Metrohm 787KF User Manual

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787 KF Titrino

Program version 5.787.0010

Instructions for Use

8.787.1003 03.2002 / pkl

Table of contens

1 Introduction ..........................................................................................................1

1.1 Instrument description...........................................................................................1

1.2 Controls and parts................................................................................................. 2

Manual operation..................................................................................................6

2.1 Keypad ..................................................................................................................6

2.2 Principle of data input............................................................................................ 7

2.3 Tutorial ................................................................................................................... 8

2.3.1 Entering data, setting the dialog language....................................................8

2.3.2 Titer determination .......................................................................................10

2.3.3 Karl Fischer titration .....................................................................................15

2.3.4 Drift...............................................................................................................16

2.4 Selection of the mode, key <MODE> ................................................................ 18

2.5 Configuration, key <CONFIG>...........................................................................19

2.6 Parameters, key <PARAM> ............................................................................... 22

2.6.1 Parameters for SET ...................................................................................... 22

2.8 Result calculations............................................................................................... 31

2.9 Drift display, key <DRIFT> ................................................................................. 36

2.10 Data output ...................................................................................................... 37

Error messages, Troubleshooting.....................................................................39

3.1 Error and special messages................................................................................ 39

3.2 What can you do if the data transfer does not work?.......................................... 41

3.3 Diagnosis............................................................................................................. 42

3.3.1 General......................................................................................................... 42

3.3.2 Procedure..................................................................................................... 42

3.3.3 Equipment required: ....................................................................................43

3.3.4 Diagnosis steps ...........................................................................................43

3.4 Initialise and test RAM ......................................................................................... 52

3.5 Releasing a locked spindle with inserted Exchange Unit.................................... 53

Preparations .......................................................................................................53

4.1 Setting up and connecting the instruments ........................................................53

4.1.1 Titrino with Titration Stand or Stirrer .............................................................53

4.1.2 Connection of a printer ................................................................................54

4.1.3 Connection of a balance..............................................................................55

4.1.4 Connection of a KF Oven............................................................................. 57

4.1.5 Connection of the 774 Oven Sample Processor.......................................... 57

4.1.6 Connection of a Sample Changer ...............................................................58

4.1.7 Connection of a recorder ............................................................................. 59

4.1.8 Connection of a computer ........................................................................... 60

4.2 Connection of electrodes, preparing titration vessel...........................................61

Appendix.............................................................................................................63

5.1 Technical specifications ......................................................................................63

5.2 Pin assignment of the "Remote" socket............................................................... 65

5.2.1 Lines of the "Remote" socket during the titration ......................................... 67

5.3 RS232 interface ...................................................................................................68

787 KF Titrino

Table of contents

5.4 Validation / GLP................................................................................................... 69

5.5 Warranty and conformity ..................................................................................... 70

5.5.1 Warranty....................................................................................................... 70

5.5.2 EU Declaration of conformity....................................................................... 71

5.5.3 Certificate of Conformity and System Validation ......................................... 72

5.6 Scope of delivery and ordering designations ..................................................... 73

Index...........................................................................................................................77

787 KF Titrino

1.1 Instrument description

1 Introduction

1.1 Instrument description

The 787 KF Titrino is a fast and precise titrator for the water determination according to Karl Fischer. With the Metrodata VESUV Software determination data can be saved on a PC.

787 KF Titrino

1.2 Controls and parts

Front view of instrument:

787 KF Titrino

1.2 Controls and parts

1 Exchange Unit

2 Display

3 Setting of display contrast

4 Controls the dosing rate during manual dosing with <DOS> and subse-

quent filling

5 Control keys and indicator lamps on the Titrino

Key <DOS> Dosing key. Dispensing is performed as long as <DOS> is being

pressed. Used e.g. to prepare the Exchange Unit. The dispensing rate can be set with potentiometer (4).

Key <STOP/FILL> - Stops procedures, e.g. titrations, conditioning.

- Filling after manual dosing with <DOS>.

Key <START> Starts procedures, e.g. titrations, conditioning.

Identical with key <START> of the separate keypad. Indicator lamp: "Cond." Lamp flashes during conditioning. Lamp is on when the titration

cell is conditioned.

787 KF Titrino

1.2 Controls and parts

Rear view of instrument:

787 KF Titrino

1.2 Controls and parts

6 RS232 interface

for the connection of printer, balance or a computer

7 Remote lines

(input/output) for the connection of Sample Changers, robots etc.

8 Connection for the KF electrode

9 Connection for separate keypad

10 Analog output for the connection of a recorder

11 Connection for power cable

With power supplies where the voltage is subject to severe HF disturbances, the Titrino should be operated via an additional power filter, e.g. Metrohm 615 model.

12 Mains switch

13 Earthing socket

14 Connection for Ti Stand or stirrer

703 Ti Stand or 728 Magnetic Stirrer Supply voltage: 9 VDC (I ≤ 200 mA)

15 Display of the set mains voltage

Before switching on for the first time, check that the set mains voltage matches the voltage of your power supply. If this is not the case, disconnect mains cable and change voltage.

16 Rating plate

with fabrication, series and instrument number

787 KF Titrino

2.1. Keypad

2 Manual operation

2.1 Keypad

CONFIG Configuration, see page 19. PARAM Parameters, see page 22. CALC DATA Result calculation, see page 31. These keys are opening the corresponding menus.

For the principle of data input see page 7.

DRIFT ON/OFF switching of the drift display,

see page 36.

UNIT Unit of result and sample size, see

page 34.

SELECT Selection of special values (dialog

marked with ":") MODE Mode selection, see page 18. PRINT Printing of reports, see page 37. CLEAR Clears values, set special values. ENTER Stores values. STOP Stops methods. QUIT Quits inquiries, waiting times, printing. START Starts methods.

787 KF Titrino

2.2 Principle of data input

KFT ********

KFT ******** >KF device settings

KFT ******** >peripheral units

KFT ******** send to: IBM

KFT ******** >auxiliaries

KFT ********

• The first line of the display always shows the active mode (in this case "KFT") and the state of the Titrino. "********" means the Titrinos is in its standby state.

• The keys <CONFIG>, <PARAM> and <CALC DATA> are opening the corresponding menus.

• Pressing one of this keys shows the first group of inquiries of the corresponding menu in the second line of the display.

Example key <CONFIG>: You opened the configuration menu, the second line of the display shows the first group of inquiries of this menu ">KF device settings".

• By pressing <CONFIG> repeatedly you can move to the other titles of this menu. With pressing <CONFIG> 2 times you go to the group of inquiries "peripheral units".

• If a dialog text is marked with ">", it contains a group of inquiries. You branch into this group by pressing <ENTER>.

• Example first inquiry of the group "peripheral units": Now you opened the first inquiry of the group peripheral units in the configuration menu and you can change the setting.

If a dialog text of an inquiry is marked with ":", you can select a value with the key <SELECT>.

• A value is stored with <ENTER> and the cursor moves to the next inquiry.

• Repeated pressing of <ENTER> moves you through the inquiries of the group ">peripheral units“, after the last inquiry of this group you leave this group and return to the level above. The next group of the menu "configuration“ appears: ">auxiliaries“

• With key <QUIT> you leave an inquiry or a group of inquiries, it always

• In this example you leave the menu "configuration" by pressing <QUIT> and return to the standby state with the display of the titration mode.

moves you one level up.

787 KF Titrino

2.3. Tutorial

2.3 Tutorial

This short operating course teaches you to work quick and efficient with the 787 KF Titrino, by means of the most important applications.

Set up your Titrino and connect the peripheral devices needed, see chapter 4.

2.3.1 Entering data, setting the dialog language

We can thus make a start and first take a look at the fundamentals of the entry of data. We change the dialog language.

KFT ********

KFT ******** >KF device settings

3 × <CONFIG>

KFT ******** >auxilliaries

<ENTER>

KFT ******** dialog: english

KFT ******** dialog: español

<ENTER>

KFT ******** fecha 2002-03-27

• Switch on the Titrino. It is now in the standby state, it shows you the active mode.

• Press the key <CONFIG>, the display shows:

This is the title of the group "KF device settings". This group contains various inquiries for the KF titraton.

• Press <CONFIG> 3 times. You see the titles of the other groups of inquiries in the configuration menu. The display shows

This "auxiliaries" group contains the inquiry for the dialog language.

• Pressing the <ENTER> key takes you to the inquiries of the group "auxiliaries". Note the ">" sign. All titles of inquiry groups are prefixed by this sign.

This is the first inquiry of the "auxiliaries" group: the selection of the dialog language.

• You select the various dialog languages with the <SELECT> key. Press <SELECT> repeatedly until "español" appears in the display. Note the sign ":". It appears if the values can be selected with the key <SELECT>.

• Accept the new "value" with <ENTER>. The next inquiry "fecha" (date) of the group "ajustes varios" (auxiliaries) is shown.

You can open this inquiry by pressing <ENTER> too and go through all the inquiries of this group this

787 KF Titrino

2.3 Tutorial

<QUIT>

KFT ******** >ajustes varios

<QUIT>

KFT ********

way. Because this inquiry follows no colon ":" the value can't be selected by <SELECT>, the date "fecha" has to be entered with the numeric keys.

• Exit the inquiries with <QUIT>. You are one level higher in the "configuration" menu showing the title "ajustes varios" (auxiliaries).

• Press <QUIT> once again to exit the "configuration" menu and return to the standby state.

All the dialog texts will now be displayed in Spanish. If you prefer English as the displayed dialog language, proceed as before and select "English".

787 KF Titrino

2.3. Tutorial

2.3.2 Titer determination

Set up your titration vessel, see page 61f and plug your KF electrode into the measuring input ('KF electr.'). Put a Exchange Unit with KF reagent on the Titrino and rinse the tubing and the buret tip with <DOS>. Fill the buret again with <STOP/FILL>. Fill your titration vessel with solvent, put a stirrer bar in the titration vessel and switch on the stirrer.

For the titer determination you need water and a syringe that allows the exact dispensing of 30 µL.

Selection of the mode

<MODE>

KFT ******** TITER with H2O or Std.

<ENTER>

TITER ********

Briefly check a few settings under the <PARAM> key:

2 × <PARAM>

TITER ******** >preselections

<ENTER>

TITER ******** conditioning: ON

<ENTER>

TITER ******** req.ident: OFF

<ENTER>

TITER ******** req.smpl size: ON

<ENTER>

TITER ******** report: OFF

• Press <MODE> repeatedly until "TITER with H2O or std." appears in the display.

• Confirm "TITER with H2O or std." with <ENTER>.

The mode "TITER" is active and instrument is in its standby state

• Press <PARAM> twice so that the title "preselections" appears in the display:

View the individual inquiries of this group with <ENTER>. The following values should be set:

Automatic drying of the titration cell before and between titrations: "ON".

Request of the sample identification after the titration start: "OFF".

Request of the sample size after the titration start: "ON".

If no printer is attached, the report printout after the titration must be switched off.

787 KF Titrino

2.3 Tutorial

TITER ******** report: short

With a connected printer, the short report, for example, can be selected.

<ENTER>

If you have to alter one of these settings, you can do this with the <SELECT> key.

Your titration vessel already contains solvent. Start with <START>. First the titrations cell is dried. The display shows

TITER wait

as long as the vessel is still wet and the green "Cond." lamp flashes. As soon as the titration vessel is dry and hence ready for operation, this is shown by

TITER conditioning

an the "Cond."-LED lights continuously.

To determine the titer we shall perform several titrations and store the mean value as "titer".

Calculating the mean value and standard deviation

Check that the mean value calculation is switched on:

2 × <CALC DATA>

TITER ******** >statistics

<ENTER>

TITER ******** mean: n= 20

2 × <QUIT>

• Press <CALC DATA> twice until the display shows

the title of the group is "statistics". Press <ENTER>.

Number of single determinations for the calculation of the mean value. Since the mean value is recalculated after every determination, the maximum value can remain set at 20. The mean calculation is terminated when the operating mode is changed.

• Exit the inquiry.

787 KF Titrino

2.3. Tutorial

Determination

<START>

KFR volume 0.000 ml smpl size 1.0 g

0.03

<ENTER>

KFR volume ↑ 1.426 ml #======

KFR volume 5.632 ml titer 5.3267 mg/ml

• Now prepare the sample, e.g. 30 µL water and start the titration with <START>. The display shows

• Inject the sample and enter the weight in g:

If you have connected a balance, you can also backweigh the syringe.

The titration now runs. The first line of the display shows the current volume. In addition, a "↑" appears when dispensing is being performed. A "control bar" appears on the second line and shows the control deviation of the current measured value from the set endpoint.

On completion of the titration, the first line shows the dispensed volume and the second the calculated titer.

If you have connected a printer, a report is also printed:

date 2002-03-27 time 13:55:10 3 smpl size 0.03 g titer 5.3267 mg/ml ============

Perform another determination.

On completion of the titration, the mean value of the two determinations is calculated. The report on the printer has the following appearance:

date 2002-03-27 time 13:55:10 3 smpl size 0.03 g titer 5.3686 mg/ml mean (2) 5.3477 mg/ml +/-s 0.02973 mg/ml s(rel) 0.56 %

============

787 KF Titrino

2.3 Tutorial

Viewing the statistics data

If you have not connected a printer, you can view the statistics data on the display with <SELECT>.

KFR volume 5.676 ml titer 5.3686 mg/ml

KFR volume 5.676 ml mean (2) 5.3477 mg/ml

KFR volume 5.676 ml +/-s 0.02973 mg/ml

KFR volume 5.676 ml s(rel) 0.56 %

• From the result display "titer", switch to the display of the mean value with <SELECT>.

Mean value of 2 determinations.

• Press <SELECT> again and the standard deviation is shown.

Absolute standard deviation.

• Pressing <SELECT> once more leads to the

relative standard deviation.

• <SELECT> returns you to the result display.

Repeat the titer determination once more.

With a connected printer you may want a printout of the single results that are used for the statistics calculation: press the key sequence <PRINT><1><ENTER>.

Let us assume that you have discovered that one of the values is an "outlier" and you would like to delete it.

Deleting a result in the mean value calculation

2 × <CALC DATA>

KFR volume 5.676 ml >statistics

2× <ENTER>

KFR volume 5.676 ml res.tab: original

KFR volume 5.676 ml res.tab: delete n

<ENTER>

787 KF Titrino

In our example, the deviation of the second result is excessive. We thus wish to delete it:

• Press <CALC DATA> twice. The display shows:

• Open with <ENTER> the inquiry of the result table

"res.tab:"

• Press <SELECT> to display "delete n". This means that you wish to delete a single result with the index n in the result table.

2.3. Tutorial

KFR volume 5.676 ml delete n= 1

<2>

<ENTER>

2 × <QUIT>

• Enter the index of the result you wish to delete, in our case the second:

• Exit the inquiry with <QUIT>.

Mean value and standard deviation are recalculated and can be viewed in the display.

If you have connected a printer, a new report is printed out.

Following this titer determination, you now decide to perform Karl Fischer determinations. The titer just determined will be automatically used here.

787 KF Titrino

2.3 Tutorial

2.3.3 Karl Fischer titration

<MODE>

KFR volume 5.676 ml KFT

<ENTER>

KFT conditioning

3 × <ENTER>

KFT conditioning titer 5.3326 mg/ml

2 × <QUIT>

Now prepare your sample and titrate it.

• Select the "KFT" mode: Press <MODE> repeatedly until the display shows

• Accept this mode with <ENTER>

The instrument is in the KFT mode and the titration cell is ready for operation.

• Check briefly that the titer just determined has also been adopted: Press <CALC DATA>, branch to the group "calculation" with <ENTER> and then press <ENTER> two times more to display the following inquiry.

• Exit the inquiry by pressing <QUIT> twice.

Result calculation and unit of the result

The result is calculated by the following formula:

)content(water

<UNIT>

KFT volume 3.459 ml result unit: %

2 × <SELECT>

<ENTER>

KFT volume 3.459 ml result unit: mg/ml;3

<1>

<ENTER>

• Change the unit of the result to mg/mL: Press <UNIT>. The display shows:

• You wish to have your result in mg/mL. Press <SELECT> repeatedly until "mg/ml" appears in the display.

• Press <ENTER>. The number of decimal places is shown after the separator ";". The "3" flashes to show you that you can now enter a number. Enter here, e.g. 1 decimal place and exit the inquiry by pressing <QUIT> twice.

<QUIT>

The result is outputted in the new unit.

××−

factortiter)blank)KFR(volume(

divisorsmplsize

787 KF Titrino

2.3. Tutorial

It is now necessary to match the factor to the new result unit. A table with a selection of matched quantities for factor, divisor and unit of the sample size can be found in the quick reference.

4 × <ENTER>

KFT volume 3.459 ml factor 0.1

<1>

<ENTER>

KFT volume 3.459 ml divisor 1

<ENTER>

2 × <QUIT>

• Enter a new factor: Press <CALC DATA> and enter the inquiries of the "calculation" group with <ENTER>. Proceed with 3 times <ENTER> to the display:

• Enter "1".

• As divisor enter the density of the sample.

• Exit the inquiry by pressing <QUIT> twice. The re-

sult is recalculated and outputted.

2.3.4 Drift

The drift is measured in µL/min. It specifies how much KF reagent is consumed per unit time to keep the titration cell dry. The reagent is needed,

• to titrate moisture in the titration cell.

• to compensate the iodine consumption of slow side reactions.

The drift value is generally of the order of a few µL/min for "dry conditioned" titration cells.

Checking the condition of the solvent

The drift can be displayed during the conditioning of the titration cell with the <DRIFT> key:

<DRIFT>

Drift 4.3 µl/min

<DRIFT>

• Press <DRIFT>. The first line of the display shows

You can follow the progress of the drift. In fresh solvent the drift value should drop to less than 10 µL/min after a few minutes.

• Pressing <DRIFT> once again switches the drift display off.

787 KF Titrino

2.3 Tutorial

Drift correction of the results

You can correct your results by the drift. This is primarily necessary if you wish to determine very small amounts of moisture or when you have very long titration times. For the correction "drift value ∗ titration time" is subtracted form the dispensed volume:

corrected volume = dispensed volume – (drift value ∗ titration time)

The drift value can be determined automatically or entered manually. In the automatic determination the current drift value at the start of the titration is stored and used for the correction. In the manual entry you yourself enter a fixed value, e.g. the stable drift value that you have read off from the display during conditioning.

7 × <ENTER>

KFT volume 3.459 ml drift corr.: OFF

2 × <SELECT>

<ENTER>

KFT volume 3.459 ml drift value 0.0 µl/min

2.2

<ENTER>

<QUIT>

KFT-Vol -d 2.365 ml

• Activate the drift correction: Press <CALC DATA> and enter the inquiries of the "calculation" group with <ENTER>. Proceed with <ENTER> until the display shows:

• Make your selection with <SELECT>, e.g. "man.".

• Enter a drift value, e.g. 2.2 µL/min and exit the in-

quiry.

The result is recalculated and the first line of the display shows

-d means that a drift correction has been performed.

If you have connected a printer, the full report provides you with all data for recalculation of the result:

date 2002-03-27 time 13:55:10 3 smpl size 0.03 g KFR volume 3.459 ml drift man. 2.2 µl/min (-d)time 1.03 water 922.2 mg/ml

============

787 KF Titrino

2.4. Selection of the mode, key <MODE>

2.4 Selection of the mode, key <MODE>

MODE

–

Press key <MODE> until the desired mode is displayed and confirm with <ENTER>.

The following modes can be selected:

• KFT: Karl Fischer titration

• TITER with H2O or std.: Titer determination with water or water-containing standard.

• TITER with Na2Tart*2H2O: titer determination with sodium tartrate.

• BLANK determination: determination of the blank value

The set values under the <CONFIG> and <PARAM> keys apply to all modes, whereas the calculations differ for each mode. Once values have been set they remain effective even if the instrument is switched off.

787 KF Titrino

2.5 Configuration, key <CONFIG>

CONFIG

KFT ******** >KF device settings

>KF device settings

limit KF reag. OFF ml

actual KF reag. 0 ml

polarizer: I(pol)

I(pol) 50 µA EP 250 mV cond.

U(pol) 400 mV EP 25 µA cond.

Key <CONFIG> serves to enter device specific data. The set values apply to all modes. The quantities marked with "cond." are also accessible during the conditioning

KF device settings:

Settings for the monitoring of the reagent supply, the measuring input, the endpoint and the filling rate.

peripheral units:

Selection of printer, balance and the curve at the analog output.

auxiliaries:

e.g. setting of dialog language, date, time, etc.

RS232 settings:

RS parameters for the COM interface.

The display texts of the Titrino are shown to the left. The values are the default values.

KF device settings for all modes

KF reagent volume counter (0...999 mL, OFF)

is used for monitoring of the

• reagent supply

• the buffer capacity of the solvent with 2-component

reagents <CLEAR> sets "OFF". If the KF reagent volume counter is activated, the inquiry of the current counter status follows.

Current counter status (0...999 mL)

Selection of the polarization mode (I(pol), U(pol))

Polarization current(-127...127 µA) Endpoint voltage(-1500 mV...1500 mV)

Polarization voltage(-1270...1270 mV, in steps of 10 mV) Endpoint current (-150...150 µA)

787 KF Titrino

2.5. Configuration, key <CONFIG>

filling rate max. ml/min

cond.

>RS232 settings

baud rate: 9600

data bit: 8

stop bit: 1

parity: none

handshake: HWs

RS control: ON

>peripheral units

send to: IBM

balance: Sartorius

record: V vs. t

Filling rate after the titration (0.01...150 mL/min, max.)

<CLEAR> sets "max.". The maximum rate depends on the Exchange unit: Exchange unit max. 5 mL 15 mL/min 10 mL 30 mL/min 20 mL 60 mL/min 50 mL 150 mL/min

Settings of RS232 interface

2.6 Parameters, key <PARAM>

The key <PARAM> is used for the entry of values that

PARAM

determine the titration sequence. Values marked with "cond." are accessible during the conditioning. "**titr." means that these values can be changed during the titration. They influence the ongoing determination. Other values can only be changed in the inactive state.

The display texts of the Titrino are shown to the left. The values are the default values.

2.6.1 Parameters

KFT ******** >titration parameters

>titration parameters

extr.time 0 s **titr.

stop crit: drift **titr. stop drift 20 µl/min **titr.

t(delay) 10 s **titr.

stop V 99.99 ml **titr.

start V: 0.00 ml cond.

titration parameters

are valid for the global titration sequence.

preselections:

ON/OFF of various auxiliary functions such as automatic requests after the start and report.

General titration parameters

Extraction time (-9999.. 9999 s)

for

- that evolve sample slowly

- work with KF oven

With positive extraction times, titration is performed continuously during this time; with negative values no titrant is added during the extraction time. The extraction time can be aborted with <QUIT>.

Type of stop criteria (drift, time)

Titration stops if EP is and stop drift is reached. (1...999 µL/min)

Titration stops if there is no dosing during t(delay). (0...99 s)

Switch off when the end point is reached and the set time after the last dispensing has elapsed.

Stop volume (0...99.99 mL, OFF)

Safety stop, e.g. if no endpoint is found. <CLEAR> sets "OFF".

Start volume (0.00…99.99 mL.)

Performed and inquired only in KFT mode. Start volume is dis

ensed before titration start. In the

787 KF Titrino

2.6 Parameters, key <PARAM>

dos.rate max. ml/min **titr.

max.rate 10.0 ml/min **titr.

min.volume incr. min. µl **titr.

case of a negative extraction time, it is dispensed after the extraction time has elapsed.

If a start volume has been entered, an inquiry appears regarding the dosing rate:

Dosing rate for start volume (0.01...150 mL/min, max.)

<CLEAR> sets "max.". The maximum rate depends on the Exchange Unit: Exchange Unit max. 5 mL 15 mL/min 10 mL 30 mL/min 20 mL 60 mL/min 50 mL 150 mL/min

Maximum titration rate (0.01...150 mL/min, max.)

<CLEAR> sets "max.". This parameter determines primarily the addition rate outside the control range, see also page 26. The maximum rate depends on the Exchange Unit: Exchange Unit max. 5 mL 15 mL/min 10 mL 30 mL/min 20 mL 60 mL/min 50 mL 150 mL/min

Minimum volume increment in the titration (0.01...999.9 µL/min, min.)

<CLEAR> sets "min.". This parameter determines the addition rate right at the start and the end of the titration, see also page 26. This parameter influences the titration speed and therefore its accuracy very strongly: A smaller min.rate results in a slower titration. The minimum increment depends on the Exchange Unit: Exchange Unit min. 5 mL 0.5 µL 10 mL 1.0 µL 20 mL 2.0 µL 50 mL 5.0 µL

787 KF Titrino

2.6. Parameters, key <PARAM>

>preselections

conditioning: OFF

req.ident: OFF

req.smpl size: OFF

report: OFF cond.

Preselections for the sequence

Automatic conditioning of titration vessel. (ON, OFF)

If conditioning is "on", between the titrations the titration solution is constantly maintained at the end point. When conditioning is performed, the volume drift can be displayed during the conditioning with <DRIFT>, see page 36.

Request of the sample identification after start of titration (ON, OFF)

After start, the sample identification can be requested automatically. Not performed or inquired in the "BLANK" mode.

Request of sample size after start of titration (ON, OFF)

Not performed or inquired in the "BLANK" mode.

Selection of the result report on titration completion (short, full, OFF)

2.9 Drift display, key <DRIFT>

DRIFT

During the conditioning, the <DRIFT> key can be used to switch the display of the current drift on and off.

The value provides an idea for

• the condition of the titration cell.

• whether a drift correction should occur and the

magnitude of the drift value.

• the sample matrix. Do side reactions take place?

Does the sample contain ketones or aldehydes? etc.

• the magnitude of the stop drift as a stop criterion

(value above basic drift).

787 KF Titrino

2.10 Data output

Reports for the output at the end of a determination

PARAM

× <PARAM>

× <ENTER>

>preselections

report: OFF

Meaning of the report blocks:

full Full result report with raw results, calculations and statistics. short Short result report with calculations and statistics.

Original reports which are put out automatically at the end of the titration and after every recalculation of the result.

Original reports have double dashes ==== at the end, whereas recalculations are marked by single dashes

----.

Report outputs can be stopped with <QUIT>.

With <PARAM>, the report sequence at the end of the determination is defined. See also page 24.

report:

Definition of report blocks to be printed automatically at the end of the determination.

The display texts of the Titrino are shown to the left. The values are the default values.

Preselections

Report sequence: full, short, OFF

Select a block with <SELECT>.

787 KF Titrino

2.10. Data output

Example of reports:

Full result report

date 2002-03-27 time 08:33:42 4 smpl size 1.0 g ident. 08-4 KFR volume 2.278 ml blank 0.0315 ml titer 5.0 mg/ml drift auto 1.9 µl/min (-d)time 0:43 water 1.14 % mean(4) 1.13 % +/-s 0.005 % s(rel) 0.44 % ============

- date, time, current run number.

- sample size, identification.

- The blank is printed out only if the value is ≠ 0 mL.

- The drift and the (-d)time are printed out only it the drift correction has been set to "OFF".

- result

- statistics

Short result report

date 2002-03-27 time 08:35:42 5 smpl size 1.0 g ident. 08-5 (-d)time 0:45 water 1.14 % mean(5) 1.13 % +/-s 0.005 % s(rel) 0.44 % ============

- date, time, current run number.

- result

- mean value with 5 single results

- standard deviation

- relative standard deviation

Additional possibilities for report outputs

In addition to the reports which are printed at the end of the titration, various other reports can be put out. There are 2 possibilities to select the reports:

<PRINT><keyX><ENTER> key X is the key under which the appropriate data

are entered.

List of reports:

Report <Key X>

Configuration report CONFIG

Parameter report PARAM

Calculation data CALC DATA

Table of the individual results for statistics

calculation

Result display without a printer

Results can also be viewed in the display. After a determination the calculated result and the single results of the statistics calculations can be displayed with <SELECT>. <SELECT> switches to the next result, view also page 13.

787 KF Titrino

3.1 Error and special messages

3 Error messages, Troubleshooting

Data transfer inoperative See measures on page 41.

3.1 Error and special messages

change solvent The limit volume of the reagent volume counter "limit KF reag."

has been reached.. Exit: Change solvent and press <CLEAR>.

check electrode

There is a break or short circuit. Possible causes and rectification of the fault:

- the electrode is not plugged in ⇒ plug it in

- the electrode is not immersed in the solution ⇒ immerse it

- the electrode is defective ⇒ use new electrode.

- the electrode cable is defective ⇒ use new cable. The electrode test can be switched off under the <PARAM> key. Exit: Rectify fault or <STOP>.

check exchange unit The Exchange Unit is not mounted (properly).

Exit: Mount Exchange Unit (properly) so that the coupling engages or <STOP>.

cylinder empty! During dispensing with <DOS> an entire cylinder ahs been

dispensed. Exit: Press <STOP/FILL>.

division by zero The result could not be calculated as a divisor in the formula

was equal to zero. Exit: Enter appropriate value.

stop V reached The determination has been stopped as the stop volume has

been reached.

system error 3 The instrument adjustment data have been overwritten.

Exit: <CLEAR>. Default adjustment data are set. The error message appears each time the instrument is switched on until it has been readjusted (Metrohm service).

???? The result exceeds the valid data range or too many decimal

places are needed to display.

787 KF Titrino

3.1. Error and special messages

Error messages in connection with the data transfer

If neither a computer nor a printer is attached, the report output at the end of the titration must be switched off:

Receive errors:

E36 Parity

Exit: <QUIT> and set corresponding quantity the same on both instruments

E37 Stop bit

Exit: <QUIT> and set corresponding quantity the same on both instruments

E38 Overrun error. At least 1 character could not be read.

Exit: <QUIT>

E39 Overflow of the receive buffer of the Titrino (> 82

characters). Exit: <QUIT>

Send errors:

E40 DSR=OFF E41 DCD=OFF E42 CTS=OFF

Handshake unsatisfactory for more than 1 s. Exit: <QUIT> Is the receiver switched on and ready to receive?

E43 The transmission of the Titrino has been interrupted

with XOFF for at least 3 s. Exit: <QUIT>.

E44 The RS interface parameters are no longer the same

for both instruments.

787 KF Titrino

3.2 What can you do if the data transfer does not work?

Problem Questions for remedial action

No characters can be received on a connected printer.

No data transmission and the display of the Titrino shows an error message.

The received characters are garbled.

Wrong line spacing.

- Are the instruments switched on and cables plugged in correctly?

- Is the printer set to ”on-line”?

- Are baud rate, data bit and parity the same on both instruments?

- Is the handshake set properly?

If everything seems to be ok, try to print a report with the key sequence <PRINT><CALC DATA><ENTER>. If this report is printed out correctly, check if reports are defined in key <PARAM>.

- error 42: Transmission error. Is the printer set to "online"? Is the connection cable properly wired?

- error 43: Data output of the Titrino disabled for longer than 6 s by XOFF.

- error 36-39: Receive error. Are the RS settings the same on both devices?

- Are the RS settings the same on both devices?

- Has the correct printer been selected?

The printer does not emulate completely the preset

mode. Usually these problems arise with the IBM mode. Set the printer to a different mode (e.g. Epson).

787 KF Titrino

3.3. Diagnosis

3.3 Diagnosis

3.3.1 General

The 787 KF Titrino is a very precise and reliable instrument. Thanks to its rugged construction it is virtually impossible for external mechanical or electrical influences to have an adverse effect on its functions.

Although the occasional fault in the instrument can not be excluded completely, it is certainly much more likely that malfunctions are caused by wrong operation or handling or through improper connections and operation with non-Metrohm instruments.

It is advisable in each case to isolate the fault with the rapid and easy to perform diagnostic tests. The customer thus need not call METROHM service until there is a true fault in the instrument. In addition, with the aid of the numbering in the diagnostic program he can provide the service engineer with much more accurate information.

In inquiries always quote the manufacturing (page 4) and program number (see configuration, page 21) and specify possible error displays..

3.3.2 Procedure

• The diagnostic steps must be performed in sequence and compared with the reactions of the 787 KF Titrino (indented). In the "yes" case, continue with the next instruction.

• If the instrument does not show the expected reaction ("no" case), the appropriate diagnostic step must be repeated to exclude an operating error. With repeated wrong reactions, however, there is a strong possibility that a malfunction exists.

• The diagnostic steps allow re-entry into the test routine for repetition if the following display appears:

diagnose press key 0...9

If the instrument is in a subprogram of the diagnostic routine: Press <Clear>. If need be, switch the power off then on again after a few seconds. At the same time press key <9> until the above display appears.

• If <Clear> has been pressed during the display of 'diagnose press key 0...9', the in-

strument returns to the user program.

• Error display: An error is shown in the display as follows:

error XX

error numbe

• If a fault causes the burette drive to stick at the top or bottom end of the cylinder, see page 52, point 3.5.

787 KF Titrino

3.3. Diagnosis

3.3.3 Equipment required:

− voltage calibrator, e.g. 1.773.0010 Metrohm pH Simulator

or 1.767.0010 Calibrated Reference for mV, pH, Ω µS, °C

− highly insulated interconnection cable

− cable 3.496.5070

− exchange units, if possible with different cylinder volumes (or 3.496.0070 dummy exchange unit)

− stop watch or watch with second hand

− digital or analogue voltmeter (if need be, connect a calibrated recorder)

− 2 connecting cables with 4 mm banana plugs

− test plug 3.496.8510 (necessary only if plug ‘Remote’ should be checked)

− test plug 3.496.8480 (necessary only if plug ‘RS 232’ should be checked)

6.2108.060

3.3.4 Diagnosis steps

1 Prepare instruments for diagnostic test

• Power off.

• Disconnect all external connections (cables at rear, except mains cable and key-

board).

• Remove exchange unit.

• Power on and immediately press and hold the <9> key until the power up test pat-

tern disappears.

diagnose press key 0...9

2 Perform display test

• Press <2>.

display test

• Press <Enter>.

Characters for a visual check of the display are generated on the eight lines.

Test sequence: a) The display is cleared and overwritten from the left to the right with a dot pattern

( ▓ ▓ ▓ ▓ ▓ ▓ ▓ ▓ ).

b) The display is cleared and both lines are written into with the letters A, B, C,…Z.

c) The complete character set is shown as a moving display. At the same time with mov-

ing display the LED „Cond.“ are switches on and off.

• The test sequence can be held and then continued at any time by pressing <5>.

• Block 2 is quit by pressing <Clear>.

diagnose press key 0...9

787 KF Titrino

3.3. Diagnosis

3 Keypad test

• Press <1>.

keys test

• Press <Enter>.

keys test matrix code

• If any key is now pressed (on the 6.2130.060 keypad or on the front panel of the

787), the appropriate matrix code appears in the display.

Fig. 2 Front panel 787

Fig. 1 Keypad 787

• Block 1 is quit by pressing the <Clear> key twice.

diagnose press key 0...9

4 Cylinder code, date, time

• Put exchange unit or dummy on the Titrino and put the burette tip into a collecting receptacle.

787 KF Titrino

3.3. Diagnosis

• Press <0>.

date/time cylinder code

• Press <Enter>.

activat ed dosing uni t

date XX-XX-XX code:D0 XX ml

XX:XX:XX

mL-code

• Check date and time.

• Check whether the ml-code does correspond with the exchange unit placed or not.

For the sake of completeness, different exchange units can be inserted to check their ml code. If desired, the exchange unit can be removed again. If no exchange unit is inserted display does not show the ml-code but „check exchange unit !“.

• Press <Clear>.

diagnose press key 0...9

5 Analogue output test

A voltage can be set at the analog output (sockets at D) using the keypad. But this should not exceed ± 2000 mV. This voltage can also be used for the calibration of a connected recorder.

• Connect a voltage measuring instrument (voltmeter, DVM, recorder) to the analogue output (10).

• Press <3>.

analog output-1 test

• Press <Enter>.

analog output-1 test V-out = XXmV

Enter a voltage value in the range been pressed, this value appears as a voltage at the analog output..

Read off value an the connected voltmeter and compare with the mV value on the display. (Tolerance

2 mV)

2000 mV using the keypad. After the <ENTER> key has

• Press <Quit>.

• Disconnect voltmeter.

6 Motor timer test

• Press <6>.

motor-timer test

• Press <Enter>.

787 KF Titrino

3.3. Diagnosis

pot.meter dV/dt  10?

• Turn knob ‘dV/dt’ to the right stop and press <Enter>.

Test sequence:

a) In a first step, the frequency of the RC oscillator (analogue rate) is tested over a period

of 1 second.

b) In a second step, the frequency of the quartz oscillator (digital rate) is tested over a

period of 1 second.

c) If no error is found, after about 3 s it appears

motor-timer test o.k.

• Press <Clear>.

diagnose press key 0...9

7 Polarizer test

• Press <7>.

polarizer test

• Press <Enter>.

dummy resistor 14.3kΩ ?

• Connect resistor switch-box (or suitable resistor 14.3 kΩ 0.1%) using 3.496.5070 cable to ‘Pol’ socket. Switch-box to 14.3 kΩ.

• Press <Enter>.

Test sequence:

1. An asterisk flashes during the test.

2. In case of an error an error message appears. (If for example the switch-box is not connected,

3. If no error is found, after about 15 s display shows

polarizer test o.k.

error 100

appears).

• Press <Clear>.

diagnose press key 0...9

• Remove cable and resistor switch-box.

787 KF Titrino

3.3. Diagnosis

8 External inputs and outputs

This test is meaningful only if the 787 KF Titrino is used interconnected with other instruments via the 'Remote' connection. In addition, a 3.496.8510 test plug normally used in the repair service is required for this test. However, this plug can also be purchased by customers under the above number.

For the sake of completeness, the procedure is described here. If a diagnostic test of the external inputs and outputs is not required, continue with point 9.

PIN PIN PIN PIN



24 5

12 9

23 10

22 11



Fig. 3 Connections in the 3.496.8510 test plug

• Press <4>

extern input/output test

• Press <ENTER>.

I/O-test-connector?

• Insert the 3.496.8510 test plug in port B 'Remote'. (Do not switch off instrument!)

• Press <ENTER>.

Test sequence:

1. In case of an error an error message is displayed. If for example no test plug is con-

nected, error message error 50 01HEX

2. If no error is found, after about 1 s display shows

appears).

• Remove test plug.

• Press <CLEAR>.

787 KF Titrino

extern input/output o.k.

diagnose press key 0...9

3.3. Diagnosis

9 RS 232 test

A 3.496.8480 test plug normally used in the repair service is required for this test. However, this plug can also be purchased by customers under the above number.

For the sake of completeness, the procedure is described here. If a diagnostic test of the RS 232 interface is not required, continue with point 10.

TxD

RxD

DCD

DTR

DSR

RTS

CTS

Fig. 4 Connections in the 3.496.8480 plug

• Press <5>.

RS232 test

• Press <ENTER>.

RS232 test-connector?

• Insert the 3.496.8480 test plug in 'RS 232' port.

• Press <Enter>.

Test sequence:

1. In case of an error an error message is displayed. If for example no test plug is connected, error message

2. If no error is found, after about 5 s display shows

RS232 test o.k.

error 68

appears).

• Remove test plug.

• Press <Clear>.

diagnose press key 0...9

787 KF Titrino

3.3. Diagnosis

10 Spindle drive and stopcock changeover

• Press <Clear>.

The Titrino fills (only if an exchange unit is inserted)

The Titrino gets out of the diagnosis menu and returns to the user program.

• Remove exchange unit.

• Check spindle zero position, see Fig. 5.

0.2 - 0.6 mm

Fig. 5 Fig. 6

The spindle must be 0.2 - 0.6 mm below the edge of the sliding plate.

The bar of the stopcock coupling must be exactly parallel to the lateral edges of the MPT Titrino, see Fig.6.

• Reinsert Exchange Unit.

Titrino fills.

The display of before reappears.

• Knob 'dV/dt' to right stop.

• Press the <DOS> key (on instrument) until the piston rod reaches the top and at the

same time measure the time from start to end.

XXX X ********

Spindle remains at maximum position. The transit time of the spindle is 20 s.

cylinder em

ty !

mind selected language!

• Measure spindle lifting (can be performed only if the 3.496.0070 Dummy Exchange Unit is inserted or the locking switch (in right hole) is carefully operated with a screwdriver after removal of the Exchange Unit).

From the start point, the spindle travels 80 mm. Instead of the spindle height, the expelled

volume can be measured (corresponds to max. vol. of Exchange Unit used).

• Press <FILL> (on instrument) and simultaneously measure the time until the Titrino is

again in the 'ready' position.

Times for filling: per stop cock cycle 1 s

for filling 20 s (Tolerance: 10 %)

The following generally holds: Spindle and stopcock must move at a constant speed (noise!). In the filling setting, the stopcock coupling must position the lever of the Exchange Unit correctly at the left stop (with virtually no play and without sticking).

• Set potentiometer 'dV/dt' to left stop.

• Press <DOS> (on instrument) at same time and use a stopwatch to measure the

time for 1/10 of the cylinder volume to be expelled. The time should be ca. 90 ... 110 s.

787 KF Titrino

3.3. Diagnosis

• Set potentiometer 'dV/dt' to right stop.

• Press <FILL>.

11 Setting up original arrangement

Reconnect all peripherals disconnected at the start of the diagnostic routine and perform a short function test with these.

787 KF Titrino

3.4. Initialise and test RAM

3.4 Initialise and test RAM

On the odd occasion large disturbing signals (e.g. mains spikes, lightning, etc.) can have an adverse effect on the processor functions and hence lead to a system crash. After such a crash the RAM area must be initialised. Although the basic instrument data remain stored, the RAM initialisation should be performed only when necessary since the stored user data (configuration, parameters, calculation variables, etc.) are cleared as a result.

• Power OFF

• Power ON and simultaneously press keys <DOS> and <STOP/FILL>.

RAM Init.

• Press <START>.

confirm RAM Init.

• Press <START>.

RAM Init. activ

RAM is tested and initialised. Subsequently a warm start is executed.

The lost data of the user memory must now be reentered.

If 'system error 3' appears in the display, <Clear>can be used to return to the instrument

program. The initialisation values are loaded automatically. The instrument thus remains capable of measurement. However, possibly a small loss in accuracy must be anticipated. A new optimum adjustment can be performed by Metrohm service. The error message 'system error 3' always appears after the instrument is switched on until this adjustment has been performed.

787 KF Titrino

3.5. Releasing a locked spindle with inserted Exchange Unit

3.5 Releasing a locked spindle with inserted Exchange Unit

• The burette drive may very occasionally jam at the top or bottom end of the cylinder. If jamming occurs at the top or when the drive is out of function, the Exchange Unit can no longer removed. In this case, it is necessary to proceed as follows:

2 screws (M4 countersunk)

2 screws (M3 fillister head) knob

edge of bench

Fig. 7

• Disconnect instrument from power supply!

• Remove control knob

• Place instrument over edge of bench to allow the M3 screws to be removed (Fig. 7)

• Remove M4 screws

• Lift off top part of instrument together with Exchange Unit in the manner shown by

the arrow

The electronic circuits are now accessible!

On no account touch these!

• Remove spindle from mechanical stop by turning the large gear wheel. (In case that the motor is inoperative, position spindle by hand to zero position.)

787 KF Titrino

4.1 Setting up and connecting the instruments

4 Preparations

The mains cables supplied with the instrument are three-core and equipped with a plug with an earthing pin. If a different plug has to be fitted, the yellow/green lead must be connected to the protective earth. Each break in the earthing inside or outside the instrument can make it a hazard. When the instrument is opened or if parts of it are removed, certain components may be live if the instrument is connected to the mains. The mains cable must therefore always be unplugged when certain adjustments are made or parts replaced.

4.1 Setting up and connecting the instruments

4.1.1 Titrino with Titration Stand or Stirrer

B A

787

Cable

Ti Stand or Stirrer

6.2130.060 Keypad

The 728 Magnetic Stirrer can also be connected instead of the 703 Ti Stand.

787 KF Titrino

4.1. Setting up and connecting the instruments

4.1.2 Connection of a printer

A variety of printers can be connected to the RS232 interface of the Titrino. If you connect a printer other than one of those mentioned below, ensure that the Epson mode is emulated or that it uses the international character set following the IBM Standard Table 437 and IBM-compatible graphics control characters. If a balance is connected at the same COM of the Titrino as a printer, you need the 6.2125.030 Adapter. The printer must be plugged into the "data out" receptable of the adapter. It can be operated only with the simple hardware handshake (HWs) or without handshake.

Printer Cable Settings on Titrino Settings on Printer

Seiko DPU-414

Custom DP40-S4N

Citizen iDP562 RS

Epson LX300 HP Desk Jet with serial interface

HP Desk Jet with parallel interface

6.2125.130 baud rate: 9600 data bit: 8 stop bit: 1 parity: none handshake: HWs send to: Seiko

6.2125.130 baud rate: 9600 data bit: 8 stop bit: 1 parity: none handshake: HWs send to: Epson

6.2125.050 baud rate: 9600 data bit: 8 stop bit: 1 parity none handshake: HWs send to: Epson

6.2125.050 as above see printer manual

6.2125.050 baud rate: 9600 data bit: 8 stop bit: 1 parity none handshake: HWs send to: IBM

2.145.0330

RS232/ Parallel Converter

baud rate: 9600 data bit: 8 stop bit: 1 parity none handshake: HWs send to: IBM

none

none, pre-set on Metrohm version

IDP-560 EMULATION FONT MAP =GERMANY PRINT=REVERSE LITTLE CR CODE=VOID CR AFTER B :FULL=VOID CR ON b. EMPTY=VALID BUFFER 1K BYTE BAUD RATE=9600 PROTOCOL=8,N,1 FLOW CONTROL CTS-RTS

1 2 3 4 5 6 7 8 9 10

SSW1

A4 paper

1 2 3 4 5 6 7 8

see printer manual

787 KF Titrino

4.1 Setting up and connecting the instruments

4.1.3 Connection of a balance

The following balances can be connected to the RS232 output of the Titrino:

Balance Cable

Sartorius MP8, MC1 6.2125.070

Shimadzu BX, BW 6.2125.080

Settings on Titrino: balance SARTORIUS Balance: delimiter CR+LF

Ohaus Voyager, Explorer, Analytical Plus

from Ohaus: AS017-09 (Ohaus parts number)+

6.2125.170

Settings on Titrino: balance SARTORIUS Balance: SET BALANCE INTERFACE BAUD RATE 9600 DATA BITS 8 PARITY none STOP BITS 1

Mettler AB, AG (LC-RS25) in the scope of delivery of the balance

Mettler AM, PM 6.2146.020

additionally from Mettler: ME 47473 Adapter and ME 42500 hand switch or ME 46278 foot switch

Mettler interface 016 Cable in scope of delivery of interface 016: red lead

to pin 3, white lead to pin 7 of the 25-pin connector 25-pole/9-pole adapter

Mettler interface 011 or 012 6.2125.020

Mettler AT 6.2146.020

Mettler PG, AB-S 6.2134.120 + 6.2125.170

Mettler AX, MX ,UMX 6.2134.120 + 6.2125.170

AND Models ER-60, 120, 180, 182

6.2125.020 Models FR-200, 300 Models FX-200, 300, 320 with RS232 interface (OP-03)

Precisa, balances with RS232C-

6.2125.080 interface

The balance type must be preselected at the Titrino with the <CONFIG> key. Balance and printer can be connected at the same time with the aid of the 6.2125.030 adapter. The balance must then be plugged into the "data in" receptable of the adapter.

787 KF Titrino

4.1. Setting up and connecting the instruments

The weight is transferred as a number with up to 6 digits, sign and decimal point. Units and control characters sent by the balance are not transmitted. With the aid of a special input unit supplied by the balance manufacturer, in addition to the weight an identification can be inputted from the balance. For this, the address of the identification must be preselected on the input unit.

Balance Id

Sartorius ID.1 or 26

Mettler (AT)

If the balance works only with 7 bit and the printer with 8 bit and if they are at the same Titrino, the balance has to bet to "space parity" and Titrino/printer to 8 bit, "no parity".

C (ID#1)

787 KF Titrino

4.1 Setting up and connecting the instruments

4.1.4 Connection of a KF Oven

It is expedient to place the oven on 6.2041.180 instrument bridge. Take care that the gas outlet of the oven enters the titration vessel as directly as is possible to prevent the formation of condensed water in the outlet tubing.

B A

787

768

The 707 KF Oven can also be connected instead of the 768 KF Oven.

4.1.5 Connection of the 774 Oven Sample Processor

The Oven Sample Processor heats the sample and transfers the moisture from the sample to the titration vessel of the Titino. Titrino and Oven Sample Processor are connected via the remote sockets (cable 6.2141.020).

787

B A

Cable (Remote) 6.2141.020

• The "Remote" socket allows not only connection of a sample changer but also additional control functions. Pin assignment of the "Remote" socket and control possibilities, see page 65f.

774

787 KF Titrino

4.1. Setting up and connecting the instruments

4.1.6 Connection of a Sample Changer

B A

With 6.2141.030 cable (instead of 6.2141.020), two Titrinos can be connected to the 730 or 760 Sample Changer at the same time.

• The "Remote" socket allows not only connection of a sample

787

730/760

Cable (Remote)6.2141.020

changer but also additional control functions. Pin assignment of the "Remote" socket and control possibilities, see page 65f.

787 KF Titrino

4.1 Setting up and connecting the instruments

4.1.7 Connection of a recorder

The recorder is connected to the analog output of the Titrino.

B A

The signal at the analogue output can be preselected on the Titrino (key <CONFIG>, ">peripheral units", "curve:"):

Preselection at

Titrino

V vs. t Volume vs. time

dV/dt vs. t Drift vs. time

U vs. t Control deviation vs.

-U vs. t Control deviation vs.

787

Recorder

Meaning Resolution,

Signal at analogue output

1 cylinder volume: 2000 mV

Dispensing curve, e.g. in work with the KF oven

100 µL/min:

Drift curve, e.g. to observe the basic drift

1 mV +1 mV

timet

1 mV -1 mV

time

1000 mV

787 KF Titrino

4.1. Setting up and connecting the instruments

4.1.8 Connection of a computer

B A

Cable 6.2125.060 (+6.2125.010)

Preselections on the Titrino:

RS232 settings: ......................................... depend on the control program of the computer

Send to:............................................................................................................................ IBM

Vesuv 3.0, PC program for data acquisition and method backup

for up to 64 devices ...................................................................................... 6.6008.200

787

787 KF Titrino

4.2 Connection of electrodes, preparing titration vessel

The 787 KF Titrino has one measuring input.

Rear panel:

Pol

Setting up the KF titration vessel

Pol Connection of polarized electrodes.

If measured quantities Ipol or Upol are selected, this measuring input is automatically active.

For volumetric KF titrations install the titration vessel according to the following figure:

Electrode cable

6.2104.020

Double Pt-electrode

6.0338.100

Screw nipple

6.2730.010

Stopper with septum 18 mm

6.2730.020

Septum

6.1448.010

Set of O-rings

6.1244.040

Magnetic stirring bar

6.1903.020

Drying tube

6.1403.040

Stopper

6.2730.030

Titration vessel lid

6.1414.030

Titration vessel

20...90 mL

6.1415.220

787 KF Titrino

4.2. Connection of electrodes, preparing titration vessel

Arrangement of the parts on the titration vessel lid

View from above:

1 Electrode

2 Sample addition

3 Drying tube

Stirrer

4 Stopper or aspirating tube

5 Buret tip with titrant

6 Stopper or dispensing tip

This arrangement applies to the shown stirring direction.

787 KF Titrino

5.1 Technical specifications

5 Appendix

5.1 Technical specifications

Modes KFT: Karl Fischer titration

TITER: Titer determination with water or water-

containing standard, resp. with sodium tartrate

BLANK: Blank determination

Measuring input 1 measuring input for polarized electrodes.

Measuring range

Voltage 0...±1500 mV, resolution 1 mV, error limit 0.1 % fullscale Current 0...±150 µA, resolution 1 µA

Polarizer

Ipol 0...±127 µA, resolution 1 µA Upol 0...±1270 mV, in steps of 10 mV

Measuring amplifier (at 25 °C and Titrino warmed-up) Input resistance >10 Offset current <3 Deviation of offset voltage 15

Dosification

Volume of buret cylinder 1, 5, 10, 20 or 50 mL Resolution 10 000 steps per buret cylinder Titrating buret 1 internal buret Auxiliary buret additional: 776 or 765 Dosimat

Materials Housing Polybutyleneterephthalate (PBTP) Keypad cover Polycarbonate (PC)

Display LCD, 2 lines of 24 characters each Height of characters 5 mm LED back-lit

∗10

Ω

–13

µV/K

787 KF Titrino

5.1. Technical specifications

RS232 interface for printer, balance or computer connection: completely

controllable from external control unit

Remote input/output lines for Sample Changer, robot connection, etc.

Analog output

Output signal -2000 ... 2000 mV Signal at analog- depending on preselection: output V vs. t

dV/dt vs. t U vs. t

-U vs. t

Ambient temperature Nom. operation range 5 ... 40 °C Storage – 20 ... 60 °C Transport – 40 ... 60 °C

Safety specifications Designed and tested in accordance to IEC publication

61010-1, safety class I. This manual contains information and warnings which have to be followed by the user to ensure safe operation and to retain the apparatus in safe condition.

Mains connection Voltage 100, 117, 220/230, 240 V (switchable) Frequency 50 ... 60 Hz Power consumption 15 W Fuse Thermal fuse

Dimensions with Exchange Unit Width 150 mm Height 450 mm Depth 275 mm

Weight, incl. keypad app. 3.6 kg

787 KF Titrino

5.2 Pin assignment of the "Remote" socket

external Function

Inputs

Outputs

+5 V

pin 21 (Input 0)

pin 9 (Input 1)

pin 22 (Input 2)

pin 10 (Input 3)

pin 23 (Input 4)

pin 11 (Input 5)

pin 24 (Input 6)

pin 12 (Input 7)

pin 5 (Output 0)

pin 18 (Output 1)

pin 4 (Output 2)

Start

Stop

Enter

Functions see page 67

Clear

not used

Ready inactive

Conditioning ok, active if Cond.ok

Titration, active during titration

tp > 100 ms

787 KF Titrino

5.2. Pin assignment of the "Remote" socket

Outputs

Voltage

+5 V

0 V

pin 17 (Output 3)

pin 3 (Output 4)

pin 16 (Output 5)

pin 1 (Output 6)

pin 2 (Output 7)

End of determination EOD

Change solvent

Error, active with errors

Activate pulse, see page 67.

Pulses for recorder (tp=150 µs) 10 000 per buret cylinder

For all outputs:

= 40 V

CE0

= 20 mA

> 100 ms

Pulse

Functions see page 67.

pin 15

pin 14

≤ 75 mA

0 V: active 5 V: inactive

pin 25

Ordering numbers for plug: K.210.9004 (shell) and K.210.002

No liability whatsoever will be accepted for damage caused by improper interconnection of instruments.

787 KF Titrino

5.2 Pin assignment of the "Remote" socket

5.2.1 Lines of the "Remote" socket during the titration

787 KF Titrino

5.3. RS232 interface

5.3 RS232 interface

The 787 KF Titrino is configured as DTE ( Data Terminal Equipment).

The interface complies to the standard RS 232C.

The RS232 interface allows full remote control of the Titrino with an external controller.

Refer to your Metrohm agency if you need a detailed description of the RS232 interface and the remote control commands.

787 KF Titrino

5.4 Validation / GLP

GLP (Good Laboratory Practice) requires the periodic validation of the analytical instruments. The reproducibility and accuracy of the instruments are checked according to standard operating procedures.

Guidelines for the testing regulations (SOP, Standard Operating Procedure) are given in the following Metrohm Application Bulletin: No. 255: Validation of Metrohm KF titrators and KF ovens according to GLP/ISO 9001.

Contact your Metrohm agency for support with the validation of your Titrino. There you get a validation documentation, which helps you to perform the installation qualification (IQ) and the operational qualification (OQ).

787 KF Titrino

5.5. Warranty and conformity

5.5 Warranty and conformity

5.5.1 Warranty

The warranty regarding our products is limited to rectification free of charge in our workshops of defects that can be proved to be due to material, design or manufacturing faults which appear within 12 months from the day of delivery. Transport costs are chargeable to the purchaser. For day and night operation, the warranty is valid for 6 months. Glass breakage in the case of electrodes or other glass parts is not covered by the warranty. Checks which are not a result of material or manufacturing faults are also charged during the warranty period. For parts of outside manufacture insofar as these constitute an appreciable part of our instrument, the warranty stipulations of the manufacturer in question apply. With regard to the guarantee of accuracy, the technical specifications in the Instructions for Use are authoritative. Concerning defects in material, construction or design as well as the absence of guaranteed features, the purchaser has no rights or claims except those mentioned above. If damage of the packaging is evident on receipt of a consignment or if the goods show signs of transport damage after unpacking, the carrier must be informed immediately and a written damage report demanded. Lack of an official damage report releases METROHM from any liability to pay compensation. If any instruments and parts have to be returned, the original packaging should be used if at all possible. This applies above all to instruments, electrodes, buret cylinders and PTFE pistons. Before embedment in wood shavings or similar material, the parts must be packed in a dustproof package (for instruments, use of a plastic bag is imperative). If open assemblies are enclosed in the scope of delivery that are sensitive to electromagnetic voltages (e.g. data interfaces etc.) these must be returned in the associated original protective packaging (e.g. conductive protective bag). (Exception: assemblies with built-in voltage source belong in a non-conductive protective packaging). For damage which arises as a result of noncompliance with these instructions, no warranty responsibility whatsoever will be accepted by METROHM.

787 KF Titrino

5.5 Warranty and conformity

5.5.2 EU Declaration of conformity

EU Declaration of Conformity

The METROHM AG company, Herisau, Switzerland hereby certifies, that the instrument:

787 KF Titrino

meets the requirements of EC Directives 89/336/EEC and 73/23/EEC.

Source of the specifications:

EN 50081 Electromagnetic compatibility, basic specification;

Emitted Interference

EN 50082 Electromagnetic compatibility, basic specification;

Interference Immunity

EN 61010 Safety requirements for electrical laboratory measurement

and control equipment

Description of apparatus:

Titrator for fast and precise water determination.

Herisau, October 30, 2001

Dr. J. Frank Ch. Buchmann

Leiter Entwicklung Leiter Produktion und Beauftragter Qualitätssicherung

787 KF Titrino

5.5. Warranty and conformity

5.5.3 Certificate of Conformity and System Validation

Certificate of Conformity and System Validation

This is to certify the conformity to the standard specifications for electrical appliances and accessories, as well as to the standard specifications for security and to system validation issued by the manufacturing company.

Name of commodity: 787 KF Titrino

System software: Stored in ROMs

Name of manufacturer: Metrohm Ltd., Herisau, Switzerland

This Metrohm instrument has been built and has undergone final type testing according to the standards:

Electromagnetic compatibility: Emission EN50081-1, EN50081-2, EN55022 (class B)

Electromagnetic compatibility: Immunity

EN50082-1, IEC61000-6-2, Namur, IEC61000-4-2, IEC61000-4-3, IEC61000-4-5, IEC61000-4-6, IEC61000-4-11

Safety specifications IEC61010-1, EN61010-1

It has also been certified by the Swiss Electrotechnical Association (SEV), which is member of the International Certification Body (CB/IEC).

The technical specifications are documented in the instruction manual.

The system software, stored in Read Only Memories (ROMs) has been validated in connection with standard operating procedures in respect to functionality and performance. The features of the system software are documented in the instruction manual.

Metrohm Ltd. is holder of the SQS-certificate of the quality system ISO 9001 for quality assurance in design/development, production, installation and servicing.

Herisau, October 30, 2001

Dr. J. Frank Ch. Buchmann

Development Manager Production and Quality Assurance Manager

787 KF Titrino

5.6 Scope of delivery and ordering designations

787 KF Titrino ......................................................................................2.787.0010

inclusive the following accessories:

1 Titrino ................................................................................................................. 1.787.0010

1 Keypad for 787 KF Titrino.................................................................................. 6.2130.060

1 Key for Exchange Units ..................................................................................... 6.2739.010

1 Double Pt-electrode with plug-in head, without cable....................................... 6.0338.100

1 Electrode cable with plug F 1M......................................................................... 6.2104.020

1 Titration vessel lid .............................................................................................. 6.1414.030

1 Titration vessel 20 mL........................................................................................ 6.1415.220

1 Titration vessel 50 mL........................................................................................ 6.1415.250

1 Set of O-rings for the Titration vessel lid............................................................ 6.1244.040

1 Drying tube ........................................................................................................ 6.1403.040

1 Molecular sieve 250 g........................................................................................ 6.2811.000

2 Screw nipple for KF ........................................................................................... 6.2730.010

1 Stopper with septum, diameter 18 mm ............................................................. 6.2730.020

3 Stopper with nipple and O-ring .........................................................................6.2730.030

2 Septum (5 p.)..................................................................................................... 6.1448.010

1 Glass weighing spoon....................................................................................... 6.2412.000

2 Teflon stirring bar, length 16 mm....................................................................... 6.1903.020

2 Teflon stirring bar, length 25 mm....................................................................... 6.1903.030

1 Cover ................................................................................................................. 6.2723.130

1 Mains cable with cable socket, type CEE(22), V Cable plug to customer's specifications

type SEV 12 (Switzerland...)............................................................................. 6.2122.020

type CEE(7), VII (Germany...)........................................................................... 6.2122.040

type NEMA/ASA (USA...) ................................................................................. 6.2122.070

1 Vesuv 3.0 light, PC program for data acquisition and method backup

for 2 devices.................................................................................................. 6.6008.500

1 Instructions for Use for 787 KF Titrino ............................................................... 8.787.1003

1 Quick Reference for 787 KF Titrino.................................................................... 8.787.1013

787 KF Titrino

5.6. Scope of delivery and ordering designations

Options

Accessories to separate order and on payment of extra charge:

Burets

Auxiliary burets

765 Dosimat ......................................................................................................... 2.765.0010

776 Dosimat ......................................................................................................... 2.776.0010

Cable Titrino (activate pulse, line L6) — 765 or 776 Dosimat.............................. 6.2139.000

Exchange Units

V = 1 mL, .......................................................................................................... 6.3026.110

V = 5 mL, .......................................................................................................... 6.3026.150

V = 10 mL, .......................................................................................................... 6.3026.210

V = 20 mL, .......................................................................................................... 6.3026.220

V = 50 mL, .......................................................................................................... 6.3026.250

Titrating Stand and Stirrer

703 Ti Stand for rinsing and addition of fresh solvent,

with built-in magnetic stirrer.......................................................................... 2.703.0010

Cable Titrino — 703 Ti Stand ............................................................................... 6.2108.100

728 Magnetic stirrer.............................................................................................. 2.728.0040

Titration equipment

Equipment for KF titrations .................................................................................. 6.5609.000

Titration vessel, volumes

1... 50 mL ...................................................................................................6.1415.110

5... 70 mL ...................................................................................................6.1415.150

10... 90 mL ...................................................................................................6.1415.210

20... 90 mL ...................................................................................................6.1415.220

50... 150 mL...................................................................................................6.1415.250

70... 200 mL...................................................................................................6.1415.310

Titration vessel with thermostatic jacket, volumes

1... 50 mL ...................................................................................................6.1418.110

5... 70 mL ...................................................................................................6.1418.150

10... 90 mL, order 6.2036.000 holding ring separately ................................6.9914.023

20... 90 mL ...................................................................................................6.1418.220

50... 150 mL...................................................................................................6.1418.250

Titration vessel lid (5 openings) ..........................................................................6.1414.010

Magnetic stirring bars, length

12 mm............................................................................................................6.1903.010

16 mm............................................................................................................6.1903.020

25 mm............................................................................................................6.1903.030

787 KF Titrino

5.6 Scope of delivery and ordering designations

Electrodes and accessories

Double Pt-electrode with plug-in head, without cable ....................................... 6.0338.100

Electrode cable, 1m ........................................................................................... 6.2104.020

Printers

Custom-Drucker DP40-S4N .................................................................................2.140.0200

Cable Titrino – Custom DP40-S4N (25/9 pins)..................................................... 6.2125.130

Cable Titrino – Seiko DPU-414 ............................................................................. 6.2125.130

Cable Titrino – EPSON LX300+ (25/25 pins)...................................................... 6.2125.050

Cable Titrino – HP Desk Jet (serial interface) (25/25 pins)................................... 6.2125.050

Cable Titrino – HP Desk/Laser Jet (parallel IF)..................................................... 2.145.0330

Adapter for connection of printer/balance at the same COM .............................. 6.2125.030

Balances

Cable Sartorius – balances MP8, MC1 (9/25 pins) ..............................................6.2125.070

Cable Shimadzu – balances BX, BW ...................................................................6.2125.080

Ohaus Voyager, Explorer, Analytical Plus .................................................cable from Ohaus

Mettler AB, AG balances (interface LC-RS25).......................................... cable with balance

Mettler AT balance ............................................................................................ 6.2146.020

Mettler AM, PM balance ............................................ 6.2146.020+accessories from Mettler

Mettler balances with interface 016...........................................................cable from Mettler

Mettler balances with interface 011 or 012........................................................... 6.2125.020

Mettler PG, AB-S, AX, MX, UMX balances ...................................... 6.2134.120+6.2125.170

AND balances (with RS232 interface OP-03) ....................................................... 6.2125.020

Precisa balances .................................................................................................. 6.2125.080

Adapter for connection of printer/balance at the same COM .............................. 6.2125.030

Connection of 768 KF Oven

KF Oven................................................................................................................ 2.768.0010

Cable 795 KFT Titrino — 768 KF Oven, control ................................................... 6.2141.010

787 KF Titrino

5.6. Scope of delivery and ordering designations

PC connection

Cable Titrino – PC (25/25 pins) ............................................................................ 6.2125.060

Cable Titrino – PC (25/9 pins) ......................................................... 6.2125.060+6.2125.010

RS232 C extension cable (25/25 pins)................................................................. 6.2125.020

Vesuv 3.0, PC program for data acquisition and method backup

for up to 64 devices ...................................................................................... 6.6008.200

Sample Changer

730 Sample Changer, 1 working station, 1 pump and 1 valve ............................ 2.730.0010

730 Sample Changer, 1 working station, 2 pumps and 2 valves ........................ 2.730.0020

730 Sample Changer, 2 working stations, 2 pumps and 2 valves....................... 2.730.0110

730 Sample Changer, 2 working stations, 4 pumps and 4 valves....................... 2.730.0120

760 Sample Changer, 1 working station.............................................................. 2.760.0010

760 Sample Changer, 1 working station, no pumps and 2 stirrer connections... 2.760.0020

for KFT applications

774 Oven Sample Processor ............................................................................... 2.774.0010

Cable Titrino — 730, 760, 774 Sample Changer ................................................. 6.2141.020

Cable 2x Titrino — 730, 760 Sample Changer..................................................... 6.2141.030

Cable Titrino — 730, 760 Sample Changer+665, 725, 765, 776 Dosimat ......... 6.2141.040

Cable Titrino — 730, 760 Sample Changer+ 2x 665, 725, 765, 776 Dosimat ... 6.2141.050

Cable Titrino — Control Unit 664 for Sample Changer 673/674.......................... 3.980.3560

787 KF Titrino

Index

Display texts are in bold characters

Accessories ............................................. 74ff

activate pulse:........................................ 24

actual KF reag......................................... 19

Analogue output

connection of a recorder.......................59

resolution...............................................59

test.........................................................45

auxiliaries ...............................................21

-b ...............................................................32

Balance

connection............................................. 55

selection ................................................20

balance: .................................................... 20

baud rate:................................................. 20

blank..........................................................32

BLANK determination................................ 18

Cable .......................................................75ff

calculation ...............................................31

Calculation................................................. 31

CE ..............................................................71

Certificates............................................... 71ff

change solvent .........................................39

check electrode........................................ 39

check exchange unit ................................ 39

Computer

connection............................................. 60

conditioning ....................................... 11, 25

conditioning: ...........................................24

Configuration .............................................19

Conformity ................................................. 70

Connection

balance.................................................. 55

cable....................................................75ff

computer ............................................... 60

electrode................................................61

KF Oven.................................................57

Oven Sample Processor ....................... 57

printer ....................................................54

recorder ................................................. 59

sample changer ....................................58

stirrer...................................................... 53

Ti stand..................................................53

Contrast of display ......................................3

Control

lines .....................................................65ff

cylinder empty .........................................39

-d .............................................................. 32

Data

input ........................................................ 7

output .................................................... 38

transmission (RS232)

problems........................................... 41

data bit: .................................................. 20

date ........................................................... 21

Decimal places ......................................... 34

Delete

statistics values..................................... 32

delete n= .................................................. 32

device label............................................. 21

dialog language ........................................ 19

dialog:...................................................... 21

Display

contrast ................................................... 3

drift ........................................................36

display KFR vol.:.................................... 21

division by zero ..................................... 39

divisor...................................................... 32

dos.rate .................................................... 22

Dosing......................................................... 3

Drift ............................................................ 36

drift corr.:............................................. 32

drift value............................................... 32

Earthing ....................................................... 5

Electrode

connection ............................................ 61

electrode test: ....................................... 21

EP .............................................................. 19

Error messages....................................... 39ff

Examples................................................. 10ff

Exchange unit ....................................... 3, 74

extr.time .................................................. 22

EXX ............................................................. 40

Fabrication number..................................... 5

factor........................................................ 31

filling rate............................................. 19

Formulas ................................................... 33

GLP ........................................................... 69

handshake: ................................................ 20

787 KF Titrino

Index

I(pol)........................................................ 19

I/O-lines .................................................... 65f

ident......................................................... 31

Identification

request .................................................. 24

Initialise RAM............................................. 51

Inputs......................................................... 65

Inquiry.......................................................... 7

Instrument number...................................... 5

ISO............................................................. 72

Key

<CALC DATA> ................................ 6, 31

<CLEAR> .............................................. 6

<CONFIG> ...................................... 6, 19

<DOS> .................................................. 3

<DRIFT> .......................................... 6, 36

<ENTER> .............................................. 6

<MODE> .........................................6, 18

<PARAM>........................................ 6, 22

<PRINT>.......................................... 6, 38

<QUIT>.................................................. 6

<SELECT>............................................. 6

<START> ........................................... 3, 6

<STOP/FILL>......................................... 3

<STOP>................................................. 6

<UNIT> ............................................ 6, 34

Keypad ........................................................ 6

Oven...................................................... 57

reagent volume counter........................ 19

KF device settings .................................. 19

KFR volume

display................................................... 21

KFT ............................................................ 18

Language .................................................. 19

LED

Cond. ...................................................... 3

limit KF reag. ......................................... 19

Mains........................................................... 5

Manual operation ...................................... 6ff

max.rate .................................................... 22

mean ........................................................... 32

Mean

delete result........................................... 32

Menu ........................................................... 7

min.volume incr....................................... 22

Mode

selection................................................ 18

Operating course ...................................... 8ff

Ordering designations ............................ 73ff

Outputs ..................................................... 65

Oven.......................................................... 57

Parameter ................................................. 22

parity:...................................................... 20

peripheral units ..................................... 20

Perturbation ............................................ 39ff

Pin assignment

Socket "Remote" .................................. 65f

polarizer .................................................. 19

preselections..................................... 24, 37

Printer

connection ............................................ 54

problems............................................... 41

selection................................................ 20

Printing ...................................................... 38

Problems

printer.................................................... 41

program...................................................... 21

RAM initialisation....................................... 51

reagent volume counter............................ 19

record:...................................................... 20

Recorder connection ................................ 59

Remote control

via "Remote" lines ............................... 65ff

via RS232.............................................. 68

Remote lines ............................................. 67

Report

output.................................................... 37

printing.................................................. 38

selection.......................................... 37, 38

report:...................................................... 37

req.ident: ................................................ 24

req.smpl size:......................................... 24

res.tab:.................................................... 32

Result

calculation............................................. 31

delete .................................................... 32

display................................................... 38

report .................................................... 37

result unit: ............................................ 34

RS control: .............................................. 20

RS232 interface ........................................ 68

configuration......................................... 20

RS232 settings......................................... 20

run number ................................................ 21

Sample

changer................................................. 58

Scope of delivery ...................................... 73

Selection

balance ................................................. 20

mode..................................................... 18

787 KF Titrino

Index

printer ....................................................20

send to: .................................................... 20

Sensor

connection............................................. 61

Series number .............................................5

Setup .......................................................53ff

smpl size...................................................31

smpl size unit:........................................ 34

start V ......................................................22

Start volume...............................................22

statistics................................................. 32

Statistics

delete results ......................................... 32

display ...................................................38

Stirrer connnection ....................................53

stop bit:...................................................20

stop crit:................................................. 22

Stop criteria ...............................................28

stop drift................................................. 22

stop V ........................................................ 22

stop V reached .........................................39

system error 3 .........................................39

t(delay) .................................................... 22

Technical specifications............................ 63

time ........................................................... 21

titer ......................................................... 31

TITER with H2O or std. ............................. 18

TITER with Na2Tart*2H2O ........................ 18

Titration

parameters............................................ 22

titration parameters .............................. 22

Troubleshooting ...................................... 39ff

Tutorial....................................................... 8ff

U(pol)........................................................ 19

Unit

result...................................................... 34

sample size ........................................... 34

Validation................................................... 69

Values entry................................................. 7

wait ........................................................... 11

Warranty .................................................... 70

787 KF Titrino

Metrohm 787KF User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of contents

1 Introduction

1.1 Instrument description

1.2 Controls and parts

2 Manual operation

2.1 Keypad

2.2 Principle of data input

2.3 Tutorial

2.3.1 Entering data, setting the dialog language

2.3.2 Titer determination

2.3.3 Karl Fischer titration

2.3.4 Drift

2.4 Selection of the mode, key <MODE>

2.5 Configuration, key <CONFIG>

2.6 Parameters, key <PARAM>

2.6.1 Parameters

2.8 Result calculations

2.9 Drift display, key <DRIFT>

2.10 Data output

3 Error messages, Troubleshooting

3.1 Error and special messages

3.2 What can you do if the data transfer does not work?

3.3 Diagnosis

3.3.1 General

3.3.2 Procedure

3.3.3 Equipment required:

3.3.4 Diagnosis steps

3.4 Initialise and test RAM

3.5. Releasing a locked spindle with inserted Exchange Unit

4 Preparations

4.1 Setting up and connecting the instruments

4.1.1 Titrino with Titration Stand or Stirrer

4.1.2 Connection of a printer

4.1.3 Connection of a balance

4.1.4 Connection of a KF Oven

4.1.5 Connection of the 774 Oven Sample Processor

4.1.6 Connection of a Sample Changer

4.1.7 Connection of a recorder

4.1.8 Connection of a computer

4.2 Connection of electrodes, preparing titration vessel

5 Appendix

5.1 Technical specifications

5.2 Pin assignment of the "Remote" socket

5.2.1 Lines of the "Remote" socket during the titration

5.3 RS232 interface

5.4 Validation / GLP

5.5 Warranty and conformity

5.5.1 Warranty

5.5.2 EU Declaration of conformity

5.5.3 Certificate of Conformity and System Validation

5.6 Scope of delivery and ordering designations

Index