Metrohm 799 GPT Titrino User manual

799 GPT Titrino, Short instructions for use
CH-9101 Herisau/Switzerland
E-Mail [email protected]
Internet www.metrohm.com
799 GPT Titrino
Short Instructions for Use
8.799.1023 04.2002 / pkl

799 GPT Titrino, Short instructions for Use
Table of contents
1. Getting started .........................................................................1
1.1 Principle of data input ...........................................................2
1.2 Development of a method.....................................................3
1.3 Storing methods....................................................................7
1.4 Working with several dosing units ...................................... 10
2. Titration, dosing and measuring modes...............................12
2.1 Survey of the titration modes .............................................. 12
2.2 Mode DET and MET, parameters .......................................14
2.3 Mode SET, parameters .......................................................15
2.4 Mode KFT, parameters........................................................16
2.5 Mode STAT, parameters .....................................................17
2.6 Mode DOS, parameters ......................................................19
2.7 Mode DOC, parameters ......................................................20
2.8 Mode MEAS and CAL, parameters ..................................... 21
2.9 Mode TIP, parameters......................................................... 22
2.10 Calculations .......................................................................23
3. Other functions ......................................................................25
3.1 Method memory ..................................................................25
3.2 User name, key <user> ..................................................... 27
3.3 Sample data, keys <smpl data> and <silo>....................27
3.4 Configuration, key <configuration>...................................28
Index...........................................................................................30

1.1 Principle of data input
799 GPT Titrino: Getting started
1
Summary of the most important signs
Signs in the Titrino dialog:
> Title of inquiry groups. Press <ENTER> to go to
the inquiries.
: Values can be chosen with keys <←> or <→>.
Signs that are used in the instructions for use
<> sign for "key", e.g. <ENTER> or <←>.

1.1 Principle of data input
799 GPT Titrino: Getting started
2
1 Getting started
This is a step by step introduction into the operation of
the Titrino.
You learn how to go round with the Titrino and you get
an idea of the possibilities that the Titrino offers you.
1.1 Principle of data input
<CONFIG>
<↓>
<ENTER>
<←> or <→>
<ENTER>
2 x <QUIT>
Press <STOP> if the Titrino is busy. It is now in the inac-
tive standby state.
Then press the <CONFIG> key.
The first line indicates the "path", which means the place
where you are right now: You pressed the <CONFIG>
key and are now in the "configuration" inquiries.
In the next lines you find a list of the inquiry groups of
key <CONFIG>. They are all marked with ">". This sign
means that you get to the inquiries with <ENTER>.
The inquiry group ">monitoring" is inverted, which
means that the cursor is placed on this line. You can
move the cursor up and down with the <↑> and <↓>
keys.
Set the cursor to ">auxiliaries" and open this inquiry
group with <ENTER>.
The arrow in the lower right corner means that there are
more inquiries. They appear if you move the cursor be-
low.
Set the cursor to the inquiry "dialog:". You may select a
different dialog language with the keys <←> or <→>
(Key <→> "turns" forward, <←> backward).
Select any language and press <ENTER>.
Note the sign ":" in the text "dialog:". If you see this sign
in the dialog text you can always use the <←> or <→>
keys to select a value.
Readjust the language to "english" again.
Quit the inquiries in the <CONFIG> key pressing
<QUIT> twice.
configuration
>auxiliaries
dialog: english
date 2002-04-08
time 15:23
run number 0
auto start OFF
start delay 0 s ↓
configuration
>monitoring
>peripheral units
>auxiliaries
>RS232 settings COM1
>RS232 settings COM2
>common variables
>prep.dosing elements

1.2 Development of a method
799 GPT Titrino: Getting started
3
1.2 Development of a method
You learn how to elaborate a method .
First you select a titration mode. A general survey of the
different titration modes is given on page 12.
Selecting the mode
<MODE>
<←> or <→>
<ENTER>
<START>
<STOP>
Press the <MODE> key.
Select the mode DET with <←> or <→> keys, press
<ENTER>, select the measured quantity "pH" and press
<ENTER> again.
DET stands for Dynamic Equivalence point Titration. In
this titration, the size of the volume increments vary as a
function of the slope of the titration curve. After each
increment, a preset measured value drift (or time) is
awaited until the next increment is added (so called
"equilibrium titration"). After the titration, the equivalence
points are evaluated automatically.
You are now ready to titrate. You titrate with the internal
dosing unit D0, i.e. the Exchange Unit on the Titrino.
Mount an Exchange Unit with NaOH, c=0.1 mol/L on the
Titrino.
Plug a combined pH glass electrode into measuring
input ("Ind I").
Pipette 2 mL HCI, c =0.1 mol/L into the titration vessel,
dilute it with ca. 20 mL. dist. water, adjust the stirrer and
press <START>.
During the titration the titration curve is displayed. To the
left of the curve, the current measured values (pH and
volume) are displayed.
As soon as the Titrino has found an equivalence point, it
will also be shown the left.
Let the titration continue for a short while, e.g. until ca.
pH=11.50. Now stop it with <STOP>.
The equivalence point is displayed.
DET pH D0a ********
mode
mode: DET
measured quantity: pH
DET pH D0a ********
EP1 2.083 ml pH 7.64

1.2 Development of a method
799 GPT Titrino: Getting started
4
Calculation of the result, entry of a formula
<DEF>
<ENTER>
<1>
<ENTER>
2 x <QUIT>
You may calculate results with the equivalence point.
Press <DEF>.
Press <ENTER> to move on to the formula entry. The
display now shows "RS? ".
Press "1", i.e. the first formula.
You can now enter a formula. Note here the inscriptions
in the right corner of the keys and the numbers.
You can use mathematical operations, parentheses as
well as the following symbols:
EP#EP’s with 1-digit number, e.g. EP1.
RS#Previously calculated results, e.g. RS1 in the sec-
ond formula.
C## Calculation values, e.g. C01. C00 is reserved for
the sample size. The meaning of the different cal-
culation values is given on page 24.
Calculate the content of your hydrochloric acid in g/L:
RS1=EP1*C01*C02/C00
EP*conc(titrant)*molar mass/sample size
If you made a typing mistake, you can delete the sym-
bols one by one with <CLEAR>.
Confirm the formula with <ENTER>.
You may enter a text for the result output, see page 7.
Enter the desired number of decimal places for the re-
sult.
Select the unit g/I with <←> or <→> or enter a text as
unit.
Quit the formula entry by pressing <QUIT> twice.
Instead of the equivalence point, the calculates result will
be displayed. It is 0 because the calculation values C01
and C02 are still zero.
Entry of the calculation constants
<C-FMLA>
Press <C-FMLA>, to enter the calculation values.
The constants which have been used in the formula are
requested:
C01: Concentration of your titrant = 0.1 mol/L
C02: Molar mass of HCI = 36.47 g/mol
The result is recalculated.
def
>formula
RS1=EP1*C01*C02/C00
RS1 text RS1
RS1 decimal places 2
RS1 unit: g/l
RS1 limit control: OFF
def
>formula
RS1=EP1*C01*C02/C00
def
>formula
>silo calculations
>common variables
>report
>mean
>temporary variables
C-fmla
C01 0.0
C02 0.0

1.2 Development of a method
799 GPT Titrino: Getting started
5
Entry of the sample size
<SMPL DATA>
You also need the sample size for the calculation of your
result. Enter it with the <SMPL DATA> key:
Place the cursor to "smpl size" and enter 2.
Select the unit "ml" for the sample size using the <←>
or <→> keys and confirm with <ENTER>.
The result is recalculated.
Viewing the titration curve
<←> or <→>
<←> or <→>
You can view the titration curve after the titration using
the <←> or <→> keys.
With the <↑> and <↓> you can trace the curve. To the
left the measured values of the current point are dis-
played. On the first line you will find the index of the
point.
At the equivalence point, you find its ERC (see Instruc-
tions for Use page 21, 22) and its volume.
Quit the curve display with <←> or <→> key.
Selection of the automatic report output
<DEF>
<↓>
<ENTER>
<←> or <→>
<ENTER>
2 x <QUIT>
If you have a printer connected, you can select the re-
port blocks to be printed out automatically at the end of
the titration.
Press <DEF> and place the cursor to ">report".
Press <ENTER> to define the report output.
(If you have your printer connected to COM2 press
<ENTER> once again.)
Select the individual report blocks with the <←> or
<→> keys. Use a ";" as delimiter between the report
blocks. If you wish to print out a curve and a full result
report, set "curve;full".
Confirm the entry with <ENTER> and quit the inquiries
with <QUIT>
smpl data
id#1 or C21
id#2 or C22
id#3 or C23
smpl size 1.0 g
smpl unit: g
def
>report
report COM1:curve;full

1.2 Development of a method
799 GPT Titrino: Getting started
6
Press <PRINT> <REPORTS> <ENTER> to print your re-
ports. Your printout will look as follows:
Identification of report type (cu = curve)
Start volume and method identification
Scaling of curve axis
Instrument type with identification and pro-
gram version
Initial pH
Volume and pH value of EP1
Calculated result
Entry of a stop criterion
<PARAM>
<↓>
<ENTER>
Entries <ENTER>
2 x <QUIT>
You don't want to stop your titration manually each time.
Let us enter an automatic stop criterion.
Press <PARAM> and place the cursor to ">stop condi-
tions". Press <ENTER> to go to this inquiry group.
The absolute stop volume. It can be used as a safety
volume to prevent overflow of the titration vessel.
Enter a value for the stop volume that appears suitable
for your titration vessel.
Set the pH value, e.g. 11.5 as stop criterion.
If several stop criteria have been set, the one that is
reached first, applies.
Confirm the input with <ENTER> and quit the inquiry
with <QUIT>.
Try another titration with this method.
parameters
>stop conditions
stop V: abs.
stop V 99.99 ml
stop pH aus
stop EP 9
filling rate max. ml/min
'cu
799 GPT Titrino 01102 799.0010
date 2002-04-08 time 09:07 1
Start V 0.000 ml DET pH ********
1.0 ml/div dpH=2.0/div
−−−−−−−−−−−−−−−−
'fr
799 GPT Titrino 01102 799.0010
date 2002-04-08 time 09:07 1
pH(init) 2.88 DET pH ********
smpl size 2 ml
EP1 2.083 ml 7.64
RS1 3.80 g/l
manual stop
−−−−−−−−−−−−−−−−

1.3 Storing methods
799 GPT Titrino: Getting started
7
1.3 Storing methods
You learn how to operate the method memories.
The Titrino offers 2 types of method memories:
• Internal method memory, key <USER METH>
• External method memory on the card, key <CARD>
Storing a method in the internal method memory
<USER METH>
<↓>
<ENTER>
Entries <ENTER>
<QUIT>
<ENTER>
Press <USER METH>, place the cursor to ">store
method" and press <ENTER>.
Press <CLEAR> to delete the existing method name
(********).
Open text entry with key <ABC>.
A field with letters and symbols appears. You can select
a letter with the cursor keys and confirm this letter with
<ENTER>. The letter then appears in the input field of
the method name.
Enter an identification for your method, e.g. HCl:
If you made a typing error you can delete the characters
one by one with <CLEAR>.
Quit the text input with <QUIT> when you completed
your name.
Confirm the name with <ENTER>. The method will be
stored in the internal method memory.
The method runs now under the identifier "HCl".
A list of contents of the method memory can be printed
with the key sequence <PRINT><USER
METH><ENTER>.
'um
799 GPT Titrino 01102 799.0010
date 2002-04-08 time 07:49
user methods bytes
DET pH Titer_pH D0 190
DET U Blank D0 178
DET U Chloride D0 234
MET U Diazo D0 208
MET Ipol Br-Index D0 226
DET U Perox.No D0 172
DET pH HCl D0 108
remaining bytes 98684
------------
mode and
meas.quantity
method
name
dosing unit, that
is being used
user methods
>store method
method name:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
µ°!"#$&'()*+,-./ 0123456789

1.3 Storing methods
799 GPT Titrino: Getting started
8
Recall a method from the internal method memory
<USER METH>
<ENTER>
<←> or <→>
<ENTER>
Stored methods can always be recalled into the working
memory.
Press <USER METH> and <ENTER> to go to ">recall
method".
You can select a method with <←> or <→> or enter its
name directly.
Recall the method with <ENTER>.
The method is now ready to work.
Method memory on the card
The card offers additional memory space for methods. It
may be used e.g.
• as a backup-medium for the internal method memory
• as an extended method memory, where the methods
can be organized in various directories
• if every user wants to store his methods on his own
card
• for exchanging methods between various laborato-
ries, apparatus, and/or users
The card has a battery, which should be exchanged pe-
riodically, see page 91 of the Instructions for Use.
As an example, perform a backup from the internal
method memory to the card. If the card is not formatted,
see page 91 of the Instructions for Use.
<CARD>
<↓>
<ENTER>
<←> or <→>
<ENTER>
Press <CARD> and place the cursor to ">backup".
Confirm this function with the key <ENTER> and give a
name for the backup directory.
If you wish to overwrite an existing directory, choose a
name with <←> or <→>. Then press <ENTER>
The backup will be effected.
user methods
>recall method
method name: ********
user meth.
>backup
dir.name: Backup

1.3 Storing methods
799 GPT Titrino: Getting started
9
Printing a list of contents of the card
The following card reports can be printed:
'ad
799 GPT Titrino 01102 799.0010
date 2002-04-08 time 07:49
card label: Appl.799 dev.label:
KF Titr. bytes
KFT Ipol TarTiter D0 150
KFT Ipol H2OTiter D0 150
KFT Ipol Blank_KF D0 132
KFT Ipol KF-Blank D0 206
KFT Ipol KF D0 170
remaining bytes 121892
------------
Current directory
<PRINT><CARD><ENTER>
name of the current
directory
remaining bytes on
this card
'cd
799 GPT Titrino 01102 799.0010
date 2002-04-08 time 07:50
card label: Appl.799 dev.label:
directory: user meth.
Acid Tit.NaOH Tit.HCl
W-Liquor
bytes: 620
directory: KF Titr.
TarTiter H2OTiter Blank_KF
KF-Blank KF
bytes: 808
remaining bytes on card: 121892
------------
Contents of the whole card
<PRINT><←> or <→><ENTER>
Press <←> or <→> repeatedly until
"mem card" appears in the display.
bytes that are being used in
the directory "user meth."
methods in this direc-
tory
the directory "KF Titr." con-
tains 5 methods

1.4 Working with several dosing units
799 GPT Titrino: Getting started
10
1.4 Working with several dosing units
Here you will learn how to work with several dosing units.
Several dosing units can be used
• if a working station will be permanently installed for
specific analysis, e.g. having a dosing unit specially
prepared for Karl Fisher titrations
• if several titrations are being carried out in the same
sample. The linking of various methods is possible
with TIP (Titration Procedure), see page 85 of the In-
structions for Use.
• for addition of auxiliary solutions
Selection of the dosing unit in the titration method
The dosing unit is selected in the method. The method
runs always with the selected dosing unit.
Connect the dosing unit D1 and arm it with an Exchange
Unit (the Dosino with a Dosing Unit, resp.).
<PARAM>
<ENTER>
<↓>
<←> or <→>
<ENTER>
2 x <QUIT>
Recall the method "HCl" from the user memory: Press
<USER METH>, then <ENTER>.
Select the method name "HCl" with the keys <←> or
<→> and recall the method with <ENTER>.
The dosing unit of this method is D0, i.e. the Titrino itself.
To change the dosing unit, press <PARAM>, then
<ENTER>. You are now in the inquiry group ">titration
parameters".
Place the cursor on "dos.element:".
Choose the dosing unit with keys <←> or <→>:
internal D0: Dosing unit of the Titrino
external D1: External dosing unit, connected to 1 or 2.
Choose e.g. "external D1", confirm the input with <EN-
TER> and quit with the key <QUIT>.
The display shows now e.g. "DET pH D1 HCl". D1
means, that in this method the external dosing unit D1 is
being used.
Start the method.
After the titration "D1a" appears in the display. "a" means
"active", the dosing unit D1 is now active.
DET pH D1 HCl
parameters
>titration parameters
dos.rate. max. ml/min
signal drift 50 mV/min
equilibr.time 26 s
start V: OFF
pause 0 s
dos.element: internal D0

1.4 Working with several dosing units
799 GPT Titrino: Getting started
11
Manual dosing
• to prepare an Exchange Unit (or Dosing Unit, resp.)
• for quick dosing
If you press the key <DOS>, the dosing unit from the
method is working. This dosing unit appears in the dis-
play.
If you wish to dose with another dosing unit, use the key
<PREP> to select the dosing unit and press <DOS> to
dose.
<PREP>
<PREP>
<DOS>, <STOP/FILL>
<QUIT>
Press <PREP>. In the display appears "inter-
nal D0 prep", i.e. the dosing unit of the Titrino has been
selected.
Press <PREP> again. In the display appears "exter-
nal D1: prep".
Press the key <DOS> on the Titrino: The external dos-
ing unit D1 doses. If you press the key <STOP/FILL> on
the Titrino, it will fill again.
With <START>, the function "prep" is started. This pre-
pares the dosing units. (The parameters for "prep" are
under the key <CONFIG>, in the group ">prep.dosing
elements").
Attention: With the function "prep", liquid will be ex-
pelled!
If the dosing unit D1 is a Dosino, you can empty the dos-
ing unit completely (e.g. for cleaning). Choose the func-
tion "empty" with the key <←> or <→> and start with
<START>.
Attention: With the function "empty", liquid will be ex-
pelled!
Quit the selection of dosing units with <QUIT>.
internal D0 prep

2.1 Survey of the titration modes
799 GPT Titrino: Titration, dosing and measuring modes
12
2 Titration, dosing and measuring modes
This chapter gives you a survey over the titration, dosing and
measuring modes. You will find the parameters of all modes.
The standard values are printed in bold face in the following
tables.
2.1 Survey of the titration modes
DET
Dynamic Equivalence point Titra-
tion
MET
Monotonic Equivalence point Titra-
tion
Titration
Reagent feeding:
Variable volume increments, depend-
ing on the slope of the curve.
Drift controlled ("equilibrium titration")
and/or
after a fixed equilibration time.
Reagent feeding:
Constant volume increments, inde-
pendent of the slope of the curve.
Drift controlled ("equilibrium titration")
and/or
after a fixed equilibration time.
Evaluation
The evaluation of EP' s is based on
the zero crossing of the second de-
rivative with a Metrohm correction for
the distortion of the curve from super-
imposed jumps. Can be combined
with selectable recognition criteria.
Recognition criteria:
as for MET
The evaluation of EP's is based on
the Fortuin interpolation.
Recognition criteria:
all EP's
only the last EP
only the greatest EP
EP windows
Applications
Suitable titration mode for most prob-
lems. Specially recommended if
jumps lie very close together and for
very flat jumps.
Note: The reagent feeding algorithm
is based on measured data. The
curve should therefore not deviate
markedly from S-shape.
For
• slow titration reactions (diazota-
tions, coupling reactions)
• sluggish electrode response.
V/mL
U/mV
V/mL
U/mV

2.1 Survey of the titration modes
799 GPT Titrino: Titration, dosing and measuring modes
13
If you are looking for more information to the different quanti-
ties, you will find the display text as a keyword in the index of
the Instructions for Use.
SET, KFT
Endpoint Titration
STAT
Holding a measured value
DOC
Controlled dosing
Titration to preset end-point.
The reagent addition is controlled
such that a preset measured
value is adhered to as accurately
as possible.
The dosing function is controlled
such that a nominal measured
value is adhered to as accurately
as possible. The nominal meas-
ured value follows a linear ramp.
Volume that has been dispensed
up to the endpoint (EPX in mL).
Evaluation of
• rates dV/dt in the set time
windows and the mean rate
over the entire measuring
point list.
• volumes associated with a
preset time (fix V).
• times associated with a
preset fraction of the total
volume (fix time).
The total volume (C41) and the
time needed for dosing (C42)
can be used for calculation.
• For rapid, quantitative deter-
minations in analytical chem-
istry. Requirement: EP of the
titration reaction is known
and does not change during
a determination series.
• If an excess of titrant must be
avoided.
• KFT: Determinations of water
contents.
For
• the controlled dosing to a
preset endpoint in the syn-
thesis laboratory.
• activity determinations, e.g. of
enzymes.
• kinetic investigations (first
order kinetics).
Sweeping a measured value
gradient for reaction formulations
in the syntheses laboratory.
V/mL
U/mV
continuously
Control
range
EP
t/s
V/ml
rate
t/s
U/mV
V/ml
Uset

2.2 Mode DET and MET, parameters
799 GPT Titrino: Titration, dosing and measuring modes
14
2.2 Mode DET and MET, parameters
Display Meaning Input range
>titration parameters
meas.pt.density
min.incr.
[V step]
dos.rate
signal drift
equilibr.time
start V:
start V
factor
dos.rate
pause
dos.element:
meas.input:
temperature
Measuring point density.
Minimum increment for DET.
Volume increment for MET.
Dosing rate for increments.
Drift for measured value acquisition.
Waiting time for value acquisition.
Type of start volume: absolute, relative.
Volume for absolute start volume.
Factor for calculation of relative start
volume: factor * smpl size.
Dosing rate for start volume.
Waiting time, e.g. after start volume.
Selection of the dosing unit.
Measuring input for pH and U.
Titration temperature.
0...4...9
0...10.0...999.9 µL
0...0.10...9.999 mL
0.01...150 mL/min, max.
pH, U:0.5..50..999 mV/min, OFF
0...26...9999 s, OFF
abs., rel., OFF
0...999.99 mL
0...±999 999
0.01...150 mL/min, max.
0...999 999 s
internal D0, external D1/D2
1, 2, diff.
-170.0...25.0...500.0 °C
>stop conditions
stop V:
stop V
factor
stop pH
stop EP
filling rate
Type of stop volume: absolute or relative.
Volume for absolute stop volume.
Factor for calculation of relative stop
volume: factor * smpl size.
Stop at measured value pH, U, I.
Stop after a number of EP's have been
found.
Filling rate after the titration.
abs., rel., OFF
0...99.99...9999.99 mL
0...±999 999
pH: 0.00...±20.00, OFF
U: 0...±2000 mV, OFF
1...9, OFF
0.01...150 mL/min, max.
>statistics
status:
mean n=
res.tab:
delete n=
Status of statistics calculation.
Number n of single values for statistics.
Result table for statistics calculation.
Delete data from sample number n.
ON, OFF
2...20
original, delete n, delete all
1...20
>evaluation
EPC
EP recognition:
fix EP1 at pH
pK/HNP:
Endpoint criterion.
Type of EP recognition: all EP's, only
greatest EP, only last EP, only EP's in
windows, no evaluation. If ”window” is
selected, lower and upper limits of
windows are inquired.
Interpolation of volume at given pH, U, or
I, resp. Up to 9 fix EP's.
Evaluation of pK or half neutralization
potential (HNP).
DET 0...5...200
MET pH: 0.10...0.50...9.99
U: 1...30...999 mV
all, greatest, last, window, OFF
pH: 0.00...±20.00, OFF
U: 0...±2000 mV, OFF
ON, OFF
>preselections
Preselections for the sequence see DOS,
page 19.

2.3 Mode SET, parameters
799 GPT Titrino: Titration, dosing and measuring modes
15
2.3 Mode SET, parameters
Display Meaning Input range
>SET1
EP at pH
dynamics
max.rate
min.rate
stop crit:
stop drift
t(delay)
stop time
Individual parameters for EP1.
Preset EP1 at pH, U, or I, resp.
Distance from EP where constant dosing
stops and controlling begins.
Maximum dosing rate.
Minimum dosing rate.
Type of stop criteria.
Titration stops if stop drift is reached.
Stop if there is no dosing during t(delay).
If t(delay) is ”INF”:
stop after a time.
pH: 0.00...±20.00, OFF
(0...±2000 mV, 0.0...±200.0 µA)
pH: 0.01...20.00, OFF
(1...2000 mV, 0.1...200.0 µA)
0.01...10...150 mL/min, max.
0.01...25.0...9999 µL/min
drift, time
1...20...999 µL/min
0...10...999 s, INF
0...999 999 s, OFF
>SET2 Parameters for EP2. Identical as SET1.
>titration parameters
titr.direction:
pause 1
start V:
start V
factor
dos.rate
pause 2
extr.time
dos.element
meas.input:
temperature
time interval
General titration parameters.
+:Titration to higher pH, voltage, or
current. Auto: Direction is set
automatically.
Waiting time before start volume.
Type of start volume: absolute or relative.
Volume for absolute start volume.
Factor for calculation of relative start
volume: factor * smpl size.
Dosing rate for start volume.
Waiting time after start volume.
Extraction time.
Selection of the dosing unit.
Measuring input for pH and U.
Titration temperature.
Time interval for measured value
acquisition.
+, -, auto
0...999 999 s
abs., rel., OFF
0...999.99 mL
0...±999 999
0.01...150 mL/min, max.
0...999 999 s
0...999 999 s
internal D0,external D1/D2
1, 2, diff.
-170.0...25.0...500.0 °C
1...2...999 999 s
>stop conditions
stop V:
stop V
factor
filling rate
Type of stop volume: absolute or relative.
Volume for absolute stop volume.
Factor for calculation of relative stop
volume: factor * smpl size.
Filling rate after titration.
abs., rel., OFF
0...99.99...9999.99 mL
0...±999 999
0.01...150 mL/min, max.
>statistics Statistics calculation see at DET, page 14.
>preselections
conditioning:
display drift:
drift corr:
drift value
req.ident:
req.smpl size:
limit smpl size:
activate pulse:
Automatic conditioning of titration vessel
Display of drift during conditioning.
Type of drift correction.
Value for manual drift correction.
Request of identifications after start.
Request of sample size after start.
Limit control of sample size.
Pulse output on I/O line L6.
ON, OFF
ON, OFF
auto, man., OFF
0.0...99.9 µL/min
id1, id1 & 2, all, OFF
value, unit, all, OFF
ON, OFF
first, all, cond., OFF

2.4 Mode KFT, parameters
799 GPT Titrino: Titration, dosing and measuring modes
16
2.4 Mode KFT, parameters
Display Meaning Input range
>control parameters
EP at ...
dynamics
max.rate
min.volume incr.
stop crit:
stop drift
t(delay)
stop time
Controlling parameters for KFT.
Endpoint for Ipol.
Endpoint for Upol
Distance from EP where constant dosing
stops and controlling begins.
Maximum dosing rate.
Minimum volume increment
Type of stop criteria.
Titration stops if stop drift is reached.
Stop if there is no dosing during t(delay).
If t(delay) is ”INF”: stop time.
U: -2000 ... 250...2000 mV
I: -200.0... 25.0...200.0 µA
U: 1...100...2000 mV
I: 0.1...10...200.0 µA
0.01...150 mL/min, max.
0.1...9.9 µL, min
drift, time
1...20...999 µL/min
0...10...999 s, INF
0...999 999 s, OFF
>titration parameters
titr.direction:
pause 1
start V:
start V
factor
dos.rate
pause 2
extr.time
dos.element
I(pol)
U(pol)
electrode test:
temperature
time interval
General titration parameters.
+: Titration to higher voltage or current.
auto: Direction is set automatically.
Waiting time before start volume.
Type of start volume: absolute or relative.
Volume for absolute start volume.
Factor for calculation of relative start
volume: factor * smpl size.
Dosing rate for start volume.
Waiting time after start volume.
Extraction time.
Selection of the dosing unit.
Polarization current for Ipol or -
voltage for Upol in 10 mV-intervals.
Performing of electrode test
Titration temperature.
Time interval for measured value
acquisition.
+, -, auto
0...999 999 s
abs., rel., OFF
0...999.99 mL
0...±999 999
0.01...150 mL/min, max.
0...999 999 s
0...999 999 s
internal D0, external D1/D2
-127...50...127 µA or.
-1270...400...1270 mV
ON, OFF
-170.0...25.0...500.0 °C
1...2...999 999 s
>stop conditions
stop V:
stop V
factor
filling rate
Type of stop volume: absolute or relative.
Volume for absolute stop volume.
Factor for calculation of relative stop
volume: factor * smpl size.
Filling rate after the titration.
abs., rel., OFF
0...99.99...9999.99 mL
0...±999 999
0.01...150 mL/min, max.
>statistics Statistics calculation see at DET, page 14.
>preselections
conditioning:
display drift:
drift corr:
drift value
req.ident:
req.smpl size:
limit smpl size:
oven:
activate pulse:
Automatic conditioning of titration vessel.
Display of drift during conditioning.
Type of drift correction.
Value for manual drift correction.
Request of identifications after start.
Request of sample size after start.
Limit control of sample size.
RS-COM of Titrino where Oven is
connected.
Pulse output on I/O line L6.
ON, OFF
ON, OFF
auto, man., OFF
0.0...99.9 mL/min
id1, id1 & 2, all, OFF
value, unit, all, OFF
ON, OFF
COM1, COM2, OFF
first, all, cond., OFF

2.5 Mode STAT, parameters
799 GPT Titrino: Titration, dosing and measuring modes
17
2.5 Mode STAT, parameters
Display Meaning Input range
>control parameters
EP at pH
dynamics
max.rate
min.rate
Endpoint, control point: This value is kept
constant.
Distance from EP where constant dosing
stops and controlling begins.
Maximum dosing rate
Minimum dosing rate
pH: 0.00...±20.00, OFF
(0...±2000 mV, 0.0...±200.0 µA)
pH: 0.01...1...20.00, OFF
(1..60..2000 mV, 0.1.6..200.0µA)
0.01...10...150 mL/min, max.
0.01...25.0...9999 µL/min
>titration parameters
start V:
start V
factor
dos.rate
pause
start time
start pH
start rate
time interval
titr.direction:
dos.element
meas.input:
temperature
General titration parameters.
Type of start volume: absolute or relative.
Volume for absolute start volume.
Factor of relative start volume.
Dosing rate for start volume.
Waiting time, after start volume.
Start time for data acquisition.
Start measured value for data acquisition.
Start rate for data acquisition.
Time interval for data acquisition.
+: Titration to higher pH, U or I. auto:
Direction is set automatically.
Selection of dosing unit.
Measuring input for pH and U.
Temperature.
abs., rel., OFF
0...999.99 mL
0...±999 999
0.01...150 mL/min, max.
0...999 999 s
0...999 999 s
pH: 0.00...±20.00, OFF
(0...±2000 mV, 0.0...±200.0 µA)
0.01...150 mL/min, OFF
1...2...999 999 s
+, -, auto
internal D0, external D1/D2
1, 2, diff.
-170.0...25.0...500.0 °C
>stop conditions
stop time:
stop time
factor
t(delta)
t(delay)
stop V:
stop V
factor
stop rate
filling rate
Type of stop time: absolute or relative.
Time for absolute stop time.
Factor for calculation of relative stop time.
Time after EP is once reached.
Time after last dosing step.
Type of stop volume: absolute or relative.
Volume for absolute stop volume.
Factor of relative stop volume.
Stop when the dosing rate is smaller
than..
Filling rate.
abs., rel., delta, delay, OFF
0...999 999 s
0...±999 999
0...999 999 s
0...999 999 s
abs., rel., OFF
0...99.99...9999.99 mL
0...±999 999
0.01...150 mL/min, OFF
0.01...150 mL/min, max.
>statistics Statistics calculation see at DET, page 14.
>evaluation
low lim.
up lim.
fix V1
fix time 1
Evaluation of dosing rates within
programmed time windows (→C8X).
Max. 9 windows.
Interpolation of volumes at fixed times (→
C5X). Up to 9 fix V's.
Interpolation of times at fixed volume
rations of the end volume (→C6X). Up to
9 fix times.
0...999 999 s, OFF
0...999 999 s, OFF
0...999 999 s, OFF
0.01...1, OFF

2.5 Mode STAT, parameters
799 GPT Titrino: Titration, dosing and measuring modes
18
Display Meaning Input range
>monitoring
meas.val:
low lim.pH
up lim.pH
action:
rate:
temperature:
assign output L10:
violated limit:
output L10:
assign output L1X:
Monitoring of measured values.
Limits for measured values.
Action, if a limit is exceeded. End: Abort.
Wait: Dosing interrupted, until measured
value is within limits again, then continue.
Monitoring of rate (same actions as
above).
Monitoring of temperature (same actions
as above).
Assignment of output L10 to monitored
quantity.
Assignment of output to violated limit.
Set a signal when limits are violated.
For lines L11, L12, and L13 as for L10.
ON, OFF
pH: 0.00...±20.00
(0...±2000 mV, 0.0...±200.0 µA)
end, hold, wait, none
ON, OFF
ON, OFF
meas, temp, rate, all, none
any, upper, lower
active, pulse
>preselections
req.ident:
req.smpl size:
limit smpl size:
display rate:
activate pulse:
Request of identifications after start.
Request of sample size after start.
Limit control of sample size.
Display of rate.
Pulse output on I/O line L6.
id1, id1 & 2, all, OFF
Value, unit, all, OFF
ON, OFF
ON, OFF
ON, OFF