Metrohm 862 User Manual
862 Compact Titrosampler
Manual
8.862.8002EN
Metrohm AG
CH-9101 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
info@metrohm.com
www.metrohm.com
862 Compact Titrosampler
Manual
8.862.8002EN 10/2009 dm/jb
Teachware
Metrohm AG
CH-9101 Herisau
teachware@metrohm.com
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been
checked with great care, errors cannot be entirely excluded. Should you
notice any mistakes please send us your comments using the address
given above.
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Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.1.1 Instrument components .......................................................... 1
1.1.2 Titration and measuring modes ................................................ 2
1.1.3 Intended use ........................................................................... 2
1.2 About the documentation ................................................... 3
1.2.1 Symbols and conventions ........................................................ 3
1.3 Safety instructions ................................................................ 4
1.3.1 General notes on safety ........................................................... 4
1.3.2 Electrical safety ........................................................................ 4
1.3.3 Tubing and capillary connections ............................................. 5
1.3.4 Personnel safety ...................................................................... 5
1.3.5 Flammable solvents and chemicals ........................................... 7
1.3.6 Recycling and disposal ............................................................. 7
Table of contents
2 Overview of the instrument 8
3 Installation 10
3.1 Setting up the instrument .................................................. 10
3.1.1 Packaging .............................................................................. 10
3.1.2 Checks .................................................................................. 10
3.1.3 Location ................................................................................ 10
3.2 Removing the safety shield and cable cover .................... 11
3.3 Mounting the Dosino ......................................................... 11
3.4 Connecting the Dosino ....................................................... 13
3.5 Setting up the titration head ............................................. 14
3.6 Connecting a stirrer ............................................................ 17
3.7 Connecting keyboard, printer and other USB devices .... 18
3.8 Connecting a balance ......................................................... 20
3.9 Connecting a sensor ........................................................... 21
3.10 Remote connections ........................................................... 23
3.10.1 Miscellaneous remote cables ................................................. 23
3.10.2 Example systems .................................................................... 24
4 Titration and automation sequences 28
862 Compact Titrosampler
3.11 Mounting the cable cover and the safety shield ............. 26
3.12 Connecting the mains cable .............................................. 27
4.1 Dynamic equivalence point titration (DET) ....................... 28
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III
Table of contents
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4.2 Monotonic equivalence point titration (MET) .................. 28
4.3 Endpoint titration (SET) ..................................................... 29
4.4 Automation sequences ...................................................... 29
4.4.1 Dipping in special .................................................................. 29
4.4.2 Dipping in special 2 ............................................................... 30
4.4.3 Double dipping ...................................................................... 31
4.4.4 Rinsing in sample ................................................................... 32
4.4.5 Rinsing in special ................................................................... 32
4.4.6 Pump control ......................................................................... 33
4.4.7 Dosing auxiliary solutions ....................................................... 34
5 Operation 35
5.1 Switching the instrument on and off ............................... 35
5.2 Fundamentals of operation ............................................... 36
5.2.1 The keypad ............................................................................ 36
5.2.2 Structure of the dialog windows ............................................ 37
5.2.3 Navigating in the dialog ......................................................... 37
5.2.4 Entering text and numbers ..................................................... 38
5.2.5 Selecting from a selection list ................................................. 39
5.3 Formula editor .................................................................... 39
5.4 Methods .............................................................................. 41
5.4.1 Creating a new method ......................................................... 41
5.4.2 Saving a method ................................................................... 42
5.4.3 Loading a method ................................................................. 43
5.4.4 Exporting a method ............................................................... 44
5.5 Sample data ........................................................................ 45
5.5.1 Sample table ......................................................................... 45
5.5.2 Entering sample data in the main dialog ................................ 48
5.6 Performing a sample series ............................................... 49
5.6.1 Starting the sample series ...................................................... 49
5.6.2 Pausing a sample series and continuing ................................. 50
5.6.3 Status of the sample series ..................................................... 52
5.6.4 Special case: Calibrations ....................................................... 52
5.7 Live modifications .............................................................. 53
5.7.1 Editing the sample data of the running determination ............ 53
5.7.2 Editing the sample table while a determination is running ...... 54
5.7.3 Live parameters ..................................................................... 55
5.8 Results ................................................................................. 56
5.9 Statistics .............................................................................. 58
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IV
5.10 Printing a report manually ................................................. 59
5.11 Manual control ................................................................... 61
5.11.1 Rotating the sample rack ....................................................... 61
5.11.2 Moving the lift ....................................................................... 62
5.11.3 Dosing ................................................................................... 62
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6 System settings 69
Table of contents
5.11.4 Measuring ............................................................................. 66
5.11.5 Stirring .................................................................................. 67
6.1 Basic settings ...................................................................... 69
6.2 Lift settings (Lift) ................................................................ 72
6.3 Managing sensors .............................................................. 73
6.3.1 General ................................................................................. 73
6.3.2 Editing the sensor data .......................................................... 74
6.4 Managing solutions ............................................................ 75
6.4.1 General ................................................................................. 75
6.4.2 Editing the solution data ........................................................ 76
6.5 Managing common variables ............................................ 77
6.5.1 General ................................................................................. 77
6.5.2 Editing common variables ...................................................... 78
6.6 File management ................................................................ 79
6.7 Configuring external devices ............................................. 80
6.8 Instrument diagnosis .......................................................... 83
6.8.1 Loading program versions and language files ......................... 83
6.8.2 Diagnosis functions ............................................................... 84
7 Parameters 85
7.1 Dynamic equivalence point titrations (DET) ..................... 85
7.1.1 Start conditions ..................................................................... 85
7.1.2 Titration parameters .............................................................. 86
7.1.3 Stop conditions ..................................................................... 91
7.1.4 Evaluation ............................................................................. 93
7.1.5 Calculation ............................................................................ 96
7.1.6 Statistics ................................................................................ 98
7.1.7 Reports .................................................................................. 98
7.2 Monotonic equivalence point titrations (MET) .............. 100
7.2.1 Start conditions ................................................................... 100
7.2.2 Titration parameters ............................................................ 101
7.2.3 Stop conditions ................................................................... 106
7.2.4 Evaluation ........................................................................... 107
7.2.5 Calculation .......................................................................... 110
7.2.6 Statistics .............................................................................. 112
7.2.7 Reports ................................................................................ 112
862 Compact Titrosampler
7.3 Endpoint titrations (SET) .................................................. 114
7.3.1 Conditioning ....................................................................... 114
7.3.2 Start conditions ................................................................... 115
7.3.3 Titration parameters ............................................................ 117
7.3.4 Control parameters EP1 ....................................................... 119
7.3.5 Control parameters EP2 ....................................................... 122
7.3.6 Stop conditions ................................................................... 122
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V
Table of contents
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7.3.7 Calculation .......................................................................... 123
7.3.8 Statistics .............................................................................. 125
7.3.9 Reports ................................................................................ 125
7.4 pH calibration (CAL) ......................................................... 127
7.4.1 Calibration parameters ........................................................ 127
7.4.2 Buffers ................................................................................ 128
7.4.3 Reports ................................................................................ 129
7.5 Automation: Dipping in special ....................................... 130
7.6 Automation: Dipping in special 2 ................................... 131
7.7 Automation: Double dipping ........................................... 132
7.8 Automation: Rinsing in sample ....................................... 133
7.9 Automation: Rinsing in special ....................................... 134
8 Handling and maintenance 135
8.1 General .............................................................................. 135
8.2 Quality Management and validation with Metrohm .... 135
9 Troubleshooting 137
9.1 SET titration ...................................................................... 137
9.2 Miscellaneous ................................................................... 138
10 Appendix 139
10.1 Dosing unit ........................................................................ 139
10.1.1 Maximum dosing and filling rate .......................................... 139
10.1.2 Parameters for preparing (PREP) and emptying (EMPTY) ....... 139
10.2 Stirring rate ....................................................................... 140
10.3 Balance .............................................................................. 140
10.4 USB devices ....................................................................... 141
10.4.1 Numerical USB keypad 6.2147.000 ...................................... 141
10.4.2 Key assignment of a USB keyboard ...................................... 142
10.4.3 PC mouse ............................................................................ 142
10.4.4 Printer ................................................................................. 143
10.5 System initialization ......................................................... 143
10.6 Remote interface .............................................................. 145
10.6.1 Pin assignment of the remote interface ................................ 145
10.6.2 Status diagram of the remote interface ................................ 146
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VI
11 Technical specifications 147
11.1 Measuring inputs .............................................................. 147
11.1.1 Potentiometry ...................................................................... 147
11.1.2 Polarizer .............................................................................. 147
11.1.3 Temperature ........................................................................ 148
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12 Conformity and warranty 152
Table of contents
11.2 Dosing drive ...................................................................... 149
11.3 Lift ..................................................................................... 149
11.4 Turntable ........................................................................... 149
11.5 Interfaces and connectors ............................................... 149
11.6 Mains connection ............................................................. 150
11.7 Safety specifications ........................................................ 150
11.8 Electromagnetic compatibility (EMC) ............................. 150
11.9 Ambient temperature ...................................................... 151
11.10 Reference conditions ........................................................ 151
11.11 Dimensions ........................................................................ 151
12.1 Declaration of Conformity ............................................... 152
12.2 Warranty (guarantee) ....................................................... 153
12.3 Quality Management Principles ...................................... 154
13 Accessories 156
13.1 Scope of delivery 2.862.0010 ......................................... 156
13.2 Optional accessories ........................................................ 160
Index 163
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VII
Table of figures
Table of figures
Figure 1 Front 862 Compact Titrosampler ....................................................... 8
Figure 2 Rear 862 Compact Titrosampler ........................................................ 9
Figure 3 Removing shields ............................................................................. 11
Figure 4 Mounting the Dosino ...................................................................... 12
Figure 5 Connecting the Dosino .................................................................... 13
Figure 6 Equip the titration head ................................................................... 14
Figure 7 Installing rinsing nozzles and aspiration tip ...................................... 15
Figure 8 Setting up the distributor ................................................................. 16
Figure 9 Rod stirrer 802 Stirrer ...................................................................... 17
Figure 10 Connecting a stirrer ......................................................................... 17
Figure 11 Connecting USB devices ................................................................. 18
Figure 12 Connecting the USB stick ................................................................ 19
Figure 13 Connecting the 6.2147.000 USB keyboard with USB stick and
printer ............................................................................................. 20
Figure 14 Connecting the USB hub with USB stick, printer and the 6.2148.030
RS-232/USB Box (for connecting balances). ..................................... 20
Figure 15 Connecting a balance ...................................................................... 20
Figure 16 Connecting pH or redox electrodes ................................................. 21
Figure 17 Connecting a reference electrode .................................................... 22
Figure 18 Connecting a temperature sensor .................................................... 22
Figure 19 Connecting a polarizable electrode .................................................. 23
Figure 20 Remote cable with lettering ............................................................. 24
Figure 21 Remote connection 862 Compact Titrosampler - 843 Pump Station -
Dosimat plus ................................................................................... 24
Figure 22 Remote connection 862 Compact Titrosampler - Dosimat ............... 25
Figure 23 Mounting the shields ....................................................................... 26
Figure 24 Connecting the mains cable ............................................................ 27
Figure 25 Reagent dosing for DET ................................................................... 28
Figure 26 Reagent dosing for MET .................................................................. 28
Figure 27 Reagent dosing for SET ................................................................... 29
Figure 28 Keypad 862 Compact Titrosampler .................................................. 36
Figure 29 Directory structure on the USB stick ................................................. 80
Figure 30 Tubbs method for determining the equivalence point ...................... 96
Figure 31 Rotational speed depending on stirring rate .................................. 140
Figure 32 Pin assignment of remote socket and plug .................................... 145
Figure 33 Remote status diagram .................................................................. 146
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VIII
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862 Compact Titrosampler
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1 Introduction
1.1 Instrument description
The 862 Compact Titrosampler is a versatile analysis instrument which
combines a titrator and a compact sample changer in a single unit. It is
the central control instrument in an automation system that can also
include, in addition to a Dosimat (for adding auxiliary solutions), a pump
for rinsing and aspirating the sample vessels.
Given automation sequences and titration modes can be individually parameterized and saved as sample-specific methods. Methods can be exported on a USB stick and then copied onto another instrument quickly and
easily.
1.1.1 Instrument components
The 862 Compact Titrosampler has the following components:
1 Introduction
￭ Turntable
Permanently mounted sample rack with 11 positions for sample beakers and one position for a rinsing beaker.
￭ Lift with titration head
For two electrodes, one rod stirrer, two dosing tips, one aspiration tip
and three rinsing nozzles.
￭ Sensor connectors
Four connectors for the following sensor types:
– pH or redox electrodes
– reference electrodes
– polarizable electrodes
– temperature sensors (Pt1000 or NTC)
￭ Stirrer connector
For a rod stirrer with propeller stirrer.
￭ MSB connector (Metrohm Serial Bus)
For connecting a Dosino.
￭ USB (OTG) connector
The 6.2151.100 adapter can be used to connect, for example, a USB
hub or a USB stick (for system backup or method export).
￭ Remote connector
For connecting a Dosimat and/or an 843 Pump Station as well as other
instruments with a remote interface.
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1
1.1 Instrument description
1.1.2 Titration and measuring modes
The following titration and measuring modes are supported:
￭ DET
Dynamic equivalence point titration. The reagent is added in variable
volume steps.
Measuring modes:
– pH (potentiometric pH measurement)
– U (potentiometric voltage measurement)
– Ipol (voltametric measurement with adjustable polarization cur-
rent)
– Upol (amperometric measurement with adjustable polarization
voltage)
￭ MET
Monotonic equivalence point titration. The reagent is added in con-
stant volume steps.
Measuring modes:
– pH (potentiometric pH measurement)
– U (potentiometric voltage measurement)
– Ipol (voltametric measurement with adjustable polarization cur-
rent)
– Upol (amperometric measurement with adjustable polarization
voltage)
￭ SET
Endpoint titration at one or two specified endpoints.
Measuring modes:
– pH (potentiometric pH measurement)
– U (potentiometric voltage measurement)
– Ipol (voltametric measurement with adjustable polarization cur-
rent)
– Upol (amperometric measurement with adjustable polarization
voltage)
￭ CAL
Electrode calibration.
Measuring mode:
– pH (calibration of pH electrodes)
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1.1.3 Intended use
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2
The 862 Compact Titrosampler is designed for usage as an automation
system in analytical laboratories. It is not suitable for usage in biochemical, biological or medical environments in its basic equipment version.
This instrument is suitable for dosing chemicals and flammable solvents.
The usage of the 862 Compact Titrosampler therefore requires that the
user has basic knowledge and experience in the handling of toxic and
caustic substances. Knowledge with respect to the application of the fire
862 Compact Titrosampler
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prevention measures prescribed for laboratories or production plants is
also mandatory.
1.2 About the documentation
Caution
Please read through this documentation carefully before putting the
instrument into operation. The documentation contains information
and warnings which have to be followed by the user in order to ensure
safe operation of the instrument.
1.2.1 Symbols and conventions
The following symbols and styles are used in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the
second to the instrument part in the figure.
1 Introduction
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New
[Next] Button or key
Menu or menu item
Warning
This symbol draws attention to a possible life hazard
or risk of injury.
Warning
This symbol draws attention to a possible hazard due
to electrical current.
Warning
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
Warning
This symbol draws attention to a possible biological
hazard.
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3
1.3 Safety instructions
1.3 Safety instructions
1.3.1 General notes on safety
Warning
This instrument may only be operated in accordance with the specifications in this documentation.
This instrument has left the factory in a flawless state in terms of technical
safety. To maintain this state and ensure non-hazardous operation of the
instrument, the following instructions must be observed carefully.
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Caution
This symbol draws attention to a possible damage of
instruments or instrument parts.
Note
This symbol marks additional information and tips.
1.3.2 Electrical safety
The electrical safety when working with the instrument is ensured as part
of the international standard IEC 61010.
Only personnel qualified by Metrohm are authorized to carry out service
work on electronic components.
Never open the housing of the instrument. The instrument could be
damaged by this. There is also a risk of serious injury if live components
are touched.
There are no parts inside the housing which can be serviced or replaced
by the user.
Warning
Warning
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4
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1 Introduction
Mains voltage
Warning
An incorrect mains voltage can damage the instrument.
Only operate this instrument with a mains voltage specified for it (see
rear panel of the instrument).
Protection against electrostatic charges
Warning
Electronic components are sensitive to electrostatic charges and can be
destroyed by discharges.
Always pull the mains cable out of the mains connection socket before
connecting or disconnecting electrical appliances on the rear panel of
the instrument.
1.3.3 Tubing and capillary connections
Caution
Leaks in tubing and capillary connections are a safety risk. Tighten all
connections well by hand. Avoid applying excessive force to tubing
connections. Damaged tubing ends lead to leakage. Appropriate tools
can be used to loosen connections.
Check the connections regularly for leakage. If the instrument is used
mainly in unattended operation, then weekly inspections are mandatory.
1.3.4 Personnel safety
Warning
Wear protective goggles and working clothes suitable for laboratory
work while operating the 862 Compact Titrosampler. It is also advisable
to wear gloves when caustic liquids are used or in situations where
glass vessels could break.
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5
1.3 Safety instructions
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Warning
Always install the safety shield supplied with the equipment before
using the instrument for the first time. Pre-installed safety shields are
not allowed to be removed.
The 862 Compact Titrosampler may not be operated without a safety
shield!
Warning
Personnel are not permitted to reach into the working area of the
instrument while operations are running!
A considerable risk of injury exists for the user.
Warning
In the event of a possible blockage of a drive, the mains plug must be
pulled out of the socket immediately. Do not attempt to free jammed
sample vessels or other parts while the device is switched on. Blockages
can only be cleared when the instrument is in a voltage-free status; this
action generally involves a considerable risk of injury.
Warning
The 862 Compact Titrosampler is not suitable for utilization in biochemical, biological or medical environments in its basic equipment version.
Appropriate protective measures must be implemented in the event
that potentially infectious samples or reagents are being processed.
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6
862 Compact Titrosampler
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1.3.5 Flammable solvents and chemicals
Warning
All relevant safety measures are to be observed when working with
flammable solvents and chemicals.
￭ Set up the instrument in a well-ventilated location.
￭ Keep all sources of flame far from the workplace.
￭ Clean up spilled fluids and solids immediately.
￭ Follow the safety instructions of the chemical manufacturer.
1.3.6 Recycling and disposal
This product is covered by European Directive 2002/96/EC, WEEE – Waste
from Electrical and Electronic Equipment.
The correct disposal of your old equipment will help to prevent negative
effects on the environment and public health.
1 Introduction
More details about the disposal of your old equipment can be obtained
from your local authorities, from waste disposal companies or from your
local dealer.
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7
2 Overview of the instrument
1
2
3
4
5
6
7
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Figure 1 Front 862 Compact Titrosampler
Safety shield (6.2751.130)
1
With knurled screws for mounting. The
safety shield can be folded up.
Sample rack
3
For 11 sample beakers and one rinsing
beaker (6.1459.300, 120 mL)
Keypad
5
Special position
7
For a rinsing beaker
Titration head
2
With two retracted dosing tips and four
stoppers.
Display
4
Dosino holder (6.2057.110)
6
For fixing the dosing drive and the titrant
bottle (1 L).
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8
862 Compact Titrosampler
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1
2
3 4 5 6 7 8 9 10 11 12
2 Overview of the instrument
Figure 2 Rear 862 Compact Titrosampler
Warning symbol
1
(see Chapter 1.3.4, page 5)
Electrode connector (Ind.)
3
For connecting pH or redox electrodes with
integrated or separate reference electrode.
Socket F.
Temperature sensor connector
5
For connecting temperature sensors of the
Pt1000 or NTC types. Two B sockets, 2 mm.
Remote connector
7
For connecting instruments with a remote
interface. D-Sub, 9-pin.
USB (OTG) connector
9
For connecting printers, USB sticks, USB
hubs, etc.
Mains connection socket
11
Tubing and cable cover
2
Electrode connector (Ref.)
4
For connecting reference electrodes. Socket
B, 4 mm.
Electrode connector (Pol.)
6
For connecting polarizable electrodes, e g.
double Pt electrodes. Socket F.
MSB connector
8
Metrohm Serial Bus.
For connecting the 800 Dosino. Mini DIN,
9-pin.
Stirrer connection
10
For 802 Stirrer (rod stirrer).
Type plate
12
Contains specifications concerning mains
voltage and serial number.
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9
3.1 Setting up the instrument
3 Installation
3.1 Setting up the instrument
3.1.1 Packaging
The instrument is supplied in highly protective special packaging together
with the separately packed accessories. Keep this packaging, as only this
ensures safe transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived complete and without damage by comparing it with the delivery note.
3.1.3 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
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Place the instrument in a location of the laboratory which is suitable for
operation, free of vibrations, protected from corrosive atmosphere, and
contamination by chemicals.
The instrument should be protected against excessive temperature fluctuations and direct sunlight.
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10
862 Compact Titrosampler
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1
1
2
3.2 Removing the safety shield and cable cover
Figure 3 Removing shields
3 Installation
If you remove the safety shield and the cable cover before, the installation
of the accessories is easier to carry out. Proceed as follows:
Loosen the knurled screws on the sides of the tower and remove the
1
safety shield.
Loosen the knurled screws on the rear of the tower and remove the
2
cable cover.
Do not forget to refasten these two shields after the installation of the
accessories.
3.3 Mounting the Dosino
The 800 Dosino is used for adding titrant. The titrant bottle can be placed
next to the tower of the 862 Compact Titrosampler.
862 Compact Titrosampler
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11
3.3 Mounting the Dosino
1
2
3
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Figure 4 Mounting the Dosino
1
Attach the dosing unit
Connect the filling tubing to port 2 on the underside of the dosing
unit and screw the dosing unit onto the titrant bottle.
2
Place the titrant bottle
Open the bracket on the right-hand side of the tower with the aid of
the knurled screw. Place the titrant bottle with the dosing unit on the
support surface. Fix the bottle with the bracket and fasten the
knurled screw.
3
Attach the dosing drive
Insert the 800 Dosino with the guide pins into the openings on the
upper side of the dosing unit. Fix the 800 Dosino with a rotation to
the left. Note the markings.
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12
862 Compact Titrosampler
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3.4 Connecting the Dosino
Connect the Dosino to the MSB socket on the rear of the instrument. The
Dosino is automatically recognized when switching on the instrument.
Figure 5 Connecting the Dosino
Caution
3 Installation
Make sure that the flat side of the plug matches the marking on the
socket.
862 Compact Titrosampler
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13
3.5 Setting up the titration head
2.802.0010
6.1909.050
6.1805.xxx
6.2104.020
6.02/04xx.xxx
1
2
3
4
5
3.5 Setting up the titration head
Equipping the titration head without rinsing equipment
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Figure 6 Equip the titration head
Insert the rod stirrer (802 Stirrer) from above into the rear opening of
1
the titration head.
Guide the 6.1909.050 stirring propeller over the drive shaft of the
2
rod stirrer from below and press firmly.
Insert an electrode into the left-hand opening of the titration head.
3
Connect a 6.2104.020 electrode cable to the electrode. Connect the
4
other end to the electrode connector Ind. (see "Connecting pH or
redox electrodes", page 21).
Manually screw the enclosed 6.1805.100 FEP tubing to the dosing
5
tip mounted on the titration head. Connect the other end of the tubing to the dosing unit on the Dosino.
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14
862 Compact Titrosampler
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6.1805.420
6.2740.020
6.1805.200
6.1543.170
1
2
3
4
3 Installation
The remaining openings of the titration head can be sealed with the
enclosed stoppers provided.
Equipping the titration head with rinsing equipment
An 843 Pump Station (with two pumps) can be used when the sample
processing requires the rinsing of the electrodes and the aspiration of the
processed sample solution. The 843 Pump Station is available as model
version with complete rinsing and aspiration equipment. The rinsing and
aspiration equipment is installed as follows:
Figure 7 Installing rinsing nozzles and aspiration tip
Insert the three 6.2740.020 spray nozzles into the titration head
1
according to the illustration. The position of the individual spray nozzles can also be adjusted as required in terms of height.
Manually screw the three 6.1805.420 FEP tubings (with M6 thread)
2
firmly to the spray nozzles.
Insert the 6.1543.120 aspiration tip into the front opening of the
3
titration head. It can be adjusted in terms of height and its tip can be
cut as required to the necessary length.
Manually screw the 6.1805.200 aspiration tubing (with M8 thread)
4
firmly to the aspiration tip.
862 Compact Titrosampler
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15
3.5 Setting up the titration head
6.1805.420
6.1812.000
6.1805.200
6.1808.240
4
1
2
3
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Setting up the distributor
The 6.1818.240 distributor must be mounted on the rear side of the
tower for complete installation of the rinsing and aspiration equipment. It
is supplied with the 843 Pump Station.
First loosen the knurled screws of the cable and tubing cover and then
remove it. Proceed as follows:
Figure 8 Setting up the distributor
￭ Loosen both union nuts on the distributor and guide each of
1
them over the end of one 6.1812.000 PTFE tubing.
￭ Fasten the tubing ends to the distributor and fix in place with the
union nuts.
￭ Connect the free tubing ends with a disposal or rinsing canister.
Manually screw the 6.1805.420 rinsing tubings already mounted on
2
the titration head firmly into the openings with M6 threaded bores
on the distributor.
Manually screw the 6.1805.200 aspiration tubing with M8 thread
3
firmly into the remaining opening on the distributor.
Loosen the two screws on the rear panel of the instrument with a
4
hexagon key and use it to screw the distributor firmly.
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16
Note
Enclosed with the 862 Compact Titrosampler is the 6.1815.010
spiral band. You can wrap cables and tubings with it. This will
ensure that the cables and tubings are arranged in an organized
manner.
862 Compact Titrosampler
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Use the four knurled screws to remount the cable and tubing cover.
5
Caution
Close the safety shield again after the titration head has been equipped.
The 862 Compact Titrosampler is not permitted to be operated unless
the safety shield is correctly mounted.
3.6 Connecting a stirrer
A DIN socket for connecting a rod stirrer 802 Stirrer is located on the
rear of the instrument.
Figure 9 Rod stirrer 802 Stirrer
Take care to observe correct orientation of the contact pins when plugging in the connection cable. The rib on the outside of the plug must
match the reference mark (above) on the socket.
3 Installation
862 Compact Titrosampler
Figure 10 Connecting a stirrer
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17
3.7 Connecting keyboard, printer and other USB devices
6.2151.100
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3.7 Connecting keyboard, printer and other USB devices
The 862 Compact Titrosampler has a USB (OTG) connector. Use the provided 6.2151.100 adapter USB MINI (OTG) - USB A for connecting USB
devices as e.g. printers, keyboards or USB sticks, see the following figure.
Figure 11 Connecting USB devices
Caution
Switch the instrument off before connecting or disconnecting a USB
device or a USB stick.
The 862 Compact Titrosampler can recognize the device immediately
after switching on.
The following devices can directly be operated on the USB connector
with the 6.2151.100 adapter:
￭ USB sticks (for the backup or storing of methods)
￭ 6.2147.000 numerical USB keypad
￭ USB hub (with or without an own power supply)
The 6.2147.000 numerical USB keypad serves for comfortable numerical input and for navigating in the dialog. In addition, it provides two USB
connectors. Connect additional USB devices to the keypad.
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18
862 Compact Titrosampler
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USB MINI (OTG)-USB
USB stick
6.2151.100
3 Installation
Note
Most of the USB devices need a so-called hub in order to work correctly.
A USB hub is a distributor to which several USB devices can be connected. USB hubs are available in specialty stores in a number of different
models.
The USB (OTG) connector of the 862 Compact Titrosampler has no such
hub. The 6.2147.000 numerical USB keypad has a USB hub and two
USB connectors.
The following devices can only be connected to a 6.2147.000
numerical keypad or to a USB hub:
￭ Printer (with USB connector, use the 6.2151.020 connecting cable)
￭ Barcode reader (with USB cable)
￭ Mouse (PC mouse with USB cable, for navigating in the dialog)
The following devices can only be connected to a USB hub:
￭ PC keyboard (with USB cable, for the comfortable input of letters and
numbers)
￭ Keypad with numerical keypad (with USB cable)
If you wish to connect a variety of instruments without own power
supply, then you must possibly use a USB hub with own power supply
(self powered). The USB (OTG) connector of the 862 Compact Titrosampler is not designed for supplying power to several devices with elevated
electricity requirements.
Examples:
Figure 12 Connecting the USB stick
862 Compact Titrosampler
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19
3.8 Connecting a balance
USB MINI (OTG)-USB
USB stick
Keypad
6.2147.000
6.2151.100
Printer
USB MINI (OTG)-USB
USB stick
USB-Hub
RS-232/USB Box
6.2148.030
6.2151.100
Printer
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Figure 13 Connecting the 6.2147.000 USB keyboard with USB stick and
printer
3.8 Connecting a balance
Figure 14 Connecting the USB hub with USB stick, printer and the
6.2148.030 RS-232/USB Box (for connecting balances).
Balances are equipped with a serial RS-232 interface as a rule. To connect
a balance, you require a 6.2148.030 RS-232/USB Box.
Figure 15 Connecting a balance
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20
862 Compact Titrosampler
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