Teachware
Metrohm AG
CH-9100 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.
Documentation in additional languages can be found on
http://documents.metrohm.com.
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Table of contents
1Introduction 1
1.1pH Module system ................................................................ 1
Figure 16Connecting the iConnect ................................................................. 25
Figure 17Connecting an electrode to the iConnect ........................................ 25
Figure 18Connectors of the Remote Box ........................................................ 30
Figure 19Pin assignment of remote socket and remote plug .......................... 30
Table of figures
867 pH Module
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V
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MSB
Controller
PC Keyboard
Barcode
Reader
USB/RS-232 Converter
Touch Control
USB Sample Processor
Robotic Titrosampler
USB Hub
Relay Box
Remote Box
Balance
Dosing Interface
Dosino
Stirrer / Ti Stand
Dosimat
On
Status
Titrando
USB
Cond. cell
Sensors
Printer
Tower-PC
867 pH Module
1 Introduction
1.1 pH Module system
1 Introduction
867 pH Module
Figure 1867 pH Module system
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1
1.2 Instrument description
1.2 Instrument description
The 867 pH Module has the following characteristics:
■Operation
A touch-screen Touch Control or a high-performance PC software is
used for operation.
■Dosing
Dosinos and Dosimats can be used for dosing. Dosing is required for
standard additions and when auxiliary solutions are to be dosed.
■MSB connectors
Four MSB connectors (Metrohm Serial Bus) for connecting dosing devices (Dosimat with exchange unit or Dosino with dosing unit), stirrers
and Remote Boxes.
■USB connectors
Two USB connectors, with which devices such as printers, PC keyboards, barcode readers or additional control instruments (USB Sample
Processor, Titrando, Dosing Interface, etc.) can be connected.
■Measuring interface
One measuring input each for:
– a potentiometric electrode (pH, metal or ion-selective electrode)
– a separate reference electrode
– a temperature sensor (Pt1000 or NTC)
– a polarizable electrode
– an iConnect (measuring interface for electrodes with integrated
data chip, so-called iTrodes)
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1.3 Measuring modes and commands
The following measuring modes and commands are supported:
■MEAS
The following measuring modes can be selected for measurements:
– pH (pH measurement)
– U (potentiometric voltage measurement)
– T (temperature measurement)
– Ipol (voltametric measurement with selectable polarization cur-
rent)
– Upol (amperometric measurement with selectable polarization
voltage)
– Conc (concentration measurement)
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2
867 pH Module
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1 Introduction
■STDADD
The measuring modes for standard addition are listed separately only in
tiamo™. In Touch Control they are integrated in the measuring mode
MEAS Conc.
The following measuring modes can be selected for measurements:
– auto (automatic addition of the standard addition solution by
specifying a potential difference)
– dos (automatic addition of the standard addition solution by
specifying the individual volume increments)
– man (manual addition of the standard addition solution)
■CAL
Electrode calibration.
Measuring mode:
– pH (calibration of pH electrodes)
– Conc (calibration of ion-selective electrodes)
■ELT
Electrode test for pH electrodes.
This mode is listed separately only in tiamo™. In Touch Control, the
electrode test is part of the CAL calibration mode.
■Dosing commands
The following commands for dosing can be selected:
– PREP (rinsing the cylinder and tubings of an exchange unit or
dosing unit)
– EMPTY (emptying the cylinder and tubings of a dosing unit)
– ADD (dosing a specified volume)
– LQH (carrying out complex dosing tasks with a Dosino)
1.4 About the documentation
CAUTION
Please read through this documentation carefully before putting the
instrument into operation. The documentation contains information
and warnings which the user must follow in order to ensure safe operation of the instrument.
1.4.1 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the second to the instrument part in the figure.
867 pH Module
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3
1.5 Safety instructions
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Instruction step
Carry out these steps in the sequence shown.
MethodDialog text, parameter in the software
File ▶ NewMenu or menu item
[Next]Button or key
WARNING
This symbol draws attention to a possible life-threatening hazard or risk of injury.
WARNING
This symbol draws attention to a possible hazard due
to electrical current.
WARNING
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
1.5 Safety instructions
1.5.1 General notes on safety
WARNING
This instrument may only be operated in accordance with the specifications in this documentation.
WARNING
This symbol draws attention to a possible biological
hazard.
CAUTION
This symbol draws attention to possible damage to
instruments or instrument parts.
NOTE
This symbol highlights additional information and
tips.
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4
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.
867 pH Module
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1.5.2 Electrical safety
The electrical safety when working with the instrument is ensured as part
of the international standard IEC 61010.
Only personnel qualified by Metrohm are authorized to carry out service
work on electronic components.
Never open the housing of the instrument. The instrument could be
damaged by this. There is also a risk of serious injury if live components
are touched.
There are no parts inside the housing which can be serviced or replaced
by the user.
1 Introduction
WARNING
WARNING
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.
Do not fail to pull the mains cable out of the mains connection socket
before you set up or disconnect electrical plug connections at the rear
of the instrument.
867 pH Module
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5
1.5 Safety instructions
1.5.3 Working with liquids
CAUTION
Periodically check all system connections for leaks. Observe the relevant
regulations in respect to working with flammable and/or toxic fluids
and their disposal.
1.5.4 Recycling and disposal
This product is covered by European Directive 2002/96/EC, WEEE – Waste
from Electrical and Electronic Equipment.
The correct disposal of your old equipment will help to prevent negative
effects on the environment and public health.
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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6
867 pH Module
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2 Overview of the instrument
Figure 2Front 867 pH Module
2 Overview of the instrument
"On" LED
1
Lights up when the pH Module is ready for
operation.
867 pH Module
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Figure 3Rear of 867 pH Module
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Electrode connector (Ind.)
1
For connecting pH, metal or ion-selective
electrodes with integrated or separate reference electrode. Socket F.
Temperature sensor connector (Temp.)
3
For connecting temperature sensors (Pt1000
or NTC). Two B sockets, 2 mm.
Electrode connector (iConnect)
5
For connecting electrodes with integrated
data chip (iTrodes).
USB connector (USB 1 and USB 2)
7
USB ports (type A) for connecting printer,
keyboard, barcode reader, USB Sample Processor, etc.
Power socket
9
Electrode connector (Ref.)
2
For connecting reference electrodes, e.g.
Ag/AgCl reference electrode. Socket B,
4 mm.
Electrode connector (Pol.)
4
For connecting polarizable electrodes, e.g.
double Pt wire electrodes. Socket F.
Connector (Controller)
6
For connecting a Touch Control or a PC with
installed PC software. Mini DIN, 9-pin.
Type plate
8
Contains specifications concerning supply
voltage, instrument type and serial number.
MSB connector (MSB 1 to MSB 4)
10
Metrohm Serial Bus. For connecting external
dosing devices, stirrers or Remote Boxes.
Mini DIN, 9-pin.
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8
867 pH Module
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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.
3 Installation
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.
3.2 Connecting a controller
3.2.1 Operation
Two different versions are available for operating the 867 pH Module:
■A Touch Control with touch-sensitive screen. It forms a "stand-alone
instrument" together with the 867 pH Module.
■A computer enables operation of the 867 pH Module with the help of
a PC software, e.g. tiamo.
CAUTION
Take care to ensure that the power supply cable is pulled out of the
power socket before either setting up or disconnecting connections
between the instruments.
867 pH Module
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9
3.2 Connecting a controller
3.2.1.1 Connecting a Touch Control
NOTE
The plug is protected against accidental disconnection of the cable by
means of a pull-out protection feature. If you wish to pull out the plug,
you will first need to pull back the outer plug sleeve marked with
arrows.
Connect the Touch Control as follows:
■Insert the plug of the Touch Control connection cable into the
1
Controller socket.
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Figure 4Connecting the Touch Control
■Connect the MSB devices (see Chapter 3.3, page 13).
2
■Connect the USB devices (see Chapter 3.4, page 17).
■Connect the pH Module to the power supply.
3
■Switch on the Touch Control.
4
The Touch Control power supply is supplied through the pH Module.
Automatic system tests are performed on both instruments at the
time of activation. The On LED on the front of the pH Module lights
up when the system test has been completed and the instrument is
ready for operation.
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867 pH Module
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3 Installation
CAUTION
The Touch Control must be shut down properly by deactivation with
the power switch on the rear of the instrument before the power supply is interrupted. If this is not done, then there is a danger of data loss.
Because of the fact that the power supply for the Touch Control is provided through the pH Module, you must never disconnect the pH Module from the power supply (e.g. by deactivating with a connector strip)
before you have deactivated the Touch Control.
If you would prefer not to position the Touch Control directly next to the
pH Module, then you can lengthen the connection with the 6.2151.010
cable. The maximum connection length permitted is 5 m.
3.2.1.2
Connecting a computer
The 867 pH Module requires a USB connection to a computer in order to
be able to be controlled by a PC software. Using a 6.2151.000 controller
cable, the instrument can be connected directly, either to a USB socket on
a computer, to a connected USB hub or to a different Metrohm control
device.
You need administrator rights for the installation of driver software and
control software on your computer.
Cable connection and driver installation
A driver installation is required in order to ensure that the 867 pH Module
is recognized by the PC software. To accomplish this, you must comply
with the procedures specified. The following steps are necessary:
1
Installing the software
■Insert the PC software installation CD and carry out the installa-
tion program directions.
■Exit the program if you have started it after the installation.
2
Establishing the cable connections
■Connect all peripheral devices to the instrument, see Chapter 3.3,
page 13 and see Chapter 3.4, page 17.
■Connect the instrument to the power supply if you have not
already done this.
The "On" LED on the 867 pH Module is not yet illuminated!
■Connect the instrument to a USB connector (Type A) of your com-
puter (see manual of your computer). The 6.2151.000 cable is
used for this purpose.
867 pH Module
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11
3.2 Connecting a controller
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Figure 5Connecting the computer
The instrument is recognized. Depending on the version of the Windows operating system used, the driver installation proceeds differently afterwards. Either the necessary driver software is installed
automatically or an installation wizard is started.
Follow the instructions of the installation wizard.
3
The "On" LED on the 867 pH Module lights up when the driver
installation has been completed and the instrument is ready for operation.
If problems should occur during installation, contact your company's IT
support team.
NOTE
The plug on the instrument end of the 6.2151.000 controller cable is
protected against accidental disconnection by means of a pull-out protection feature. If you wish to pull out the plug, you will first need to
pull back the outer plug sleeve marked with arrows.
Registering and configuring the instrument in the PC software
The instrument must be registered in the configuration of your PC software. Once that has been done, you can then configure it according to
your requirements. Proceed as follows:
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867 pH Module
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MSB
Stirrer / Ti Stand
Dosimat / Dosino
Dosimat
Remote Box
Dosino / Dosimat
Dosino
Relay Box
Ti Stand / Stirrer
1
Setting up the instrument
■Start the PC software.
The instrument is automatically recognized. The configuration dialog for the instrument is displayed.
■Make configuration settings for the instrument and its connec-
tors.
More detailed information concerning the configuration of the
instrument can be found in the documentation for the respective PC
software.
3.3 Connecting MSB devices
In order to connect MSB devices, e.g. stirrers or dosing devices, Metrohm
instruments are equipped with up to a maximum of four connectors on
what is referred to as the Metrohm Serial Bus (MSB). Various kinds of
peripheral devices can be connected in sequence (in series, as a
"daisy chain") at a single MSB connector (8-pin Mini DIN socket) and controlled simultaneously by the respective control instrument. In addition to
the connection cable, stirrers and the Remote Box are each equipped with
their own MSB socket for this purpose.
3 Installation
The following figure provides an overview of the instruments that can be
connected to an MSB socket, along with a number of different cabling
variations.
Figure 6
MSB connections
The control instrument determines which peripheral devices are supported.
867 pH Module
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13
3.3 Connecting MSB devices
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NOTE
When connecting MSB devices together, the following must be
observed:
■Only one device of the same type can be used at a single MSB con-
nector at one time.
■Type 700 Dosino and 685 Dosimat dosing devices cannot be con-
nected together with other MSB instruments on a shared connector.
These dosing devices must be connected separately.
CAUTION
Exit the control software before you plug in MSB instruments. When it
is switched on, the control instrument automatically recognizes which
device is connected to which MSB connector. The operating unit or the
control software enters the connected MSB devices into the system
configuration (device manager).
MSB connections can be extended with the 6.2151.010 cable. The maximum connection length permitted is 15 m.
3.3.1 Connecting a dosing device
Four dosing devices can be connected to the instrument (MSB 1 to MSB
4).
The types of dosing devices that are supported are:
■800 Dosino
■700 Dosino
■805 Dosimat
■685 Dosimat
Proceed as follows:
1
Connecting a dosing device
■Exit the control software.
■Connect the connection cable of the dosing device to one of the
sockets marked with MSB on the rear of the control instrument.
■Start the control software.
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14
867 pH Module
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Figure 7Connecting a dosing device
3.3.2 Connecting a stirrer or titration stand
You can use the following instruments:
■With built-in magnetic stirrer (stirring "from below"):
– 801 Stirrer
– 803 Ti Stand
■Without built-in magnetic stirrer (stirring "from above"):
– 804 Ti Stand with propeller stirrer 802 Stirrer
3 Installation
Connect a stirrer or a titration stand as follows:
1
Connecting the stirrer or titration stand
■Exit the control software.
■Connect the connection cable of the magnetic stirrer or of the
titration stand to one of the sockets marked with MSB on the
rear of the control instrument.
■804 Ti Stand only: Connect the propeller stirrer to the stirrer con-
nector (socket with stirrer symbol) of the titration stand.
■Start the control software.
Figure 8Connecting an MSB stirrer
867 pH Module
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15
3.3 Connecting MSB devices
Figure 9Connecting the propeller stirrer to the titration stand
3.3.3 Connecting a Remote Box
Instruments that are controlled via remote lines and/or that send control
signals via remote lines can be connected via the 6.2148.010 Remote Box.
In addition to Metrohm, other instrument manufacturers also use similar
connectors that make it possible to connect different instruments
together. These interfaces are also frequently given the designations "TTL
Logic", "I/O Control" or "Relay Control" and generally have a signal level
of 5 volts.
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Control signals are understood to be electrical line statuses or electrical
pulses (> 200 ms) which display the operating status of an instrument or
which trigger or report an event. Sequences on a variety of instruments
can thus be coordinated in a single complex automation system. No
exchange of data is possible, however.
Proceed as follows:
1
Connecting the Remote Box
■Exit the control software.
■Connect the Remote Box connection cable to one of the sockets
marked with MSB on the rear of the control instrument.
■Start the control software.
Figure 10Connecting the Remote Box
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867 pH Module
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You can, for example, connect an 849 Level Control (fill level monitoring
in a canister) or a 731 Relay Box (switch box for 230/110 volt alternating
current sockets and low-voltage direct current outlets). The Remote Box
also has an MSB socket at which a further MSB device, e.g. a dosing
device or a stirrer, can be connected.
You will find precise information concerning the pin assignment of the
interface on the Remote Box in the appendix.
3.4 Connecting USB devices
3.4.1 General
The 867 pH Module has two USB connectors (type A sockets) for peripheral devices with USB interfaces. The 867 pH Module functions as a USB
hub (distributor) no matter how it is operated. If you wish to connect
more than two devices to the USB, you can also use an additional, commercially available USB hub.
CAUTION
3 Installation
CAUTION
If you operate the 867 pH Module with the aid of the Touch Control,
take care to ensure that the Touch Control is switched off when you set
up or disconnect connections between the various instruments. If you
use a PC software to control the 867 pH Module, you should exit the
program before you set up or disconnect the USB connections.
3.4.2 Connecting a USB hub
If you wish to connect more than two devices to the USB connector of the
867 pH Module, you can also use an additional commercially available
USB hub (distributor). If you operate the 867 pH Module with the help of
the Touch Control, then you should use a USB hub with its own power
supply.
Connect the USB hub as follows:
Switch off the Touch Control and/or exit the PC software.
1
With the aid of the 6.2151.020 cable, connect the USB connector of
2
the 867 pH Module (type A) with the USB connector of the hub (type
B, see manual for the hub).
867 pH Module
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17
3.4 Connecting USB devices
USB 1
USB 2
MSB 1
MSB 2
MSB 3
MSB 4
Made by Metrohm Herisau Switzerland
Controller
100 -200 V
f = 50 - 60 Hz
P = 45 W
Metrohm
Switzerland
Nr.
Typ
Switch on the Touch Control.
3
The USB hub is recognized automatically.
3.4.3 Connecting a printer
Printers that are connected to the 867 pH Module with Touch Control
must meet the following requirements:
■Printer resolution: 300 dots/inch or 360 dots/inch (Epson)
■Paper size: A4 or Letter, single-sheet feed.
Connect the printer as follows:
Switch off the Touch Control.
1
With the aid of the 6.2151.020 cable, connect the USB connector of
2
the 867 pH Module (type A) with the USB connector of the printer
(type B, see manual for the printer).
Switch on the printer first, then the Touch Control.
3
Configure the printer in the device manager of the Touch Control
4
(see Touch Control manual).
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Figure 11Connecting a printer
3.4.4 Connecting a balance
■Operation with a PC software:
■Operation with Touch Control:
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18
– Connect the balance directly to the serial connector (COM) of
the computer. This is usually 9-pin and marked with the symbol
IOIOI.
– You will need the 6.2148.050 USB/RS-232 adapter to connect a
balance.
867 pH Module
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3 Installation
The following table offers an overview of the balances that you can use
together with the 867 pH Module and of which cable you will need for
connection to the RS-232 interface:
BalanceCable
AND ER, FR, FX with RS-232 inter-
6.2125.020 + 6.2125.010
face (OP-03)
Mettler AB, AG, PR (LC-RS9)In the scope of delivery for the
balance
Mettler AM, PM, PE with interface
option 016
or
Mettler AJ, PJ with interface
option 018
6.2146.020 + 6.2125.010
Also from Mettler: ME 47473
adapter and either ME 42500
hand switch or ME 46278 foot
switch
Mettler AT6.2146.020 + 6.2125.010
Also from Mettler: ME 42500
hand switch or ME 46278 foot
switch
Mettler AX, MX, UMX, PG, AB-S,
6.2134.120
PB-S, XP, XS
Mettler AE with interface option
011 or 012
6.2125.020 + 6.2125.010
Also from Mettler: ME 42500
hand switch or ME 46278 foot
switch
867 pH Module
Ohaus Voyager, Explorer, Analyti-
Cable AS017-09 from Ohaus
cal Plus
Precisa balances with RS-232-C
6.2125.080 + 6.2125.010
interface
Sartorius MP8, MC, LA, Genius,
6.2134.060
Cubis
Shimadzu BX, BW6.2125.080 + 6.2125.010
Operation with Touch Control
Connect the balance as follows:
Plug in the USB plug of the USB/RS-232 adapter at the USB connec-
1
tor of the 867 pH Module.
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3.4 Connecting USB devices
Connect the RS-232 interface of the USB/RS-232 adapter with the
2
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RS-232 interface of the balance (see table for cable).
Switch on the Touch Control.
3
Switch on the balance.
4
Activate the RS-232 interface of the balance if necessary.
5
Configure the RS-232 interface of the USB/RS-232 adapter in the
6
device manager of the Touch Control (see Touch Control manual).
3.4.5 Connecting a PC keyboard (only for operation with Touch Control)
The PC keyboard is used as an aid for text and numerical input.
Connect the PC keyboard as follows:
Insert the USB plug of the keyboard into one of the USB sockets of
1
the 867 pH Module.
Switch on the Touch Control.
2
The keyboard is recognized automatically and entered in the device
manager.
Configure the keyboard in the device manager of the Touch Control
3
(see Touch Control manual).
3.4.6 Connecting a barcode reader
The barcode reader is used as an aid for text and numerical input. You can
connect a barcode reader with USB interface.
Operation with Touch Control
Connect the barcode reader as follows:
Insert the USB plug of the barcode reader into one of the USB sock-
1
ets of the 867 pH Module.
Switch on the Touch Control.
2
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867 pH Module
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3 Installation
The barcode reader is recognized automatically and entered in the
device manager.
Configure the barcode reader in the device manager of the Touch
3
Control (see Touch Control manual).
Settings on the barcode reader:
Program the barcode reader as follows (see also the manual for the barcode reader):
Switch the barcode reader to programming mode.
1
Specify the desired layout for the keyboard (USA, Germany, France,
2
Spain, German-speaking Switzerland).
This setting must match the setting in the device manager (see the
Touch Control manual).
Make sure that the barcode reader is set in such a way that Ctrl char-
3
acters (ASCII 00 to 31) can be sent.
Program the barcode reader in such a way that the ASCII character
4
02 (STX or Ctrl B) is sent as the first character. This first character is
normally referred to as the "Preamble" or "Prefix Code".
Program the barcode reader in such a way that the ASCII character
5
04 (EOT or Ctrl D) is sent as the last character. This last character is
normally referred to as the "Postamble", "Record Suffix" or "Postfix
Code".
Exit the programming mode.
6
867 pH Module
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21
3.5 Connecting sensors
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3.5 Connecting sensors
The measuring interface contains the following measuring inputs:
■Ind. for a potentiometric electrode (pH, metal or ion-selective elec-
trode)
■Ref. for a separate reference electrode
■Temp. for a temperature sensor (Pt1000 or NTC)
■Pol. for a polarizable electrode
■iConnect for an iConnect (measuring interface for electrodes with
integrated data chip, so-called iTrodes)
3.5.1 Connecting a pH, metal or ion-selective electrode
Connect the pH, metal or ion-selective electrode as follows:
Plug the electrode plug into the Ind. socket of the 867 pH Module.
1
Figure 12Connecting a pH, metal or ion-selective electrode
NOTE
The electrode cable is protected against accidental disconnection
of the cable by means of a pull-out protection. If you wish to pull
out the plug again, you will first need to pull back the outer plug
sleeve.
3.5.2 Connecting a reference electrode
Connect the reference electrode as follows:
Plug the electrode plug into the Ref. socket of the 867 pH Module.
1
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22
867 pH Module
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Figure 13Connecting a reference electrode
3.5.3 Connecting a polarizable electrode
Connect the polarizable electrode as follows:
Plug the electrode plug into the Pol. socket of the 867 pH Module.
1
3 Installation
Figure 14Connecting a polarizable electrode
NOTE
The electrode cable is protected against accidental disconnection
of the cable by means of a pull-out protection. If you wish to pull
out the plug again, you will first need to pull back the outer plug
sleeve.
867 pH Module
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23
3.5 Connecting sensors
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3.5.4 Connecting a temperature sensor or an electrode with integrated
temperature sensor
A temperature sensor of the Pt1000 or NTC type can be connected to the
Temp. connector.
Connect the temperature sensor or the electrode with integrated temperature sensor as follows:
Insert the plugs of the temperature sensor into the Temp. sockets of
1
the pH Module.
Figure 15Connecting a temperature sensor or an electrode with
Always insert the red plug into the red socket. This is the only way
that shielding against electrical interference can be ensured.
3.5.5 Connecting an iConnect
An external 854 iConnect measuring interface can be connected to the
867 pH Module.
Connect the iConnect as follows:
Plug the iConnect plug into the iConnect socket of the 867 pH
1
Module.
Take care to ensure that the marking on the plug matches the marking on the pH Module as shown in the figure.
integrated temperature sensor
NOTE
■■■■■■■■
24
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
3 Installation
Figure 16Connecting the iConnect
The iConnect is detected automatically and entered as measuring
input into the device properties of the pH Module. If an electrode is
connected to the iConnect that is not yet included in the list of sensors for the control software, then a corresponding message will be
displayed.
The iConnect can be plugged in and unplugged while the pH Module
is switched on.
An electrode with integrated data chip, referred to as iTrode, is connected
to the iConnect.
Connect the electrode as follows:
Remove the protective caps on the iConnect and the electrode.
1
Plug in the electrode on the iConnect as illustrated below.
2
Figure 17Connecting an electrode to the iConnect
867 pH Module
The guide pin guarantees correct connection in such a way that the
contact pins cannot be damaged.
Screw the iConnect tightly.
3
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25
4.1 General notes
4 Operation and maintenance
4.1 General notes
4.1.1 Care
The 867 pH Module requires appropriate care. Excess contamination of
the instrument may result in functional disruptions and a reduction in the
lifetime of the otherwise sturdy mechanics and electronics.
Spilled chemicals and solvents should be removed immediately. Above all,
the plug connections on the rear of the instrument (in particular the
power socket) should be protected from contamination.
CAUTION
Although this is largely prevented by design measures, the power plug
should be unplugged immediately if aggressive media have found their
way into the interior of the instrument to prevent serious damage to
the instrument electronics. In such cases, Metrohm Service must be
informed.
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4.1.2 Maintenance by Metrohm Service
Maintenance of the 867 pH Module is best carried out as part of annual
service, which is performed by specialist personnel from Metrohm. A
shorter maintenance interval may be necessary if you frequently work with
caustic and corrosive chemicals.
Metrohm Service provides professional technical consultation at all times
for the maintenance and servicing of all Metrohm instruments.
■■■■■■■■
26
867 pH Module
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4 Operation and maintenance
4.2 Quality Management and qualification with
Metrohm
Quality management
Metrohm offers you comprehensive support in implementing quality management measures for instruments and software. Further information on
this can be found in the brochure "Metrohm Quality Management"
available from your local Metrohm representative.
Qualification
Please contact your local Metrohm representative for support in qualification of instruments and software. The Installation Qualification (IQ)
and Operational Qualification (OQ) are offered by Metrohm representatives as a service. They are carried out by trained employees using standardized qualification documents and in accordance with the currently
applicable requirements of the regulated industry. Further information on
this can be found in the brochure "Analytical Instrument Qualifica-tion – Confidence in quality with IQ/OQ".
Maintenance
The electronic and mechanical functional groups of Metrohm instruments
can and should be checked by specialist personnel from Metrohm as part
of a regular preventive maintenance schedule. Please ask your local
Metrohm representative regarding the precise terms and conditions
involved in concluding a corresponding maintenance agreement. Further
information on this can be found in the brochure "Metrohm Care Con-tracts – Protect your investment the smart way" available from your
local Metrohm representative.
867 pH Module
■■■■■■■■
27
5.1 General
5 Troubleshooting
5.1 General
ProblemCauseRemedy
■■■■■■■■■■■■■■■■■■■■■■
The measured value
is evidently wrong.
No or heavily fluctuating measuring signal.
The calibration is wrong.■Check the calibration and repeat, if neces-
sary.
■Check the buffer or standard solutions and
repeat the calibration, if necessary.
The manual temperature
input is wrong.
The pH or ISE membrane or
the diaphragm is contaminated.
The electrolyte or the measuring chain is overaged.
The measuring chain is
defective.
The measuring chain is not
connected.
Air is trapped in or in front
of the diaphragm.
The measuring chain is
defective.
Enter the correct measuring temperature.
Clean the membrane or the diaphragm.
Replace the electrolyte or the measuring chain.
Replace the measuring chain.
Connect the measuring chain.
Remove the air.
Replace the measuring chain.
The measured value
remains unstable
and does not fulfil
the drift criterion.
■■■■■■■■
28
The pH or ISE membrane or
the diaphragm is contaminated.
The pH value or the temperature of the measuring
solution is not stable.
Unsuitable measuring
chain. The conductivity is
too low or an organic solution is present.
The measuring chain is not
connected.
Clean the membrane or the diaphragm.
■Measure under exclusion of air.
■Control the temperature of the measuring
solution.
Use a suitable measuring chain.
Connect the measuring chain.
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
ProblemCauseRemedy
5 Troubleshooting
Sluggish measured
value setting.
Insufficient slope
during calibration.
The Delta U potential step set is not
achieved with 'auto'
standard addition.
The measuring chain is
Replace the measuring chain.
defective.
The pH or ISE membrane or
Clean the membrane or the diaphragm.
the diaphragm is contaminated.
The pH or ISE membrane or
Clean the membrane or the diaphragm.
the diaphragm is contaminated.
No hydrated layer is present on the glass membrane
after measurements in
Between measurements, place separate electrodes in distilled water and combined electrodes in reference electrolyte.
water-free solutions.
The buffer or standard sol-
Use fresh buffer or standard solutions.
utions are old.
The electrode is worn out.Replace the electrode.
The streaming potential of
the indicator electrode or
reference electrode results
in a potential difference
between stirred addition
■Reduce the dosing rate.
■Increase the stirring rate.
■Increase Delta U.
■Touch Control:
Select Addition = auto dos.
and non-stirred measurement.
867 pH Module
■■■■■■■■
29
6.1 Remote interface
1
2
3
13
1
14
25
1
13
14
25
6 Appendix
6.1 Remote interface
The 6.2148.010 Remote Box allows devices to be controlled which cannot
be connected directly to the MSB interface of the pH Module.
■■■■■■■■■■■■■■■■■■■■■■
Figure 18Connectors of the Remote Box
Cable
1
For connecting to the pH Module.
Remote connector
3
For connecting instruments with a remote
interface.
MSB connector
2
Metrohm Serial Bus. For connecting external
dosing devices or stirrers.
6.1.1 Pin assignment of the remote interface
Figure 19
The above figure of the pin assignment applies for all Metrohm instruments with 25-pin D-Sub remote connector.
Pin assignment of remote socket and remote plug
■■■■■■■■
30
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
+5 V
t
p
t
p
6 Appendix
Inputs
approx. 50 kΩ Pull-up
tp > 20 ms
active = low, inactive = high
Outputs
Open Collector
tp > 200 ms
active = low, inactive = high
IC = 20 mA, V
CEO
= 40 V
+5 V: maximum load = 20 mA
The following tables offer information concerning the assignment of the
individual pins and their function:
Table 1
AssignmentPin No.Function
Inputs and outputs of the remote interface
*
Input 021Start
Input 19Stop
Input 222
Input 310Quit
Input 423–
Input 511
Input 624
Input 712
Output 05Ready
Output 118Conditioning OK
Output 24Determination
Output 317EOD
Output 43
Output 516Error
Output 61
Output 72Warning
867 pH Module
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31
6.1 Remote interface
■■■■■■■■■■■■■■■■■■■■■■
AssignmentPin No.Function
*
Output 86
Output 97
Output 108
Output 1113
Output 1219
Output 1320
0 volts / GND14
+5 volts15
0 volts / GND25
* Signal activated only for operation with Touch Control.
Table 2
Explanation of the individual functions
FunctionExplanation
StartThe current method is started at the time of acti-
vation.
t
> 100 ms
pulse
StopThe current method is canceled (Stop) at the time
of activation.
t
> 100 ms
pulse
QuitThe current command in the determination run
will be canceled at the time of activation.
t
> 100 ms
pulse
ReadyThe instrument is ready to receive a start signal.
Conditioning OKThe line is set when Conditioning with SET titra-
tion and KFT titration is at OK. The line remains
set until the determination is started with
[START].
DeterminationThe instrument performs a data-generating
determination.
EODEnd of Determination.
Pulse (t
= 200 ms) after a determination or
pulse
after a buffer/standard solution during calibration
using a Sample Processor.
■■■■■■■■
32
ErrorThe line is set for error message display.
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
6 Appendix
FunctionExplanation
WarningThe line is set for warning message display.
867 pH Module
■■■■■■■■
33
7.1 Measuring interface
7 Technical specifications
7.1 Measuring interface
The 867 pH Module has one galvanically isolated measuring interface.
The measuring cycle is 100 ms for all measuring modes.
7.1.1 Potentiometry
One high-ohm measuring input (Ind.) for pH, metal or ion-selective electrodes and one measuring input (Ref.) for separate reference electrodes.
■■■■■■■■■■■■■■■■■■■■■■
Input resistance
> 1 · 1012 Ω
Offset current< 1 · 10
Measuring mode
pH
Measuring
–13 - +20 pH
range
Resolution0.001 pH
Measuring
accuracy
±0.003 pH
(±1 digit, without sensor error, under reference conditions)
Measuring mode
U
Measuring
–1,200 - +1,200 mV
range
Resolution0.1 mV
Measuring
accuracy
±0.2 mV
(±1 digit, without sensor error, under reference conditions)
Measuring mode
Conc
Measuring
10
–21
- 10
range
Resolution
Measuring
(±1 digit, without sensor error, under reference conditions)
accuracy
–12
A (under reference conditions)
20
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34
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
7.1.2 Temperature
A measuring input (Temp.) for temperature sensors of the Pt1000 or NTC
type with automatic temperature compensation.
R (25 °C) and B value can be configured for NTC sensors.
Measuring range
Pt1000–150 - +250 °C
NTC–5 - +250 °C
(R (25 °C) = 30,000 Ω and B (25/50) = 4,100 K)
Resolution
Pt10000.1 °C
NTC0.1 °C
Measuring accuracy
Pt1000±0.2 °C
(Applies for measuring range –20 - +150 °C; ±1 digit; without sensor
error, under reference conditions)
NTC±0.6 °C
(Applies for measuring range +10 - +40 °C; ±1 digit; without sensor
error, under reference conditions)
7 Technical specifications
7.1.3 Polarizer
One measuring input (Pol.) for polarizable electrodes.
Measuring mode
Ipol
Polarization
current
Measuring
range
Resolution0.1 mV
Measuring
accuracy
Measuring mode
Upol
Polarization
voltage
Measuring
range
Determination with adjustable polarization current
–122.5 - +122.5 µA (increment: 0.5 µA)
–125.0 - +125.0 µA: non-guaranteed values, dependent on reference
voltage +2.5 mV
–1,200 - +1,200 mV
±0.2 µA
(±1 digit; without sensor error, under reference conditions)
Determination with adjustable polarization voltage
–1,225 - +1,225 mV (increment: 25 mV)
–1,250 - +1,250 mV: non-guaranteed values, dependent on reference
voltage +2.5 mV
–120 - +120 µA
867 pH Module
■■■■■■■■
35
7.2 Power connection
Resolution0.01 µA
Measuring
—
accuracy
7.2 Power connection
Supply voltage100 - 240 V
Frequency50 - 60 Hz
■■■■■■■■■■■■■■■■■■■■■■
Power consump-
45 W
tion
Fuse2 x 1.6 ATH
7.3 Safety specifications
Design and testing
Safety instructionsThe documentation contains safety instructions which have to be fol-
■EN/IEC 61010-1
■UL 61010-1
■CSA-C22.2 No. 61010-1
■Protection class I
lowed by the user in order to ensure safe operation of the instrument.
Instrument statusInstrument in operation at least 30 min
Validity of the
data
+25 °C (± 3 °C)
After adjustment
7.7 Dimensions
Width
Height108 mm
142 mm
Depth230 mm
Weight2,660 g
MaterialSteel sheet
7.8 Interfaces
USB connectors
USB ports
Controller port
Touch ControlWith integrated Touch Control cable.
ComputerWith 6.2151.000 cable.
2 USB downstream ports (type A sockets), 500 mA each, for connecting peripheral devices such as printers, keyboards, barcode readers or
RS-232/USB boxes (Metrohm order no. 6.2148.020).
Connector "Controller"
USB upstream port with auxiliary power supply (Mini DIN socket) for
connecting Touch Control or computer for controlling the 867 pH
Module.
867 pH Module
■■■■■■■■
37
7.8 Interfaces
■■■■■■■■■■■■■■■■■■■■■■
MSB connectors (Metrohm Serial Bus)
Dosing deviceConnector for a maximum of four external dosing devices, models Dos-
imat or Dosino (MSB 1 to MSB 4).
StirrerConnector for a maximum of four stirrers.
Stirrer control: switching on/off manually or coordinated with the titration sequence.
Speed in 15 steps and shift direction can be selected.
Remote BoxConnector for a maximum of four Remote Boxes. Remote Boxes can
be used to actuate and monitor external devices.
■■■■■■■■
38
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
8 Warranty (guarantee)
Metrohm guarantees that the deliveries and services it provides are free of
defects in materials, design or manufacturing.
The general warranty period is 36 months (exclusions below) from the
date of delivery or 18 months in the event of continuous operation. The
warranty remains valid on the condition that the servicing is provided by a
service organization authorized by Metrohm at defined intervals and with
a defined scope.
The warranty period for anion suppressors of the type "MSM" is 120
months from the date of delivery or 60 months in the case of continuous
operation.
The warranty period for IC separation columns is 90 days after start-up.
For third-party components that are recognizable as such, the manufacturer's warranty regulations apply.
8 Warranty (guarantee)
Consumables and materials with limited storage life and glass breakage in
the case of electrodes or other glass parts are excluded from the warranty.
Warranty claims cannot be asserted if the ordering party has failed to
meet its payment obligations according to schedule.
During the warranty period, Metrohm undertakes either to replace free of
charge or to credit the purchaser for any modules or components that can
be shown to be faulty. Any transport or customs fees that may apply are
the ordering party’s responsibility.
The precondition for this is that the ordering party has to specify the article number, the article designation, an adequate error description, the
delivery date and (if applicable) the serial number or chip data in the Support Tracker. Metrohm then decides whether a replacement or a credit
note is to be issued or whether the faulty part has to be returned using
the Return Material Authorization (RMA). If a replacement or credit note is
issued, the ordering party undertakes to store the faulty part for at least
24 months in accordance with the current storage directives (in compliance with ESD guidelines) and to hold it in readiness for onsite inspection
or for return shipment to Metrohm. Metrohm reserves the right to invoice
the ordering party for these articles, including retroactively, in the event of
noncompliance with these preconditions.
867 pH Module
The same warranty periods that are specified for a corresponding new
part apply to parts that are replaced or repaired within the above-mentioned warranty periods. However, replacement or repair of a part does
not extend the warranty period of the entire system.
■■■■■■■■
39
■■■■■■■■■■■■■■■■■■■■■■
Deficiencies arising from circumstances that are not the responsibility of
Metrohm, such as improper storage or improper use, etc., are expressly
excluded from the warranty.
Metrohm also offers a 120 month spare parts availability guarantee and a
60 month PC software support warranty, calculated from the date on
which the product is withdrawn from the market. The content of this warranty is the ability of the customer to obtain functioning spare parts or
appropriate software support at market prices during the time of the warranty period.
If Metrohm AG is unable to meet this obligation due to circumstances
beyond the control of Metrohm AG, then the ordering party shall be
offered alternative solutions at preferential conditions.
■■■■■■■■
40
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
9 Accessories
NOTE
Subject to change without notice.
9.1 Scope of delivery
9.1.1 2.867.0010
9 Accessories
Qty.
Order no.Description
11.867.0010pH Module
Module for pH/ion measurement as supplement to a Titrando or
"stand-alone" in combination with a 900 Touch Control.
16.2103.130Adapter red 2 mm plug / 4 mm socket
For connecting plug B (4 mm) to 2 mm socket.
16.2103.140Adapter black 2 mm plug / B socket 4 mm
For connecting plug B (4 mm) to 2 mm socket.
867 pH Module
■■■■■■■■
41
9.1 Scope of delivery
Qty.Order no.Description
16.2122.0x0Power supply cable with IEC 60320 line
socket, type C13
Cable plug according to customer requirements.
Switzerland:SEV 1011, Type 12
6.2122.020
Germany, …:CEE 7, Type VII
6.2122.040
USA, …:NEMA 5-15, Type 498
6.2122.070
Length:1.5 m
18.867.8003EN867 pH Module Manual
9.1.2 2.867.0110
■■■■■■■■■■■■■■■■■■■■■■
Qty.
Order no.Description
11.854.0010iConnect
11.867.0010pH Module
11.900.0010Touch Control
16.0278.300iUnitrode with Pt 1000
Combined pH glass electrode for measurements in difficult media,
with memory chip for sensor data such as article and serial number,
calibration data and calibration history.
Electrode holder for 4 electrodes and 2 buret tips
Material:Plastic
16.2103.130Adapter red 2 mm plug / 4 mm socket
For connecting plug B (4 mm) to 2 mm socket.
■■■■■■■■■■■■■■■■■■■■■■
16.2103.140Adapter black 2 mm plug / B socket 4 mm
For connecting plug B (4 mm) to 2 mm socket.
16.2307.230Buffer solutions pH 4, 7 and 9
Mixed buffer solutions pH 4.00/7.00/9.00 (25 °C) in single use
sachets, colourless, box of 3 x 10 x 30 mL
16.2325.000pHit kit
Maintenance kit for pH electrodes The kit contains: 50 mL cleaning
solution50 mL 3M KCl solution50 mL storage solution2 Storage vesselsInstructions for use
■■■■■■■■
44
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
Qty.Order no.Description
16.2621.070Hexagon key 5 mm
5 mm.
Length (mm):80
16.2621.130Hexagon key 2 mm
2 mm.
9 Accessories
16.6064.010USB Memory Stick for 900 Touch Control
16.2122.0x0Power supply cable with IEC 60320 line
socket, type C13
Cable plug according to customer requirements.
Switzerland:SEV 1011, Type 12
6.2122.020
Germany, …:CEE 7, Type VII
6.2122.040
USA, …:NEMA 5-15, Type 498
6.2122.070
Length:1.5 m
867 pH Module
■■■■■■■■
45
9.1 Scope of delivery
Qty.Order no.Description
18.867.8003EN867 pH Module Manual
9.1.3 2.867.0210
Qty.Order no.Description
11.854.0010iConnect
11.867.0010pH Module
16.0278.300iUnitrode with Pt 1000
Combined pH glass electrode for measurements in difficult media,
with memory chip for sensor data such as article and serial number,
calibration data and calibration history.
Electrode holder for 4 electrodes and 2 buret tips
Material:Plastic
867 pH Module
■■■■■■■■
47
9.1 Scope of delivery
Qty.Order no.Description
16.2103.130Adapter red 2 mm plug / 4 mm socket
For connecting plug B (4 mm) to 2 mm socket.
16.2103.140Adapter black 2 mm plug / B socket 4 mm
For connecting plug B (4 mm) to 2 mm socket.
■■■■■■■■■■■■■■■■■■■■■■
16.2151.000Cable USB A – mini-DIN 8-pin
Controller cable
Length (m):1.8
16.2307.230Buffer solutions pH 4, 7 and 9
Mixed buffer solutions pH 4.00/7.00/9.00 (25 °C) in single use
sachets, colourless, box of 3 x 10 x 30 mL
16.2325.000pHit kit
Maintenance kit for pH electrodes The kit contains: 50 mL cleaning
solution50 mL 3M KCl solution50 mL storage solution2 Storage vesselsInstructions for use
■■■■■■■■
48
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
Qty.Order no.Description
16.2621.070Hexagon key 5 mm
5 mm.
Length (mm):80
16.2621.130Hexagon key 2 mm
2 mm.
9 Accessories
16.6056.231tiamo ™ 2.3 Light CD: 1 license
tiamo ™ 2.3 light computer program for controlling a titration system. Up to two instruments can be connected Graphical method editor with numerous templates Layout Manager for customizing the
user interface Professional database with reevaluation High-performance report generator No parallel titration, no data export 1 license
Dialog languages: German, English
16.2122.0x0Power supply cable with IEC 60320 line
socket, type C13
Cable plug according to customer requirements.
Switzerland:SEV 1011, Type 12
6.2122.020
Germany, …:CEE 7, Type VII
6.2122.040
USA, …:NEMA 5-15, Type 498
6.2122.070
Length:1.5 m
18.867.8003EN867 pH Module Manual
867 pH Module
■■■■■■■■
49
9.2 Optional accessories
9.2 Optional accessories
Order no.Description
2.801.0010801 Stirrer
Magnetic stirrer without stand for supplementing the Titrino plus, Dosimat plus,
Titrandos, Sample Processors, 805 Dosimats and 780/781 pH Meters. With permanently attached cable for MSB (Metrohm Serial Bus).
2.802.0040802 Stirrer (propeller stirrer) for 804 Ti Stand
Rod stirrer with 6.1909.010 Propeller stirrer.
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■■■■■■■■
50
867 pH Module
■■■■■■■■■■■■■■■■■■■■■■
Order no.Description
2.804.0010804 Ti Stand without stand rod
Titration stand and controller for 802 Stirrer. The 804 Ti Stand together with the
optional 802 Stirrer provides an alternative to the magnetic stirrer. Without
stand.
2.814.0010814 USB Sample Processor (1T/1P)
USB Sample Processor with one work station and one membrane pump for
automatic processing of small to medium numbers of routine samples. The
device can be controlled in «stand alone» operation using the Touch Control
unit or by means of a PC with either the titration software tiamo™ or the chromatography software MagIC Net™.
9 Accessories
867 pH Module
■■■■■■■■
51
9.2 Optional accessories
Order no.Description
2.814.0020814 USB Sample Processor (1T/2P)
USB Sample Processor with one work station and two membrane pumps for
automatic processing of small to medium numbers of routine samples. The
device can be controlled in «stand alone» operation using the Touch Control
unit or by means of a PC with either the titration software tiamo™ or the chromatography software MagIC Net™.
2.814.0030814 USB Sample Processor (1T/0P)
USB Sample Processor with one work station and two pump connections for
automatic processing of small to medium numbers of routine samples. The
device can be controlled in «stand alone» operation using the Touch Control
unit or by means of a PC with either the titration software tiamo™ or the chromatography software MagIC Net™.