settings character set: Epson

HP Epson Seiko

Citizen

<ENTER>

54 Metrohm Sample Processor, Operation

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3.1 Operating principles

3.1.4 Text input

The text editor can be used wherever provision is made for the entry of a text.

Numbers can be entered directly via the keypad.

ENDSEQ

The "<" or ">" keys open the text editor. With "<" an existing character

string is deleted and the text cursor moves to the left-hand end of the

input field. With ">" an existing character string is retained, the text cursor moves to the last character of the existing text. A character string is displayed that consists of all the characters that can be entered in alphabetic order. The currently selected character always blinks (text cursor).

Character selection

The "<" and ">" keys move the character string made up of all the se- lectable characters (upper and lower case letters, numbers and special characters, arranged alphabetically) in the selected direction past the text cursor. Pressing either of these keys once moves the character string in the corresponding direction by one position. Rapid character string movement is achieved by keeping the key pressed down.

Confirming character selection

The <ENTER> key appends the character currently under the text

ENTE R

cursor to the existing text line. When the complete width of the text input field has been filled the text input mode is exited and the text line is accepted with <ENTER>.

RESET

CLEAR

Delete character

The <CLEAR> key deletes the last character of an existing text line. The text cursor automatically moves one character to the left.

Ending text input

QUIT

<QUIT> exits the text input mode. The displayed text line can then be accepted with <ENTER> or rejected by pressing <QUIT> a second time.

Metrohm Sample Processor, Operation 55

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3.1 Operating principles

Arrangement:

>store method method: ********

"<" or ">"

blinking text cursor

>store method



method:

<ENTER>

>store method method:

>store method method: Chloride

ABCDEFGHIJ...abcd...1234...*%&/()=...

DEFGHIJ...abcd...1234...*%&/()=...



<QUIT>

<ENTER>

blinking text cursor

"<" or ">"

...<ENTER>...

<QUIT>

character chain

2x ">"

reject

Fig. 33 Text input

Fig. 33 shows how a character string can be entered, e.g. for naming a method. Text input is concluded with <QUIT>. The whole of the entered character string is then shown and can be accepted with <EN- TER> or rejected with <QUIT>.

56 Metrohm Sample Processor, Operation

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3.2 Configuration

her

3.2 Configuration

CONFIG

Main menu:

configuration >auxiliaries

configuration >tower 1

configuration >tower 2

configuration >rack definitions

configuration >Dosing units

configuration >RS232 settings

• Open submenu with <ENTER>

• Use <> or <> to move up and down by one

menu item

• Use <HOME> or <END> to move to the first or last menu item

• Use <QUIT> to return to operating condition

3.2.1 Miscellaneous

configuration >auxiliaries

>auxiliaries dialog: english

Use <QUIT>

for next hig

eve

english, deutsch, français, español

>auxiliaries display contrast 3

0…3…7 0 = low contrast

>auxiliaries beeper: ON

ON,OFF

>auxiliaries external Start: off

on, off

Normally the Sample Processor takes over the complete run control for a sample series as the "Master". This may be unwanted, particularly if an automated system has been set up that includes instruments that are not from Metrohm. This is why the Sample Processor can also be started from any external instrument via the Remote interface.

external Start: ON the run sequences of the Sample Processor will

With

Submenu for basic settings

Open the submenu with <ENTER>

Select dialog language

Set display contrast

7 = high contrast

Beep for warnings on or off

Switch on external start via Remote line (Input 7)

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3.2 Configuration

be started as soon as input line 7 is activated at the Remote interface (low level). The run sequences of the Sample Processor will be stopped when input

line 6 is activated (low level). The technical details can be found in the

8.789.1033 Technical Reference of the Sample Processors.

>auxiliaries >>running time meter

Shows the elapsed time

0…9999 h

Submenu for running time meter, open with <ENTER>

>>running time meter elapsed time 0.0 h

Warning limit for running time meter

OFF, 0…9999 hours

>>running time meter warning OFF h

The running time meter is used to support the regular maintenance of the Sample Processor. If a warning limit is entered then, when this period has elapsed, a message will appear indicating that maintenance is required.

>auxiliaries device label

8 ASCII characters

Name of the instrument for identification

>auxiliaries program 5.789.0011

read only

Program version

58 Metrohm Sample Processor, Operation

Page 67

3.2 Configuration

3.2.2 Tower settings

Sample Processor models with two towers can have each tower separately equipped and separately configured. For models with a single tower only the configuration menu for Tower 1 can be accessed.

configuration >tower 1

Submenu for basic settings for Tower 1

Open the submenu with <ENTER>

>tower 1 max. stroke path 235 mm

0…235 mm

Max. lift range for Lift 1

This max. stroke path setting is important for safety reasons. Correct entry of this value can prevent electrode breakage, as the titration head cannot move any lower than the position entered here (0 mm = lower stop of lift).

>tower 1 min. beak. radius * mm

*, 1…100 mm * = any value

Sets the minimum required beaker radius for processing at Tower 1

This is also a safety setting. In order to prevent a fully equipped, wide titration head from trying to enter a narrow sample beaker a limit for the minimum necessary beaker radius can be entered here. During a method sequence the value entered here will be compared with the value given for the effective beaker radius in the rack table before the lift is lowered and, if necessary, an error message will be produced. Entering * prevents a comparison from being made.

>tower 1 >>swing head 1

Submenu Swing Head 1 Open with <ENTER>

If a 786 Swing Head equipped with a robotic arm is mounted on the Sample Processor then it is essential that the correct settings for the mounted robotic arm are entered, as otherwise the instrument will not be able to position it exactly.

Each of the following settings can be interactively defined with the LEARN function. Press the <LEARN> key and then move the lift or robotic arm with the arrow keys <> and <> or <> and <>. The set values can be accepted with <ENTER> and corrected later.

Setting the rinsing height for ex-

)

ternal positions *

0…235 mm

>>swing head 1 rinse position 0 mm

Setting the swing height for ex-

)

ternal positions *

0…235 mm

>>swing head 1 shift position 0 mm

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3.2 Configuration

configuration >tower 2

… see Tower 1

Swing angle for external posi-

)

tion 1 *

Offset…84.00…max. angle+offset

>>swing head 1 external pos.1 84.00°

0° = points to rack center

The swing angle for the external positions is entered as an absolute angle. The input limits are defined by the offset of the Swing Head drive (approx. 9°) and the set max. swing angle range.

Setting the working height for

)

external position 1 *

0…235 mm

>>swing head 1 work position1 0 mm

Swing angle for external posi-

)

tion 2 *

… up to external pos. 4

* can be set with LEARN function

>>Robotic arm 1 external pos.2 84.00°

Submenu for basic settings for Tower 2

Open the submenu with <ENTER>

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3.2 Configuration

her

3.2.3 Rack definitions

configuration >rack definitions

>rack definitions >>recall rack

Use <QUIT>

for next hig

eve

In order to make a modification to the definition of a sample rack the rack data must first be loaded. The data of the Metrohm standard racks is stored under their ordering number.

>recall rack name: 6.2041.310

10 ASCII characters

The <SELECT> key can be used to make a selection from the saved rack data. The rack data is loaded with <ENTER>. The first selection to appear is the rack name of the currently attached rack.

>recall rack code 000001

000001…111111

The magnet code is used for the unambiguous identification of the rack. The magnet code is recognized during the initialization of the rack. This is why the <RACK> key should be pressed whenever a rack is changed.

>recall rack work position T1 0 mm

0…235 mm (in mm from upper stop point)

>recall rack work position T2 0 mm

0…235 mm (in mm from upper stop point)

>recall rack rinse position T1 0 mm

0…235 mm (in mm from upper stop point)

>recall rack rinse position T2 0 mm

0…235 mm (in mm from upper stop point)

>recall rack shift position T1 0 mm

0…235 mm (in mm from upper stop point)

Submenu for defining individual racks

Open the submenu with <ENTER>

Loads rack definitions

Name of the rack to be loaded

Magnet code of the rack See table on p.

91.

Working position for sample positions at

)

Tower 1 *

Working position for sample positions at

)

Tower 2 *

Rinsing position for sample positions at

)

Tower 1 *

Rinsing position for sample positions at

)

Tower 2 *

Shifting position for sample positions at

)

Tower 1 *

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3.2 Configuration

her

>recall rack shift position T2 0 mm

0…325 mm (in mm from upper stop point)

Shifting position for sample positions at

)

Tower 2 *

>recall rack special pos. T1 0 mm

0…325 mm (in mm from upper stop point)

Special position for sample positions at

)

Tower 1 *

>recall rack special pos. T2 0 mm

0…325 mm (in mm from upper stop point)

Special position for sample positions at

)

Tower 2 *

>recall rack beaker radius * mm

*, 1…100 mm * = any value

Effective beaker radius for the sample positions on the rack

This setting is required for an automatic check of the beaker radius, see

58.

>recall rack beaker sensor: Tower

Tower, SwingH, OFF

Selection of the beaker sensor

The beaker sensor checks the presence of a sample beaker when executing a MOVE command.

>recall rack rack offset 0.00°

-5.00…0.00…5.00°

Correction for the rotation angle of a

)

sample rack *

)

All the above lift positions and the rack offset can be set by using the

<LEARN> function.

Special beaker positions

>>recall rack >>>special positions

Submenu special beaker positions Open with <ENTER>

Use <QUIT>

for next hig

Special beaker positions are predefined places on a sample rack that are not treated as sample positions. They can be occupied by rinsing beakers or

eve

conditioning beakers and selectively addressed during a run sequence. Up to 16 special beaker positions can be defined per rack. For each spezial beaker the work position of the lift (tower 1 and 2) and the beaker radius can be set, see above.

Selection of special beaker

1…16

>>>special positions special beaker 1

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3.2 Configuration

Rack position of the special beaker

etc. up to special beaker 16

>>special positions 1 rack position 0

0…number Pos.

0 = not defined

>rack definitions >>store rack

Save rack definitions

In order to store modifications to the definition of a sample rack the submenu

>>store rack is selected.

>store rack name: 6.2041.310

10 ASCII characters

Name of rack

With the <SELECT> key you can select one of the existing rack names. The rack data is stored with <ENTER>. Any rack name can be used. The input of any rack name can be made directly via the numerical keys or in the text input mode, see p.

55. Selection of the alphanumerical characters with the <

and > keys or <PRINT> and <RACK>.

>rack definitions >>delete rack

Delete rack definitions

The submenu >>delete rack must be selected if a rack definition is to be deleted.

>delete rack name: 6.2041.310

Name of the rack

The <SELECT> key can be used to select one of the existing rack names. <ENTER> confirms the selection. <QUIT> stops the deletion process. Before the deletion a question appears.

>rack definitions delete 6.2041.310 ?

<ENTER> confirms the deletion. <QUIT> stops the deletion process.

When the submenu ' data a request appears about saving the rack data.

>rack definitions overwrite 6.2041.310 ?

>rack definitions' is exited without saving modified

Confirm the question (store the rack definitions) by pressing the <ENTER> key. Reject storage with <QUIT>.

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3.2 Configuration

her

3.2.4 Dosing units

Metrohm Exchange units (with 685 and 805 Dosimats as the dosing drive) and Dosing units for the Dosino 700 and 800 systems can be used with the Sample Processors. The following settings are used for preparing the Dosing units (PREP function). The tubing dimensions (length and diameter) are used for calculating the rinsing volumes. If Exchange units are used then only the dosing rate is effective.

configuration >Dosing units

Submenu for the Dosing unit settings

Open the submenu with <ENTER>

Use <QUIT>

for next hig

eve

>Dosing units Dosing unit 1

1…3

The Dosing unit selection must be confirmed with <ENTER>. It will then be shown in the first menu line.

Selection of Dosing unit or dosing device connection

>Dosing units 1 max. rate 1 160 ml/min

0.01…160 ml/min

Max. dosing and filling rate for Port 1 (depends on cylinder size)

>Dosing units 1 tube length 1 1000 mm

0…1000…30000 mm

Length of tubing at Dosino Port 1

>Dosing units 1 tube diameter 1 2 mm

0.1…2…20 mm

Diameter of tubing at Dosino Port 1

>Dosing units 1 max. rate 2 160 ml/min

0.01…160 ml/min

Max. dosing and filling rate for Port 2 (depends on cylinder size)

>Dosing units 1

........... to port 4

Input of tubing parameters for all four ports of a Dosing unit.

64 Metrohm Sample Processor, Operation

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3.2 Configuration

her

3.2.5 RS232 settings

The correct settings of the interface parameters of the serial RS232 interface is essential for the perfect functioning of data transmission to and from the Sample Processor. This includes the control of the instrument by using a PC software such as TiNet or Tiamo, backing up of configurations or methods with the VESUV software from Metrohm or printing out a parameter report on a connected printer.

configuration >RS232 settings

Submenu for serial interface settings

Open the submenu with <ENTER>

Use <QUIT>

for next hig

eve

>RS232 settings baud rate: 9600

300,600,1200, 2400,4800,9600, 19200

Transmission rate in baud

>RS232 settings data bit: 8

7,8

Number of data bits

>RS232 settings stop bit: 1

1,2

Number of stop bits

>RS232 settings parity: none

even, odd, none

Parity selection

>RS232 settings handshake: HWs

HWs,SWchar,SWline, none

Handshake selection

>RS232 settings character set: IBM

IBM,HP,Epson, Seiko,Citizen

Character set for printer and PC (printer emulation)

The settings for the printers recommended by Metrohm are listed on p. 37ff. If your printer is not shown there then we recommend the setting "Epson". It may be necessary to consult the printer manual. For data transmission using personal computers you should select "IBM".

>RS232 settings RS control: ON

ON,OFF

Switch data reception on/off

If Remote control is switched off then no data will be received, but reports can still be printed out.

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3.3 Composition of a method

All the settings of the parameter menu form a method and can be stored as such.

3.3.1 Run sequences and method parameters

PARAM

Main menu:

parameters number of samples: rack

1…999, rack,∗

Number of samples to be processed

rack = one sample rack rotation ∗ = infinite

In the rack setting all the sample positions of the current rack will be processed (max. no. of rack positions minus number of special beakers), with only the positions occupied by sample beakers being counted. It is important that the Sample Processor can recognize the rack. This is only possible when the rack is in initial position. We recommend that each time a rack is changed the Sample Processor is initialized with <RACK>.

parameters >start sequence

parameters >sample sequence

parameters >final sequence

parameters >changer settings

parameters >stirring rate

parameters >Dosing unit def.

parameters >timeout settings

parameters >nanual stop

Open submenu with <ENTER>

Use <> or <> to move up and down by one menu item Use <HOME> or <END> to reach the first and last menu item Use <QUIT> to return to normal operating condition

Submenus:

In each of the submenus

>start sequence, >sample sequence and >final sequence up to 99

command lines can be entered as a run sequence. The commands can be entered directly via the keypad. The command keys on the right-hand side of the keypad are available.

parameters >start sequence

Commands for the start sequence of the sample series

Open the submenu with <ENTER>

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3.3 Composition of a method

The start sequence is carried out once at the start of a sample series. For example, this can be used for rinsing or conditioning an electrode.

parameters >sample sequence

parameters >final sequence

Series operating

<START>

Commands for the processing of each sample

Open the submenu with <ENTER>

The sample sequence is carried out when each individual sample in a sample series is processed.

Commands for the final sequence of the sample series

Open the submenu with <ENTER>

The final sequence is carried out once at the end of a sample series. For example, it can be used to move to a rinsing or conditioning beaker.

number of samples

start sequence final sequence

sample sequence

normal state

Creating methods

In principle the same input rules apply for creating run sequences as for manual operation, i. e. after selecting a command and entering the necessary parameters the entry is confirmed with <ENTER>. The next command line is then selected and a new command can be entered.

For more comfortable parameter input the LEARN function is available for certain commands. It can be used to accept direct values that are set when a single command is carried out manually. Please refer to p.

The TRACE function can be used to execute each entered command line individually in the editing mode. See p.

Navigation in a sequence is the same as in other menus. In addition, the <INSERT> and <DELETE> keys are available.

<INSERT> inserts a new command line above the current line of a sequence. It is automatically occupied with the NOP command, which has no function. The following lines move downward by one position.

<DELETE> deletes the current line of a sequence. The following lines move upward by one position.

112 for details.

114.

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3.3 Composition of a method

3.3.2 Sample Processor settings

parameters >changer settings

>changer settings rack name: *

*,10 ASCII characters * = no particular rack

With this setting the user can be forced to use a particular rack for the selected method. If this is not required then

>changer settings lift rate T1 25 mm/s

5…25 mm/s

>changer settings lift rate T2 25 mm/s

5…25 mm/s

>changer settings shift rate 20°/s

3…20

>changer settings shift direction: auto.

+,–,auto. auto. = the Sample Processor selects the shortest

>changer settings rotat. increment: 5.00°

0.00…5.00…270.00°

>changer settings swing rate T1 55°/s

10…55

>changer settings swing rate T2 55°/s

10…55 (only for 2-tower models)

>changer settings swing increment 10.00°

0.00…10.00…180

>changer settings on beaker error: MOVE

MOVE, Message

Submenu for setting the Sample Processor functions

Open the submenu with <ENTER>

The sample rack assigned to the method

rack name: * must be selected.

Vertical movement rate of Lift 1

Vertical movement rate of Lift 2 (only for 2-tower models)

Speed at which the rack rotates in degrees per second

Direction of rotation of the sample rack

path for the rotation itself.

Increment angle for the command MOVE +/-rotate

Swing rate of the robotic arm at Tower 1 in degrees/second

Swing rate of the robotic arm at Tower 2 in degrees/second

Increment angle for the command MOVE +/-swing

Definition of reaction if beaker is missing (only applicable with beaker sensor on)

MOVE = the last action will be carried out

again. The next position according to the current SAMPLE command will be selected.

Message = The run will be interrupted and a

warning displayed.

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3.3 Composition of a method

When a rack position is accessed a check is made whether a sample beaker is present at the selected tower. If the run is not to be interrupted when a sample beaker is missing then MOVE can be selected. This means that, if a sample beaker is missing, the MOVE command moves on to the next sample position. The next sample is selected according to the last SAMPLE command, i.e. for a previous SAMPLE +2 command the sample will be looked for at the next-but-one rack position, etc. If a special beaker is missing an error message will always be shown and the run will be interrupted.

3.3.3 Stirrer settings

parameters >stirring rates

>stirring rates stirrer tower 1 3

1…3…15

>stirring rates stirrer tower 2 3

1…3…15

>stirring rates stirrer MSB1 3

1…3…15

>stirring rates stirrer MSB2 3

1…3…15

>stirring rates stirrer MSB3 3

1…3…15

Submenu for the stirrer settings

Open the submenu with <ENTER>

Stirring speed of the stirrer at Tower 1 (stirrer models 802, 741, 722)

Stirring speed of the stirrer at Tower 2 (stirrer models 802, 741, 722)

Stirring speed of MSB stirrer 1 (stirrer models 801, 804)

Stirring speed of MSB stirrer 2 (stirrer models 801, 804)

Stirring speed of MSB stirrer 3 (stirrer models 801, 804)

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3.3 Composition of a method

3.3.4 Dosing device settings

Both Dosinos (models 700 and 800, with Dosing units) and Dosimats (models 685 and 805, with exchange units) can be used as dosing drives on a Sample Processor. However, free assignment of the ports for the various functions is only possible with Dosinos.

parameters >Dosing unit def.

Submenu for setting the Dosing units

Open the submenu with <ENTER>

>Dosing unit def. dosing drive 1

1…3

Selection of the dosing device, or the connection

After entering the connection of the dosing device (see p.

8) and confirming its with <ENTER> the settings for the selected dosing device should then be made.

>dosing drive 1 dos.rate max. mL/min

0.01…160 mL/min, max.

Set the dosing rate

The maximum possible dosing rate depends on the size of the dosing cylinder (rule of thumb: cylinder volume x 3.3).

>dosing drive 1 fill.rate max. mL/min

0.01…160 mL/min, max.

Set the filling rate

The maximum possible filling rate depends on the size of the dosing cylinder (rule of thumb: cylinder volume x 3.3). The following entries only apply to 700/800 Dosinos. Details about Dosinos and Dosing units can be found on p.

95ff.

>dosing drive 1 dosing port 1

1…4

Define standard dosing port 1

>dosing drive 1 dosing 2 port 3

1…4

Define standard dosing port 2

>dosing drive 1 filling port 2

1…2…4

Define standard filling port

>dosing drive 1 rinsing port 2

1…2…4

Define standard rinsing inlet (if Dosing unit is exchanged)

>dosing drive 1

Define standard outlet for the prepara-

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3.3 Composition of a method

preparation port 1

1…4

>dosing drive 1 drain port 4

1…4

>dosing drive 1 cock direction: auto

auto not over desc. asc.

>dosing drive 1 not over port 4

1…4 (see above)

3.3.5 Behavior during timeout

Metrohm Sample Processors are designed to communicate with other instruments. In particular, this includes the coordination between the Sample Processor and devices connected to it. In the method sequence the SCAN command can be used to check whether an instrument is ready or to ask for an acknowledgement after a measurement has been made. However, it may happen sometimes that problems occur during a determination run and that the expected signal from the connected instrument is not received. This is known as a timeout. This means that it is possible to define a maximum waiting time that will always be allowed to elapse if a timeout occurs. In addition, the behavior of the Sample Processor when this waiting period has elapsed (SCAN timeout) can also be defined.

tion cycle

Define standard air inlet for emptying the Dosing unit

Direction of rotation of Dosino stopcock

= cock direction according to shortest path = never turn beyond port given below = cock rotation always in descending direction = cock rotation always in ascending direction

Protected port, that it not to be moved over during a stopcock rotation

parameters >timeout settings

>timeout settings SCAN timeout: OFF min

off,0…999 min

When the waiting time has elapsed the function defined below will be carried out.

>timeout settings on SCAN timeout: error

error,continue

If sage will be shown. Otherwise the sequence will be continued.

Submenu for behavior if a SCAN timeout occurs

Open the submenu with <ENTER>

Waiting time if a SCAN timeout occurs

Behavior if SCAN timeout occurs

error is set then the run sequence will be interrupted and an error mes-

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3.3 Composition of a method

3.3.6 Manual stop settings

The following settings can make a great contribution to the comfortable operation of the Sample Processor. A definition is made of what is to happen when the <STOP> key is pressed. This could be a normal manual cancellation of a running method, or an emergency stop of the complete system. Depending on the arrangement of the automated system and the type of application, it can be laid down in detail how the individual instrument components and connected instruments are to react when the <STOP> key is pressed.

parameters >manual stop options

Submenu for reaction after manual stop

Open the submenu with <ENTER>

>manual stop CTL Rmt: **************

Stop device1,

Stop device2, Stop device∗ 14 bit (1,0 or ∗)

Set signal lines at the Remote interface

Connected peripheral devices (e.g. a Metrohm Titrino) can be stopped automatically. The 14 signal lines of the Remote interface can be set as required, see also p.

31ff and p. 109ff.

>manual stop CTL RS232:

Command or character string, for output via the RS232 interface

14 ASCII characters default value '&M;$S' (= stops a Titrino)

Connected peripheral devices (e.g. a Metrohm Titrino) can be stopped automatically. Any character string can be transmitted. For details of the serial RS232 interface see "Technical Reference".

>manual stop PUMP: OFF

OFF, ON, cont. (cont. = retain condition)

Switches the pumps, or pump connec-

tions

This setting applies to all pumps and/or pump connections.

>manual stop STIR T1: cont.

cont., ON, OFF (cont.= retain condition)

Switches the stirrer at Tower 1

>manual stop STIR T2: cont.

Switches the stirrer at Tower 2 (only for 2-tower models)

cont., ON, OFF (cont.= retain condition)

>manual stop STIR MSB1: cont.

cont., ON, OFF (cont. = retain condition)

Switches the stirrer at MSB connection 1

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3.3 Composition of a method

>manual stop STIR MSB2: cont.

cont., ON, OFF (cont. = retain condition)

Switches the stirrer at MSB connection 2

>manual stop STIR MSB3: cont.

cont., ON, OFF (cont. = retain condition)

Switches the stirrer at MSB connection 3

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3.4 Commands

3.4.1 Sample Processor commands

The following commands can be programmed to form a sequence. Most of them are also available in manual operation. The following list applies to the programming of run sequences.

SAMPLE

SAMPL E

>start sequence 1 SAMPLE: = 1

=,+,– 1…999

Set current sample position

1st parameter: function

parameter: value

With the SAMPLE command you can define which sample (beaker position on the rack) is to be regarded as being the current sample position (SAMPLE = X). This is stored in a run variable and can, for example, be altered in a sample sequence (SAMPLE + X or SAMPLE – X) in order to selectively control a sample series.

Examples:

SAMPLE: = 5 SAMPLE: + 2 SAMPLE: - 1

Sets SAMPLE variable to 5, or first sample in the series to rack position 5 Increases SAMPLE variable by 2 Decreases SAMPLE variable by 1

If in a sample sequence the SAMPLE command is not programmed, then each run will automatically increases the SAMPLE variable by 1.

The SAMPLE command does not have to be used for simple applications. Unless anything to the contrary is required, the first sample in a series will automatically be assumed to be in rack position 1. This is why we recommend that special beakers are not placed on the first rack positions, but are set on the highest rack positions.

Under manual operation the <SAMPLE> key can be used before the start of a sample series to define the position of the first sample, provided that this has not already been defined in the method itself.

If a particular arrangement of sample beakers is always to be used for a certain application then the position of the first beaker can be defined in the start sequence with

SAMPLE = X and this setting can be stored in the

particular method.

The value of the SAMPLE variable remains at the end of a sample series. It is only reset to 1 when the instrument is switched on, when a RESET command (<RESET> key) is executed or after a RACK command (<RACK> key or in in a method run).

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MOVE

3.4 Commands

>sample sequence 2 MOVE 1 : sample

1,2 sample, ext.1…ext.4 spec.1…16

prev., next

+swing, -swing

+rotate, -rotate

1…999

+/-1…999

Position beaker / Swing robotic arm

1st parameter: tower

parameter: position

With the MOVE command rack positions are moved to, i.e. the turntable rotates until the sample rack is positioned so that the selected rack position is placed in front of Tower 1 or 2 (if present). If no 786 Swing Head is mounted then only the rack positions of a 1-row rack can be accessed.

With 786 Swing Head

If a 786 Swing Head is mounted then any rack positions can be moved to. The angle of rotation of the rack is then compared with the swing angle of the robotic arm and corrected accordingly.

Examples:

MOVE 1 sample MOVE 1 ext.1 MOVE 2 spec.1 MOVE 2 5 MOVE 1 next MOVE 1 +2

Parameters

In addition to a rack position, the robotic arm of a 786 Swing Head can also be swung to any external position. The selectable external positions ext.1 to ext.4 can be defined in the whole swing range from 0° up to the maximum swing angle of the robotic arm. For example, this means that it is possible to move to a titration cell located beside the sample rack.

Moves sample beaker (defined by SAMPLE variable) in front of Tower 1 Moves robotic arm at Tower 1 to external position 1 Moves special beaker 1 in front of Tower 2 Moves rack position 5 in front of Tower 2 (absolute positioning) Moves next highest rack position in front of Tower 1 Depending on the current sample position (SAMPLE variable), moves the next position but one in front of Tower 1 (relative positioning)

sample – rack position corresponding to the current value of the SAMPLE variable, see also p.

74.

ext.1 to 4 – predefined angle positions of the robotic arm. These are defined in the configuration of a tower, see also p.

58.

spec.1 bis 16 – reserved special beaker positions on the sample rack. These are defined in the rack configuration, see also p.

61.

+swing, -swing – moves the robotic arm by a certain increment angle. The sign shows the swing direction. The value of the angle is predefined under

Parameter >changer settings.

+rotate, -rotate – moves the rack by a certain increment angle. The

sign shows the rotation direction. The value of the angle is predefined

Parameter >changer settings.

under

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3.4 Commands

next, prev. – from the current rack position the next highest (next) or the next lowest (prev.) will be moved to. Special beaker positions will be skipped. If MOVE next is used at the highest rack position then the move will be made to position 1. If MOVE prev. is used at rack position 1 then the highest possible position will be moved to.

absolute positioning – the numbered rack position will always be moved to, even when this is a reserved special beaker position.

relative positioning – If a numerical rack position is given with a positive or negative sign then the selected rack position will always be relative to the value of the SAMPLE variable, i.e. to the current sample position.

Remarks

In a method sequence a MOVE command will move the lift (or both lifts) automatically to the shifting position.

After execution of the functions +/-swing or +/-rotate the lift can be moved without restrictions. No defined rack position is required. Thus it is possible to cause damages if the lift is lowered without precautions. These functions must be used with great care.

The direction of rotation is normally selected automatically by the Sample Processor. In the parameter menu under

>changer settings the di-

rection and speed of rotation can be defined specifically for particular methods. These can also be altered in a sequence with the corresponding DEF command.

If no beaker is present at the selected rack position then this will be recognized by the beaker sensor of the particular tower and the appropriate reaction will take place.

The reaction of the Sample Processors to a missing beaker can be defined in the parameter menu under

>changer settings. You can

choose between interrupting the run with an error message or selecting the next rack position (see p.

68). If a special beaker is missing the run

will always be interrupted.

If a robotic arm with a tactile piezo sensor is installed and in use, a 'MOVE sample' command will automatically run the lift to work position. This is for the sensing of the sample beaker.

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LIFT

Examples:

3.4 Commands

>sample sequence 3 LIFT: 1: rest mm

1,2,∗ work, rinse, shift,

special, rest, 0…235 mm

Lift positioning

1st parameter: tower

parameter: position

Raises or lowers one or both (∗) lifts to a defined position.

LIFT: 1: work LIFT: 1: rinse LIFT: 2: shift LIFT: 2: special LIFT: *: rest LIFT: 1: 100 mm

Moves lift at Tower 1 to working position Moves lift at Tower 1 to rinsing position Moves lift at Tower 2 to shifting position Moves lift at Tower 2 to special position Moves both lifts to uppermost position (0 mm) Moves lift at Tower 1 to position 100 mm

Working, rinsing, shifting and special positions are defined specifically for each rack in the configuration menu under

61). The rest position is the zero position (0 mm) of the particular lift,

p. i.e. its upper stop.

The lift speed can be set in the parameter menu under

changer settings

command.

Each lift can be positioned with an accuracy of one millimeter. The LEARN function is available for this (see p.

3.4.2 Switching components

Pumps and stirrers can be switched as required, either together or separately. They work independently and can be operated at the same time as other functions are being carried out.

>rack definitions (see

>sample

or altered in a sequence with the appropriate DEF

112).

PUMP

>sample sequence 4 PUMP 1.1 : 1 s

1.1…2.2 1…999 s,

1.∗,2.∗ ON,OFF

Pump control

1st parameter: pump selection

parameter: status or duration

With the PUMP command up to 4 pumps (2 pumps per tower) can be controlled separately. The first parameter selects the pump.

Syntax: T.P (T=Tower, P=Pump)

With Sample Processor models that have external pump connections instead of built-in pumps the PUMP command switches the appropriate pump connections (16 V).

The pump built into a tower as Pump 1 is always used for rinsing the titration head. Pump 2 (if present) can be used for aspirating off the

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3.4 Commands

STIR

sample solution. Combined rinsing and aspiration is possible by

or PUMP 2.*.

1.*

PUMP

The pumps can be switched on or off selectively, or operated for a particular time. The LEARN mode is very useful for determining the optimal rinsing or aspiration times (see p.

>sample sequence 5 STIR T1 : 1 s

T1, T2,T*, MSB1…3, MSB*, ∗ ON,OFF 1…999 s

113).

Stirrer control

1st parameter: stirrer selection

parameter: status, duration

With the STIR command up to 5 stirrers can be controlled separately. The first parameter selects the stirrer. With

STIR * all the stirrers can be

switched at the same time .

Selecting a stirrer

T1, T2, T* Stirrer connections as Tower 1 and 2 respectively (stirrer

models 802 / 722 / 741),

* = both connections on the tow-

ers.

MSB1…3 Stirrer/Dosing device connectors in the chassis of the Sam-

* all stirrers

The stirrers can be switched on or off selectively, or operated for a particular time.

In the parameter menu under vidual stirrer can be defined for a particular method. This can also be altered in a sequence with the appropriate DEF command.

3.4.3 Dosing device control

Connected dosing devices can be controlled separately or all at the same time . Simultaneous addition of the same volumes or simultaneous filling of the connected dosing devices is also possible (Example:

DOS *.2 fill = fill all dosing devices via port 2).

DOS

>sample sequence 6 DOS 1.* : 1 ml

*.*, 1.*…3.4 fill,release, prepar

empty, eject, endVol, compen., port, ±0.001…1…±999.999 ml

ple Processor (stirrer models 801 / 803 / 804), stirrers connected to an MSB socket.

>stirring rates the speed of each indi-

Dosing device control

1st parameter: dosing device and port selection

parameter: selects function/enters volume

MSB*= all

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3.4 Commands

The DOS command is used for controlling Dosimats and Dosinos. Up to 3 Dosinos or Dosimats can be addressed individually or simultaneously via the MSB bus control.

The 1st parameter selects the dosing device and the corresponding dosing port, at which the required function is to be carried out. If '*' is entered then the default port for the corresponding function will be used (e.g. dosing port = 1, filling port = 2, etc.)

Please note

After dosing the Sample Processor will not automatically fill the dosing cylinder. If required, this can be programmed with the com-

DOS: 1.* : fill, see below.

mand

It is possible to enter the volume to be added directly as the 2

parameter or to carry out specific functions of a Dosino. Negative volumes can also be added, i.e. a certain volume can be aspirated and then ejected again (pipetting). The minus sign is entered with the <*> key.

The functions listed below are used for complex liquid handling tasks such as pipetting.

Dosing functions:

fill Fills the Dosimat and Dosino cylinder.

release Prepares the Dosimat or Dosino for changing the Ex-

change/Dosing unit. The dosing cylinder is filled via the rinse port. The stopcock is turned to the exchange position (Port 2).

prepar. Preparation cycle (PREP) for Dosinos. All tubing is rinsed

and filled completely.

empty Tubing system and Dosino cylinder are emptied.

eject Complete Dosino cylinder contents are ejected.

endVol Ejects the cylinder content to the max. volume mark.

compen. Cancels the mechanical play between the dosing piston

and spindle.

In the parameter menu under

>Dosing unit def. the port assignments

of the Dosinos as well as the dosing and filling rates can be defined for specific methods. This can also be carried out in a sequence with the appropriate DEF command.

More details about Dosino commands are given on p.

101ff.

The Sample Processor automatically recognizes whether a Dosimat or a Dosino is connected.

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3.4 Commands

3.4.4 Communication commands

The coordination of external instruments or the explicit triggering of functions is possible via both the Remote interface and the serial RS232 interface. The interfaces can be scanned for particular signal patterns or incoming data strings. In return, individual signal lines can be set or any character strings (as control commands) can be transmitted to connected instruments.

SCAN

>sample sequence 7 SCN:Rm : Ready1

Rm,RS Ready1 Ready2

Ready∗

Cond ok End1 End2 EndMeter

Continue

8 Bit (1,0 or ∗)

Scans the Remote interface

= Device 1 ready = Device 2 ready = Devices 1+2 ready = Conditioning finished = EOD impulse device 1 = EOD impulse device 2 = End impulse 692 Ion Meter/713 pH Meter = Continue impulse from instrument any 8-bit binary pattern

In a sequence the SCN:Rm command will halt the run sequence until the predefined signal pattern has been received.

Predefined binary patterns are available; these can be selected via simple names (e.g.

Ready describes a statically set Ready line (Output 0) of a connected

Metrohm instrument.

Ready1 or End2).

End stands for a pulsed signal, e.g. EOD (=End of

Determination, Output line 3). When pulsed signals are being scanned it is not possible to scan several lines in parallel.

Setting special binary patterns allows the flexible monitoring of connected instruments. The following applies:

Example:

0 = line inactive 1 = line active * = any line condition

00000001 = input line 0 is active = Device 1: Ready1

With the LEARN function the binary patterns (=line conditions) can be adopted interactively (see p.

113).

Details about the Remote interface can be found in the Technical Ref- erence.

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3.4 Commands

SCAN

>Sample sequence 8 SCN:RS

Rm,RS

default value: ∗R"

14 ASCII characters

Scanning the RS232 interface

= scan "Ready" status message any data string with 14 characters

In a sequence the SCN:RS command will halt the method sequence until the predefined data string (up to 14 characters) has been received via the serial RS232 interface. Incoming data is checked character by character.

Make sure that the transmission parameters of the RS232 interface are identical with those of the connected device (see configuration menu

>RS232 settings, p. 65).

Any letters, numbers and special characters can be selected from the character set of the Sample Processor. '∗' can be set as wild card for any character string. (If '∗' is to be interpreted as an ASCII character then '∗∗' must be used.) A wild card can be set within a character string. When the first part of the character string has been recognized correctly then a search will be made for the first appearance of the character standing after '∗'. In this case the comparison will be made with the second part of the character string.

This function is primarily suitable for devices that understand the Metrohm Remote language, such as Titrinos. In this case the AutoInfo status messages can be scanned. The most useful of these are:

∗.T.R" Ready, 'Ready' state has been achieved, e.g. after titration ∗.T.F" Final, end of the determination has been achieved ∗.T.S" Stop, instrument has been stopped manually ∗.T.G" Go, instrument has been started ∗.E;∗ Error, error message

However, these status messages will only be transmitted when the corresponding status message has first been switched on, e.g. in the start sequence, e.g. for a Titrino with the command: CTL:RS &Se.A.T.R"ON".

More detailed information about the syntax can be found in the Instructions for Use of the instrument whose status messages are to be transmitted.

Details of the CTL command are given below.

With the LEARN function transmitted data (=character strings) can be adopted interactively (see p.

113).

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3.4 Commands

CTL

CTRL

>sample sequence 9 CTL:Rm START Device1

Rm,RS START Device1 START Device2 START Device*

SAMPLE ready START Dos1 START Dos2 START Dos* METER Mode pH METER Mode T METER Mode U METER Mode I METER Mode C METER Cal pH METER Cal C METER enter INIT 14 bit (1,0 or ∗)

Setting the Remote lines

= Starts device 1 = Starts device 2 = Starts devices 1+2 = Continue impulse to instrument = Starts Dosimat at device 1 = Starts Dosimat at device 2 = Starts Dosimat at devices 1+2 = Switches pH meter to pH measurement = Switches pH meter to temp measurement = Switches pH meter to mV measurement = Switches pH meter to Ipol mode = Switches ion meter to Conc measurement = Switches pH meter to pH calibration Switches ion meter to Conc calibration = <ENTER> key for pH meter simulation = Initializes Remote interface any binary pattern with 14 bit

The CTL:Rm command is used for controlling external devices via the Remote interface. It sets defined line conditions or transmits impulses via the 14 Remote output lines.

Predefined binary patterns are available; these can be selected via simple names (e.g.

START device x starts the set mode of a connected Metrohm device. START Dos x starts a Dosimat which is connected with a Metrohm titra-

tor via the "activate" line (a special cable is required).

START device 1 or METER Mode pH).

METER xxx

switches to a particular measuring mode with 691, 713, 780 pH Meters and 692, 781 Ion Meters.

Sample ready can be used as a continue impulse, e.g. for a connected

Titrando.

Setting special binary patterns allows the flexible monitoring of connected instruments. The following applies

0 = line inactive 1 = line active ∗ = retain line condition

Example:

*************1 = Output line 0 active = start device 1

Details about the Remote interface can be found in the Technical Reference.

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3.4 Commands

CTRL

>sample sequence 10 CTL:RS

Rm,RS

default value: M;$G 14 ASCII characters

Data transmission via serial interface

= starts Metrohm instrument in current mode any character string with 14 characters

Data (=character strings) can be transmitted to connected devices via the serial RS232 interface.

Make sure that the transmission parameters of the RS232 interface are identical with those of the connected device (see configuration menu

>RS232 settings, p. 65).

Any letters, numbers and special characters can be selected from the character set of the Sample Processor.

This function is primarily suitable for instruments that understand the Metrohm Remote language. These can be controlled with so-called triggers.

The most important of these are:

&M;$G Go, starts instrument in current mode

&M;$S Stop, stops device

&M;$H Hold, interrupts determination

&M;$C Continue, restarts determination

Switching on the AutoInfo status messages (e.g. in a start sequence) can be carried out with the following Remote commands:

&Se.A.T.R"ON" Status message at "Ready" condition

&Se.A.T.F"ON" Status message at end of a determination

&Se.A.T.S"ON" Status message at manual Stop

&Se.A.T.G"ON" Status message at start of a method

&Se.A.T.E"ON" Status message at error condition

Logically the corresponding AutoInfo messages should be switched off again in a final sequence (

..."OFF").

Detailed information about the syntax of the Remote language can be found in the Technical Reference or in the Instructions for Use of your titrator.

For communication with instruments from other manufacturers or a computer please conform with their syntax and conventions.

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3.4 Commands

3.4.5 Auxiliary commands

WAIT

WAI T

>sample sequence 11 WAIT: pause 1 s

pause, runtime 0…1…9999

Waiting time

The WAIT command is used for setting a particular waiting time or for waiting until a particular time (run time) in a run sequence.

pause is selected then the method run will be interrupted for the en-

If tered duration (in seconds).

runtime is selected then the method run will be interrupted until the

If selected running time (seconds counter) has been reached. The running time (in seconds) always starts at the beginning of an individual sequence, i.e. start sequence, sample sequence or final sequence. If the running time of the sequence has already been reached or exceed when the WAIT command is executed then the method will be continued immediately.

RACK

>Sample sequence 12 RACK

The rack turns to the starting position, i.e. the lift (or both lifts) move upward to the rest position and the rack is rotated to the initial position. The rack code is read off and the SAMPLE variable (position of the current sample) reset to 1. The RACK command should only be used in a final sequence.

DEF

Redefinition of specific device settings

With the following DEF commands a wide range of settings can be modified during a method run. The individual entries are selected by repeatedly pressing the <DEF> key (selection drum).

>sample sequence 13 STIRRATE: T1 3

T1,T2,T*,

MSB1, MSB2, MSB3, MSB*, * 1…3…15

The stirring speed can be set individually for all stirrers. The first parameter stands for the connector of the stirrer, the second parameter allows the stirring speed to be set in 15 steps.

Initialize rack

Stirring rate

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3.4 Commands

>sample sequence 13 DOSRATE 1 160

1…3

0.01…160 mL/min

Dosing rate

The dosing rate can be set individually for all three dosing devices. The first parameter stands for the address (MSB1…3) of the dosing device, the second parameter allows the setting of the dosing rate in mL/min.

>sample sequence 13 FILLRATE 1 160

1…3

0.01…160 mL/min

Filling rate

The filling rate can be set individually for all three dosing devices. The first parameter stands for the address (MSB1…3)of the dosing device, the second parameter allows the setting of the filling rate in mL/min.

>sample sequence 13 COCKMOVE 1 : auto

1…3 auto,

not over, desc., asc.

Direction of rotation of the stopcock of a Dosing unit

The direction of rotation of the stopcock can be defined for each Dosino. Apart from the automatic selection (shortest path) a descending or ascending direction can also be selected.

Not over means that rotation

will never be carried out over the protected port (see Section 3.3.4).

>sample sequence 13 LIFTRATE 1 25 mm/s

1,2 5…25 mm/s

Lift rate

The lift speed can be set individually for both towers. The first parameter stands for the selection of the tower, the second parameter allows the setting of the lift speed in mm/s.

>sample sequence 13 SHIFTRATE: auto. 20

auto.,+,– 3…20 w/s

Direction and speed of rotation of the rack

Direction of rotation and speed of rotation of the sample rack can be altered as required. The first parameter determines the direction of rotation.

auto. : The Sample Processor automatically selects the shortest path. + : The rack rotates counterclockwise (to a higher rack position) – : The rack rotates clockwise (to a lower rack position)

The second parameter determines the speed of rotation in degrees/s.

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3.4 Commands

>sample sequence 13 SWINGRATE 1 55

1,2 10…55 °/s

Swing rate of a robotic arm

The swing rate of a robotic arm (786 Swing Head) can be set individually for both towers. The first parameter stands for the selection of the tower, the second parameter allows the swing rate to be set in degrees/s.

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3.5 Managing methods

USER METHOD

3.5.1 User-defined methods

Main menu:

methods >recall method

methods >store method methods >delete method

methods >recall method

Use <QUIT> to return

to normal operating

condition.

>recall method name: ********

8 ASCII characters

All the stored methods can be selected with <SELECT>. If an "empty" method is to be loaded then the method <CLEAR>. This deletes the current working memory for methods.

methods >store method

>store method name: ********

8 ASCII characters

The text input mode is activated with '<' or '>' in order to be able to enter your chosen method name (see p.

methods >delete method

>delete method name: ********

8 ASCII characters

>delete method delete ******** ?

Open submenu with <ENTER>

Use <> or <> up or down by one menu item

Use <HOME> or <END> to reach the first and last menu items

Open the dialog with <ENTER>

Select method

******** can be selected with

Open the dialog with <ENTER>

Define method name

55).

Open the dialog with <ENTER>

Select method

Confirm with <ENTER> Cancel with <QUIT>

Dialog for loading methods

Dialog for saving methods

Dialog for deleting methods

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3.5 Managing methods

3.5.2 POWERUP method

When the Sample Processor is switched on the sample rack and the lifts move to their initial positions. This means that electrodes may also be removed from the conditioning beaker. In order to re-immerse them in the conditioning beaker you can use the POWERUP method. This method is automatically started when the Sample Processor is switched on and the initialization of the instrument is finished.

Create a method which contains a command sequence that is to be processed when the Sample Processor is switched on. Save this method under the name POWERUP (see p.

87).

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3.6 Run control

With <START> you can start a method from the normal operating

START

STOP

condition. If no manual intervention is made, or if no unexpected error occurs, the sample series will be processed correctly and terminated with the final sequence. The sample sequence will be repeated several times in accordance with the entry made under

samples, starting with the sample beaker defined as SAMPLE.

External START (see configuration 3.2.1) is switched on then the ac-

If tivation of the Remote line Input 7 will also start the method.

If the sample series is halted with <STOP> then the Sample Processor will return directly to the normal operating condition. Unprocessed samples will not be taken into account and the final sequence will not be carried out. If under Manual stop settings have been defined for this case, then the corresponding actions or commands will be carried out, e.g. connected devices will be stopped.

external START (see configuration 3.2.1) is switched on then the ac-

If tivation of Remote line Input 6 will also stop the method.

<PARAM>, number of

LEARN

HOLD

QUIT

RESET

CLEAR

With <HOLD> the method run can be interrupted. The currently active command will be terminated immediately. With <START> the method can be continued with the following command in the active sequence. The connected peripheral devices will not be interrupted with the

<HOLD> key.

<QUIT> breaks off the command which is currently being executed

and starts the next command line in the sequence. If a fault occurs during a sample series an appropriate error message

will be shown; this must be confirmed with <QUIT>. The Sample Processor then returns to the HOLD status (see above). After the fault has been remedied the run can be continued with <START> or, if necessary, cancelled with <STOP>.

<CLEAR> interrupts a sample series after the currently active sequence has been carried out (gentle stop). The current sample will be processed to the end.

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3.7 Sample racks

A sample rack is a turntable that accommodates sample vessels and is placed on the Sample Processor. In order to be able to process different shapes and sizes of sample vessels various types of sample rack can be used and easily exchanged. The number of samples that a rack can accommodate depends on the diameter of the sample beakers.

• Sample racks 42 cm diameter can be used with all Sample Proces- sor models. With the 789 Robotic Sample Processor XL models a 786 Swing Head with robotic arm is required.

• Sample racks 48 cm diameter are only suitable for the 789 Robotic Sample Processor XL models with 786 Swing Head and robotic arm.

3.7.1 Metrohm standard sample racks

Racks 42 cm diameter

Article no. / Rack type

No. of samples

Type of sample vessel Vessel

diameter

Magnet code (predefined)

6.2041.310 12 250 mL Metrohm titration beaker 65 mm 000001

6.2041.320 16 150 mL beaker 55 mm 000010

6.2041.340 24 75 mL Metrohm titration beaker 35 mm 001000

6.2041.350 48 *) 75 mL Metrohm titration beaker 35 mm 010000

6.2041.360 12 150 mL beaker or 200 mL disposable beaker

6.2041.370 14 200 mL disposable beaker 55 mm 000011

6.2041.380 14 8 oz disposable beaker 59 mm 000101

6.2041.400 126+2 *) 11 mL test tube 250 mL Metrohm titration beaker

6.2041.410 141+1 *) 11 mL test tube 500 mL beaker

6.2041.430 127+2 *) 11 mL test tube 2x 300 mL beaker

6.2041.440 148+3 *) 11 mL test tube 3x 300 mL beaker

6.2041.460 21 100 mL CSB tubes 43 mm 101000

6.2041.710 160 6 mL vials 22 mm 000111

55 mm 100000

16 mm 65 mm

16 mm 71 mm

16 mm 68 mm

001010

010001

010100

*) can only be used with 786 Swing Head

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3.7 Sample racks

Racks 48 cm diameter (for 789 XL models only)

Article no. / Rack type

No. of samples

Type of sample vessel Vessel

diameter

Magnet code (predefined)

6.2041.800 100 *) 75 mL Metrohm titration beaker 35 mm 000100

6.2041.810 34 *) 150 mL beaker or

55 mm 001001

200 mL disposable beaker (Euro)

6.2041.820 28 *) 250 mL Metrohm titration beaker 65 mm 010010

6.2041.830 28 *) 200 mL PP sample beaker 55 mm 100010

6.2041.840 59 *) 120 mL PP sample beaker 42 mm 001100

*) can only be used with 786 Swing Head

On request we can supply further user-defined racks that can be defined in the instrument via PC software. The beaker positions can be arranged as required.

3.7.2 Magnet codes

Each individual sample rack can be identified unambiguously by a magnet code. Magnet pins attached to the base of the rack (see can be arranged to form a 6-place binary code. The Sample Processor can then automatically recognize which rack has been placed on it if the rack is located at the starting position after initialization.

Fig. 5)

When a rack is changed it should first be brought to the starting position by pressing the <RACK> key. In this way the rack can be posi- tively recognized, which makes correct beaker positioning possible. Each type of rack is assigned to an internal position table, in which the angle of rotation and distance to the center of the rack is defined for each rack position.

When a sample series is started the Sample Processor automatically moves the rack to the starting position so that its magnet code can be read off. This ensures that the beaker positions coincide with the internal position table of the current rack.

The standard racks supplied by Metrohm are already provided with a predefined magnet code for each type of rack. If several racks of the same type are in use then the magnet pins can be arranged differently to allow the unambiguous identification of each individual rack.

Magnet code format (examples):

000001 i.e. only one magnet inserted, Bit 0 000101 i.e. two magnets inserted, Bit 0 and 2

63 different combinations are possible. Code 000000 stands for "no defined code".

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3.7 Sample racks

3.7.3 Rack data

In many applications the method and beaker sizes must be observed exactly. As sample racks are intended for particular beaker sizes, the rack definitions also contain, in addition to the rack positions themselves, data about the lift positions that are directly associated with the particular beaker size.

The following data can be defined for each rack:

Rack name Unambiguous identification, ordering

number is standard

Code Magnet code for automatic rack rec-

ognition

Work position Working height for Lift 1 and 2

Rinse position Rinsing height for Lift 1 and 2

Shift position Shifting height for Lift 1 and 2

Special position Additional height for Lift 1 and 2

Beaker radius Radius of sample beaker

Beaker sensor Beaker checking mode

Special beaker positions 16 reserved rack positions with individ-

ual working heights, beaker radius and beaker sensor test

can be set for both towers separately

The rack name is used for the unambiguous identification of a rack. The standard name stored for the rack is the ordering number. In a method, this can be assigned to a particular rack name (see Sec-

3.3.1). The automatic rack recognition ensures that if an incorrect

tion rack is used this will be recognized and the user will be informed of this.

The code is used for automatic rack recognition. You must make sure that this 6-place binary code coincides with the actual magnet code set on the rack. Rack codes can be altered as required. However, they must always be assigned to a single rack only. Avoid the use of the predefined codes for the standard racks supplied by Metrohm, see also

90.

The working position is used for defining the lift position at which a sample is to be processed. This means that the ideal setting for a particular sample rack can be defined depending on the height of the sample beakers. In manual operation this working position can be moved to directly with the <END> key. In a run sequence this can be programmed with

LIFT :1 : work mm.

92 Metrohm Sample Processor, Operation

Metrohm 789 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Introduction

1.1 Instrument description

1.1.1 Field of application of the Metrohm Sample Processors

1.1.2 Instrument versions

1.2 Sample Processors as part of a system

1.3 Information about these Instructions for Use

1.3.1 Please note

1.3.2 Additional documents

1.3.3 Notation and pictograms

1.4 Parts and controls

1.4.1 Overall view

1.4.2 Rear view

1.5 Connections

1.5.1 Sensors of the Sample Processor

1.6 Accessories

1.7 The keypad

1.7.1 The display

1.7.2 The keys

1.8 Safety information

1.8.1 General:

1.8.2 Electrical safety

1.8.3 Personal protection

2 Installation

2.1 Installation flow chart

2.2 Instrument setup

2.2.1 Setup

2.2.2 Mains connection

2.2.3 Connecting the keypad

2.2.4 Mounting a 786 Swing Head

2.2.5 Mounting the robotic arm

2.2.6 Connecting pumps

2.2.7 Connecting dosing devices and stirrers

2.3 Data transmission connections

2.3.1 Remote connections

2.3.2 Serial connections (RS232)

2.3.3 Connecting a printer

2.4 Connecting up accessories

2.4.1 Connecting rinsing and aspiration equipment

2.4.2 Attaching the tubing

2.4.3 Installing the titration accessories

2.4.4 Assembling pipetting accessories

2.4.5 Installing a double-hollow needle

2.4.6 Spray nozzles

2.4.7 Magnetic stirrer

2.4.8 Mounting the stand support

2.4.9 Installing the collection trough

2.4.10 Sample racks

2.4.11 Mounting the safety shield

2.5 Start-up

3 Operation

3.1 Operating principles

3.1.1 Display

3.1.2 Instrument dialog

3.1.3 Data input

3.1.4 Text input

3.2 Configuration

3.2.1 Miscellaneous

3.2.2 Tower settings

3.2.3 Rack definitions

3.2.4 Dosing units

3.2.5 RS232 settings

3.3 Composition of a method

3.3.1 Run sequences and method parameters

3.3.2 Sample Processor settings

3.3.3 Stirrer settings

3.3.4 Dosing device settings

3.3.5 Behavior during timeout

3.3.6 Manual stop settings

3.4 Commands

3.4.1 Sample Processor commands

3.4.2 Switching components

3.4.3 Dosing device control

3.4.4 Communication commands

3.4.5 Auxiliary commands

3.5 Managing methods

3.5.1 User-defined methods