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  Warning and safety information  

1.4

The device 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 control 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 device must only be used for the range of application described in the present 

operating  manual.  Nonobservance  of  the  intended  proper  use  of  the  device  may  result  in  personal  injury  or 
damage to property. 

 For reasons of safety, the devics and the power supply must be opened by authorised persons only; this 

means, for instance, that work on electrical equipment must only be performed by qualified specialists. 

In case 

of  nonobservance  of  these  provisions  the  titrator  and  the  power  supply  may  constitute  a  danger: 
electrical  accidents  of  persons  or  fire  hazard! 

Moreover,  in  the  case  of  unauthorised  intervention  in  the 

titrator or the power supply, 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 matches the mains voltage. 

The  operating  voltage  is  indicated  on  the  specification  plate  (underside  of  the  device  and  backside  of  the 
power  supply). 

Nonobservance  of  this  provision  may  result  in  damage  to  the  titrator  and  the  power 

supply, or in personal injury or damage to property! 

 

If it has to be assumed that safe operation is impossible, the device has to be put out of operation 

and secured against inadvertent putting to operation.

 In this case please switch the device off, pull plug of 

the mains cable out of the power supply, and remove the device from the place of work. 

Examples for the assumption that a safe operation is no longer possible, 

 

if the package is damaged, 

 

if the device shows visible damages, 

 

if the power supply shows visible damages, 

 

if the device does not function properly, 

 

if liquid has penetrated into the casing, 

 

if the unit has been altered technologically or if unauthorized personnel tried or succeeded to open the 
device as attempt to repair it. 

 

In case that the user operates such a device, all thereof resulting risks are on the user! 

 The device must not be stored or operated in humid rooms. 

 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.  On 
the part of the user it has to be ensured that the persons entrusted with the use of the unit are experts in the 
handling  of  substances  used  in  the  environment  or  that  they  are  supervised  by  specialized  persons, 
respectively. 

 For all work with chemicals: 

Always

 

wear protective glasses!

 Please observe the memorandums of the 

employer's liability insurance associations and the safety data sheets of the manufacturers. 

 

Summary of Contents for TW 7450

Page 1: ......

Page 2: ...Version dieser Gebrauchsanleitung finden Sie auf unserer Webseite Die deutsche Fassung ist die Originalversion und in allen technischen Daten bindend Operating Manual Page 19 34 Important notes The op...

Page 3: ...the TW 7450 25 2 2 System Preparations 26 2 3 2 3 1 Connection of the titration tower 26 2 3 2 Mounting the titration head 27 2 3 3 Electrodes titration tips stirrers 28 2 3 4 Using the sample changer...

Page 4: ...Copyright 2022 Xylem Analytics Germany GmbH Reprinting even as excerpts is only allowed with the explicit written authorization Germany Printed in Germany...

Page 5: ...The menu screens shown in this operating manual serve as an example and may differ from what you see Intended Use 1 2 The titration sample changer allows serial titrations with automatic sample change...

Page 6: ...er code TZ No 150 ml with spout low form 285216747 TZ 1784 150 ml with spout low form Super Duty 285202008 TZ 1788 250 ml with spout tall form 285201997 TZ 1787 250 ml with spout low Form Super Duty 2...

Page 7: ...g voltage is indicated on the specification plate underside of the device and backside of the power supply Nonobservance of this provision may result in damage to the titrator and the power supply or...

Page 8: ...e scope of delivery The unit can be placed on any flat surface Fig 1 Sample changer and cartons in delivery condition In the two boxes there are 4 plastic bags with various accessories Bag 1 with powe...

Page 9: ...e TW 7450 has the following connections 1 Power switch 2 Connecting the power supply unit 3 USB B connection for communication with the titration software TitriSoft 4 COM interface 2 not used 5 COM in...

Page 10: ...nger Fig 7 and fasten it with the four black screws Fig 8 Fig 7 and Fig 8 Mounting the titration tower Mount the cable guide of the titration tower on the rear side at the designated fixing points usi...

Page 11: ...wed together titration head Fig 12 is placed on the titration tower Fig 15 or Fig 16 by means of the pins and fixed by the screw 4 Option B for titration heads TZ 3969 and TZ 3974 2 3 2 2 The TZ 3974...

Page 12: ...stirrer socket on the back of the sample changer The stirring speed can be adjusted by software commands The cables required for the operation of the titration head are attached to the power supply o...

Page 13: ...the USB cable to a free USB A interface of the computer the USB driver is either automatically loaded via the Internet the PC must be connected to the Internet for this or the USB driver on the Titri...

Page 14: ...ameters are available on request Custom made racks for sample vessels with other diameters are available on request Fig 21 The sample racks are numbered with the corresponding positions and are loaded...

Page 15: ...ress and is connected directly to the PC via USB or the RS 232 cable supplied The sample changer is controlled with the following RS parameters Baudrate 9600 Parity No Start bits 8 Stop bits 1 Command...

Page 16: ...32 6 Coordinates of the sample rack Table 1 Coordinates of the 42 position rack Table 2 Coordinates of the 48 position rack...

Page 17: ...repaid 8 Storage and transportation If the titration sample changer TW 7450 has to be stored over some time or to be dislocated the use of the original packing will be the best protection of the devic...

Page 18: ...34 10 EC Declaration of Conformity The corresponding declaration of conformity of the device can be found on our homepage It will also be made available to you on request...

Page 19: ......

Page 20: ...ifi es pour le produit sont respect es Certificado del fabricante Certificamos que el aparato arriba mencionado ha sido controlado de acuerdo con la norma DIN EN ISO 9001 secci n 8 2 4 Seguimiento y m...

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