Xylem SI Analytics TITRATOR TitroLine 7500 KF User manual

TitroLine®7500 KF trace
TITRATOR
OPERATING INSTRUCTIONS

Gebrauchsanleitung Originalversion.................................................................................. Seite 3 ..... 58
Wichtige Hinweise: Die Gebrauchsanleitung vor der ersten Inbetriebnahme des Titrators TitroLine® 7500 KF
trace bitte sorgfältig lesen und beachten. Aus Sicherheitsgründen darf der Titrator TitroLine® 7500 KF trace
ausschließlich nur für die in dieser Gebrauchsanleitung beschriebenen Zwecke eingesetzt werden.
Bitte beachten Sie auch die Gebrauchsanleitungen für die anzuschließenden Geräte.
Alle in dieser Gebrauchsanleitung enthaltenen Angaben sind zum Zeitpunkt der Drucklegung gültige Daten. Es
können jedoch von SI Analytics sowohl aus technischen und kaufmännischen Gründen, als auch aus der
Notwendigkeit heraus, gesetzliche Bestimmungen der verschiedenen Länder zu berücksichtigen,
Ergänzungen am Titrator TitroLine® 7500 KF trace vorgenommen werden, ohne dass die beschriebenen
Eigenschaften beeinflusst werden.
Operating Instructions ..................................................................................................... Page 59.... 110
Important notes: Before initial operation of the Titration Unit TitroLine® 7500 KF trace, please read and
observe carefully the operating instructions. For safety reasons the Titration Unit TitroLine® 7500 KF trace may
only be used for the purposes described in these present operating instructions.
Please also observe the operating instructions for the units to be connected.
All specifications in this instruction manual are guidance values which are valid at the time of printing.
However, for technical or commercial reasons or in the necessity to comply with the statuary stipulations of
various countries, SI Analytics may perform additions to the Titration Unit TitroLine® 7500 KF trace without
changing the described properties.
Copyright © 2013, SI Analytics GmbH
Reprinting - even as excerpts - is only allowed with the explicit written authorization of SI Analytics
GmbH, Mainz.
Printed in Germany.

TABLE OF CONTENT PAGE
1.. Technical Specifications of the Titrator TitroLine® 7500 KF trace...................... 59
1.1 Summary................................................................................................................................. 59
1.2 Specifications Titrator TitroLine® 7500 KF trace .................................................................... 60
1.3 Warning and safety information .............................................................................................. 63
2.. Unpacking and First Operation .............................................................................. 64
2.1 Unpacking ............................................................................................................................... 64
2.2 Connection and installation of titrator and magnetic stirrer TM 235 ....................................... 65
2.3 Installation with magnetic stirrer TM 235 (module 1 and 3).................................................... 66
2.4 Installation with magnetic stirrer/pump TM 235 KF (module 2 and 4) .................................... 68
2.5 Filling the Titration Vessel....................................................................................................... 71
2.6 Switch on Device, First Conditioning....................................................................................... 71
2.7 Connecting the Titrator - Combination with Accessories and Additional Devices .................. 72
2.7.1 Back panel of the titrator TitroLine® 7500 KF trace................................................................ 72
2.7.2 Connection ports of the TitroLine® 7500 KF trace.................................................................. 72
2.7.3 Connecting a printer................................................................................................................ 72
2.7.4 Connecting a USB device (manual controller, keyboard, memory device, hub) .................... 72
2.7.5 Connection of analytical balances........................................................................................... 73
2.8 Setting the Language of the Country ...................................................................................... 73
3.. Working with the Titrator TitroLine® 7500 KF trace ............................................. 74
3.1 Front Keyboard........................................................................................................................ 74
3.2 Display..................................................................................................................................... 74
3.3 External PC Keyboard............................................................................................................. 75
3.4 Menu Structure........................................................................................................................ 76
3.5 Main Menu............................................................................................................................... 78
3.5.1 Starting a Titration................................................................................................................... 78
4.. Method Parameters ................................................................................................. 81
4.1 Method editing and new method............................................................................................. 81
4.2 Default methods ...................................................................................................................... 81
4.3 Copy Methods......................................................................................................................... 82
4.4 Delete Methods ....................................................................................................................... 82
4.5 Print method............................................................................................................................ 83
4.6 Change Method Parameters................................................................................................... 83
4.6.1 Result ...................................................................................................................................... 83
4.6.2 Titration parameters................................................................................................................ 90
4.6.3 Sample identification............................................................................................................... 94
4.6.4 Documentation ........................................................................................................................ 95
5.. System settings ....................................................................................................... 96
5.1 Global Memory........................................................................................................................ 96
5.2 RS232 Settings ....................................................................................................................... 96
5.3 Date and Time......................................................................................................................... 98
5.4 Password................................................................................................................................. 98
5.5 RESET .................................................................................................................................... 98
5.6 Printer...................................................................................................................................... 99
5.7 Device Information .................................................................................................................. 99
5.8 System Tone ........................................................................................................................... 99
5.9 Data exchange...................................................................................................................... 100
5.10 Software Update.................................................................................................................... 102
6.. Data Communication via RS-232- and USB-B interface..................................... 104
6.1 General Information............................................................................................................... 104
6.2 Chaining multiple devices —“Daisy Chain Concept“ ............................................................ 104
6.3 Instruction Set for RS-Communication.................................................................................. 104

7.. Connection of Analytical Balances and Printers ................................................ 106
7.1 Connection of Analytical Balances........................................................................................ 106
7.1.1 Balance TZ-Number.............................................................................................................. 106
7.2 Balance data editor ............................................................................................................... 107
7.3 Connection of Printers........................................................................................................... 108
8.. Maintenance and Care of the TitroLine® 7500 KF trace..................................... 109
9.. Storage and transportation................................................................................... 109
10Recycling and Disposal......................................................................................... 109
11Index ....................................................................................................................... 110
Declaration of conformity last page of the document
Notes to the Manual
The provided manual will allow you the proper and safe handling of the titration instruments.
The pictogram
!
has the following meaning:
For maximum security, observe the safety and warning instructions in the Instructions .
Warning of a general danger to personnel and equipment
Non-compliance may result in injury or material will be destroyed.
Status at time of printing
Advanced technology and the high quality of our products are guaranteed by a continuous development. This
may result in differences between this operating manual and your product We can not exclude mistakes. We
are sure you understand that no legal claims can be derived from the information, illustrations and
descriptions.
Note
A potentially more recent version of this manual is available on our internet website at www.si-analytics.com .
The German version is the original version and binding in all specifications .
Version 131126 US

59
1 Technical Specifications of the Titrator TitroLine® 7500 KF trace
1.1 Summary
The TitroLine® 7500 KF trace is suitable for the following applications:
The possible range of titrations includes coulometric KF titrations with a maximum of 50 memorisable methods.
The TitroLine® 7500 KF trace can be used as stand-alone instrument or in combination with a heating oven.
!
General provisions:
!
The safety guidelines that are applicable to the handling of chemicals have to be observed under all
circumstances. This applies in particular to inflammable and/or etching liquids.
Guarantee
We provide guarantee for the device described for two years from the date of purchase. This
guarantee covers manufacturing faults being discovered within the mentioned period of two years.
Claim under guarantee covers only the restoration of functionality, not any further claim for damages or
financial loss.
Improper handling/use or illegitimate opening of the device results in loss of the guarantee rights. The
guarantee does not cover the breach of glass parts. Also the delivered electrodes are excluded. To
ascertain the guarantee liability, please return the instrument and proof of purchase together with the
date of purchase freight paid or prepaid.

60
1.2 Specifications Titrator TitroLine® 7500 KF trace
Status Nov 21, 2013
CE sign:
EMC compatibility according to the Council Directive: 2004/108/EG;
applied harmonized standards: EN 61326-1:2006
Low-voltage directive according to the Council Directive 2006/95/EG
Testing basis EN 61 010, Part 1
ETL sign:
Conforms to ANSI/ UL Std. IEC 61010-1
Certified to CAN/ CSA Std. C22.2 No. 61010-1
Country of origin: Germany, Made in Germany
Measurement input: Karl-Fischer (Dead-stop) connector for double platinum electrode
Connector: 2 x 4 mm - sockets.
Measurement
range
Display resolution
Measurement
ac
curacy* without
sensor probe
I [µA]
0 ... 100
0,1
0,2 ±1 Digit
* The measurement uncertainty of the sensor probe has to be taken into account as well
Solutions to be used:
All common and modern Karl-Fischer reagents can be used for the coulometry process.
Display: 3.5 inches -1/4 VGA TFT display with 320x240 pixels.
Electrode inputs:input for double platinum electrode, 2 x 4 mm sockets, colour blue
Input for generator electrode, 2 x 4 mm sockets, colours green and black
Power supply: power supply 90-240 V; 50/60 Hz, power input: 30 VA
Use the Power supply TZ 1853, Type No.: FW 7362M/12 only!
RS-232-C Interface:RS-232-C interface separated galvanically through photocoupler
Daisy Chain function available.
Data bits: adjustable, 7 or 8Bit (default: 8 Bit)
Stop bit: adjustable, 1or 2 Bit (default: 1 Bit)
Start bit: static 1Bit
Parity: adjustable: even / odd / none
Baud rate: adjustable: 1200, 2400, 4800, 9600, 19200 (Default 4800 baud)
Address: adjustable, (0 to 15, default: 01)
RS-232-1 for computer, input Daisy Chain
RS-232-2 devices of SI Analytics, titrator TitroLine6000/7000/7500,
- Burettes TITRONIC500, TITRONIC110 plus, TITRONICuniversal,
- Balances of the types Mettler, Sartorius, Kern, Ohaus
(for other types please contact SI Analytics)
- Exit Daisy Chain
USB Interface: 2 x USB-type A and 1 x USB-type B
USB –Typ B (“slave“) for connecting a PC

61
USB –Typ A (“master“) for connecting:
- USB keyboard
- USB printer
- USB data media e.g. USB stick
- USB Hub
Stirrer connection: 12V DC out,500mA
power supply for stirrer TM 235 or titration stand TM 235 KF
Housing material: Polypropylene
Front keyboard: Polyester coated
Housing dimensions: 15.3 x 18 x 29.6 cm (W x H x D)
Weight: ca. 2.2 kg for basic unit without stirrer TM 235 or TM 235 KF titration stand
Ambient conditions: Ambient temperature: + 10 ... + 40 °C for operation and storage
Humidity according to EN 61 010, Part 1:
Max. relative humidity 80 % for temperatures up to 31 °C,
linear decrease down to 50 % relative humidity at a temperature of 40 °
Software
Measuring range 10 µg – 100 mg / 1 ppm – 5 % (recommended)
Measuring speed Max. 1.5 mg/min
Number methods: 50
Conditioning Automatically with drift determination
End point criteria Drift, stop drift tolerance, min. and maximum titration time
Auto start Yes, after sample allowance
Statistics Mean value, standard deviation and relative standard deviation
Curve printout Measuring unit/time
Documentation GLP compliant on printer or in PDF format (USB- memory stick)

62
Specifications Titration Stand TM 235 KF Status Nov 21. 2013
In connection with the titrator TitroLine 7500 KF trace
CE - Mark
EMV – compatibility according to Council Directive 89/336/EWG;
Transient emissions according to norm EN 50 081, part 1
Interference resistance according to norm EN 50 082, part 2
Low voltage directive according to Council Directive 73/23/EWG
Last amended by directive 93/68/EWG; test criteria EN 61 010, part 1
ETL sign:
Conforms to ANSI/ UL Std. IEC 61010-1
Certified to CAN/ CSA Std. C22.2 No. 61010-1
Country of origin: Germany / made in Germany
Pump: Free volume flow - air-: flow rate 2.25 l / min
Delivery pressure max. 1.5 bar
Flow rate liquid medium ca. 0,8 l / min
Stirring speed: 50 ... 1000 U/min
Hoses: PVC-hose, outer diameter 6 x 1 mm
PTFE- hose, outer diameter 4 x 0.5 mm
Connections
Power supply (top);: Low voltage input 12 V / −on the backside of titration stand
Plug connection: plug for low voltage connection – phone jack-,
Positive pole at pin contact, inside contact ∅= 2,1 mm, USA/Japan,
Power supply via titrator TitroLine 7500 KF trace
Use the Power supply TZ 1855, Type No.: FW 7555o/12 only!
Housing
Material: Polypropylene;
Dimensions: 80 x 130 x 250 mm, H x W x D (height without stand rod)
Weight: 1.0 kg
Ambient conditions:
Not suitable for explosive environments!
Climate: Ambient temperature: + 10 °C ... + 40 °C for storage and transport.
Humidity: According to EN 61 010, part 1:
Maximum relative humidity 80 % for temperatures up to
31 °C,
Linearly decreasing up to 50 % relative humidity
With a temperature of 40 °C

63
1.3 Warning and safety information
The TitroLine® 7500 KF trace corresponds to protection class III. It was manufactured and tested according to
DIN EN 61 010, Part 1, Protective Measures for Electronic Measurement Devices and has left the factory in an
impeccable condition as concerns safety technology. In order to maintain this condition and to ensure safe
operation, the user should observe the notes and warning information contained in the present operating
instructions. Development and production is done within a system which meets the requirements laid down in the
DIN EN ISO 9001 standard.
For reasons of safety, the titrator TitroLine® 7500 KF trace must be opened by authorised persons only; this
means, for instance, that work on electrical equipment must only be performed by qualified specialists.
!
In the case of nonobservance of these provisions the titrator TitroLine® 7500 KF tracemay constitute a
danger: electrical accidents of persons or fire hazard. Moreover, in the case of unauthorised intervention
in the titrator TitroLine® 7500 KF trace as well as in the case of negligently or deliberately caused
damage, the warranty will become void.
!
Prior to switching the device on it has to be ensured that the operating voltage of the titrator TitroLine® 7500 KF
trace matches the mains voltage. The operating voltage is indicated on the specification plate. Nonobservance of
this provision may result in damage to the titrator TitroLine® 7500 KF trace or in personal injury or damage to
property.
If it has to be assumed that safe operation is impossible, the titrator TitroLine® 7500 KF trace has to be put out of
operation and secured against inadvertent putting to operation. In this case please switch the titrator TitroLine®
7500 KF trace off, pull plug of the mains cable out of the mains socket, and remove the titrator TitroLine® 7500
KF trace from the place of work.
Examples for the assumption that a safe operation is no longer possible,
the package is damaged,
the titrator TitroLine® 7500 KF trace shows visible damages,
titrator TitroLine® 7500 KF trace does not function properly,
liquid has penetrated into the casing.
The titrator TitroLine® 7500 KF trace must not be stored or operated in humid rooms.
For reasons of safety, the titrator TitroLine® 7500 KF trace must only be used for the range of application
described in the present operating instructions.
In the case of deviations from the intended proper use of the device, it is up to the user to evaluate the
occurring risks.
!
The relevant regulations regarding the handling of the substances used have to be observed: The
Decree on Hazardous Matters, the Chemicals Act, and the rules and information of the chemicals trade. It has
to be ensured on the side of the user that the persons entrusted with the use of the titrator TitroLine® 7500 KF
trace are experts in the handling of substances used in the environment and in titrator TitroLine® 7500 KF trace
or that they are supervised by specialised persons, respectively.
During all work with titration solutions:
!
Please wear protective glasses!
!
The titrator TitroLine® 7500 KF trace is equipped with integrated circuits (EPROMs). X rays or other high energy
radiation may penetrate through the device’s casing and delete the program.
Please refer also to chapter 8 “Maintenance and Care of the titrator TitroLine® 7500 KF trace.

64
2 Unpacking and First Operation
2.1 Unpacking
The titrator itself as well as all related accessory and peripheral parts have been carefully checked at the factory
to ensure their correct function and size.
. The different TitroLine® 7500 KF trace modules consists of:
•TitroLine® 7500 KF trace basic unit including keyboard, stand rod TZ 1748 and retaining clamp TZ 1749
and power supply.
•Electrode KF 1150
•KF starter kit TZ 1789 with molecular sieve, glass wool and a set of syringes with needles
•For module 1 and 3 only: Magnetic stirrer TM 235 and titration vessel TZ 1751
•For module 2 and 4 only: KF titration stand (pump and stirrer) TM 235 KF including waste (1 L clear
bottle), solvent (1 L amber bottle) and moisture bottle (100 ml) with all tubes. Titration vessel TZ 1754
•For module 1 and 2: Generator electrode TZ 1752 without diaphragm
•For module 3 and 4: Generator electrode TZ 1753 with diaphragm
Please ensure that the small accessories are also removed in full from the packaging. The next images show the
content of module 1 or 3 (with magnetic stirrer):
Fig. 1

65
2.2 Connection and installation of titrator and magnetic stirrer TM 235
The low voltage cable of the power supply TZ 1853 has to be plugged in to the 12 V socket „in“, (see Fig. 12 back
panel, chapter. 2.7), on the back panel of the titrator. Then plug the power supply into the plug socket.
Fig. 2a
Place the power supply easily accessable in order to be able to remove the titrator anytime easily from the power
circuit.
As a rule, the TM 235 magnetic stirrer is arranged to the right of the piston burette. The magnetic stirrer is
connected to the 12V out-socket in the rear panel of the piston burette using the TZ 1577 connection cable
(scope of delivery of the basic device) (cp. ‘Back panel’ illustration, chapter 2.4). The stand rod (scope of delivery
of the basic device) is screwed into the thread; subsequently the Z 305 titration clamp (scope of delivery of the
basic device) is installed (fig. 2b).
Fig. 2b

66
2.3 Installation with magnetic stirrer TM 235 (module 1 and 3)
The titrator TitroLine 7500 KF trace can be mounted on any desired plain basis. Prior to inserting the mains plug,
it must be ensured that the operating voltage of the titrator complies with the mains voltage. Normally, this should
not be a problem since the power pack is designed as a multiple voltage level power pack with a range of 100 –
240 V. Depending on the power socket, the EURO-plug or the US-plug must be connected to the power pack.
UK- and Australian plugs adaptor are available on demand.
!
The titrator TitroLine 7500 KF trace may not be used in explosive environments.
!
As a rule, the TM 235 magnetic stirrer arranged to the right of the titrator.
Fig. 3
Screw the stand rod into the provided nut of the magnetic stirrer
Fig. 3a

67
Mount the retaining clip onto the stand rod
Fig. 4
Clamp the titration vessel onto the retaining clip. Fix the titration vessel in such a way that the bottom of the
titration vessel stands directly at the upper surface of the magnetic stirrer:
Fig. 5

68
Put the indicator electrode KF 1150 and the generator electrode (TZ 1752 or TZ 1753) into the provided openings
NS 7,5 and NS 19 and the electrode cables into the colour-coded socket. The indicator electrode has a fixed
cable with 2 blue plugs. The cable LB 04 NN has a green and black plug and is connected to the provided port of
the generator electrode.
Fig. 6
2.4 Installation with magnetic stirrer/pump TM 235 KF (module 2 and 4)
As a rule, the TM 235 KF magnetic stirrer/pump arranged to the right of the titrator (see fig. 2). Clamp the titration
vessel TZ 1754 onto the retaining clip. Fix the titration vessel in such a way that the bottom of the titration vessel
stands directly at the upper surface of the magnetic stirrer:
Fig. 7

69
Put all white inner plastic adapters to the waste, solvent and moisture bottle. Fill the moisture bottle with
molecular sieve. Connect the PVC and PTFE plastic tubes as shown in the next pictures.
The PVC tubes are connected to the connectors at the back side of the TM 235 KF. The long PVC tube is used
for the connection of the waste bottle. The two shorter PVC ones are used to connect the moisture bottle and the
solvent bottle. The moisture bottle is connected to the right connector (view from above) of the TM 235 KF. The
waste (clear) bottle is connected to the left connector.
Fig. 8
Put the threaded pipe with the NS 14/23 core and the GL 14-thread in one of the NS-14.5-openings. Put both
PTFE-tubes through both bore holes of the septum. The PTFE tube from the clear waste bottle is adjusted to the
bottom of the titration vessel (tube 1). Put the PTFE tube from the solvent bottle (tube 2) is adjusted as shown in
the next two pictures:
Fig. 9

70
Put the other end of the PTFE-tube, which touches the bottom of the titration vessel (tube 1), through the opening
on the cap of the clear square bottle (-> waste bottle). Put the other PTFE tube (tube 2) through the opening of
the cap of the brown reagent bottle. Adjust the dosage and the disposal tubes as depicted in Fig. 10. Then seize
the screwing with the tubes on the bottles
Put the indicator electrode KF 1150 and the generator electrode (TZ 1752 or TZ 1753) into the provided openings
NS 7,5 and NS 19 and the electrode cables into the colour-coded socket. The indicator electrode has a fixed
cable with 2 blue plugs. The cable LB 04 NN has a green and black plug and is connected to the provided port of
the generator electrode. The keyboard is connected to one of the USB –A ports.
The keyboard is connected to to one of the USB –A (host) ports.
Connect the titration stand or magnetic stirrer and the titrator with the provided low voltage cable TZ 1577.
Fig. 10
Fill the KF anolyte into the brown 1 l-reagent bottle. You can also connect the GL 45 adaptor directly to the
anolyte bottle (recommended) if it has a GL-45 –thread.
Working with the titration stand
•Dosage: Pump the anolyte into the titration vessel by pressing the front part of the rocker switch. As long
as you press the button the dosing process proceeds.
•Siphon off: Siphon off the solution from the titration vessel by pressing the back part of the rocker switch.
As long as you press the button it will be siphoned off.
Note: Mind the fill level of the waste bottle. Before you siphon off the titrating solution please make sure that the
disposal bottle can absorb this amount of solution.
The built-in magnetic stirrer stirs the liquids in the titration vessel. You can adjust the stirring speed at the turning
knob at the right upper side of the titration stand or magnetic stirrer.
Troubles
Problems might occur if the tubes are not connected properly or the pressure / low pressure system has a
leakage. Then, after a few seconds operating time of the pump, no reagents will be conveyed anymore. When
checking the tubes please observe that the bottle screwing and all adaptors are leak-proof. The same applies to
the tube connections of the drying bottle.
Note: Buckled tubes cause incorrect dosages and also the siphon off process does not work properly. Please
check the tubes and their connections for leak-tightness on a regular basis. Replace if necessary.

71
If the reagents continue to run in from the storage bottle after the actual dosage process has ended, position the
bottle at lower level than the titration vessel. If the reagents continue to run in from the storage bottle between the
dosage process and the siphon off process, please wait a few seconds between the changes.
We recommend to remove the glass adaptor with the dosing and exhaust hose after adding the KF-
anolyte and to close the ground-in opening with the provided die glass stopper NS 14.5.
2.5 Filling the Titration Vessel
Fill the titration vessel approx. up to a half with anolyte that are suitable for the respective application using a
funnel (Module 1 and 3). You can even use the pump for modules 2 and 4. If you use a generator electrode with
diaphragm (included in delivery with module 3 and 4), it is necessary to fill an ampoule with catholyte into the
generator electrode. Here, please use a syringe with needle:
Fig. 11
2.6 Switch on Device, First Conditioning
Set the stirring speed at the TM 235/TM 235 KF to achieve an efficient stirring without creating air bubbles Don’t
forget magnetic stirring bar!. Now switch on the device. The mains switch is situated on the left at the back side of
the TitroLine 7500 KF Trace. As soon it is turned on the TitroLine 7500 KF trace starts the conditioning process.
If the anolyte has freshly been filled in, the conditioning can take up to 10-20 minutes for generator electrodes
without frit and sometimes a few hours for generator electrodes with frit. The drift display is then > 1500 µg/min. If
the drift has fallen < 10 µg/min, the TitroLine 7500 KF trace is ready for first measurements.

72
2.7 Connecting the Titrator - Combination with Accessories and Additional Devices
2.7.1 Back panel of the titrator TitroLine® 7500 KF trace
Fig. 12
2.7.2 Connection ports of the TitroLine® 7500 KF trace
The TitroLine® 7500 KF trace is equipped with the following connections:
1) µA measurement input for the connection of double platinum electrodes (KF 1100 or Pt 1200, Pt 1400)
2) USB-B interface for connection to a PC
3) On/Off switch
4) Two USB-A (“Master“) interfaces for connecting USB devices such as a keyboard, printer, manual control
unit, USB memory device etc.
5) ”in“: Connection of the external power pack
6) “out“: Connection of the TM 235 KF titration stand or TM 235 magnetic stirrer
7) Two RS232 ports, 4-channel (Mini-DIN):
RS1 for connection to the PC
RS2 for connection of a weighing balance and other devices from SI Analytics
8) Inputs for the generator electrode, coloured green and black
2.7.3 Connecting a printer
Printers with a USB interface are to be connected to one of the two USB-A interfaces. These printers have to
feature HP PCL emulation (3, 3GUI, 3 enhanced, 5, 5e). So-called GDI printers cannot be used!
Alternatively the thermo-compact printer Seiko S445 can be connected.
2.7.4 Connecting a USB device (manual controller, keyboard, memory device, hub)
The following USB devices can be connected to the USB-A interfaces:
•PC-keyboard
•TZ 3880 manual controller (in the following: ”mouse“)
•Printer
•USB storage devices, e.g. USB sticks
•USB hub
•USB barcode scanners
8
1
3
4
5
6
7
2

73
2.7.5 Connection of analytical balances
Analytical balances are to be connected to the RS232-2 using an appropriate cable
2.8 Setting the Language of the Country
The ex-factory default language setting is English. When the piston burette is switched on, the main menu will
appear once the boot sequence is completed:
Fig. 13
Using <SYS/<F7> or <MODE>, followed by <System settings> you navigate to the system settings. The very first
menu is to be used for setting the language of the country:
Fig. 14
Use <ENTER>/<OK> to call the menu. Select the national language using the <↑↓> arrow keys, confirm it with
<ENTER>/<OK>:
Fig. 15
The selected language will appear immediately. Pressing the <ESC> key twice will return the user to the main
menu.

74
3 Working with the Titrator TitroLine® 7500 KF trace
3.1 Front Keyboard
Apart from alphanumeric input (a-z, A-Z, 0-9) and a few other functions, almost all functions can be performed
using the front keyboard.
<Mode>: Methods selection and system settings
<EDIT>: Changing the current method, new method, copy, print and delete method
<ESC>: <ESC> will take you back to the previous menu level.
<START>: Start and Stop of a current method
The individual functions are described in detail in Chapter 3.4, External PC Keyboard.
3.2 Display
The display consists of a graphical LCD display with a resolution of 320 x 240 pixels.
It also offers the possibility to display graphics, e.g. the measuring curve while or after the titration is/was running: