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Table of Contents
Related Manuals for Metrohm 888 Titrando
Summary of Contents for Metrohm 888 Titrando
- Page 1 888 Titrando Manual 8.888.8004EN / 2020-03-03...
- Page 3 Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com 888 Titrando Manual 8.888.8004EN / 2020-03-03...
- Page 4 Technical Communication Metrohm AG CH-9100 Herisau techcom@metrohm.com This documentation is protected by copyright. All rights reserved. This documentation has been prepared with great care. However, errors can never be entirely ruled out. Please send comments regarding possible errors to the address above.
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Page 5: Table Of Contents
Connecting a pH, metal or ion-selective electrode ....24 3.5.2 Connecting a reference electrode .......... 25 3.5.3 Connecting a polarizable electrode ........25 3.5.4 Connecting a temperature sensor or an electrode with inte- grated temperature sensor ............. 26 ￭￭￭￭￭￭￭￭ 888 Titrando... - Page 6 Differential potentiometry ............30 4 Working with the exchange unit 5 Operation and maintenance General notes ..............33 5.1.1 Care ..................33 5.1.2 Maintenance by Metrohm Service .......... 33 6 Troubleshooting General ................34 SET titration ................ 35 6.2.1 ..................... 35 7 Appendix Remote interface ..............
- Page 7 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures Table of figures Figure 1 The Titrando system ................1 Figure 2 Front 888 Titrando ................8 Figure 3 Rear 888 Titrando ................9 Figure 4 Connecting the Touch Control ............11 Figure 5 Connecting the computer ..............14 Figure 6 MSB connections ................
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Page 9: Introduction
A Titrando system can contain numerous, various kinds of instruments. The following figure provides an overview of the peripheral devices you can connect to the 888 Titrando. Computer Sensors USB Sample Processor... -
Page 10: Instrument Description
￭ An internal dosing drive for exchange units. MSB connectors ￭ Four MSB connectors (Metrohm Serial Bus) for connecting dosing devi- ces (Dosimat with exchange unit or Dosino with dosing unit), stirrers, titration stands and Remote Boxes. USB connectors ￭... -
Page 11: Titration Modes - Measuring Modes - Dosing Com- Mands
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction Titration modes – Measuring modes – Dosing com- mands The 888 Titrando supports the following titration modes, measuring modes and dosing commands: ￭ Dynamic equivalence point titration. The reagent is added in variable volume steps. Measuring modes: –... -
Page 12: About The Documentation
File ▶ New Menu or menu item [Next] Button or key WARNING This symbol draws attention to a possible life-threat- ening hazard or risk of injury. WARNING This symbol draws attention to a possible hazard due to electrical current. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 13: Safety Instructions
1.5.2 Electrical safety The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010. WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 14: Working With Liquids
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. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 15: Flammable Solvents And Chemicals
The correct disposal of your old instrument will help to prevent negative effects on the environment and public health. More details about the disposal of your old instrument can be obtained from your local authorities, from waste disposal companies or from your local dealer. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 16: Overview Of The Instrument
S ta tu s 8 8 8 T i t r a n iT ro de re ad Figure 2 Front 888 Titrando Guide openings Piston rod For centering the exchange unit. Moves the piston of the exchange unit up and down. -
Page 17: Figure 3 Rear 888 Titrando
USB Sample Processor, etc. Connector (Controller) MSB connector (MSB 1 to MSB 4) For connecting a Touch Control or a PC with Metrohm Serial Bus. For connecting external installed PC software. Mini DIN, 9-pin. dosing devices, stirrers or Remote Boxes. Mini DIN, 9-pin. -
Page 18: Installation
Two different versions are available for operating the 888 Titrando: A Touch Control with touch-sensitive screen. It forms a "stand-alone ￭ instrument" together with the 888 Titrando. A computer enables operation of the 888 Titrando with the help of a ￭ PC software, e.g. tiamo. CAUTION... -
Page 19: Figure 4 Connecting The Touch Control
Automatic system tests are performed on both instruments at the time of activation. The On LED on the front of the Titrando lights up when the system test has been completed and the instrument is ready for operation. ￭￭￭￭￭￭￭￭ 888 Titrando... - Page 20 Unplug the power plug immediately if you suspect that moisture has ￭ gotten inside the instrument. Only personnel who have been issued Metrohm qualifications may ￭ perform service and repair work on electrical and electronic parts. Connecting the power cord...
- Page 21 3.2.1.3 Connecting a computer The 888 Titrando requires a USB connection to a computer in order to be able to be controlled by a computer software. Using a 6.2151.000 con- troller 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 instrument.
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Page 22: Figure 5 Connecting The Computer
3 Follow the instructions of the installation wizard. The "On" LED on the 888 Titrando lights up when the driver installa- tion has been completed and the instrument is ready for operation. If problems should occur during installation, contact your company's IT support team. -
Page 23: 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 con-... -
Page 24: Connecting A Dosing Device
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 device. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 25: Connecting A Stirrer Or Titration Stand
MSB on the rear of the control instrument. 804 Ti Stand only: Connect the rod stirrer to the stirrer connector ￭ (socket with stirrer symbol) of the titration stand. Start the control software. ￭ ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 26: 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. -
Page 27: Connecting Usb Devices
3.4.1 General The 888 Titrando has two USB connectors (type A sockets) for peripheral devices with USB interfaces. The Titrando functions as a USB hub (distribu- tor) 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. -
Page 28: Connecting A Usb Hub
3.4 Connecting USB devices CAUTION If you operate the 888 Titrando 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 888 Titrando, you should exit the program before you set up or disconnect the USB connections. -
Page 29: Connecting A Balance
– You will need the 6.2148.050 USB/RS-232 adapter to connect a balance. The following table offers an overview of the balances that you can use together with the 888 Titrando and of which cable you will need for con- nection to the RS-232 interface: Balance... -
Page 30: Connecting A Pc Keyboard (Only For Operation With Touch Control)
Connect the balance as follows: 1 Plug in the USB plug of the USB/RS-232 adapter at the USB connec- tor of the 888 Titrando. 2 Connect the RS-232 interface of the USB/RS-232 adapter with the RS-232 interface of the balance (see table for cable). -
Page 31: Connecting A Barcode Reader
Connect the barcode reader as follows: 1 Insert the USB plug of the barcode reader into one of the USB sock- ets of the 888 Titrando. 2 Switch on the Touch Control. The barcode reader is recognized automatically and entered in the device manager. -
Page 32: Connecting Sensors
3.5.1 Connecting a pH, metal or ion-selective electrode Connect the pH, metal or ion-selective electrode as follows: 1 Plug the electrode plug into the Ind. socket of the 888 Titrando. Figure 12 Connecting a pH, metal or ion-selective electrode ￭￭￭￭￭￭￭￭... -
Page 33: Connecting A Reference Electrode
3.5.2 Connecting a reference electrode Connect the reference electrode as follows: 1 Plug the electrode plug into the Ref. socket of the 888 Titrando. Figure 13 Connecting a reference electrode 3.5.3 Connecting a polarizable electrode Connect the polarizable electrode as follows: 1 Plug the electrode plug into the Pol. -
Page 34: Connecting A Temperature Sensor Or An Electrode With Integrated Temperature Sensor
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 the iConnect The external measuring interface 854 iConnect can be connected to the iConnect connector. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 35: Figure 16 Plugging In The Mini Usb Adapter Cable
The 854 iConnect can also be connected while the instrument is switched 1 Plug the plug of the 854 iConnect (3) into the socket of the mini USB adapter cable (2). Observe the correct orientation (markings). Figure 17 Plugging in the 854 iConnect ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 36: Figure 18 Removing The Protective Cap
Removing the protective cap 2 Align the guide pin (5) of the electrode with the recess in the 854 iConnect (4). Figure 19 Aligning the guide pin 3 Attach the electrode to the 854 iConnect. Figure 20 Attaching the electrode ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 37: Figure 21 Unplugging The 854 Iconnect
2 Leave the mini USB adapter cable (2) plugged into the socket of the instrument (1). NOTICE Position the mini USB adapter cable in such a way that it cannot be removed by accident. NOTICE For further information on the 854 iConnect, see Manual iConnect 854, article number 8.854.8002. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 38: Differential Potentiometry
If no reliable measurements are possible with these, then a 6.5104.030 (230 V) or 6.5104.040 (115 V) dif- ferential amplifier can be used. The differential amplifier is connected to the high-ohm measuring input (Ind.). ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 39: Working With The Exchange Unit
Figure 22 Attaching the exchange unit Proceed as follows to attach the exchange unit: 1 Attach the exchange unit from the front onto the 888 Titrando and push it all the way to the rear. It must snap in audibly. - Page 40 An intelligent exchange unit has been ￭ attached and the data on the integrated data chip is currently either being read out or writ- ten. rapid flashing Error on the dosing drive, consult the "Trouble- shooting" chapter. ￭￭￭￭￭￭￭￭ 888 Titrando...
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Page 41: Operation And Maintenance
5.1.2 Maintenance by Metrohm Service Maintenance of the 888 Titrando is best carried out as part of an annual service, which is performed by specialist personnel of the Metrohm com- pany. A shorter maintenance interval may be necessary if you frequently work with caustic and corrosive chemicals. -
Page 42: Troubleshooting
3. Attempt once more to remove the exchange unit; perform maintenance on it afterwards (see the manual for the exchange unit). The dosing drive is overloa- 1. Switch the control instrument off and then ded because the piston is back on again. jammed. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 43: Set Titration
Remedy 2. Remove and clean the exchange unit (see the chapter in the manual for the exchange unit, "Care and upkeep"). 3. Contact your local Metrohm Service department if necessary. The data of the exchange Contact your local Metrohm Service ￭... - Page 44 The results are The minimum dosing rate is Select user-defined titration rate and decrease spread widely. too high. the minimum rate (see manual/help of the software used). The electrode responds too Replace the electrode. slowly. ￭￭￭￭￭￭￭￭ 888 Titrando...
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Page 45: Appendix
For connecting instruments with a remote interface. 7.1.1 Pin assignment of the remote interface Figure 24 Pin assignment of remote socket and remote plug The above figure of the pin assignment applies for all Metrohm instru- ments with 25-pin D-Sub remote connector. ￭￭￭￭￭￭￭￭ 888 Titrando... - Page 46 Stop Input 2 Input 3 Quit Input 4 – Input 5 Input 6 Input 7 Output 0 Ready Output 1 Conditioning OK Output 2 Determination Output 3 Output 4 Output 5 Error Output 6 Warning Output 7 ￭￭￭￭￭￭￭￭ 888 Titrando...
- Page 47 The instrument performs a data-generating determination. End of Determination. Pulse (t = 200 ms) after a determination or pulse after a buffer/standard solution during calibration using a Sample Processor. Error The line is set for error message display. ￭￭￭￭￭￭￭￭ 888 Titrando...
- Page 48 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 7.1 Remote interface Function Explanation Warning The line is set for warning message display. ￭￭￭￭￭￭￭￭ 888 Titrando...
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Page 49: Technical Specifications
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 8 Technical specifications 8 Technical specifications Measuring interface The 888 Titrando has one galvanically isolated measuring interface. The measuring cycle is 100 ms for all measuring modes. 8.1.1 Potentiometry One high-ohm measuring input (Ind.) for pH, metal or ion-selective elec- trodes and one measuring input (Ref.) for separate reference electrodes. -
Page 50: Polarizer
Determination with adjustable polarization voltage Measuring mode Upol Polarization –1,225 - +1,225 mV (increment: 25 mV) voltage –1,250 - +1,250 mV: non-guaranteed values, dependent on reference voltage +2.5 V –120 - +120 µA Measuring range Resolution 0.1 µA ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 51: Internal Dosing Device
–20 - +60 °C Transport –40 - +60 °C Reference conditions Ambient tempera- +25 °C (±3 °C) ture ≤ 60 % Relative humidity Instrument status Instrument in operation at least 30 min Validity of the After adjustment data ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 52: Dimensions
USB ports 2 USB downstream ports (type A sockets), 500 mA each, for connect- ing peripheral devices such as printers, keyboards, barcode readers or RS-232/USB boxes (Metrohm order no. 6.2148.020). "Controller" connector Controller port USB upstream port with auxiliary power supply (Mini DIN socket) for connecting Touch Control or computer for controlling the 888 Titrando. -
Page 53: Accessories
The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ￭￭￭￭￭￭￭￭ 888 Titrando... -
Page 54: Index
MEAS ........3 Touch Control Touch Control ..... 11 MET ........... 3 Connect ......11 USB hub ......20 Metrohm Serial Bus MSB, see also Connector "MSB" ........15 MSB ........2 Update USB ........2 Connect devices ....15 Device software ....
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