Metrohm 785DMP User Manual

CH-9101 Herisau/Switzerland Tel. +41 71 353 85 85 Fax +41 71 353 89 01 CompuServe 100031,3703 Internet http://www.metrohm.com

785 DMP Titrino

Instructions for Use

8.785.1003

99.07 Ti

Table of contents

1 Overview...................................................................................................................1

2 Manual operation .....................................................................................................4

2.1 Keypad.......................................................................................................................... 4

2.2 Principle of data input .................................................................................................. 5

2.3 Text input......................................................................................................................6

2.4 Configuration, key <CONFIG>................................................................................... 7

2.5 Selection of the mode, key <MODE>...................................................................... 13

2.6 Parameters, key <PARAM> ..................................................................................... 14

2.6.1 Parameters for DET and MET.............................................................................14

2.6.2 Parameters for SET ............................................................................................. 24

2.6.3 Parameters for MEAS.......................................................................................... 33

2.6.4 Parameters for CAL............................................................................................. 35

2.6.5 Parameters for TIP............................................................................................... 37

2.7 Result calculations.....................................................................................................38

2.8 Statistics calculation...................................................................................................41

2.9 Common variables..................................................................................................... 43

2.10 Data output...............................................................................................................44

2.10.1 Reports for the output at the end of a determination....................................... 44

2.10.2 Display of the titration curve..............................................................................47

2.11 User name, key <USER>....................................................................................... 48

2.12 TIP, Titration procedure............................................................................................49

2.13 Method memory, keys <USER METH> and <CARD>........................................ 53

2.13.1 Key <USER METH>......................................................................................... 53

2.13.2 Key <CARD> ................................................................................................... 55

2.14 Calibration data, key <CAL.DATA>........................................................................ 58

2.15 Current sample data, key <SMPL DATA>............................................................. 59

2.16 Silo memory for sample data...................................................................................60

2.17 Storing determination results and silo calculations ................................................ 63

2.17.1 Storing determination results............................................................................ 63

2.17.2 Silo calculations................................................................................................. 64

3 Operation via RS232 Interface (green part)............................................................67

3.1 General rules..............................................................................................................67

3.1.1 Call up of objects................................................................................................. 68

3.1.2 Triggers................................................................................................................ 69

3.1.3 Status messages.................................................................................................70

3.1.4 Error messages...................................................................................................73

3.2 Remote control commands.......................................................................................77

3.2.1 Overview..............................................................................................................77

3.2.2 Description of the remote control commands....................................................97

3.3 Properties of the RS 232 Interface........................................................................... 126

3.3.1 Handshake ........................................................................................................ 126

3.3.2 Pin Assignment.................................................................................................. 129

3.3.3 What can you do if the data transfer does not work?....................................... 131

785 DMP Titrino

Table of contents

4 Error messages, Troubleshooting...................................................................... 133

4.1 Error and special messages....................................................................................133

4.2 Diagnosis..................................................................................................................138

4.3 Initialize RAM............................................................................................................ 148

4.4 Releasing a locked spindle with inserted Exchange Unit....................................... 149

5 Preparations.........................................................................................................150

5.1 Setting up and connecting the instruments ............................................................ 150

5.1.1 Titrino with Stirrer or Titration Stand.................................................................. 150

5.1.2 Connection of a printer......................................................................................151

5.1.3 Connection of a balance...................................................................................152

5.1.4 Connection of a Sample Changer ....................................................................153

5.1.5 Connection of a computer.................................................................................154

5.1.6 Connection of a Remote Box............................................................................ 155

5.2 Connection of electrodes, preparing titration vessel...............................................158

6 Appendix ..............................................................................................................161

6.1 Technical specifications...........................................................................................161

6.2 Pin assignment of the "Remote" socket................................................................... 164

6.2.1 Lines of the "Remote" socket during the titration.............................................. 166

6.2.2 Possible configurations of the activate pulse in SET and CAL........................ 167

6.3 Titrino validation........................................................................................................ 168

6.3.1 Electronic tests .................................................................................................. 168

6.3.2 Wet tests............................................................................................................ 168

6.3.3 Maintenance and adjustment of the Titrino...................................................... 168

6.4 Warranty and certificates.......................................................................................... 169

6.4.1 Warranty.............................................................................................................169

6.4.2 Certificate of Conformity and System Validation..............................................170

6.5 Scope of delivery and ordering designations.......................................................... 172

Index ........................................................................................................................ 175

785 DMP Titrino

Overview

Herisau Switzerland

f = 50 - 60 Hz

S = 15 W

Pol

Ref

Ind I

Ind II

Key-

board

RS 232

1 Overview

Front view of instrument: Rear view of instrument:

Remote

1.785 Nr.

100 - 240 V

Pt 100/1000

Made by Metrohm

785 DMP Titrino

Overview

Front view of instrument:

1 Exchange Unit

2 Display

3 Control keys and indicator lamps on the Titrino

Key < > Power switch

Key < 4 > Switching stirrer ON/OFF

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 (5).

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 lamps: "COND." Lamp flashes when conditioning is performed

and the titration vessel is still wet. It is on if con-

ditioning is ok. "STATISTICS" Lamp is on when the "statistics" function

(calculation of mean and standard deviation) is

on. "SILO" Lamp is on when silo memory (for sample data)

is on.

4 Setting of display contrast

5 Controls the dosing rate during manual dosing with <DOS> and

subsequent filling

6 Opening for the memory card

785 DMP Titrino

Rear view of instrument:

7 RS232 interfaces

2 separate interfaces for the connection of printer, balance, and computer

8 Remote lines (input/output)

for the connection of the Remote Box, Sample Changers, robots etc.

9 Connection of electrodes and temperature sensor

• 2 high-impedance measuring inputs for pH and U measurements. They can either be used separately or for differential potentiometry, see page 158. Important: If you work with both measuring inputs in the same vessel, the same reference electrode must be used.

• 1 measuring input for polarized electrodes, e.g. KF electrode

• 1 measuring input for PT100 or Pt1000 temperature sensor

Overview

10 Connection for separate keypad

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 Connection for stirrer

728 Magnetic Stirrer, 722 Rod Stirrer, 703 or 727 Ti Stand Supply voltage: 10 VDC (I ≤ 200 mA)

13 Rating plate

with fabrication, series and instrument number

785 DMP Titrino

2.1. Keypad

SILO

–9STATISTICS

MEAS/HOLD

+8USER

→↑←

↓

STOP

START

CARD

/6CAL.DATA

USER METH

)3DEF

(2C-FMLA

MODE

REPORTS

CURVE

2 Manual operation

2.1 Keypad

PARAMCONFIG

SMPL DATA

QUIT

ABC

–

6.2132.070

CLEAR ENTER

CONFIG Configuration. PARAM Parameters. SMPL DATA Sample data. STATISTICS ON/OFF switching of statistics calcu-

lations of consecutive determination, see page 41.

MEAS/HOLDON/OFF switching of measurements

between titrations and hold during titrations.

SILO ON/OFF switching of silo memory for

sample data, see page 60. CAL.DATA Calibration data, see page 58. CARD Management of memory card, see

;

page 55. C-FMLA Calculation values, see page 40. DEF Formulas, data output, sequence for

TIP, see page 38ff. USER METH Management of internal method mem-

ory, see page 53. PRINT Printing of reports, see page 45. REPORTS Result output. MODE Mode selection, see page 13. USER User name, see page 48. CURVE Switching result/curve display. ←,→ Selection of special values (dialog

marked with ":") ↑,↓ Cursor key for navigation. CLEAR Clears values, set special values. ENTER Stores values. STOP Stops methods. QUIT Quits inquiries, waiting times, printing. START Starts methods.

The third functions (inscriptions in the triangle) on the keys of the keypad are used for formula entry, see page 38.

785 DMP Titrino

2.2 Principle of data input

remote box: OFF

• If you press a key you will find a group of inquiries in the display.

configuration >monitoring >peripheral units >auxiliaries >RS232 settings COM1 >RS232 settings COM2 >common variables

configuration >peripheral units send to COM1: IBM send to COM2: IBM man.reports to COM: 1 balance: Sartorius stirrer control: OFF

configuration >monitoring >peripheral units >auxiliaries >RS232 settings COM1 >RS232 settings COM2 >common variables

Example key <CONFIG>:

In the first line you see where you are: You pressed

key <CONFIG> and you are now in the inquiries "configuration".

• The cursor is inverted. In our example the cursor is on the inquiry ">monitoring". You can move the cursor up and down with keys <↑> and <↓>.

• If a dialog text is marked with ">", it contains a group of inquiries itself. You go to this group pressing <ENTER>. Example inquiries of "peripheral units":

The first two lines indicate again where you are.

Then you find the inquiries. If a dialog text of an inquiry is marked with ":", you can select a value with keys <←> and <→> (forward/backward).

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

• With key <QUIT> you move one level up, in our example you go back to ">peripheral units".

If you press <QUIT> once more you quit the in-

quiries in "configuration" altogether.

• If you can scroll, ↓ or ↑ appear in the right lower or upper corner of the display.

2.2 Principle of data input

785 DMP Titrino

2.3. Text input

REPORTS

2.3 Text input

Example storing a method:

user methods >store method method name: ********

<CLEAR>

ABC

user methods >store method: method name:

ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz µ°!"#$&'()*+,-./ 0123456789

<QUIT>

user methods >store method method name: Text

<ENTER>

• Press key <USER METH>. Place the cursor to ">store method" and press <ENTER>. The name of the method which is currently in the working memory is displayed.

• Delete this name with <CLEAR>.

• Open the "text writing mode" with key <ABC>.

You can now select the desired character by means of the cursor keys, then confirm this character. Select the next character... When you confirmed the last character, i.e. your name is complete, you quit the text writing mode with <QUIT>. Confirm now the name with <ENTER>.

• During text input you can correct typing errors with <CLEAR>: <CLEAR> deletes the characters one by one.

• If you wish to modify an existing name (e.g. if you have names like Text 1, Text 2, Text 3), do not delete the existing name before you start the text input mode. Proceed then as follows:

1. Press <USER METH>, place the cursor to ">store method" and press <ENTER>.

2. Open the text writing mode directly: Press key <ABC>.

3. <CLEAR> now deletes the characters one by one or you can add additional characters.

4. If your text is complete, leave the text writing mode with <QUIT> and confirm the text with <ENTER>.

785 DMP Titrino

2.4 Configuration, key <CONFIG>

Key <CONFIG> serves to enter device specific data.

CONFIG

configuration >monitoring >peripheral units >auxiliaries >RS232 settings COM1 >RS232 settings COM2 >common variables

The set values apply to all modes.

monitoring:

Monitoring of instrument validation, pH calibration, service interval and printout of diagnostic report. peripheral units: Selection of printer, balance, stirrer control and COM for manual report output. auxiliaries: e.g. setting of dialog language, date time, type of result display. RS232 settings COM1 and 2: RS parameters for the COM's. common variables: Values of common variables.

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

2.4 Configuration, key <CONFIG>

>monitoring

validation: OFF

time interval 365 d

time counter 0 d

calibration: OFF

Monitoring functions

Monitoring the validation interval (ON, OFF)

Monitoring is carried out at the end of the titrations and when the Titrino is switched on. If the monitoring responds the message "validate instrument" appears. The message vanishes with <CLEAR>. At the same time the counter is reset to zero.

If "on" has been set:

Time interval for validation (1...9999 d)

see also page 126. Identical for COM2.

Baud rate (300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200)

Data bit (7, 8)

Stop bit (1, 2)

Parity (even, odd, none)

Handshake (HWs, SWline, SWchar, none)

see page 126.

Values of the common variables

C30 0.0 etc.

Common variables C30...C39 (0.. ± 999 999)

The values of all common variables are displayed. For creating of common variables see page 43.

785 DMP Titrino

2.4 Configuration, key <CONFIG>

Settings with key <CONFIG> and power ON

Proceed as follows:

1. Switch the Titrino OFF.

2. Press <CONFIG> and keep it pressed during switching the Titrino ON. The display shows the following:

Setup >lock >curve

>lock

<configuration>: OFF

<parameters>: OFF <smpl data>: OFF

recall method: OFF store method: OFF delete method: OFF

lock:

Locking keys <CONFIG>, <PARAM> and <SMPL DATA>, and the functions "recall method", "store method" and "delete method" of the internal method memory in the Titrino. curve: Changes the appearance of the curve printout.

lock

"ON" means that the corresponding function is not accessible anymore.

The corresponding key is locked.

The corresponding function in the internal method memory of the Titrino is locked.

785 DMP Titrino

2.4. Configuration, key <CONFIG>

>curve

grid: ON

frame: ON

scaling: Full

width 0.75

length 0.1

curve

The settings are valid for COM1 and COM2. If you change the printer type, the following settings are initialized according to the printer.

Grid drawing (ON, OFF)

Frame drawing (ON, OFF)

Type of scaling (Full, Auto)

Full: The scaling goes from the greatest to the smallest value. auto: The scaling from tick to tick, e.g. the smallest/greatest values lie in between the first/last tick.

Width (0.2...1.00)

1 is greatest width. If you set 1 you may loose the label at the right margin.

Length (0.01...1.00) Volume axis

Curve length per cylinder volume

0.01 100 cm

0.1 10 cm

0.5 2 cm 1 1 cm Time axis:

Curve length

0.01 100 cm

0.1 10 cm

0.5 2 cm 1 1 cm

785 DMP Titrino

2.5 Selection of the mode, key <MODE>

MODE

2.5 Selection of the mode, key <MODE>

;

–

mode mode: DET measured quantity: pH

Press key <MODE> until the desired mode is displayed and confirm with <ENTER>. Select the measured quantity pH, U, Ipol, Upol, (T) with <←> or <→> and confirm it also with <enter>.

The following modes can be selected:

• DET: Dynamic Equivalence-point Titration

• MET: Monotonic Equivalence-point Titration

• SET: Set Endpoint Titration.

• CAL: pH Calibration.

• MEAS: Measuring.

• TIP: Titration Procedure. Linking of various

commands and methods to a titration procedure.

These standard modes are equipped with a set of standard parameters. They only need few settings in order to be ready to work. TIP is an empty "shell". The TIP sequence has to be defined with <DEF>, see page 49.

You will find a survey of the modes in the short Instructions for use, page 10.

785 DMP Titrino

2.6. Parameters, key <PARAM>

2.6 Parameters, key <PARAM>

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

PARAM

2.6.1 Parameters for DET and MET

determine the modes. Values marked with "cond." are accessible during the conditioning in the SET mode. "**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.

parameters >titration parameters >stop conditions >statistics >evaluation >preselections

>titration parameters

meas.pt.density 4

DET

titration parameters

determine the course of the titration and measured value acquisition.

stop conditions:

Parameters for the automatic termination of the titration. statistics: Calculation of mean values and standard deviation, see page 41. evaluation: Parameters for the evaluation of EP's, fix EP's, and pK/HNP. preselections: ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.

General titration parameters

Measuring point density (0...9)

0 means highest density, 9 lowest. Selection of the meas.pt.density, see page 20.

min.incr. 10.0 ul

DET

V step 0.10 ml

MET

Minimum increment (0...999.9 uL)

The increment is dispensed at the beginning of the titration and in the region of the equivalence point.

Size of volume increment (0...9.999 mL)

Dosing step. Small volume increments are needed to determine blank values or to assure accuracy with highly unsymmetrical curves. Selection of size of the increment, see page 20.

785 DMP Titrino

2.6 Parameters, key <PARAM>

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

signal drift 50 mV/min **titr.

equilibr.time 26 s **titr.

Dosing rate for volume increments (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

Drift criterion for measured value acquisition. (input range depends on the measured quantity: pH, U, Ipol: 0.5...999 mV/min, OFF Upol: 0.05...99.9 uA/min, OFF)

<CLEAR> sets "OFF". This type of measured value acquisition is often called an equilibrium titration. "OFF" means that the measured value is acquired after an equilibration time. This may be useful for slow titration reactions or when the response of the electrode assembly is slow.

Waiting time for measured value acquisition. (0...9999 s, OFF)

<CLEAR> sets "OFF". If no new equilibration time has been entered, the Titrino calculates an equilibration time appropriate to the drift, see page 19. The measured value is acquired as soon as the first criterion (drift or time) has been met.

start V: OFF

start V 0.0 ml

factor 0

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

Type of start volume (OFF, abs., rel.)

"OFF": start volume switched off "abs": absolute start volume in mL "rel.": relative start volume to sample size.

If "abs." is set:

Absolute start volume (0...999.99 mL)

If "rel." is set:

Factor for relative start volume (0...±999 999).

Calculated as: start V in mL = factor * sample size

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

<CLEAR> sets "max.". 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

785 DMP Titrino

2.6. Parameters, key <PARAM>

pause 0 s **titr.

meas.input: 1

I(pol) 1 uA

U(pol) 400 mV

electrode test: OFF

temperature 25.0 °C

Waiting time (0...999 999 s)

Waiting time, e.g. for equilibration of the electrode after the start or reaction time after dosing of start volume. The pause can be aborted with <QUIT>.

Measuring input for pH and U (1, 2, diff.)

Request for measuring input for pH and U. Measuring input 1 or 2 or differential amplifier; connection of electrodes, see page 158.

With polarized electrodes, instead of the measuring input the

polarization current (-127...127 uA)

or the

polarization voltage (-1270...1270 mV, in steps of 10 mV)

is inquired.

Electrode test (OFF, ON)

Test for polarized electrodes. Performed on changeover from the inactive standby state to a measurement. "OFF" means that the test is not performed.

Titration temperature (-170.0...500.0 °C)

The temperature is continuously measured if a T sensor is connected. This parameter is used for temperature compensation in pH titrations.

>stop conditions

stop V: abs. **titr.

stop V 99.99 ml **titr.

factor 999999 **titr.

stop pH OFF **titr.

Stop conditions for the titration

If several stop conditions have been set, the criterion which is met first applies.

Type of stop volume (abs., rel., OFF)

"abs.": absolute stop volume in mL. "rel.": relative stop volume to sample size. "OFF": stop volume switched off. Stop volume is not

monitored.

If "abs." is set:

Absolute stop volume (0...9999.99 mL)

If "rel." is set:

Factor for relative stop volume (0...±999 999)

Calculated as: Stop V in mL = factor * sample size

Stop at measured value (input range dependent on measured variable:

pH: 0... ± 20.00, OFF U, Ipol: 0... ± 2000 mV, OFF Upol: 0... ± 200.0 uA, OFF)

<CLEAR> sets "OFF". "OFF" means that the criterion is not monitored.

785 DMP Titrino

2.6 Parameters, key <PARAM>

stop EP 9 **titr.

filling rate max. ml/min **titr.

>evaluation

EPC 5

Stop after a number of EP's have been found (1...9, OFF)

<CLEAR> sets "OFF". "OFF" means that the criterion is not monitored.

Filling rate (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

EP evaluation/recognition

See page 20 ff.

Equivalence point criterion (input range depends on mode. For DET:

0...200 For MET: pH: 0.10...9.99 U, Ipol: 1...999 mV Upol: 0.1...99.9 uA)

Threshold for the size of the jump, see page 22.

EP recognition: all

low lim.1 pH -20.00

up lim.1 pH 20.00

Recognition of EP's which fulfill the EP criterion. (all, greatest, last, window, OFF)

Selection of equivalence point recognition: "all": All equivalence points are recognized. "greatest": Only the greatest (steepest) equivalence

point is recognized.

"last": Only the last equivalence point is

recognized.

"window": Only EP's in specified windows are

recognized. "OFF": Evaluation switched off. If "window" is selected, lower and upper limits of windows are inquired.

Lower limit of window 1

and

upper limit of window 1 (Input ranges for both inquiries depend on the measured quantity): pH: 0...±20.00, OFF U, Ipol: 0...±2000 mV, OFF Upol: 0...±200.0 uA, OFF)

<CLEAR> sets "OFF". Only equivalence points are recognized which lie within the set lower and upper limits. The equivalence point numbering is defined with the windows, see page 22. Window inquiries continue until the lower limit is set to "OFF". Up to 9 possible windows. Always set both limits to ≠ OFF for a valid window.

785 DMP Titrino

2.6. Parameters, key <PARAM>

fix EP1 at pH OFF

pK/HNP: OFF

>preselections

req.ident: OFF

Interpolation of volumes at fixed times (input range depends on the measured quantity: pH: 0...±20.00, OFF U, Ipol: 0...±2000 mV, OFF Upol: 0...±200.0 uA, OFF)

<CLEAR> sets "OFF". If a fix end point has been set, the volume value for the input measured value is interpolated from the curve, see also page 23. The volume values are available as C5X. Fix EP's are inquired until "OFF" is set. Up to 9 fix EP's.

Evaluation of pK or HNP (ON, OFF)

pK evaluation in case of pH titrations and half neutralization potential for U, see page 23.

Preselections for the sequence

Request of identifications after start of titration. (id1, id1&2, all, OFF)

After start, sample identifications can be inquired automatically: Only id1, id1 & id2, all three id's or no inquiries.

req.smpl size: OFF

limit smpl size: OFF

low lim. 0.0 up lim. 999999

activate pulse: OFF

Request of sample size after start of titration (value, unit, all, OFF)

"all" requests the value, then the unit.

Limiting value check for sample size (ON, OFF)

With "on" the error message "sample size out." appears if the entry is outside the set limits. The limiting values are shown in the display window. The absolute value of the limit is checked during sample size input and during the calculation of the results. If "on" has been set:

Lower limit for sample size (0.0...999 999) Upper limit for sample size (0.0...999 999)

Pulse output on I/O line "activate" (L6, pin 1) of the remote socket (ON, OFF)

see page 166.

785 DMP Titrino

Titration sequence of DET and MET

<START>

(Start delay)

(Start conditions)

Stop conditions

Calculations

(Stirrer OFF)

Data output

2.6 Parameters, key <PARAM>

(Activate pulse)

(Stirrer ON)

(Request ident.)

(Request smpl size)

Titration: Dispense increments Acquire meas.values

After the start, the activate pulse is outputted and the stirrer switched on.

The start delay time is waited off. The sample identifications and the sample size are re-

quested. The start volume is dispensed (no meas.value acquisition)

and the pause is waited off. During the titration the volume increments are dispensed

and after each increment a measured value is acquired. Meas.values are either acquired drift controlled ("equilibrium titration") or a after a fixed waiting time. If you have not intentionally changed the equilibration time, it is calculated according to the formula:

150

equilibr.time in s = —————— + 5

ûDrift + 0.01 The criterion (drift or equilibration time) which is first met applies. This avoids "infinite" titrations. If the parameter "signal drift" is set "OFF", the measured values are acquired after a fixed equilibration time.

The titration is terminated according to the first criterion which is met.

The stirrer is switched off. Evaluations and calculations are carried out. Data are outputted.

785 DMP Titrino

2.6. Parameters, key <PARAM>

Reagent feeding and EP evaluation of DET

The reagent feeding of DET is similar to the controlling, a human being would apply in manually controlled titrations: Great volume increments are dosed far away from the EP, small increments in the region of the equivalence point. The size of the volume increments dosed by the Titrino is determined by the following parameters:

meas.pt.density The measuring point density is entered as a relative

value from 0...9. Input of a low number means small volume increments, i.e. a large measuring point density on the curve. A curve results which reproduces all fine details. "Fine details", however, also include signal noise, which can easily lead to unwanted equivalence points. A high number, i.e. low measuring density, on the other hand, allows a more rapid titration. The standard value of 4 is suitable for most cases. If you work with small cylinder volumes (1 or 2 ml), a small measuring point density may be advisable. In these cases you should also lower the drift for meas.value acquisition and set a higher EPC.

min.incr. Defines the minimum possible increment. This minimum

increment is dosed at the beginning of the titration and in the region of the equivalence point (for steep curves). Use low minimum increments only, if small volumes of titrant consumption are expected, e.g. in micro titrations; otherwise unwanted equivalence points may arise. The standard value of 10.0 uL is suitable for most cases.

EPC

The EP's are evaluated according to a special METROHM procedure which is so sensitive that even weak equivalence points are determined correctly.

Equivalence Point Criteria. The preset EPC is compared to the found ERC (Equivalence point Recognition Criteria) for each evaluated equivalence point. The size of the ERC is displayed in the titration curve, see page 47. The ERC is the first derivative of the titration curve overlaid with a mathematical function so that small maxima become higher and great maxima smaller. EP's whose ERC is below the preset EPC will not be recognized. For most cases the standard value of 5 is suitable. The evaluation can be repeated at any time after the titration in a "dry run" with changed evaluation criteria. The old titration data are not deleted until a new titration is started.

785 DMP Titrino

2.6 Parameters, key <PARAM>

Reagent feeding and EP evaluation of MET

In monotonic titrations, the volume increment is constant over the whole titration curve.

V step Volume increment.

A prerequisite for good accuracy is the correct size of the volume increments. A good value is given by V step = 1/20 VEP (VEP = volume of the EP). In any case, the increment size should always be between 1/10 VEP and 1/100 VEP; with steep jumps preferably in the region of 1/100 and with flat jumps preferably in the region of 1/10. The accuracy of the evaluation can not be increased by dispensing small increments as the changes in the measured value can then be of the same order of magnitude as the noise. This can produce "ghost EP's"!

The EP's are localized with an algorithm which is based on Fortuin and has been adapted by METROHM for numeric procedures. (METROHM Bulletin 2, No. 10,

1971). Here, the greatest change in the measured value is sought (∆n). The exact equivalence point is determined with an interpolation factor, which depends on the delta values before and after ∆n:

VEP = V0 + ρ ∆V VEP: EP volume V0: Total dispensed volume before ∆

∆V: Volume increment ρ : Interpolation factor (Fortuin)

EPC

∆

+∆

n-2

+∆n+∆

n-1

n+1

+∆

n+2



(In certain cases there are only 3 or 1 summand). EP's whose ERC is below the preset EPC will not be recognized. For most titrations the standard value is suitable. The evaluation can be repeated at any time after the titration in a "dry run" with changed evaluation criteria. The old titration data are not deleted until a new titration is started.

785 DMP Titrino

2.6. Parameters, key <PARAM>

U/mV

V/ml

U/mV

V/ml

EP recognition criteria for DET and MET

The parameter "EP recognition" offers you a range of possibilities to ensure selection of the EP you are interested in: If the desired jump is very large, you can select the "greatest" jump (with DET the steepest jump will be evaluated). Thus you always obtain just one EP per titration (EP1). If you wish to determine the sum of different components (e.g. acid or base numbers), the "last" jump can be the correct one. And finally you can set a "window" for each expected EP.

EP windows EP windows are used

• to suppress disturbing influences and EP's which are not needed.

• to increase the liability for the calculation of the results. The EP windows make an

unequivocal assignment of the EP's possible: per window one EP is recognized; the numbering of EP's is defined by the windows so that even if EP's are missing, the calculations are still performed with the correctly assigned EP volumes.

An EP window defines the range in which an EP is expected. EP's outside these ranges are not recognized. Windows are defined on the measured value axis.

EP window 2

EP window 1

EP 1

upper lim. 1

lower lim. 1

EP 1

+EP window 1

EP 2

2 EP's are recognized. Their numbering is defined by the windows: Window 1 ⇒ EP1 Window 2 ⇒ EP2

If more than 1 EP is expected, a window must be set for each EP.

Windows must not overlap. They may only touch each another.

Rule: If there are more than 1 EP in a window, the first jump is recognized as EP1, the second is not recognized. EP1 is marked as EP1 + to indicate that more than one EP has been found in the window

785 DMP Titrino

2.6 Parameters, key <PARAM>

Fix EP's

Fix EP's allow determination of the associated volume value for every inputted measured value on the titration curve. This function is useful for performing standard methods such as TAN/TBN determinations. For the evaluation of fix EP's, the pH calibration is advisable. The volume values of the fix EP's are available for the calculation as C5X: Fix EP1 ⇒ C51 : Fix EP9 ⇒ C59 Maximum 9 fix EP's are possible.

pK and HNP evaluation

The following relation (Henderson-Hasselbach), derived from the law of mass action, exists between the activities of a conjugate acid-base pair in aqueous solutions:

pH = pK + log (aB/aA) When the activities aB = aA, then pH = pK is valid. This value corresponds to the pH at the half neutralization point and can be taken from the titration curve. For pK determinations, a careful pH calibration is necessary. The pK value determined is an approximate value owing to the fact that the ionic strength of the solution has not been taken into account. For more exact values, titrations must be performed with decreasing ionic strength and the results extrapolated to zero ionic strength. The evaluation of pK's in aqueous solutions is limited to pK>3.5 due to the leveling effect of strong acids in aqueous solutions pK<10.5 because for weaker acids no inflection points can be found aqueous

solutions.

pK evaluation for polybasic acids and for acid mixtures is also possible. In non-aqueous solutions, the half neutralization potential (HNP) is often used instead of

pK. The HNP is evaluated accordingly. A start volume must be smaller than half of the equivalence point volume of the first EP. The pK/HNP values are available for calculation as C6X.

Minimum/maximum evaluation

Volumes at minimum or maximum voltage values are extrapolated. These volumes are accessible as variables C49 and C48 resp. and can be used in formulas.

785 DMP Titrino

2.6. Parameters, key <PARAM>

2.6.2 Parameters for SET

parameters >SET1 >SET2 >titration parameters >stop conditions >statistics >preselections

>SET1

EP at pH OFF **titr.

SET1, SET2:

Control parameters for EP1 and EP2.

titration parameters

are valid for the global titration sequence.

stop conditions:

Parameters for the termination of the titration. statistics: Calculation of mean values and standard deviation, see page 41. preselections: ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.

Control parameters for EP1 or EP2, resp.

Preset EP1 (input range depends on the measured quantity: pH: 0...±20.00, OFF U, Ipol: 0...±2000 mV, OFF Upol: 0...±200.0 uA, OFF)

<CLEAR> sets "OFF". If EP1 is "OFF", no further inquiries under SET1 appear.

dynamics OFF **titr.

max.rate 10.0 ml/min **titr.

Distance from EP where constant dosing should stop and controlling begins. (control range, input range depends on the measured quantity: pH: 0.01...20.00, OFF U, Ipol: 1...2000 mV, OFF Upol: 0.1...200.0 uA, OFF)

<CLEAR> sets "OFF". "OFF" means largest control range, i.e. low titration. Outside the control range, dispensing is performed continuously, see also page 30.

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

<CLEAR> sets "max.". This parameter determines primarily the addition rate outside the control range, see also page 30. 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

785 DMP Titrino

2.6 Parameters, key <PARAM>

min.rate 25.0 ul/min **titr.

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

t(delay) 10 s **titr.

stop time OFF s **titr.

Minimum dosing rate (0.01...999.9 uL/min)

This parameter determines the addition rate right at the start and the end of the titration, see also page 30. This parameter influences the titration speed and therefore its accuracy very strongly: A smaller min.rate results in a slower titration.

Type of stop criteria (drift, time)

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

Titration stops if there is no dosing during t(delay). (0...999 s, INF)

<CLEAR> sets "INF" Switch off when the end point is reached and the set time after the last dispensing has elapsed. If "INF" is set, an inquiry regarding the stop time appears. If t(delay) is "INF"

Stop after a time (0...999 999 s, OFF)

<CLEAR> sets "OFF". Stop after the set time after the start of the titration. "OFF" means no stop, i.e. titration for an "infinitely" long time.

>titration parameters

titr.direction: auto

pause 1 0 s **titr.

start V: OFF cond.

start V 0.0 ml cond.

General titration parameters

Direction is set automatically (+, -, auto)

auto: The direction is set automatically by the Titrino

(sign [U

- EP]).

first

+: Direction of higher pH, higher voltage (more

"positive"), larger currents.

- : Direction of lower pH, lower voltage, smaller currents.

The titration direction is fixed if two EP's are set. In this case, an input for titration direction has no meaning.

Pause 1 (0...999 999 s)

Waiting time before start volume, e.g. for equilibration of the electrode after the start. The waiting time can be aborted with <QUIT>.

Type of start volume (OFF, abs., rel.)

"OFF": start volume switched off "abs.": absolute start volume in mL "rel.": relative start volume to sample size.

If "abs." is set:

Absolute start volume (0...999.99 mL)

factor 0 cond.

785 DMP Titrino

If "rel." is set:

Factor for relative start volume (0...±999 999).

Calculated as: start V in mL = factor * sample size

2.6. Parameters, key <PARAM>

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

pause 2 0 s **titr.

extr.time 0 s **titr.

meas.input: 1

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

Pause 2 (0...999 999 s)

Waiting time after start volume, e.g. reaction time after dosing of a start volume. The waiting time can be aborted with <QUIT>.

Extraction time (0...999 999 s)

During this time the titration is already running. It will be not stopped (also if the EP is already reached) before the extraction time is terminated. The extraction time can be aborted with <QUIT>.

Measuring input (1, 2, diff.)

Inquiry only with measured quantities pH and U. Measuring input 1 or 2 or differential amplifier; connection of electrodes, see page 158.

I(pol) 1 uA

U(pol) 400 mV

electrode test: OFF

temperature 25.0 °C cond.

time interval 2 s cond.

With polarized electrodes, instead of the measuring input the

polarization current (-127...127 uA)

or the

polarization potential (-1270...1270 mV, in steps of 10 mV)

is inquired.

Electrode test (OFF, ON)

Test for polarized electrodes. Performed on changeover from the inactive state to a measurement. "OFF" means that the test is not performed.

Titration temperature (-170.0...500.0°C).

Temperature is measured at the start of the titration if a T sensor is connected. The value is used for temperature compensation in pH titrations.

Time interval (1...999 999 s)

Time interval for acquisition of a measured value into the measuring point list.

785 DMP Titrino

2.6 Parameters, key <PARAM>

>stop conditions

stop V: abs. **titr.

stop V 99.99 ml **titr.

factor 999999 **titr.

filling rate max. ml/min

Stop conditions for titration

If this is not "normal", i.e. after reaching the EP.

Type of stop volume (abs., rel., OFF)

"abs.": absolute stop volume in mL. "rel.": relative stop volume to sample size. "OFF": stop volume switched off. Stop volume

is not monitored.

If "abs." is set:

Absolute stop volume (0...9999.99 mL)

If "rel." is set:

Factor for relative stop volume (0...±999 999)

Calculated as: Stop V in mL = factor * sample size

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

>preselections

conditioning: OFF

display drift: ON cond.

drift corr: OFF cond.

drift value 0.0 ul/min cond.

req.ident: 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 (1st) end point. When conditioning is performed, the volume drift can be displayed during the conditioning:

Display of drift during conditioning (ON, OFF).

Volume drift.

Type of drift correction (auto, man. OFF)

auto: The value of the drift will be stored automatically at the start of the titration.

Value for manual drift correction (0...99.9 ul/min)

Request of identifications after start of titration (id1, id1&2, all, OFF)

After start, sample identifications can be requested automatically: Only id1, id1 & id2, all three id's or no inquiries.

785 DMP Titrino

2.6. Parameters, key <PARAM>

req.smpl size: OFF cond.

limit smpl size: OFF cond.

low lim. 0.0 cond. up lim. 999999 cond.

activate pulse: OFF cond.

Request of sample size after start of titration (value, unit, all, OFF)

"all" the value and the unit will be requested.

Limiting value check for sample size (ON, OFF)

Lower limit for sample size (0.0...999 999)

Upper limit for sample size (0.0...999 999)

Pulse output on I/O line 6 (L6, pin 1) of the remote socket (first, all, cond., OFF)

see page 167.

785 DMP Titrino

Titration sequence of SET

<START>

(Start delay)

(Start conditions)

Calculations

Data output

(Reconditioning)

(Stirrer OFF)

2.6 Parameters, key <PARAM>

(Activate pulse)

(Stirrer ON)

(Preconditioning)

(<START>

(Activate pulse)

(Start delay)

(Request ident.)

(Request smpl size)

(Extraction time)

Titration with test of

stop criterion

After the start, the activate pulse is outputted and the stirrer switched on.

The start delay time is waited off. If conditioning is on, the sample solution is titrated until

the (first) EP is reached. The display shows then

drift OK 2.3 ul/min

SET pH conditioning

The vessel is now conditioned. The titration can be started with <START>.

The sample identifications and the sample size are requested.

The temperature is measured if a T sensor is connected. Pause 1 is waited off, the start volume is dispensed and

pause 2 waited off. The titration to EP1 then to EP2 is executed. If the extrac-

tion time is not yet over when EP1 has been reached, the titration will only be terminated after the extraction time is over.

The stirrer is switched off when there is no conditioning. Calculations are carried out. Data are outputted. Conditioning is carried out.

785 DMP Titrino

2.6. Parameters, key <PARAM>

U/mV

V/ml

U/mV

V/ml

Control parameters

The control parameters can be set separately for each end point. Optimize your control parameters for routine analyses for samples with a rather low content.

During the titration, reagent dosing occurs in 3 phases:

U/mV

1. Initial dosing: Here the dosing rate increases constantly. The rate starts with "min.rate" and goes up to "max.rate".

2. Continuous dosing:

V/ml

t/s

Dosing is performed at the maximum rate "max.rate" until the control range (dynamics) is reached.

3. Control range (dynamics): In this range, dosing is performed in single steps. The last dosing steps are controlled by the parameter "min.rate".

Initial

dosing

Continuous

dosing

V/ml

Control

range

Trial settings for the size of the control range Set a large control range for steep curves. Relatively flat curves, on the other hand, need

a smaller control range. You can get an initial, good approximation for the start of the control range from the intersection point of the tangents:

Control range

"steep curves" "flat curves"

Control range

785 DMP Titrino

2.6 Parameters, key <PARAM>

Relation between the stop criteria "time" and "drift" The stop criterion "time", t(delay), means that the end point must be exceeded for a certain period of time. In other words, after the last dosed increment, time t is allowed to elapse before the titration is stopped. The size of this last increment depends on the volume of the Exchange Unit used. With a 20 mL Exchange Unit, the smallest possible increment is 2 ul. With a t(delay) = 5 s, the last 2 ul reagent must thus suffice for 5 s or longer. This results in a drift of ≤ 2 uL/5 s = 24 uL/min (the drift can be less than 24 uL/min as it is not known whether the last increment would also suffice for 10 s). If you have been working up to this point with a 20 mL Exchange Unit and a t(delay) = 5 s, you can set a value of ≤ 24 uL/min as stop drift. The following table shows several values for the maximum stop drift.

t(delay)

5 s 10 s 20 s

min.incr. (Exchange Unit)

0.5 uL (5 ml) 6 uL/min 3 uL/min 1.5 uL/min 1 uL (10 ml) 12 uL/min 6 uL/min 3 uL/min 2 uL (20 ml) 24 uL/min 12 uL/min 6 uL/min 5 uL (50 ml) 60 uL/min 30 uL/min 15 uL/min

Same t(delay) with a range of extremely small volume increments means different switchoff points. In case the stop criterion "drift" is used, the stopping point remains the same.

785 DMP Titrino

2.6. Parameters, key <PARAM>

If you have entered the endpoint and the control range (dynamics), the default values for the other control parameters should suffice for the first titration. If you encounter difficulties in optimizing your titration, the following table will be of use.

How to proceed if ...

Problem Possible causes and corrective measures

Dosing at the end too long and with too small increments. "Never ends!"

• Increase "min.rate". Perform an experiment with a much higher min.rate.

• Change switch-off criterion. Attempt, e.g. to increase the stop drift or use a shorter t(delay) as stop criterion.

• Possibly pass an inert gas through the titration vessel.

"Overshoots". Titration is not controlled, i.e. at the end single pulses are not dosed.

• Lower "max.rate".

• Set larger control range.

• Set "min.rate" much lower.

• Optimize arrangement of electrode and buret tip and

improve stirring, see page 160. This is particularly important with very fast titration reactions and with steep curves.

Titration time is too long. • Set higher "min.rate".

• Set higher "max.rate".

• Lower "dynamics".

Scatter in titration results is too great.

• Set "min.rate" lower.

785 DMP Titrino

2.6.3 Parameters for MEAS

2.6 Parameters, key <PARAM>

parameters >measuring parameters >statistics >preselections

>measuring parameters

signal drift OFF mV/min

equilibr.time OFF s

measuring parameters

determine the measurement. statistics: Calculation of mean values and standard deviation, see page 41. preselections: ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.

Measuring parameters

Drift criterion for measured value acquisition (input range depends on the measured quantity: pH, U, Ipol: 0.5...999 mV/min, OFF Upol: 0.05...99.9 uA/min, OFF T: 0.5...999 °C/min, OFF)

<CLEAR> sets "OFF". "OFF" means that the measured value is acquired after a fixed equilibration time.

Waiting time for measured value acquisition (0...9999 s, OFF)

<CLEAR> sets "OFF". If no new equilibration time has been entered, the Titrino calculates an equilibration time appropriate to the drift with the formula

150

equilibr.time (in s) = ДДДДДДДДД + 5

ûDrift + 0.01 The measured value is acquired when the first criterion (drift or time) is met. With drift and time "OFF", you will have an "infinite" measurement.

meas.input: 1

I(pol) 1 uA

U(pol) 400 mV

electrode test: OFF

785 DMP Titrino

Measuring input for pH and U. (1, 2, diff.)

Inquiry only with measured quantities pH and U. Measuring input 1 or 2 or differential amplifier; connection of electrodes, see page 158.

With polarized electrodes, instead of the measuring input the

polarization current (-127...127 uA)

or the

polarization potential (-1270...1270 mV, in steps of 10 mV)

is inquired.

Electrode test (OFF, ON)

Test for polarized electrodes. Performed on changeover from the inactive standby mode to a measurement. "OFF" means that the test is not performed.

2.6. Parameters, key <PARAM>

temperature 25.0 °C

time interval 2 s

>preselections

req.ident: OFF

req.smpl size: OFF

limit smpl size: OFF

low lim. 0.0 up lim. 999999

Temperature (-170.0...500.0 °C)

Temperature is measured at the start if a T sensor is connected. This parameter is used for temperature compensation in pH measurements.

Time interval (1...999 999 s)

Time interval for acquisition of measured values.

Preselections for the sequence

Request of sample identifications after start of titration (id1, id1&2, all, OFF)

After start, sample identifications can be inquired automatically: Only id1, id1 & id2, all three id's or no inquiries.

Request of sample size after start of titration (value, unit, all, OFF)

Limiting value check for sample size (ON, OFF)

Lower limit for sample size (0.0...999 999) Upper limit for sample size (0.0...999 999)

activate pulse: OFF

Pulse output on line "activate" (L6, pin 1) of the remote socket (ON, OFF)

see page 166.

785 DMP Titrino

2.6.4 Parameters for CAL

The calibration interval may be monitored, see page 7.

2.6 Parameters, key <PARAM>

parameters >calibration parameters >statistics

>calibration parameters

meas.input: 1

cal.temp. 25.0 °C

buffer #1 pH 7.00

buffer #2 pH 4.00

buffer #3 pH OFF

calibration parameters

determine the calibration procedure. statistics: Calculation of mean values and standard deviation, see page 41.

Calibration parameters

Measuring input (1, 2, diff.)

Measuring input 1 or 2 or differential amplifier; Connection of electrodes, see page 158.

Calibration temperature (-20.0 ... 120.0 °C)

If a T sensor is connected, the temperature will be measured. The calibration temperature can also be input during the calibration sequence.

pH value of first buffer (0...±20.00)

The pH value of the buffers can be put in during the calibration sequence.

pH value of second and the following buffers (0...±20.00, OFF)

<CLEAR> sets "OFF". Buffers are requested until "OFF" is set. This gives an n-point calibration. Up to 9 buffers. A regression line will be calculated in calibrations with more than 2 buffers.

signal drift 2 mV/min

equilibr.time 110 s

electr.id

sample changer cal: OFF

785 DMP Titrino

Drift for measured value acquisition (0.5...999 mV/min, OFF)

<CLEAR> sets "OFF". "OFF" means that the measured value is acquired after an equilibration time.

Equilibration time (0...9999 s, OFF)

<CLEAR> sets "OFF". If a new equilibration time has not been entered, the Titrino calculates an equilibration time appropriate to the drift, see page 33. The measured value is acquired as soon as the first criterion (drift or time) has been met. If drift and time are both set to "OFF", the measured value acquisition is immediate.

Electrode identification (up to 8 characters).

Calibration with sample changer (ON, OFF)

In calibrations with a sample changer, there are no

2.6. Parameters, key <PARAM>

<START>

(Start delay)

Buffer 1 pH

etc.

Measuring buffer 1

Measuring buffer 2

Data output

(Activate pulse)

hold points in the calibration sequence for inputs. Calibration temperature and pH values of the buffers (which are temperature dependent) must therefore be entered in advance. The inputs in key <PARAM> are valid.

activate pulse: OFF

Calibration sequence

Measuring cal.temp.

entry

Pulse output on the line "activate" (L6, pin 1) of the remote socket (all, first, OFF)

See page 167.

After the start, the activate pulse is output. The start delay time is waited off. Then, the calibration temperature is measured.

It no T sensor is connected, you enter the temperature manually. Store the value with <ENTER> or continue with <START> (T is not stored).

Enter the nominal value of the first buffer. Store the value with <ENTER> or continue with <START> (the value is not stored).

The first buffer is measured. Enter the nominal value of the second buffer.

Store the value with <ENTER> or continue with <START> (the value is not stored). Leave the calibration with <STOP> ⇒ 1 point calibration.

The second buffer is measured. As many buffers appear as have been specified in the

<PARAM> key (up to 9). You may leave the calibration any time with <STOP>.

Data are output. The calibration data are available for calculation: C46: pHas C47: Electrode slope Calibration data can be viewed at any time with the <CAL.DATA> key and the calibration report printed out using the key sequence <PRINT><CAL.DATA><ENTER>.

785 DMP Titrino

2.6 Parameters, key <PARAM>

2.6.5 Parameters for TIP

In TIP, several commands and methods can be linked to make a titration procedure. The TIP sequence can be defined with <DEF>, see page 49.

parameters >sequence >statistics >preselections

>preselections

req.ident.: OFF

req.smpl size: OFF

limit smpl size: OFF

low lim. 0.0 up lim. 999999

sequence

Parameters for the TIP sequence see page 50. statistics: Calculation of mean values and standard deviation, see page 41. preselections: ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.

Preselections for the sequence

Request of sample identifications after start (id1, id1&2, all, OFF)

After start, sample identifications can be inquired automatically: Only id1, id1 & id2, all three id's or no inquiries.

Request of sample size after the start (value, unit, all, OFF)

Limiting value check for sample size (ON, OFF)

Lower limit for sample size (0.0...999 999) Upper limit for sample size (0.0...999 999)

meas.mode: OFF

meas.input: 1

I(pol) 1 uA U(pol) 400 mV

electrode test: OFF

temperature 25.0 °C

785 DMP Titrino

Measured quantity (pH, U, Ipol, Upol, T, OFF)

Quantity for measurements with key <MEAS/HOLD>.

Measuring input (1, 2, diff.)

Inquiry only with measured quantities pH and U. Measuring input 1 or 2 or differential amplifier; connection of electrodes, see page 158.

With polarized electrodes, inquiry of

polarization current (-127...127 uA) or

polarization potential (-1270...1270 mV, steps of 10 mV) Electrode test (OFF, ON)

Test for polarized electrodes. Performed on changeover from the inactive standby state to a measurement. "OFF" means that the test is not performed.

Temperature (-170.0...500.0 °C)

Temperature for pH compensation. Its value has to be entered manually even if a T sensor is connected.

2.7. Result calculations

2.7 Result calculations

Formula entry, key <DEF>

DEF

(

def >formula >silo calculations >common variables >report >mean >temporary variables

>formula

RS?

RS1=

RS1=EP1*C01/C00

Key <DEF> contains various inquiries for result calculations and data output. The data of this key are method specific and they are stored in the method memory together with the method.

formula: Formulas for result calculations.

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

Input of formulas

Enter formula number (1...9)

You can calculate up to 9 results per method. Enter a number 1...9.

Input of formula

Example: RS1=EP1*C01/C00 Enter formula by means of 3rd functions of keyboard. Here you will find operands, mathematical operations and parentheses. Operands require a number as an identification. You can use the following operands: EPX: EP's. X = 1...9 RSX: Results which have already been calculated with

previous formulas. X = 1...9.

CXX: Calculation constants. XX = 00...79.

Rules:

• Calculation operations are performed in the algebraic hierarchy: * and / before + and -.

• Store formula with <ENTER>.

• Calculation quantities and operands can be deleted

with <CLEAR> one by one.

• To delete a complete formula press <CLEAR> repeatedly until only RSX remains in the display. Confirm with <ENTER>.

If a formula is stored with <ENTER>, result text, number of decimals and result unit will be requested:

785 DMP Titrino

2.7 Result calculations

RS1 text RS1

Text for result output (up to 8 characters)

Text input see page 6.

RS1 decimal places 2

RS2 unit: %

Number of decimal places for result (0...5)

Selection of result unit (%, ppm, g/l, mg/ml, mol/l, mmol/l, g, mg, ml, mg/pc, s, ml/min, no unit or up to 6 characters).

RS1 limit control: OFF

Limit control for the result (on, off)

The limits are checked each time a result is calculated. If "on" has been set:

RS1 low lim. 0.0

RS1 up lim. 0.0

RS1 L13 output: OFF

Lower limit (0.0...999 999) Upper limit (0.0...999 999)

Sets line L13 of the remote socket (OFF, active, pulse)

if the result lies outside the limits. Enter next formula, e.g. for RS2.

Meaning of the calculation variables CXX:

C00 Sample size, see page 59. C01...C19 Method specific operands, see page 40. They are stored with the

method in the method memory. C21...C23 Sample specific operands, see page 59ff. C26, 27 Mean values from silo calculations. C30...C39 Common variables. C40 Initial measured value of the sample, last measured value in MEAS. C41 End volume. C42 Determination time. C43 Volume drift for SET with conditioning. C44 Temperature. C45 Dispensed start volume. C46 Asymmetry-pH (calibration). C47 Electrode slope (calibration). C48 Volume value at maximum voltage in the curve (no evaluation in CAL and

TIP). C49 Volume value at minimum voltage in the curve (no evaluation in CAL and

TIP). C51...C59 Fix EP for DET and MET. C61...C69 pK/HNP values for DET and MET. C70...C79 Temporary variables for calculations in TIP.

785 DMP Titrino

2.7. Result calculations

C-FMLA

Input method specific operands C01...C19, key <C-FMLA>

With <C-FMLA> the operands C01...C19 can be put in. For the calculation, the operands are used, which were introduced in the formula.

The inputs method specific and are store in method memory.

The calculation report can be printed with the key sequence

<PRINT><←/→> (press keys repeatedly until "calc" appears in the display) <ENTER>

785 DMP Titrino

2.8 Statistics calculation

DEF

2.8 Statistics calculation

Mean values, absolute and relative standard deviations are calculated.

(

def >formula >silo calculations >common variables >report >mean >temporary variables

>mean

MN1=RS1

MN2=

MN9=

PARAM

The <DEF> key is used to allocate results for statistics calculation. The entries are specific to the method and are stored in the method memory.

mean: Assigns values for statistics calculations.

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

Allocations for statistics calculations

Number n of single values for statistics calculation. (1...9)

You can perform statistics calculation using up to 9 results (RSX), endpoints (EPX) or variables (CXX). For MN1, the default value RS1 is entered. Delete allocation with <CLEAR> + <ENTER>

Each mode has an inquiry group ">statistics" in key <PARAM>

>statistics

status: OFF

mean n= 2

res.tab: original

delete n= 1

785 DMP Titrino

Statistics calculation

Status of statistics calculation (OFF, ON)

If the statistics calculation is switched off, the following inquiries regarding the statistics do not appear.

Mean value calculation from n single results (2...20)

Result table (original, delete n, delete all)

"original": The original table is used. Deleted

individual results are again incorporated in

the evaluation. "delete n": Deletion of single results with the index n. "delete all": The entire table is deleted.

Delete data from sample number n (1...20)

The deleted result is removed from the statistics calculation.

2.8. Statistics calculation

How do you obtain statistics calculations?

1) Enter the allocations for the statistics calculation, see page 41.

2) Switch on the statistics calculations: Either with <STATISTICS> or set the status under <PARAM>, "> statistics" to "ON". The "STATISTICS" LED is on. Storing a method in the method memory, the status of the statistics calculation is retained.

3) Change the number of the individual values n under "mean n", if necessary.

4) Perform at least 2 titrations. The statistics calculation are constantly updated and printed. The values are printed in the short and full result report.

5) The statistics report can be printed with <PRINT><STATISTICS><ENTER>.

Rules:

• Recalculated results are incorporated in the statistics calculation.

• If a result of a particular titration can not be calculated, no results for this determination

are incorporated in the statistics calculation. However, the sample counter is still operative, i.e. the statistics calculation start afresh when the number of required individual determinations has been performed.

• If the statistics are switched off ("statistics" LED no longer on), results are no longer entered in the statistics table. But the table remains unchanged. When the statistics are switched on again, you can immediately continue working.

• If you delete results, all results of the determination with index n are removed from the statistics evaluation.

• On method change, the old statistics table is cleared and the statistics instructions of the new method followed.

• Old results in the statistics table can be deleted with "delete all" (<PARAM>, ">statistics", "res.tab:").

785 DMP Titrino

2.9 Common variables

Common variables are used for:

• Determination of a titer with a method. This titer is stored permanently as C3X. The operand C3X can be used in various other methods like any other operand.

• Determination of a blank values with a method . Using this blank value in various other methods.

• Determination of a result with method. Reconciliation of this result in various other methods.

You may view the values of the common variables with <CONFIG>.

DEF

(

def >formula >silo calculations >common variables >report >mean >temporary variables

>common variables

C30=

C31

C39=

With <DEF>, results (RSX), endpoints (EPX), variables (CXX) or mean values (MNX) can be allocated as common variables. The entries are specific to the method and are stored in the method memory.

common variables: Assigns values as common variables.

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

Allocation for common variables

Common variable C30...C39 (RSX, EPX, CXX, MNX)

Results (RSX), endpoints (EPX), variables (CXX), and means (MNX) can be assigned. The values of the common variables remain in force for all methods until they are overwritten or deleted. They can be viewed under the <CONFIG> key. Delete allocation with <CLEAR>+<ENTER>.

785 DMP Titrino

2.10. Data output

DEF

2.10 Data output

2.10.1 Reports for the output at the end of a determination

(

def >formula >silo calculations >common variables >report >mean >temporary variables

>report

report COM1:

With <DEF>, the report sequence at the end of the determination is defined. The entries are specific to the method and are stored in the method memory.

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.

Report sequence for COM1 (input range depends on the mode: DET: full, short, mplist, curve, derive, comb, scalc full,

scalc srt, param, calc, calib, ff

MET, SET, MEAS:

full, short, mplist, curve, scalc full, scalc srt, param, calc, calib, ff

CAL: full, short, scalc full, scalc srt, param, calc, calib,

TIP: full, short, scalc full, scalc srt, param, calc, ff

Select a block. If you require more than one report block, set a ";" as a delimiter between the blocks.

report COM1:full;curve

Identical for COM2.

Meaning of the report blocks:

full Full result report with raw results, calculations and statistics. short Short result report with calculations and statistics. mplist Measuring point list. curve Titration curve (with DET and MET) or volume vs. time (with SET) or

measured value vs. time (with MEAS) derive 1st derivative of the titration curve (with DET) comb Combined titration curve and 1st derivative (with DET) scalc full Full report of silo calculations. scalc srt Short report of silo calculations. param Parameter report. calc Report with formulas and operands. calib Calibration data. ff Form feed on printer.

Original reports which are put out automatically at the end of the titration can be printed with recalculated values at any time. Key sequence:

<PRINT><REPORTS><ENTER>.

785 DMP Titrino

2.10 Data output

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

Report outputs can be stopped with <QUIT>. Example of reports:

Full result report

'fr

785 DMP Titrino 0P1/101 785.0010

date 1999-06-27 time 08:54 14

card label: Appl.785

pH(init) 2.88 DET pH ********

smpl size 0.372 g

EP1 2.083 ml 7.64

RS1 3.80 g/l

device label Titr 1 sign:

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

'cu

785 DMP Titrino 0P1/101 785.0010

date 1999-06-27 time 08:54 14

start V 0.000 ml DET pH ********

1.0 ml/div dpH=1.0/div

Card label if a card was inserted, see page

56.

Device label (if there is a designation, see page 10) and manual signature

Titration curve

Scaling of volume and pH axis

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

785 DMP Titrino

2.10. Data output

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:

1) <PRINT><←/→><ENTER> Cursor is pressed repeatedly until the desired report

appears in the display.

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

are entered.

List of the "keys X":

Report <Key X>

Configuration report CONFIG Parameter report PARAM Current sample data SMPL DATA Statistics report with the individual results STATISTICS All sample data from the silo memory SILO Calibration data CAL.DATA Content of the current card directory CARD Operands C01...C19 C-FMLA Contents of the <DEF> key DEF Contents of the method memory with details of the memory

USER METH

requirements of the individual methods and the remaining bytes Complete report sequence of the last determination, as defined

REPORTS

under the <DEF> key in the method

Result display without printer

If you work without printer, we recommend to work with the standard character set for result display (settings in key <CONFIG>, ">auxiliaries", see page 10). You will get the complete information on your determinations: Calculated results, endpoints, messages etc.

785 DMP Titrino

2.10.2 Display of the titration curve

After the titration, the curve can be viewed. Switch between "curve" and "result display" with key <CURVE>.

You can trace the curve with keys <↑> and <↓>. In the text field to the left of the curve the index of the current measured value is displayed in the first line. In the subsequent lines, the corresponding measured values are shown.

If you place the cursor in DET and MET curves onto the EP, the data of this EP are also shown.

• The EP number and its ERC (Endpoint Recognition Criterion).

• The EP volume.

2.10 Data output

785 DMP Titrino

2.11. User name, key <USER>

USER

2.11 User name, key <USER>

←

user name: Boss >delete

The key <USER> manages the user names. User names can be entered directly or selected with the keys <←> and <→>.

Name: Selection or input of user name. Delete: Delete user name.

The display texts of the Titrino are shown below at the left.

name: User name (up to 10 ASCII characters)

User names can be entered directly or selected with the keys <←> and <→>. The operator name is printed out in the report. The operator name remains in the instrument until it is deleted (or until the RAM is initialized). If no operator name is to be printed out the operator "blank" can be selected.

>delete

name:

Delete user name

Enter the name directly or select it with the keys <←> and <→>. <ENTER> will delete the name from the list of user names.

785 DMP Titrino

2.12 TIP, Titration procedure

TIP (Titration Procedure) is used to link several commands in a sequence. TIP is selected with <MODE> and <ENTER>. TIP is an "empty shell" in which the sequence of the determination must be defined.

Definition of the sequence

DEF

(

def >sequence >formula >silo calculations >common variables >report >mean

>sequence

1.step: OFF

<ENTER>

1.method: 5-TIP

<ENTER>

etc.

2 x <QUIT>

With key <DEF> the TIP can be defined. sequence:

of TIP. The display texts of the Titrino are shown to the left.

The values are the default values.

Sequence

Select a step with keys <←> and <→>: method: Method from the user memory or from

the card. pause: Waiting time L4, L6 output: Set an output. info: Hold sequence and write a message

into the display. stirrer ON/OFF

Confirm the step with <ENTER> and enter the parameter for the selected step, see below. The request for the second step follows etc. Up to 30 steps can be selected. On completion of the sequence definition, exit the inquiry with <QUIT>.

785 DMP Titrino

2.12. TIP, Titration procedure

Information for the commands (steps):

Command Meaning Input range

method Method from the user memory or from the card. This

method runs as a submethod.

pause Waiting time. The waiting time can be aborted with

<QUIT>. <CLEAR> sets "inf" (= infinitely long pause time).

L4, L6 output Set L4 output (pin 3) resp. L6 output (pin 1) of the

remote socket. active = 0 V, inactive = 5 V, pulse > 100 ms, off = output is not used. Cable Titrino (L6) - Dosimat: 6.2139.000.

Important: A pulse (e.g. a pulse from monitoring or an activate pulse in a submethod) can set an active output to inactive! At the end of the TIP method, the outputs are set to "inactive".

info Message in the display .

The TIP sequence is held and the message displayed. Continue the sequence with <START>, <QUIT> or <ENTER>.

stirrer Switching stirrer ON/OFF.

In TIP the stirrer is not switched automatically in the submethods. At the end of TIP the stirrer is switched off (if stirrer control is ON).

Name

0...999 999 s, inf.

active, inactive, pulse, off

up to 16 characters

ON, OFF

The parameters of the sequence can be viewed and changed at any time under the <PARAM> key.

785 DMP Titrino

2.12 TIP, Titration procedure

<START>

(Start delay)

Switching ON stirrer

Set output

TIP calculations

Pause

Info

C7X

TIP data output

Sequence of TIP

As there is no preset sequence of TIP, in what follows the procedure is illustrated by a sequence that contains all available commands.

The start delay time is waited off.

(Request ident.)

(Request smpl size)

Submethod

Calculations

Data output

The sample identifications and the sample size are requested.

Stirrer is switched on. The stirrer is not operated automatically in submethods of TIP. At the end of TIP, however, the stirrer is switched off (with stirrer control ON).

Submethods are processed according to their parameters. They run to completion, including calculations and data output (e.g. curves). The determination data of submethods are overwritten in the next sequence step of TIP. Those values which are needed for higher-level calculations must therefore be assigned to temporary variables C7X.

The pause is waited off. Outputs on the socket "Remote" can be set. A message can be written in the display. The se-

quence is held until it is continued manually (with <START>, <QUIT> or <ENTER>).

785 DMP Titrino

TIP higher-level calculations are carried out. Data output in TIP (TIP contains no more deter-

mination data, i.e. curves must be put out within the submethods).

2.12. TIP, Titration procedure

DEF

Preparation of submethods for use in TIP

All titration data, i.e. curves and lists of measured points must be put out in the submethod as they are overwritten on return to TIP. Individual values from the submethod, e.g. endpoints or calculated results must be stored as temporary variables C7X. This allows them to be used in TIP for further calculations. Reevaluations of data of a submethod are not possible in TIP. The submethods should thus be thoroughly wet tested before they are used in TIP.

Assignment of temporary variables in the submethod:

(

def >formula >silo calculations >common variables >report >mean >temporary variables

>temporary variables

C70=

C71=

C79=

Calculations in TIP

With key <DEF> temporary variables can be assigned. The entries are specific to the method and are stored in the method memory.

temporary variables

for higher-level calculations. The display texts of the Titrino are shown to the left.

The values are the default values.

Temporary variables

Assignment of result, endpoints or variables (RSX, EPX, CXX)

Values of the submethod to be used in TIP calculations.

In TIP calculations variables C7X from different submethods can be used, formula entry see page 38.

Note: We recommend to execute the calculations in TIP, as they can only be recalculated "dryly" in TIP itself, e.g. with a different sample size.

785 DMP Titrino

2.13 Method memory, keys <USER METH> and <CARD>

USER METH

2.13 Method memory, keys <USER METH> and <CARD>

2.13.1 Key <USER METH>

user methods >recall method >store method >delete method

>recall method

method name:

)

Management of the internal method memory with key <USER METH>. Select method name with keys <←> and <→>.

recall method: Loads a method from the internal method memory into the working memory. store method: Stores the method which is in the working memory in the internal method memory. delete method: Deletes a method from the internal method memory.

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

Recall method

Recall method from the internal method memory to the working memory (input of method name, which is included in the memory).

If a method identification is entered which is not found in the method memory, the selected value blinks.

>store method

method name:

>delete method

method name:

785 DMP Titrino

Store method

Store method from the working memory to the internal method memory (up to 8 ASCII characters).

If a method with an identical name is already stored, you are requested if you wish to overwrite the old method. With <ENTER> it is overwritten, with <QUIT> you return to the entry.

Delete method

Delete method from the internal method memory (input of method name, which is included in the memory).

For safety, you are again asked if you really wish to delete the method. With <ENTER> it is deleted, with <QUIT> you return to the working memory. If a method name is entered which is not found in the method memory, the selected value blinks.

2.13. Method memory, keys <USER METH> and <CARD>

The contents of the method memory can be printed with the key sequence

Document your methods (e.g. parameter report, def. report and C-fmla report)! With a PC and the 6.6008.XXX Vesuv program, you should carry out a complete method backup from time to time. Making the backup on the card, pay attention of the exchange date of the battery!

785 DMP Titrino

2.13.2 Key <CARD>

CARD

2.13 Method memory, keys <USER METH> and <CARD>

user meth. >recall method >store method >delete method >change directory >create directory >delete directory

>backup ↓

Management of the method memory on the card with key <CARD >. Select names with keys <←> and <→>.

On the first line you find the name of the current directory (here user meth.).

recall method: Loads a method from the current directory of the card into the working memory. store method: Stores the method, which is in the working memory, in the current directory of the card. delete method: Deletes a method from the current directory of the card. change directory: Changes the current directory of the card. create directory: Creates a new directory on the card. delete directory: Deletes a directory on the card. backup: Backup of the internal method memory on the card. reload: Reloads a backup from the card into the internal method memory. format: Formats the card. change battery: Date for changing the battery.

>recall method

>store method

>delete method

>change directory

>create directory

>delete directory

dir.name:

785 DMP Titrino

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

Recall, store, delete method

Identical with the corresponding function of the internal method memory. The functions operate on the current directory of the card.

Change, create, delete directory

If a directory is deleted, it is deleted together with all its methods.

(directory name with up to 10 characters)

2.13. Method memory, keys <USER METH> and <CARD>

>backup

dir.name:

>reload

dir.name:

>format

card label

Backup of the internal method memory on the card

(directory name with up to 10 characters)

Existing methods in this directory will be deleted, and all methods from the internal method memory are stored in the directory.

Reload methods from the card to the internal method memory

(directory name with up to 10 characters)

Primary all methods from the internal method memory are deleted. Afterwards all methods from the directory of the card are copied into the internal method memory.

Format the card

Card label (with up to 8 characters)

The card label will be printed in the card report and in the full result report (if the card is inserted, see page

45).

format: no

Confirmation of formatting the card (yes, no)

Upon formatting the card, all data on the card are deleted. After formatting a new card, the date for battery change must be entered.

>change battery

date

Battery change date

Date for changing the battery (YYYY-MM-DD)

see page 57.

Possibilities of the card

Methods can be stored on the card.

• Simple exchange of methods between different users, laboratories, factories. Every user can use his card with his own methods. The user specific card label will be printed in the full result report, if the card remains inserted.

• Methods can be stored in different directories, e.g. in directories depending on the sample type or the user.

• The card can be used as an extended memory.

• You will find many application methods on the application card 6.6036.000.

785 DMP Titrino

2.13 Method memory, keys <USER METH> and <CARD>

Internal method memory and methods on the card

If methods are called from TIP or from the silo memory, the Titrino will search these methods primary in the internal method memory, and afterwards in the current directory of the card. Important: We do not recommend not to store identical methods in the current directory of the card as well as in the internal method memory at the same time. Otherwise, you have to update both methods!

Card battery

The card is supplied by a battery. This battery must be changed periodically. Note the lifetime of the battery which is indicated in the manual of the card. If the card is inserted in the Titrino you will receive a warning if the battery is low on switching on the Titrino or if the battery change date is expired. The battery is in a case of the card. Read the note enclosed with the card before changing the battery. Leave the card in the Titrino when you change the battery to ensure sufficient power supply. Important: The battery lifetime refers to a storing temperature of 25 °C. With higher temperatures, the lifetime is shorter. Therefore do not

• carry the card on the body

• store the card near radiators

• have the card in the sun.

Write protection

The write protection prevents all functions, which write on the card (store methods, delete methods, change directory - the current directory is written on the card, create directory, delete directory, backup, format the card, change date of the card battery). Reading functions are possible. Write protection is on, if the lash in front of the card is on the right.

Reports

• Methods of the current directory, key sequence <PRINT><CARD><ENTER>.

• Methods of the whole card: key sequence <PRINT><←/→><ENTER>; press the

cursor keys repeatedly until "card" appears in the display.

Ordering designations

Memory card with 128 Kbytes memory space............................................ 6.2245.010

Application card with application file...........................................................6.6036.000

785 DMP Titrino

2.14. Calibration data, key <CAL.DATA>

CAL.DATA

2.14 Calibration data, key <CAL.DATA>

cal.data >input 1 >input 2 >input diff.

>input 1

pH(as) 7.00

slope 1.000

temp 25.0 °C

With <CAL.DATA>, the current pH calibration data of all measuring inputs can be seen. Calibration data are entered here automatically on completion of a calibration.

input 1: Calibration data for measuring input 1. Identical for input 2 and diff.

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

pH calibration data for measuring input 1

Asymmetry pH (0...±20.00)

Entered automatically after a calibration with measuring input 1.

Slope (0...±9.999)

Entered automatically after a calibration with measuring input 1.

Calibration temperature (-20.0...120.0 °C)

Will be printed automatically after calibration with measuring input 1.

cal.date

Date of last calibration (no entry possible)

If the calibration data "pH(as)" and/or "slope" are changed by a manual entry, the date entry is deleted. This date is the reference date for calibration monitoring, see page 7.

electr.id

Electrode identification of calibrated electrodes (no entry possible)

If an electrode identification has been entered in the CAL mode, it is automatically entered after the calibration.

The calibration report with the current measuring input data can be printed at any time with the key sequence

<PRINT><CAL.DATA><ENTER>.

785 DMP Titrino

2.15 Current sample data, key <SMPL DATA>

SMPL

2.15 Current sample data, key <SMPL DATA>

The key <SMPL DATA> can be used to enter the

DATA

smpl data

id#1 or C21 id#2 or C22 id#3 or C23

smpl size 1.0 g smpl unit: g

current sample data. The contents of this key change when the silo memory is switched on, see page 61. Instead of entering the current sample data with <SMPL DATA>, you can request these data automatically after start of determinations. Configuration: <PARAM>, ">preselections". Current sample data can be entered live. For working with the silo memory see page 60.

id#1...3 or C21...C23, sample identifications: The sample identifications can also be used as sample specific calculation variables C21...C23. smpl size: Sample size. The sample size can be monitored, see e.g. page 18. The limits are then displayed in this window. smpl unit: Unit of the sample size.

smpl data

id#1 or C21 id#2 or C22 id#3 or C23

smpl size 1.0 g

smpl unit: g

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

Sample data

Sample identification 1...3 or sample specific operand C21...C23 (up to 8 characters).

Sample identifications or sample specific operands can be entered using the keypad, via a balance with a special input device or via barcode reader.

Sample size (6-digit number: ±X.XXXXX)

Entry using keypad, via balance or via barcode reader.

Unit of sample size (g, mg, ml, ul, pc, no unit or up to 5 characters)

Select unit with <←/→>.

785 DMP Titrino

2.16. Silo memory for sample data

2.16 Silo memory for sample data

In the silo memory or pushup storage, sample data (method, identifications and smpl size) can be stored. This is useful, e.g. when you work with Sample Changers and other automatic sample addition systems or if you wish an overview of your determination results, see page 64.

SILO

Press the key <SILO> for working with the silo memory. The status LED "silo" is on when the silo memory is switched on. The silo memory works by the FIFO principle (First In, First Out).

If the silo memory is switched on, sample data are routed to the last free line of the silo memory. If no new value is put in, the value from the last line is automatically copied. In this manner, data can be simply taken over when they remain unchanged. When the instrument is started, the sample data are fetched from the next silo line.

Organization of the silo memory

255

Silo memory contains 35 lines. Next free line is 36

6 of the 35 lines have been processed. Free lines from 36 to 255 and from 1 to 6.

1 silo line needs between 18 and 120 bytes memory capacity.

Filling the silo memory with a connected balance

If the silo memory is filled from the balance, you must ensure that there is sufficient space in the silo memory for the required number of silo lines! The number of free bytes is given in the user memory report.

When the sample data are entered from a balance, the transfer of the sample size is taken as the end of the silo line. You should not send data from the balance and edit the silo memory at the same time. For mixed operation, manual input of identifications and sample sizes from a balance, the values from the balance are sent into the line in which editing just takes place. Confirmed the data with <ENTER> at the Titrino.

785 DMP Titrino

2.16 Silo memory for sample data

SMPL

Key <SMPL DATA> with the silo memory switched on

Sample data can be entered into the silo memory with key <SMPL DATA>.

DATA

edit silo lines:

smpl data >edit silo lines >delete silo lines >delete all silo lines cycle lines: OFF save lines: OFF

Entering sample data into the silo memory. delete silo lines: Deletes single silo lines. delete all silo lines: Deletes the whole silo memory.

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

>edit silo lines

silo line 1

method:

id#1 or C21 id#2 or C22 id#3 or C23

smpl size 1.0 g

smpl unit: g

Input for silo memory

Silo line (1...255)

The next free line is displayed automatically. Lines already occupied can be corrected.

Method with which the sample is processed (method name from the method memory)

If no method name has been entered, the sample is processed with the method in the working memory. Selection of the method with <←/→>.

Sample identification 1..3 or sample specific calculation variables C21...C23 (up to 8 characters)

Sample size (6-digit number: ±X.XXXXX)

The method specific limits are tested on result calculation.

Unit of sample size (g, mg, ml, ul, pc, no unit or up to 5 characters)

Select unit with <←/→>.

>delete silo lines

delete line n OFF

785 DMP Titrino

Delete individual silo lines

Line number of the line to be deleted(1...255, OFF)

<CLEAR> sets "OFF". Deleted lines remain in the silo memory. Access is blocked during the processing. To show that a line has been deleted, they are marked with "*". The symbol * indicates that the line has been deleted. Deleted lines can be reactivated if the appropriate line is re-edited.

2.16. Silo memory for sample data

>delete all silo lines

delete all: no

cycle lines: OFF

save lines: OFF

Delete all silo lines

Confirmation (yes, no)

When all silo lines are deleted, the silo is completely empty: The line numbering starts again with 1.

With "ON", worked off silo lines will be copied to the highest line of the silo memory (ON, OFF)

Data cycling "on" is useful if you constantly have to process the same sample data. In such a case, the processed silo line is not deleted, but copied to the next free line, see below. If you work in this mode, you should not enter any new silo lines during the determinations.

Store results in the silo memory (ON, OFF)

Determination results will be stored as C24 or C25 in the silo memory according to the allocations in the methods, see page 64. "save lines" can only be set to "OFF" if the silo is completely empty.

Silo memory with data cycling "on"

255

Silo memory contains 35 lines. Next free line is 36.

255

6 of 35 lines have been processed. The processed lines have been copied to the end of the silo memory: your silo is filled up to line

41.

785 DMP Titrino

2.17 Storing determination results and silo calculations

DEF

2.17 Storing determination results and silo calculations

2.17.1 Storing determination results

If the sample-specific data of the silo memory should be kept after the determination and supplemented by results, the following entries are necessary:

1. In the method under <DEF> Assignment of the determination results to C24 and/or C25:

2. In the silo memory, <SMPL DATA> (when the silo memory is switched in): "save lines: on"

Assignment of determination results

(

The determination results are assigned in key <DEF>.

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

def >formula >silo calculations >common variables >report >mean >temporary variables

>silo calculations

C24=

C25=

Important: Ensure that there is still sufficient space for storing the results C24 and C25. (In the report <PRINT><USER METH><ENTER> the number of free bytes is shown.) Result name, value and unit are stored. The memory requirements can be estimated as follows: Result with text (8 characters) and unit (5 characters): 32 bytes Measured value C40, value without unit: 22 bytes

The values are the default values.

Silo calculations

Assignment to C24 (RSX, EPX, CXX)

Calculated results (RSX), endpoints (EPX) or variables CXX can be stored as C24. Same procedure for C25.

785 DMP Titrino

2.17. Storing determination results and silo calculations

After several samples have been processed, the silo memory report can have the following appearance (printout with <PRINT><SILO><ENTER>):

'si

785 DMP Titrino 0P1/101 785.0010

date 1999-06-27 time 08:54 14

>silo

cycle lines: OFF

save lines: ON

sl method id 1/C21 id 2/C22 id 3/C23 C00 C24 C25

+ 1 11-2 A/12 94-09-12 0.233g 0.142ml/min 98.53%

+ 2 11-2 A/13 94-09-12 0.286g 0.138ml/min 95.75%

/ 3 11-2 A/14 94-09-12 0.197g 0.145ml/min 100.61%

4 11-2 A/15 94-09-12 0.288g NV NV

5 11-2 A/16 94-09-12 0.263g NV NV

processed silo lines with saved results

The silo lines can be marked as follows (at very left of report): + Silo line has been processed. It cannot be edited anymore. * A silo line not yet processed has been deleted.

- A processed silo line has been deleted and hence removed from the silo calculations.

/ The last processed silo line. Recalculation will be considered e.g., if the sample data

of this line are changed. No marking: The silo line is awaiting processing.

For silo lines ≥100, the first digit will be overwritten by the marking.

2.17.2 Silo calculations

Mean value and standard deviation of the results available in the silo memory can subsequently be calculated over the entire series.

The following details can be entered in the method under <DEF>:

>silo calculations

C24=

C25=

match id: OFF

Silo calculations

Assignment to C24 and C25

Calculated results (RSX), endpoints (EPX) and variables (CXX) can be stored as C24. Identical for C25.

Which sample identifications must match in order to combine of the results (id1, id1&2, all, OFF)

"OFF" means no matching ids, all samples which have been processed with the same method are combined, see examples below.

785 DMP Titrino

2.17 Storing determination results and silo calculations

Starting from the following silo report:

'si

785 DMP Titrino 0P1/101 785.0010

date 1999-06-27 time 08:54 14

>silo

cycle lines: OFF

save lines: ON

sl method id 1/C21 id 2/C22 id 3/C23 C00 C24 C25

+ 1 11-2 A/12 94-09-12 0.233g 0.142ml/min 98.53%

+ 2 0-15 A/13 94-09-12 0.286g 0.9976 NV

+ 3 0-15 A/13 94-09-12 0.197g 0.9947 NV

+ 4 11-2 A/12 94-09-12 0.288g 0.138ml/min 95.75%

/ 5 11-2 A/15 94-09-12 0.263g 0.145ml/min 100.61%

Assignment for C24 only

* *

with "match id: off" the following silo calculation report (scalc full) is obtained:

method id 1/C21 id 2/C22 id 3/C23 mean +/-s n

11-2 * * * Rate 0.142ml/min 0.0035 3

Content 98.30% 2.438 3

0-15 * * * Titer 0.9962 0.00105 2

All samples which have been processed with the same method are combined

With "match id: id1" the following silo calculation report (scalc full) is obtained:

method id 1/C21 id 2/C22 id 3/C23 mean +/-s n

11-2 A/12 * * Rate 0.140ml/min 0.0028 2

Content 97.14% 1.966 2

0-15 A/13 * * Titer 0.9962 0.00105 2

11-2 A/15 * * Rate 0.145ml/min 0.000 1

Content 100.61% 0.000 1

Sample processed with the same method and having the same id1 are combined

The short silo calculation report contains only calculations for the current sample.

method id 1/C21 id 2/C22 id 3/C23 mean +/-s n

11-2 A/15 * * Rate 0.145ml/min 0.000 1

Content 100.61% 0.000 1

The mean values of the silo calculations are available for further result calculations as C26 and C27 and can be used in the Titrino in formulas. Mean value of C24 ⇒ C26 Mean value of C25 ⇒ C27

Important:

• If work is performed with silo calculations, the method name must be entered in the silo memory.

• Results will be overwritten in the silo recalculation, as long as the silo line is marked with "/". If you do not wish such an input, e.g. because you work off an urgent sample between a series, disconnect the silo.

785 DMP Titrino

2.17. Storing determination results and silo calculations

• Calculations and assignments are carried out in the following order:

1. Calculation of the results RSX

2. Assignment of temporary variables C7X for TIP

3. Calculation of means MNX

4. Assignment of silo results C24 and C25

5. Silo calculations

6. Assignment of means C26 and C27 from silo calculations

7. Assignment of common variables C3X

785 DMP Titrino

3 Operation via RS232 Interface

3.1 General rules

The Titrino has an extensive remote control facility that allows full control of the Titrino via the RS 232 interface, i.e. the Titrino can receive data from an external controller or send data to an external controller. CR and LF are used

as terminators for the data transfer. The Titrino sends 2xCR and LF as termination of a data block, to differentiate between a data line which has CR and LF as terminators. The controller terminates its commands with CR and LF. If more than one command per line is sent by the controller, “;” is used as a

separator between the individual commands.

The data are grouped logically and easy to understand. Thus e.g., for the selection of the dialog language, the following must be sent

&Config.Aux.Language "english"

3.1 General rules

whereby it is sufficient to only transmit the boldface characters, thus:

&C.A.L "english"

The quantities of the commands above are: Config configuration data Aux auxiliaries, various data Language setting the dialog language

The data are hierarchically structured (tree form). The quantities that occur in this tree are called objects in the following. The dialog language is an object which can be called up with the

&Config.Aux.Language

command.

If one is in the desired location in the tree, the value of the object can be queried.

&Config.Aux.Language $Q Q means Query

The query command $Q initiates the issuing of the value on the instrument and the value emission is triggered. Entries which start with $, trigger something. They are thus called triggers.

785 DMP Titrino

Values of objects can not only be queried, they can also be modified. Values are always entered in quotes, for example: &Config.Aux.Language "english"

3.1. General rules

3.1.1 Call up of objects

An excerpt from the object tree is represented below:

3rd node

2nd node

1st node

0st node

Language Prog

Aux

Config

RSSet

Root

Rules Example

The root of the tree is designated by &.

The branches (levels) of a tree are marked with a dot (.) when calling up an object.

When calling up an object, it is sufficient to give only as many letters as necessary to uniquely assign the object. If the call is not unequivocal,

Calling up the dialog language

&Config.Aux.Language or &C.A.L

the first object in the series will be recognized.

Mode

Upper- or lowercase letters may be used. &C.A.L or &c.a.l

An object can be assigned a value. Values are signified at the beginning and end by quotes (").

Entering the dialog language:

&C.A.L"english" They may contain up to 24 ASCII characters. Numerical values can contain up to 6 digits, a negative sign, and a decimal point. Numbers

correct entry of numbers:

"0.1" with more than 6 characters are not accepted; more than 4 decimal places are rounded off. For numbers <1, it is necessary to enter leading

incorrect entry of numbers

"1,5" or "+3" or ".1" zeros.

The current object remains until a new object is called.

New objects can be addressed relative to the old object:

entry of another dialog language:

"deutsch"

From the root to node 'Aux': &C.A

Forward from node 'Aux' to 'Prog': .P A preceding dot leads forwards to the next level in the tree.

More than one preceding dot leads one level backwards in the tree. n node backwards re-

Jump from node 'Prog' to node 'Aux' and select

a new object 'Language' at this level: ..L quire n+1 preceding dots.

If you must jump back to the root, enter a preceding &.

Change from node 'Language' via the root to

node 'Mode': &M

785 DMP Titrino

3.1 General rules

3.1.2 Triggers

Triggers initiate an action on the Titrino, for example, starting a process or sending data. Triggers are marked by the introductory symbol $.

The following triggers are possible:

$G Go Starts processes, for ex. starting the mode run or setting the RS 232 interface

parameters $S Stop Stops processes $H Hold Holds processes $C Continue Continues processes after Hold $Q Query Queries all information from the current node in the tree forward up to and

including the values $Q.P Path Queries the path from the root of the tree up to the current node $Q.H Highest Queries the number of son nodes of the current node

Index $Q.N"i" Name Queries the name of the son node with index i, i = 1 - n $D Detail-Info Queries the detailed status information $U qUit Aborts the data flow of the instrument, for example, after $Q

The triggers $G and $S are linked to particular objects, see the summary table page 77ff.

All other triggers can be used at any time and at all locations on the object tree.

Examples:

Querying the value of the baud rate: &Config.RSSet.Baud $Q Querying all values of the node "RSSet": &Config.RSSet $Q Querying the path of the node "RSSet": &Config.RSSet $Q.P Start mode: &Mode $G Querying the detailed status: $D

785 DMP Titrino

3.1. General rules

3.1.3 Status messages

In order to have an efficient control by an external control device, it must also be possible to query status conditions; they provide information on the status of the Titrino. The trigger $D initiates output of the status. Status messages consist of the global status, the detailed status and eventual error messages, e.g. $S.Mode.SET;E26. The global status informs on the activity of the process, while the detailed status conditions show the exact activity within the process.

The following global status conditions are possible:

$G Go: The Titrino is executing the last command. $H Hold: The Titrino has been held ($H, key <meas/hold> or by an error which

effects the hold status)

$C Continue: The Titrino has been restarted actively after hold $R Ready: The Titrino has executed the last command and is ready $S Stop: A process has been aborted in an "unnatural manner". e.g. stopped or aborted

because there was an error.

Detailed status conditions

Status conditions of the global $G:

$G .Mode.DET .Inac: Instrument at the beginning or at the end of a titration.

.Req .Id1: Instrument in the DET mode, requesting Id1 after titration start.

.Id2: Instrument in the DET mode, requesting Id2 after titration start. .Id3: Instrument in the DET mode, requesting Id3 after titration start. .Smpl: Instrument in the DET mode, requesting sample size after titration start. .Unit: Instrument in the DET mode, requesting unit of sample size after titration

start.

.Start: Instrument in the DET mode, processing the start conditions.

.Titr: Instrument in the DET mode, titrating. $G .Mode.MET... As DET. $G .Mode.SET .Inac: Instrument at the beginning or at the end of a titration.

.Req .Id1: Instrument in the SET mode, requesting Id1 after start.

.Id2: Instrument in the SET mode, requesting Id2 after start. .Id3: Instrument in the SET mode, requesting Id3 after start. .Smpl: Instrument in the SET mode, requesting sample size after start.

.Unit: Instrument in the SET mode, requesting unit of sample size after start. .Start: Instrument in the SET mode, processing the start conditions. .SET1: Instrument in the SET mode, titrating to the first endpoint. .SET2: Instrument in the SET mode, titrating to the second endpoint. .Cond.Ok: Instrument in the SET, conditioning, endpoint reached (after the first

startup from the standby mode).

.Cond.Prog: Instrument in the SET mode, conditioning, endpoint not reached

(Conditioning progressing).

$G .Mode.MEAS .Inac: Instrument at the beginning or at the end of a titration.

.Req .Id1: Instrument in the MEAS mode, requesting Id1 after start.

.Id2: Instrument in the MEAS mode, requesting Id2 after start.

.Id3: Instrument in the MEAS mode, requesting Id3 after start.

.Smpl: Instrument in the MEAS mode, requesting sample size after start.

.Unit: Instrument in the MEAS mode, requesting unit of sample size after start. .Meas: Instrument in the MEAS mode, measuring.

$G .Mode.CAL .Inac: Instrument at the beginning or at the end of a calibration

.Req.Temp: Instrument in the CAL mode, requesting calibration temperature. .Meas.Temp: Instrument in the CAL mode, measuring calibration temperature. .Req.Buf1: Instrument in the CAL mode, requesting pH of buffer 1.

785 DMP Titrino

.Meas.Buf1: Instrument in the CAL mode, measures buffer 1. .Req.Buf2: Instrument in the CAL mode, requesting pH of buffer 2. .Meas.Buf2: Instrument in the CAL mode, measures buffer 2.

etc.

$G .Assembly.Bur .Fill: Buret in filling process

.ModeDis: Buret in DIS mode

In TIP, its global status as well as the step number (X) is available.

$G .TIP.X .Inac: Instrument at the beginning or at the end of a TIP.

.Req .Id1: Instrument in the TIP mode, requesting Id1 after start.

.Id2: Instrument in the TIP mode, requesting Id2 after start. .Id3: Instrument in the TIP mode, requesting Id3 after start. .Smpl: Instrument in the TIP mode, requesting sample size after start.

.Unit: Instrument in the TIP mode, requesting unit of sample size after start. .Pause: Instrument in the TIP mode, in pause. .Info: Instrument in the TIP mode, in info. .Mode...: Instrument in the TIP mode, working off a submethod. The detailed

status messages of the submethod appear, see above.

Status conditions of the global $H:

The status message of the action which has been held appears. If the process is held because a monitored limit has been violated, its status message is $H.Mode.XXX.Titr.

3.1 General rules

Status conditions of the global $C:

The status conditions of the global $C are identical with the ones of the global status $G. They appear when the process has been restarted actively from the status "Hold" ($C, key <meas/hold> or automatically after elimination of an error).

785 DMP Titrino

3.1. General rules

Status conditions of the global $R:

$R .Mode.XXXX.QuickMeas: Quick manual measurement from the initial status in mode XXXX. $R .Mode.DET .Inac: Instrument in the DET mode, inactive. $R .Mode.MET .Inac: Instrument in the MET mode, inactive. $R .Mode.SET .Inac: Instrument in the SET mode, inactive.

.Cond.Ok: Instrument in the SET mode, conditioning, endpoint reached.

.Cond.Prog: Instrument in the SET mode, conditioning, endpoint not reached. $R .Mode.MEAS .Inac: Instrument in the MEAS mode, inactive. $R .Mode.CAL .Inac: Instrument in the CAL mode, inactive. $R .Assembly.Bur.ModeDis: Buret in the DIS mode, inactive. $R .TIP.Inac: Instrument in TIP, inactive.

Status conditions of the global $S:

$S .Mode.XXXX.QuickMeas: Quick manual measurement from the initial status in mode XXXX.

The instrument gives the status from which it has been stopped. The detailed status information is therefore identical to for the global status $G. Violation of monitored limits with action "end" give the status message $S.Mode.XXX.Inac;EYYY.

785 DMP Titrino

3.1 General rules

3.1.4 Error messages

Error messages are added to the status messages and separated from them by the sign ";".

E8 Card read/write error.

Exit: Send new command.

E9 Wrong card, a card has been removed/inserted during the inquiry.

Exit: Send new command.

E10 The card has lost data.

Exit: Send new command.

E18 Card battery low (it is between 2.37...2.64 V).

Exit: Send new command.

E20 Check exchange unit.

Exit: Mount Exchange Unit (properly) or &m $S.

E21 Check electrode, short circuit.

Exit: Rectify fault or &m $S.

E22 Check electrode, break.

Exit: Rectify fault or &m $S.

E23 Division by zero.

Exit: The error message disappears on next startup or on recalculation.

E24 Check drive unit.

Exit: Connect drive unit (correctly) or &m $S.

E26 Manual stop.

Exit: The error message disappears on next startup.

E27 Stop V reached in SET.

Exit: The error message disappears on next startup.

E28 Wrong object call up

Exit: Send correct path for object. Start path at root.

E29 Wrong value or no value allowed.

Exit: Send correct value or call up new object.

E30 Wrong trigger, this trigger is not allowed or carrying-out of action not

possible. Exit: Send correct trigger (exception: $D) or call up new object.

E31 Command is not possible in active status. Repeat command in inactive

status. Exit: Send new command.

E32 Command is not possible during titration. Repeat command during the

conditioning phase or in inactive status. Exit: Send new command.

E33 Value has been corrected automatically.

Exit: Send new command.

E34 Instrument at the end of the titration and sample data is edited; the instrument

at rest or editing during filling. Exit: &m $S.

785 DMP Titrino

3.1. General rules

RS receive errors:

E36 Parity

Exit: <QUIT> and ensure settings of appropriate parameters at both devices are the same.

E37 Framing error

Exit: <QUIT> and ensure settings of appropriate parameters at both devices are the same.

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

Exit: <QUIT>

E39 The internal working-off buffer of the Titrino is full (>82

characters). Exit: <QUIT>

RS send errors:

E42 CTS=OFF No proper handshake 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 6 s. Exit: Send XON or <QUIT>

E45 The receive buffer of the Titrino contains an incomplete command

(LF missing). Sending from the Titrino is therefore blocked. Exit: Send LF or <QUIT>.

E120 Overrange of the primary measured value (pH, U, Ipol, Upol or T

with MEAS T). The secondary measured value (temperature) may be instable as well. Exit: Correct error or &m $S.

E121 Measuring point list overflow (more than 500 measuring points).

Exit: The error message disappears on next startup.

E122 EP overflow.

Exit: The error message disappears on next startup or on recalculation.

E123 Missing EP for calculation.

Exit: The error message disappears on next startup or on recalculation.

E124 Number of EP does not correspond with the set windows.

Exit: The error message disappears on next startup or on recalculation.

E125 Missing fix EP for calculation, has not been defined.

Exit: The error message disappears on next startup or on recalculation.

E126 Fix-EP outside of measuring point list.

Exit: The error message disappears on next startup or on recalculation.

E128 No new mean.

Exit: The error message disappears on next startup or on recalculation.

E129 No new common variable, old value remains.

Exit: The error message disappears on next startup or on recalculation.

785 DMP Titrino

3.1 General rules

E130 Wrong sample. For SET with preset titration direction the first

measured value lies behind the endpoint. Exit: The error message disappears on next startup.

E131 No EP set for SET.

Exit: The error message disappears on next startup.

E132 Silo empty and it has been started with open silo or empty silo has

been opened. Exit: Send a silo entry.

E133 Silo full.

Exit: Send new command.

E134 No method. A method, which is required from the silo memory or in TIP, does

not exist. Exit: The error message disappears on next startup.

E135 Check temp.sensor in MEAS T or with activated temperature monitoring.

Exit: Correct error or &m $S.

E136 Same buffer in CAL. Measured value of the second buffer differs less than 6

mV from the measured value of the first buffer. Exit: Correct error or &m $S.

E137 XXX Bytes are missing so that the method, the silo line could not be stored or

not enough RAM for running TIP. Exit: Send new command.

E155 No new silo result (C24 or C25).

Exit: The error message disappears on next start or on recalculation.

E157 No sequence defined in TIP.

Exit. The error message disappears on next start.

E158 A second TIP has been called up in TIP.

Exit: The error message disappears on next start.

E160 No new temporary variable.

Exit: The error message disappears on next start.

E161 Measurement range of the secondary measured value (temperature)

exceeded. The primary measured value (pH, U, Ipol, Upol) can also be unstable. Exit: Rectify error or &m $S.

E166 Save lines is "OFF" although a submethod of TIP includes an assignment to

C24 or C25. Exit: The error message disappears on next start. Attention: The data of this sample will not be stored.

E172 In TIP, a QuickMeas was started, without defining a measuring quantity.

Exit: The error message disappears on next start or &Mode.QuickMeas $S.

E177 Accessing to the memory card, the card was not (properly) inserted.

Exit. The error message disappears on next start.

E178 The date of changing the battery of the card is expired.

Exit. The error message disappears on next start.

E180 Memory card write-protected.

Exit: Send new command.

E181 Memory card not formatted.

Exit: Send new command.

E182 Memory card not accessible.

Exit: Send new command.

E183 A directory with the same name exists already on the memory card.

Exit: Send new command.

785 DMP Titrino

3.1. General rules

E196 Result is out of limits.

Exit: The error message disappears on next start or on recalculation.

E197 Sample size is out of limits.

Exit: The error message disappears on next start or on introduction of new sample size.

E198 Validation interval is expired.

Exit: The error message disappears on next start or clear counter with &Config.Monitoring.Validation.ClearCount $G.

E199 Service date is reached.

Exit: The error message disappears on next start or change date in &Config.Monitoring.Service.Date.

E205 Calibration interval is expired.

Exit: The error message disappears on next calibration or if you delete the calibration.

E212 Transmission error from Remote Box. Unknown characters.

Exit: Rectify error and switch Titrino off and on again.

E213 Time-out error from PC keyboard (Remote Box)

Exit: Rectify error and switch Titrino off and on again.

E214 Check Remote Box. Remote Box not (properly) connected but activated in

&Config.Periph.RemoteBox. Exit: Rectify error and switch Titrino off and on again.

E270 Overload in dosing element.

Exit: <STOP> then <CLEAR>. The dosing element will be initialized. If the error reappears, check the wet part.

785 DMP Titrino

3.2 Remote control commands

3.2.1 Overview

The internal object tree can be divided into the following branches:

& Root

Ã Mode Method parameters Ã UserMeth Administration of the internal user-memory for methods Ã MemoryCard Administration of the memory card Ã Config Instrument configuration Ã SmplData Sample specific data Ã Hotkey Keys with direct access Ã Info Current Data Ã Assembly Component data Ã Setup Setting the operating mode À Diagnosis Diagnostics program

785 DMP Titrino

3.2. Remote control commands

&Mode

Object Description Input range Reference

& Root

Ã Mode Mode $G, $S, $H, $C 3.2.2.1. : Ã .QuickMeas Rapid meas. in basic mode $G, $S 3.2.2.2.

Ã .Select Mode selection DET,MET,SET, ³ MEAS,CAL,TIP 3.2.2.3. Ã .DETQuantity Measured quantity for DET pH, U, Ipol, Upol ditto Ã .METQuantity Measured quantity for MET pH, U, Ipol, Upol ditto Ã .SETQuantity Measured quantity for SET pH, U, Ipol, Upol ditto Ã .MEASQuantity Measured quantity for MEAS pH, U, Ipol, Upol, T ditto Ã .Name Name of current method read only/read+write 3.2.2.4. Ã .Parameter* Parameter of current mode, see below ³ Ã .Def Definitions for data output ³ Ã .Formulas Calculation formulas ³ ³ Ã .1 for result 1 ³ ³ ³ Ã .Formula Calculation formula special 3.2.2.5. ³ ³ ³ Ã .TextRS Text for result output up to 8 ASCII char ditto ³ ³ ³ Ã .Decimal Number of decimal places 0...2...5 ditto ³ ³ ³ Ã .Unit Unit for result output up to 6 ASCII char ditto ³ ³ ³ Ã .Limits Limits for result ON, OFF ditto ³ ³ ³ Ã .LoLim Lower limit 0...±999 999 ditto ³ ³ ³ Ã .UpLim Upper limit 0...±999 999 ditto ³ ³ ³ Ã .Output Output on L13 active, pulse, OFF ditto ³ ³ ³ : up to 9 results ³ Ã .SiloCalc Silo calculations ³ ³ Ã .Assign Assignment ³ ³ ³ Ã .C24 Store as variable C24 RSX,EPX,CXX 3.2.2.6. ³ ³ ³ Ã .C25 Store as variable C25 RSX,EPX,CXX ³ ³ Ã .MatchId Matching of Id's id1, id1&2, all, OFF ³ Ã .ComVar Assignment of common variables ³ ³ Ã .C30 for C30 RSX,EPX,CXX,MNX 3.2.2.7. ³ ³ Ã up to C39 ³ Ã .Report Reports at the end of determination ³ ³ Ã .Assign1 Output to COM1 special 3.2.2.8. ³ ³ Ã .Assign2 Output to COM 2 as COM1 ³ Ã .Mean Assignment for mean calculation ³ ³ Ã .1 MN1 ³ ³ ³ Ã .Assign Input of variable RSX, EPX, CXX 3.2.2.9. ³ ³ ³ : ³ Ã .TempVar Assignment of temporary variables ³ ³ Ã .C70 for C70 RSX,EPX,CXX 3.2.2.10. ³ ³ Ã up to C79 Ã .CFmla Calculation constants ³ Ã .1 Calculation constant C01 ³ ³ Ã .Value Input of value 0...±999 999 3.2.2.11. ³ Ã up to C19

785 DMP Titrino

3.2 Remote control commands

*Parameter Tree part "Parameters for DET"

Ã .TitrPara Titration parameters ³ Ã .MptDensity Measuring point density 0...4...9 3.2.2.12. ³ Ã .MinIncr Minimum increment 0...10.0...999.9 ditto ³ Ã .DosRate Dispensing rate for increments 0.01...150.0, max. 3.2.2.13. ³ Ã .SignalDrift Drift for meas. value acquisition depends on meas.quant. 3.2.2.14. ³ Ã .UnitSigDrift Unit of measured value drift read only ditto ³ Ã .EquTime Equilibrium time 0...26...9999, OFF ditto ³ Ã .StartV Start volume ³ ³ Ã .Type Type of start volume abs., rel., OFF 3.2.2.15. ³ ³ Ã .V Volume for absolute start volume 0...999.99 ditto ³ ³ Ã .Factor Factor for relative start volume 0...±999 999 ditto ³ ³ Ã .Rate Dispensing rate for start volume 0.01...150.0, max. ditto ³ Ã .Pause Waiting time 0...999 999 3.2.2.16. ³ Ã .MeasInput Measuring input 1, 2, diff. 3.2.2.17. ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .PolElectrTest Test for polarized electrodes ON, OFF ditto ³ Ã .Temp Titration temperature -170.0...25.0...500.0 3.2.2.18.

³ Ã .StopCond Stop conditions

³ Ã .VStop Stop volume ³ ³ Ã .Type Type of stop volume abs., rel., OFF 3.2.2.19. ³ ³ Ã .V Volume for absolute stop volume 0...99.99...9999.99 ditto ³ ³ Ã .Factor Factor for relative stop volume 0...±999 999 ditto ³ Ã .MeasStop Stop measured value pH, U, I depends on meas.quant. 3.2.2.20. ³ Ã .UnitMStop Unit of stop measured value read only ditto ³ Ã .EPStop Stop after a number of EP's 1...9, OFF 3.2.2.21. ³ Ã .FillRate Filling rate 0.01...150.0, max. 3.2.2.22.

³ Ã .Statistics Statistics

³ Ã .Status Status of statistics calculation ON, OFF 3.2.2.23. ³ Ã .MeanN No. of individual determinations 2...20 ditto ³ Ã .ResTab Result table ³ ³ Ã .Select original,delete n,delete all ditto ³ ³ Ã .DelN Deletion of individual results 1...20 ditto

³ Ã .Evaluation Evaluation

³ Ã .EPC EP criterion 0...5...200 3.2.2.24. ³ Ã .Recognition EP recognition ³ ³ Ã .Select Type of EP recognition all,greatest,last,window,OFF ditto ³ ³ Ã .Window Window ³ ³ ³ Ã .1 up to 9 windows ³ ³ ³ ³ Ã.LowLim Lower limit window 1 depends on meas.quant. ditto ³ ³ ³ ³ Ã.UpLim Upper limit window 1 depends on meas.quant. ditto ³ Ã .FixEP Fix endpoints ³ ³ Ã .1 up to 9 fix EP's ³ ³ ³ Ã.Value Measured value for fix EP1 depends on meas.quant. ditto ³ Ã .pK pK or HNP evaluation ON, OFF ditto

³ Ã .Presel Preselections

³ Ã .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.25. ³ Ã .Sreq Request of smpl size after start value, unit, all, OFF ditto ³ Ã .LimSmplSize Limits for sample size 3.2.2.26. ³ ³ Ã .Status Status of limit control ON, OFF ditto ³ ³ Ã .LoLim Lower limit 0.0...999 999 ditto ³ ³ Ã .UpLim Upper limit 0.0...999 999 ditto ³ Ã .ActPulse Output of a pulse ON, OFF 3.2.2.27.

785 DMP Titrino

3.2. Remote control commands

*Parameter Tree part "Parameters for MET"

Ã .TitrPara Titration parameters ³ Ã .VStep Volume increment 0...0.10...999.9 3.2.2.12. ³ Ã .DosRate Dispensing rate for increments 0.01...150.0, max. 3.2.2.13. ³ Ã .SignalDrift Drift for meas. value acquisition depends on meas.quant. 3.2.2.14. ³ Ã .UnitSigDrift Unit of measured value drift read only ditto ³ Ã .EquTime Equilibrium time 0...26...9999, OFF ditto ³ Ã .StartV Start volume ³ ³ Ã .Type Type of start volume abs., rel., OFF 3.2.2.15. ³ ³ Ã .V Volume for absolute start volume 0...999.99 ditto ³ ³ Ã .Factor Factor for relative start volume 0...±999 999 ditto ³ ³ Ã .Rate Dispensing rate for start volume 0.01...150.0, max. ditto ³ Ã .Pause Waiting time 0...999 999 3.2.2.1. ³ Ã .MeasInput Measuring input 1, 2, diff. 3.2.2.18. ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .PolElectrTest Test for polarized electrodes ON, OFF ditto ³ Ã .Temp Titration temperature -170.0...25.0...500.0 3.2.2.19.

³ Ã .StopCond Stop conditions

³ Ã .VStop Stop volume ³ ³ Ã .Type Type of stop volume abs., rel., OFF 3.2.2.20. ³ ³ Ã .V Volume for absolute stop volume 0...99.99...9999.99 ditto ³ ³ Ã .Factor Factor for relative stop volume 0...±999 999 ditto ³ Ã .MeasStop Stop measured value pH, U, I depends on meas.quant. 3.2.2.21. ³ Ã .UnitMStop Unit of stop measured value read only ditto ³ Ã .EPStop Stop after a number of EP's 1...9, OFF 3.2.2.22. ³ Ã .FillRate Filling rate 0.01...150.0, max. 3.2.2.23.

³ Ã .Statistics Statistics

³ Ã .Status Status of statistics calculation ON, OFF 3.2.2.24. ³ Ã .MeanN No. of individual determinations 2...20 ditto ³ Ã .ResTab Result table ³ ³ Ã .Select original,delete n,delete all ditto ³ ³ Ã .DelN Deletion of individual results 1...20 ditto

³ Ã .Evaluation Evaluation

³ Ã .EPC EP criterion depends on meas.quant. 3.2.2.25. ³ Ã .Recognition EP recognition ³ ³ Ã .Select Type of EP recognition all,greatest,last,window,OFF ditto ³ ³ Ã .Window Window ³ ³ ³ Ã .1 up to 9 windows ³ ³ ³ ³ Ã.LowLim Lower limit window 1 depends on meas.quant. ditto ³ ³ ³ ³ Ã.UpLim Upper limit window 1 depends on meas.quant. ditto ³ Ã .FixEP Fix endpoints ³ ³ Ã .1 up to 9 fix EP's ³ ³ ³ Ã.Value Measured value for fix EP1 depends on meas.quant. ditto ³ Ã .pK pK or HNP evaluation ON, OFF ditto

³ Ã .Presel Preselections

³ Ã .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.26. ³ Ã .SReq Request of sample size after start value, unit, all, OFF ditto ³ Ã .LimSmplSize Limits for sample size 3.2.2.27 ³ ³ Ã .Status Status of limit control ON, OFF ditto ³ ³ Ã .LoLim Lower limit 0.0...999 999 ditto ³ ³ Ã .UpLim Upper limit 0.0...999 999 ditto ³ Ã .ActPulse Output of a pulse ON, OFF 3.2.2.28.

785 DMP Titrino

3.2 Remote control commands

*Parameter Tree part "Parameters for SET"

Ã .SET1 Control parameters for EP1 ³ Ã .EP Endpoint 1 depends on meas.quant. 3.2.2.28. ³ Ã .UnitEp Unit of endpoint read only ditto ³ Ã .Dyn Dynamics depends on meas.quant. 3.2.2.29. ³ Ã .UnitDyn Unit of dynamics read only ditto ³ Ã .MaxRate Maximum dosing rate 0.01...10...150, max. ditto ³ Ã .MinRate Minimum dosing rate 0.01...25.0...9999 ditto ³ Ã .Stop Titration stop ³ ³ Ã .Type Type of stop criterion drift, time 3.2.2.30. ³ ³ Ã .Drift Stop drift 1...20...999 ditto ³ ³ Ã .Time Switch-off delay time 0...10...999, inf ditto ³ ³ Ã .StopT Stop time 0...999 999, OFF ditto Ã .SET2 Control parameters for EP2, as for EP1 Ã .TitrPara Titration parameters ³ Ã .Direction Titration direction +, -, auto 3.2.2.31. ³ Ã .XPause Waiting time before start volume 0...999 999 3.2.2.32. ³ Ã .Start V Start volume ³ ³ Ã .Type Type of start volume abs., rel., OFF 3.2.2.15. ³ ³ Ã .V Volume for absolute start volume 0...999.99 ditto ³ ³ Ã .Factor Factor for relative start volume 0...±999 999 ditto ³ ³ Ã .Rate Dispensing rate for start volume 0.01...150.0, max. ditto ³ Ã .Pause Waiting time after start volume 0...999 999 3.2.2.16. ³ Ã .ExtrT Extraction time 0...999 999 3.2.2.33. ³ Ã .MeasInput Measuring input 1, 2, diff. 3.2.2.18. ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .PolElectrTest Test for polarized electrodes ON, OFF ditto ³ Ã .Temp Titration temperature -170.0...25.0...500.0 3.2.2.19. ³ Ã .TDelta Time interv. for meas.acquisition 1...2...999 999 3.2.2.34.

³ Ã .StopCond Stop conditions

³ Ã .Statistics Statistics

³ Ã .Presel Preselections

³ Ã .Cond Conditioning ON, OFF 3.2.2.35. ³ Ã .DriftDisp Display of drift during cond. ON, OFF ditto ³ Ã .DCor Drift correction ³ ³ Ã .Type Type of drift acquisition auto, man., OFF ditto ³ ³ Ã .Value Drift value for manual drift corr. 0.0...99.9 ditto ³ Ã .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.26. ³ Ã .SReq Request of smpl size after start value, unit, all, OFF ditto ³ Ã .LimSmplSize Limits for sample size 3.2.2.27 ³ ³ Ã .Status Status of limit control ON, OFF ditto ³ ³ Ã .LoLim Lower limit 0.0...999 999 ditto ³ ³ Ã .UpLim Upper limit 0.0...999 999 ditto ³ Ã .ActPulse Output of a pulse first, all, cond., OFF 3.2.2.28.

785 DMP Titrino

3.2. Remote control commands

*Parameter Tree part "Parameters for MEAS"

Ã .Measuring Measuring parameters ³ Ã .SignalDrift Drift for meas.value acquisition depends on meas.quant. 3.2.2.36. ³ Ã .UnitSigDrift Unit of measured value drift read only ditto ³ Ã .EquTime Equilibrium time 0...9999, OFF ditto ³ Ã .MeasInput Measuring input 1, 2, diff. 3.2.2.37. ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .PolElectrTest Test for polarized electrodes ON, OFF ditto ³ Ã .Temp Titration temperature -170.0...25.0...500.0 3.2.2.38. ³ Ã .TDelta Time interv.for meas.acquisition 1...2...999 999 3.2.2.39. ³ ³ Ã .Statistics Statistics ³ Ã .Status Status of statistics calculation ON, OFF 3.2.2.24. ³ Ã .MeanN No. of individual determinations 2...20 ditto ³ Ã .ResTab Result table ³ ³ Ã .Select original,delete n,delete all ditto ³ ³ Ã .DelN Deletion of individual results 1...20 ditto ³ ³ Ã .Presel Preselections ³ Ã .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.26. ³ Ã .SReq Request of sample size after start value, unit, all, OFF ditto ³ Ã .LimSmplSize Limits for sample size 3.2.2.27 ³ ³ Ã .Status Status of limit control ON, OFF ditto ³ ³ Ã .LoLim Lower limit 0.0...999 999 ditto ³ ³ Ã .UpLim Upper limit 0.0...999 999 ditto ³ Ã .ActPulse Output of a pulse ON, OFF 3.2.2.28.

*Parameter Tree part "Parameters for CAL"

Ã .Calibration Calibration parameters ³ Ã .MeasInput Measuring input 1, 2, diff. 3.2.2.40. ³ Ã .CalTemp Calibration temperature -20.0...25.0...120.0 3.2.2.41. ³ Ã .Buffer ³ ³ Ã .1 ³ ³ ³ Ã .Value pH value of buffer 1 0...7.00...±20.00 3.2.2.42. ³ ³ Ã .2 ³ ³ ³ Ã .Value pH value of buffer 2 0...4.00...±20.00, OFF ditto ³ ³ Ã : up to 9 buffers ³ Ã .SignalDrift Drift for meas.value acquisition depends on meas.quant. 3.2.2.43. ³ Ã .EquTime Equilibrium time 0...26...9999, OFF ditto ³ Ã .ElectrodeId Electrode identification 8 ASCII char. 3.2.2.44. ³ Ã .SmplChanger Calibration on a Titrino ON, OFF 3.2.2.45. ³ Ã .ActPulse Output of a pulse first, all, OFF 3.2.2.46. ³ ³ Ã .Statistics Statistics ³ Ã .Status Status of statistics calculation ON, OFF 3.2.2.24. ³ Ã .MeanN No.of individual determinations 2...20 ditto ³ Ã .ResTab Result table ³ ³ Ã .Select original,delete n,delete all ditto ³ ³ Ã .DelN Deletion of individual results 1...20 ditto

785 DMP Titrino

3.2 Remote control commands

*Parameter Tree part "Parameters for TIP"

Ã .Sequence Sequence ³ Ã .1 Step 1 ³ ³ Ã .Select Step selection method,pause,L4 output,L6 output, ³ ³ info,stirrer,OFF 3.2.2.47. ³ ³ Ã .Method Method from mem.or card special 3.2.2.48. ³ ³ Ã .Pause Waiting time 0...999 999, INF ditto ³ ³ Ã .L4Output Line L4 active,inactive,pulse,OFF ditto ³ ³ Ã .L6Output Line L6 active,inactive,pulse,OFF ditto ³ ³ Ã .Info Display information up to 16 ASCII char. ditto ³ ³ Ã .Stirrer Stirrer ON, OFF ditto ³ Ã : up to 30 steps ³ ³ Ã .Statistics Statistics ³ Ã .Status Status of statistics calculation ON, OFF 3.2.2.24. ³ Ã .MeanN No. of individual determinations 2...20 ditto ³ Ã .ResTab Result table ³ ³ Ã .Select original,delete n,delete all ditto ³ ³ Ã .DelN Deletion of individual results 1...20 ditto ³ ³ Ã .Presel Preselections ³ Ã .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.26. ³ Ã .SReq Request of sample size after start value, unit, all, OFF ditto ³ Ã .LimSmplSize Limits for sample size 3.2.2.27 ³ ³ Ã .Status Status of limit control ON, OFF ditto ³ ³ Ã .LoLim Lower limit 0.0...999 999 ditto ³ ³ Ã .UpLim Upper limit 0.0...999 999 ditto ³ Ã .MeasMode Measuring mode for man.meas. pH,U,Ipol,Upol,T,OFF 3.2.2.49. ³ Ã .MeasInput Measuring input 1, 2, diff. ditto ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .PolElectrTest Test for polarized electrodes ON, OFF ditto ³ Ã .Temp Titration temperature -170.0...25.0...500.0 ditto

785 DMP Titrino

3.2. Remote control commands

&UserMeth

Object Description Input range Reference

& Root

: Ã UserMeth Method memory : Ã .FreeMemory Memory available read only 3.2.2.50.

Ã .Recall Load method $G 3.2.2.51. ³ Ã .Name Method name 8 ASCII characters ditto Ã .Store Save method $G ditto ³ Ã .Name Method name 8 ASCII characters ditto Ã .Delete Delete method $G ditto ³ Ã .Name Method name 8 ASCII characters ditto Ã .DelAll Delete all methods $G ditto Ã .List List of methods ³ Ã .1 Method 1 ³ ³ Ã .Name Method name read only 3.2.2.52. ³ ³ Ã .Mode Mode read only ditto ³ ³ Ã .Quantity Measured quantity read only ditto ³ ³ Ã .Bytes Method size in bytes read only ditto ³ ³ Ã .Checksum Checksum of method read only ditto

Ã .2 for each method

785 DMP Titrino

3.2 Remote control commands

&MemoryCard

Object Description Input range Reference

& Root

: Ã MemoryCard Administration of the memory card : Ã .Recall Load method $G 3.2.2.53.

³ Ã .Name Method name 8 ASCII characters ditto Ã .Store Save method $G ditto ³ Ã .Name Method name 8 ASCII characters ditto Ã .Delete Delete method $G ditto ³ Ã .Name Method name 8 ASCII characters ditto Ã .ChangeDir Change directory $G 3.2.2.54. ³ Ã .Name Directory name 10 ASCII characters ditto ³ Ã .Checksum Checksum of directory $G ditto ³ ³ Ã .Value Value of checksum read only ditto Ã .CreateDir Create new directory $G 3.2.2.55. ³ Ã .Name Directory name 10 ASCII characters ditto Ã .DelDir Delete directory $G 3.2.2.56. ³ Ã .Name Directory name 10 ASCII characters ditto Ã .Backup Backup of internal memory $G 3.2.2.57. ³ Ã .Name Directory name 10 ASCII characters ditto Ã .Reload Reload backup from the card $G 3.2.2.58. ³ Ã .Name Directory name 10 ASCII characters ditto Ã .Format Format the card $G 3.2.2.59. ³ Ã .CardLabel Directory name ³ ³ Ã .Name Value of checksum 8 ASCII characters ditto Ã .FreeMemory Memory available read only 3.2.2.60. Ã .BatteryChange Date for battery change $G 3.2.2.61. ³ Ã .Date Date YYYY-MM-DD ditto Ã .List Lists ³ Ã .Card Directories on the card read only ³ ³ Ã .1 Method 1 ³ ³ ³ Ã .Name Directory name read only 3.2.2.62. ³ ³ ³ Ã .Bytes Directory size in bytes read only ditto ³ ³ Ã .2 for each directory ³ Ã .ActDir Methods in the current directory ³ ³ Ã .1 Method 1 ³ ³ ³ Ã .Name Method name read only 3.2.2.63. ³ ³ ³ Ã .Mode Mode read only ditto ³ ³ ³ Ã .Quantity Measured quantity read only ditto ³ ³ ³ Ã .Bytes Method size in bytes read only ditto ³ ³ ³ Ã .Checksum Checksum of method read only ditto ³ ³ Ã .2 for each method

785 DMP Titrino

3.2. Remote control commands

&Config

Object Description Input range Reference

& Root

Ã Config Instrument configuration : Ã .Monitoring Monitoring functions

³ Ã .Validation Validation monitoring 3.2.2.64. ³ ³ Ã .Status Status of validation monitoring ON, OFF ditto ³ ³ Ã .Interval Time interval for validation 1...365...9999 ditto ³ ³ Ã .Counter Time counter 0...9999 ditto ³ ³ Ã .ClearCount Clears the counter above $G ditto ³ Ã .Calibration pH calibration monitoring 3.2.2.65. ³ ³ Ã .Status Status of calibration monitoring ON, OFF ditto ³ ³ Ã .MeasInput Measuring input 1, 2, diff ditto ³ ³ Ã .Interval Time interval for validation 1...7...9999 ditto ³ ³ Ã .Counter Time counter 0...9999 ditto ³ Ã .Service Monitoring of Metrohm service $G 3.2.2.66. ³ ³ Ã .Status Status of service monitoring ON, OFF ditto ³ ³ Ã .Date Date of next service XXXX-XX-XX ditto ³ Ã .DiagRep Printing of system test report ON, OFF 3.2.2.67. ³ Ã .PeriphUnit Selection of peripheral units ³ Ã .CharSet1 External printer Epson,Seiko,Citizen ³ ³ IBM,HP 3.2.2.68. ³ Ã .CharSet2 as for CharSet1 ³ Ã .RepToComport Output of manual reports 1, 2, 1&2 3.2.2.69. ³ Ã .Balance Selection of balance Sartorius,Mettler,Mettler AT ³ ³ AND,Precisa 3.2.2.70. ³ Ã .Stirrer Stirrer control ON, OFF 3.2.2.71. ³ Ã .RemoteBox Connected remote box 3.2.2.72. ³ ³ Ã .Status Status ON, OFF ditto ³ ³ Ã .Keyboard Type of keyboard US, deutsch, francais, ³ ³ ³ español, schweiz. ditto ³ ³ Ã .Barcode Input of barcode reader input, method, id1, id2, ³ ³ ³ id3, smpl size ditto ³ Ã .Aux Miscellaneous ³ Ã .Language Dialog language english, deutsch, ³ ³ francais, espanol, italiano, ³ ³ portugese, svenska 3.2.2.73. ³ Ã .Set Setting of date and time $G 3.2.2.74. ³ ³ Ã .Date Date XXXX-XX-XX ³ ³ Ã .Time Time XX:XX ³ Ã .RunNo Run number 0...9999 3.2.2.75. ³ Ã .AutoStart Automatic start 1...9999, OFF 3.2.2.76. ³ Ã .StartDelay Start delay time 0...999 999 3.2.2.77. ³ Ã .ResDisplay Result display standard,bold 3.2.2.78. ³ Ã .DevName Device label 8 ASCII char. 3.2.2.79. ³ Ã .Prog Program version read only 3.2.2.80. ³

785 DMP Titrino

3.2 Remote control commands

Ã .RSSet1 Settings RS232, 1 $G 3.2.2.81. ³ Ã .Baud Baud rate 300,600,1200,2400,4800, ³ ³ 9600,19200,38400,57600, ³ ³ 115200 ditto ³ Ã .DataBit Number of data bits 7, 8 ditto ³ Ã .StopBit Number of stop bits 1, 2 ditto ³ Ã .Parity Parity even, odd, none ditto ³ Ã .Handsh Handshake HWs, SWchar, ³ ³ SWline, none ditto Ã .RSSet2 as for RS1 ³ Ã .ComVar Values of common variables ³ Ã .C30 C30 0... ±999 999 3.2.2.82. ³ Ã up to C39 0... ±999 999 ³

785 DMP Titrino

3.2. Remote control commands

&SmplData

Object Description Input range Reference

& Root

Ã SmplData Sample data : Ã .Status Status of silo memory ON, OFF 3.2.2.83.

Ã .OFFSilo Current sample data ³ Ã .Id1 Sample identification 1 up to 8 ASCII char 3.2.2.84. ³ Ã .Id2 Sample identification 2 up to 8 ASCII char ditto ³ Ã .Id3 Sample identification 3 up to 8 ASCII char ditto ³ Ã .ValSmpl Sample size ±X.XXXXX ditto ³ Ã .UnitSmpl Unit of sample size up to 5 ASCII char ditto Ã .ONSilo Current sample data ³ Ã .Counter Counter of silo memory ³ ³ Ã .MaxLines Maximum lines read only 3.2.2.85. ³ ³ Ã .FirstLine First line read only ditto ³ ³ Ã .LastLine Last line read only ditto ³ Ã .EditLine Editing silo lines ³ ³ Ã .1 1

silo line

³ ³ ³ Ã .Method Method name up to 8 ASCII char 3.2.2.86. ³ ³ ³ Ã .Id1 Sample identification 1 up to 8 ASCII char ditto ³ ³ ³ Ã .Id2 Sample identification 2 up to 8 ASCII char ditto ³ ³ ³ Ã .Id3 Sample identification 3 up to 8 ASCII char ditto ³ ³ ³ Ã .ValSmpl Sample size ±X.XXXXX ditto ³ ³ ³ Ã .UnitSmpl Unit of sample size up to 5 ASCII char ditto ³ ³ ³ Ã .C24 Value of variable C24 read only ditto ³ ³ ³ Ã .C25 Value of variable C25 read only ditto ³ ³ ³ Ã .Mark Mark of silo line read only ditto ³ ³ Ã up to 255 lines ³ Ã .DelLine Delete silo line $G 3.2.2.87. ³ ³ Ã .LineNum Line number 1...255, OFF ditto ³ Ã .DelAll Delete silo line $G 3.2.2.88. ³ Ã .CycleLines Cycle lines ON, OFF 3.2.2.89. ³ Ã .SaveLines Save results ON, OFF 3.2.2.90.

785 DMP Titrino

3.2 Remote control commands

&HotKey

Object Description Input range Reference

& Root

Ã HotKey Keys with direct access : Ã .User User name 3.2.2.91.

³ Ã .Name Input of user name up to 10 ASCII char ditto ³ Ã .Delete Delete user $G ditto ³ ³ Ã .Name Input of user name up to 10 ASCII char ditto ³ Ã .DelAll Delete all users $G ditto ³ Ã .List List of users ³ ³ Ã .1 User 1 ³ ³ ³ Ã .Name Name of user read only ditto ³ ³ Ã up to 99

785 DMP Titrino

3.2. Remote control commands

&Info

Object Description Input range Reference

& Root

Ã Info Current data : Ã .Report Transmission of formatted reports $G 3.2.2.92.

³ Ã .Select Report type configuration, parameters, ³ smpl data, statistics, silo, calib ³ C-fmla, def, user method, full, ³ short, mplist, curve, derive, comb, ³ adj para, scalc full, scalc srt, calc, ³ act dir, mem card, all, ff ditto ³ Ã .CalibrationData pH calibration data $G 3.2.2.93. ³ Ã .Inp1 For measuring input 1 ³ ³ Ã .pHas Asymmetry pH 0...7.00...±20.00 ditto ³ ³ Ã .Slope Slope of electrode 0...1.000...±9.999 ditto ³ ³ Ã .Temp Calibration temperature -170.0...25.0...500.0 ditto ³ ³ Ã .Date Date of calibration read only ditto ³ ³ Ã .ElectrodeId Id of the calibrated electrode read only ditto ³ Ã .Inp2 For measuring input 2, as for input 1 ³ Ã .Diff For differential input, as for input 1 ³ Ã .Checksums Checksums $G 3.2.2.94. ³ Ã .MPList Checksum of meas.point list read only ditto ³ Ã .ActualMethod Checksum of current method read only ditto ³ Ã .DetermData Determination data $G 3.2.2.95. ³ Ã .Write Read/write for several nods ON, OFF ³ Ã .ExV Volume of Exchange/Dosing unit read only/read+write ditto ³ Ã .MPList Measuring point list ³ ³ Ã .1 Measuring point 1 ³ ³ ³ Ã .Attribute Attribute read only/read+write ditto ³ ³ ³ Ã .X X coordinate read only/read+write ditto ³ ³ ³ Ã .Y Y coordinate read only/read+write ditto ³ ³ ³ Ã .Z1 Z1 coordinate read only/read+write ditto ³ ³ ³ Ã .Z2 Z2 coordinate read only/read+write ditto ³ ³ ³ for each measuring point ³ Ã .TitrResults Titration results ³ Ã .RS Calculated results ³ ³ Ã .1 1

result

³ ³ ³ Ã .Value Value read only 3.2.2.96. ³ ³ Ã up to 9 results

"Info", continuation

³ Ã .EP Endpoint ³ ³ Ã .1 1

result

³ ³ ³ Ã .V Value read only ditto ³ ³ ³ Ã .Meas Measured value read only ³ ³ ³ Ã .Mark Mark if more than 1 EP per window read only ³ ³ Ã up to 9 EP's ³ Ã .Var Variables C4X ³ ³ Ã .C40 Start measured value read only/read+write ditto ³ ³ Ã .C41 Titration end volume read only/read+write ³ ³ Ã .C42 Titration time read only/read+write

785 DMP Titrino

3.2 Remote control commands

³ ³ Ã .C43 Volume drift in SET read only/read+write ³ ³ Ã .C44 Titration temperature read only/read+write ³ ³ Ã .C45 Start volume read only/read+write ³ ³ Ã .C46 Asymmetry pH read only ³ ³ Ã .C47 Slope of electrode read only ³ ³ Ã .C48 Volume at maximum voltage read only/read+write ³ ³ Ã .C49 Volume at minimum voltage read only/read+write ³ ³ Ã .DTime Time for drift corr.or dosing time read only/read+write ³ Ã .FixEP Fix EP ³ ³ Ã .51 C51 ³ ³ ³ Ã .Value Value read only 3.2.2.97. ³ ³ ³ up to 59 ³ Ã .pK pK/HNP ³ ³ Ã .61 C61 ³ ³ ³ Ã .Value Value read only ditto ³ ³ ³ up to 69 ³ Ã .TempVar Temporary variables C7X ³ ³ Ã .C70 up to C79 read only/read+write ditto ³ Ã .StatisticsVal Statistics values ³ Ã .ActN Number of results in chart read only 3.2.2.98. ³ Ã .1 1

mean

³ ³ Ã .Mean Mean read only ditto ³ ³ Ã .Std Absolute standard deviation read only ditto ³ ³ Ã .RelStd Relative standard deviation read only ditto ³ Ã up to 9 mean values ³ Ã .SiloCalc Values of silo calculations ³ Ã .C24 Values of variable C24 ³ ³ Ã .Name Name read only 3.2.2.99. ³ ³ Ã .Value Value read only ditto ³ ³ Ã .Unit Unit read only ditto ³ Ã .C25 as for C24 ³ Ã .C26 Values of variable C26 ³ ³ Ã .ActN Number of single values read only ditto ³ ³ Ã .Mean Mean value read only ditto ³ ³ Ã .Std Absolute standard deviation read only ditto ³ ³ Ã .RelStd Relative standard deviation read only ditto ³ Ã .C27 as for C26 ³ "Info", continuation Ã .ActualInfo Current data ³ Ã .Inputs I/O Inputs ³ ³ Ã .Status Line status read only 3.2.2.100. ³ ³ Ã .Change Change of line status read only ditto ³ ³ Ã .Clear Clear change $G ditto ³ Ã .Outputs as for I/O Inputs ³ Ã .Assembly From Assembly ³ ³ Ã .CyclNo Cycle number read only 3.2.2.101. ³ ³ Ã .Counter Assembly counter read only 3.2.2.102. ³ ³ ³ Ã .V Volume counter read only ditto ³ ³ ³ Ã .Clear Clears counter $G ditto ³ ³ Ã .Meas Measured value read only 3.2.2.103. ³ Ã .Titrator From Titrator ³ ³ Ã .CyclNo Cycle number read only 3.2.2.104. ³ ³ Ã .V Volume read only ditto ³ ³ Ã .Meas Measured indicator voltage read only ditto ³ ³ Ã .dVdt Volume drift dV/dt read only ditto ³ ³ Ã .dMeasdt Measured value drift read only ditto

785 DMP Titrino

3.2. Remote control commands

³ ³ Ã .dMeasdV 1st deviation of titration curve read only ditto ³ ³ Ã .ERC ERC from DET read only ditto ³ ³ Ã .T Temp.as secondary meas. read only ditto ³ Ã .MeasPt Entry in measuring point list ³ ³ Ã .Index Index of entry read only 3.2.2.105. ³ ³ Ã .X X coordinate read only ditto ³ ³ Ã .Y Y coordinate read only ditto ³ ³ Ã .Z1 Z1 coordinate read only ditto ³ ³ Ã .Z2 Z2 coordinate read only ditto ³ Ã .EP EP entry ³ ³ Ã .Index Index of entry read only ditto ³ ³ Ã .X X coordinate read only ditto ³ ³ Ã .Y Y coordinate read only ditto ³ Ã .Display Display ³ ³ Ã .L1 Text line 1 up to 32 ASCII char 3.2.2.106. ³ ³ Ã up to line 8 ³ ³ Ã .DelAll Delete display $G ditto ³ Ã .Comport Comport ³ ³ Ã .Number COM where PC is connected read only 3.2.2.107. ³ Ã .Assembly Assembly ³ Ã CycleTime Cycle time read only 3.2.2.108. ³ Ã ExV Volume of Exchange unit read only ditto

785 DMP Titrino

3.2 Remote control commands

&Assembly

Object Description Input range Reference

& Root

Ã Assembly Assembly control

Ã . Bur Buret ³ Ã .Rates Rates ³ ³ Ã .Forward Forward rate ³ ³ ³ Ã .Select Type of rate control digital, analog 3.2.2.109. ³ ³ ³ Ã .Digital Digital rate 0...150, max. ditto ³ ³ Ã .Reverse as for forward rate ³ ³ ³ Ã .Select Type of rate control digital, analog ditto ³ ³ ³ Ã .Digital Digital rate 0...150, max. ditto ³ Ã .Fill Fill $G,$H,$C 3.2.2.110. ³ Ã .ModeDis Dispensing $G,$S,$H,$C 3.2.2.111. ³ ³ Ã .Select Type of dispensing control volume, time ditto ³ ³ Ã .V Volume to be dispensed 0.0001...0.1...9999 ditto ³ ³ Ã .Time Time to dispense 0.25...1...86 400 ditto ³ ³ Ã .VStop Limit volume 0.0001...9999, OFF ditto ³ ³ Ã .AutoFill Filling after each increment ON, OFF ditto ³ Ã .Meas Measuring ³ Ã .Status Measuring ON/OFF ON, OFF 3.2.2.112. ³ Ã .MeasInput Selection of measuring input 1, 2, diff., Ipol, Upol, Temp ditto ³ Ã .Ipol Polarization current 0...1...±127 ditto ³ Ã .Upol Polarization voltage 0...400...±1270 ditto ³ Ã .Outputs I/O outputs ³ Ã .AutoEOD Automatic output of EOD ON, OFF 3.2.2.113. ³ Ã .SetLines Set I/O lines $G ditto ³ ³ Ã .L0 Signal on L0 active,inactive,pulse,OFF ditto ³ ³ Ã up to L13 ³ Ã .ResetLines Reset I/O lines $G ditto ³ Ã .Stirrer Stirrer ON, OFF 3.2.2.114. ³

785 DMP Titrino

3.2. Remote control commands

&Setup

Object Description Input range Reference

& Root

Ã Setup Settings for the operating mode

Ã .Comport Output of automatic info 1,2,1&2 3.2.2.115. Ã .Keycode Send key code ON, OFF 3.2.2.116. Ã .Tree Sending format of path info ³ Ã .Short Short format of path ON, OFF 3.2.2.117. ³ Ã .ChangedOnly Paths of modified nodes only ON, OFF ditto ³ Ã .Trace Message on changed values ON, OFF 3.2.2.118. ³ Ã .Lock Lock key functions ³ Ã .Keyboard Lock all keyboard keys ON, OFF 3.2.2.119. ³ Ã .Config Lock <CONFIG> key ON, OFF ditto ³ Ã .Parameter Lock <PARAM> key ON, OFF ditto ³ Ã .SmplData Lock <SMPL DATA> key ON, OFF ditto ³ Ã .UserMeth Lock functions ³ ³ Ã .Recall Lock “loading” ON, OFF ditto ³ ³ Ã .Store Lock “saving” ON, OFF ditto ³ ³ Ã .Delete Lock “deletion” ON, OFF ditto ³ À .Display Lock display function ON, OFF ditto ³ Ã .Mode Setting waiting intervals ³ Ã .StartWait Waiting time after start ON, OFF 3.2.2.120. ³ Ã .FinWait Waiting time after run ON, OFF ditto ³ Ã .SendMeas Automatic sending of measured values ³ Ã .SendStatus Connect/disconnect sending ON, OFF 3.2.2.121. ³ Ã .Interval Time interval 0.08...4...16200, ditto ³ MPList ³ Ã .Select Selection Assembly, Titrator 3.2.2.122. ³ Ã .Assembly From assembly ³ ³ Ã .CyclNo Cycle number ON, OFF 3.2.2.123. ³ ³ Ã .V Volume ON, OFF ditto ³ ³ Ã .Meas Measured indicator voltage ON, OFF ditto ³ Ã .Titrator From Titrator ³ ³ Ã .CyclNo Cycle number ON, OFF 3.2.2.124. ³ ³ Ã .V Volume ON, OFF ditto ³ ³ Ã .Meas Measured indicator voltage ON, OFF ditto ³ ³ Ã .dVdt Volume drift dV/dt ON, OFF ditto ³ ³ Ã .dMeasdt Measured value drift ON, OFF ditto ³ ³ Ã .dMeasdV 1st deviation of titration curve ON, OFF ditto ³ ³ Ã .ERC ERC from DET ON, OFF ditto ³ ³ Ã .T Temp.as secondary meas. ON, OFF ditto ³

785 DMP Titrino

3.2 Remote control commands

"Setup", continuation

Ã .AutoInfo Automatic message for changes 3.2.2.125. ³ Ã .Status Switch AutoInfo on/off ON, OFF ditto ³ Ã .P When mains is switched on ON, OFF ditto ³ Ã .T Titrator infos ³ ³ Ã .R When “ready” ON, OFF ditto ³ ³ Ã .G When method started ON, OFF ditto ³ ³ Ã .GC When start is initiated ON, OFF ditto ³ ³ Ã .S When stopped ON, OFF ditto ³ ³ Ã .B Begin of method ON, OFF ditto ³ ³ Ã .F End of process ON, OFF ditto ³ ³ Ã .E Error ON, OFF ditto ³ ³ Ã .H When “hold" ON, OFF ditto ³ ³ Ã .C Continue after "hold" ON, OFF ditto ³ ³ Ã .O Conditioning OK ON, OFF ditto ³ ³ Ã .N Conditioning not OK ON, OFF ditto ³ ³ Ã .Re Request after start ON, OFF ditto ³ ³ Ã .Si Silo empty ON, OFF ditto ³ ³ Ã .M Entry in measuring point list ON, OFF ditto ³ ³ Ã .EP Entry in EP list ON, OFF ditto ³ ³ Ã .RC Recalculation of results done ON, OFF ditto ³ Ã .C Comport infos ³ ³ Ã .B1 When COM1 sends a report ON, OFF ditto ³ ³ Ã .R1 When COM1 is ready again ON, OFF ditto ³ ³ Ã .B2 When COM2 sends a report ON, OFF ditto ³ ³ Ã .R2 When COM2 is ready again ON, OFF ditto ³ Ã .I Changing an I/O input ON, OFF ditto ³ Ã .O Changing an I/O output ON, OFF ditto ³ Ã .Graphics Changing the curve output ³ Ã .Grid Grid on curve ON, OFF 3.2.2.126. ³ Ã .Frame Frame on curve ON, OFF ditto ³ Ã .Scale Type of depending axis Full, Auto ditto ³ Ã .Recorder Length of axes ³ ³ Ã .Right Length of meas value axis 0.2...0.5...1.00 ditto ³ ³ Ã .Feed Length of paper drive axis 0.01...0.05...1.00 ditto ³ Ã .PowerOn RESET (power on) $G 3.2.2.127. Ã .Initialise Set default values $G 3.2.2.128. ³ Ã .Select Selection of branch ActMeth,Config,Silo,Calib ³ Assembly,Setup,All ditto Ã .RamInit Initialization of working mem. $G 3.2.2.129. Ã .InstrNo Device Identification $G 3.2.2.130.

Ã .Value Input of device identification 8 ASCII characters ditto

785 DMP Titrino

3.2. Remote control commands

&Diagnose

Object Description Input range Reference

& Root

Ã Diagnose Diagnose

Ã .Report Output of adjustment parameters $G 3.2.2.131.

785 DMP Titrino

3.2 Remote control commands

3.2.2 Description of the remote control commands

3.2.2.1. Mode $G, $S, $H, $C Start and stop ($G, $S) or hold of the current method (3.2.2.3) with $H and continue with $C. $G also serves to continue after inquiries of identifications and sample size after the start (see 3.2.2.25) as well as after inquiries of calibration temperature and pH values of buffers (see 3.2.2.41 and 3.2.2.42).

3.2.2.2. Mode.QuickMeas $G, $S Start and stop of a measurement in the basic mode with the parameters (measured quantity, measuring input) of the current method. Corresponds to the <meas/hold> key. In TIP, the measured quantity is selected with &Mode.Parameter.Presel, see 3.2.2.49. With an ongoing measurement, the current mode can be started. This stops the measurement automatically.

785 DMP Titrino

3.2.2.3. Mode.Select DET, MET, SET, MEAS, CAL, TIP Mode.DETQuantity pH, U, Ipol, Upol Mode.METQuantity pH, U, Ipol, Upol Mode.SETQuantity pH, U, Ipol, Upol Mode.MEASQuantity pH, U, Ipol, Upol, T

Selection of the standard mode. Mode and the measured quantity belong to the complete selection. If a method is selected from the method memory, the nodes &Mode.Select and &Mode.XXXQuantity are overwritten with mode and measured quantity of the corresponding user method.

3.2.2.4. Mode.Name read only

Name of the current method in the working memory. $Q sends 8 ASCII characters. Standard methods carry the name ********. The node can be set read + write, see 3.2.2.95.

3.2.2.5. Mode.Def.Formulas.1.Formula EPX, CXX, RSX, +, -, *, /, (, ) Mode.Def.Formulas.1.TextRS up to 8 ASCII characters Mode.Def.Formulas.1.Decimal 0...2...5 Mode.Def.Formulas.1.Unit up to 6 ASCII characters Mode.Def.Formulas.1.Limits ON, OFF

Mode.Def.Formulas.1.LoLim 0...±999 999 Mode.Def.Formulas.1.UpLim 0...±999 999

Mode.Def.Formulas.1.Output active, pulse, OFF Mode.Def.Formulas.2.Formula etc. up to .9

Entry of formulas. Rules for formula entry, see page 38. Example: "(EP2-EP1)*C01/C00" In addition to the formula, a text for result output, the number of decimal places and a unit for the result output can be selected. "No unit" is selected with the blank string.

Metrohm 785DMP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual