Metrohm 838 User Manual
838 Advanced Sample Processor
Manual
8.838.1013
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
info@metrohm.com
www.metrohm.com
838 Advanced Sample Processor
8.838.1013
Manual
09.2005 dm
Teachware
Metrohm AG
CH-9100 Herisau
teachware@metrohm.com
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been
checked with great care, errors cannot be entirely excluded. Should you
notice any mistakes please send us your comments using the address
given above.
Documentation in additional languages can be found on
http://documents.metrohm.com.
Table of Contents
1 Introduction 1
1.1 Information about these Instructions for Use..................................2
1.1.1 Note............................................................................................................2
1.1.2 Notation and pictograms ...........................................................................2
2 Operation 3
2.1 Operating principles..........................................................................3
2.1.1 Display........................................................................................................3
2.1.2 Keypad.......................................................................................................4
2.1.3 The keys .....................................................................................................5
2.1.4 Instrument dialog .....................................................................................11
2.1.5 Data input.................................................................................................13
2.1.6 Text input..................................................................................................14
2.2 Configuration .................................................................................. 16
2.2.1 Miscellaneous ..........................................................................................16
2.2.2 Tower settings..........................................................................................18
2.2.3 Rackdefinitionen ......................................................................................20
2.2.4 Dosing units .............................................................................................23
2.2.5 RS232 settings.........................................................................................24
2.3 Composition of a method .............................................................. 25
2.3.1 Run sequences and method parameters................................................25
2.3.2 Sample Processor settings......................................................................27
2.3.3 Stirrer settings ..........................................................................................28
2.3.4 Dosing drive settings ...............................................................................29
2.3.5 Behavior during timeout...........................................................................30
2.3.6 Manual stop options ................................................................................31
2.3.7 Programming of sequences ....................................................................32
2.3.8 LEARN mode ...........................................................................................32
2.3.9 TRACE-Funktion.......................................................................................33
2.4 Commands...................................................................................... 34
2.4.1 Sample Processor commands ................................................................34
2.4.2 Switching components ............................................................................38
2.4.3 Dosing drive control.................................................................................39
2.4.4 Communication commands ....................................................................41
2.4.5 Auxiliary commands.................................................................................45
2.5 Managing methods......................................................................... 46
2.5.1 User-defined methods .............................................................................46
2.5.2 POWERUP method..................................................................................47
2.6 Run control ..................................................................................... 48
Metrohm 838 Advanced Sample Processor III
2.7 Manual operation............................................................................ 49
2.7.1 Turning the sample rack / Positioning the samples................................49
2.7.2 Moving the lift...........................................................................................49
2.7.3 Setting the sample position .....................................................................50
2.7.4 Pump control ...........................................................................................50
2.7.5 Switching the stirrers................................................................................50
2.7.6 Dosing device control..............................................................................51
2.7.7 Display interface signals.......................................................................... 51
2.7.8 Interface control .......................................................................................52
2.7.9 External pump control..............................................................................53
2.7.10 Switching the injection valve....................................................................53
2.7.11 Rack initialization .....................................................................................53
2.8 Dosing and liquid handling............................................................ 54
2.8.1 Dosimats and Dosinos ............................................................................54
2.8.2 Liquid handling functions ........................................................................59
2.8.3 The DOS command.................................................................................60
2.8.4 Pictograms...............................................................................................60
2.8.5 Liquid handling functions in detail........................................................... 61
3 Appendix 64
3.1 Sample racks .................................................................................. 64
3.1.1 Metrohm standard sample racks ............................................................64
3.1.2 Magnet codes..........................................................................................65
3.1.3 Rack data.................................................................................................65
3.2 The Remote interface ..................................................................... 68
3.2.1 Output lines..............................................................................................68
3.2.2 Input lines.................................................................................................68
3.2.3 SCN command ........................................................................................69
3.2.4 CTL-Befehl ...............................................................................................69
3.3 LEARN mode................................................................................... 70
3.3.1 Setting lift and robotic arm positions.......................................................70
3.3.2 Rack adjustment......................................................................................71
3.3.3 Parametrizing sequence commands ......................................................71
3.4 Disabling keypad functions ........................................................... 72
3.4.1 Disable whole keypad .............................................................................72
3.4.2 Disable configuration...............................................................................72
3.4.3 Disable parameter ...................................................................................72
3.4.4 Disable method storage functions ..........................................................73
3.4.5 Disable display ........................................................................................73
3.5 786 Swing Head settings ............................................................... 74
3.6 Error messages .............................................................................. 76
3.7 Initializing the working memory .................................................... 78
3.8 Standard methods .......................................................................... 80
IV Metrohm 838 Advanced Sample Processor
3.8.1 Method "LAT"............................................................................................81
3.8.2 Methode "MLAT".......................................................................................83
3.8.3 Method "DT" .............................................................................................86
3.8.4 Method "VA"..............................................................................................88
4 Index 90
List of Illustrations
Fig. 1 Key pad....................................................................................................4
Fig. 2 Dialog arrangement ...............................................................................12
Fig. 3 Selection list...........................................................................................13
Fig. 4 Text input ...............................................................................................15
Fig. 5 Sample series ........................................................................................26
Fig. 6 Dosino 800 with Dosing units ................................................................54
Fig. 7 Dosing unit from below..........................................................................55
Fig. 8 Dosing unit - ports ................................................................................. 59
Metrohm 838 Advanced Sample Processor V
1.1 Information about these Instructions for Use
1 Introduction
Like all Metrohm Sample Processors, the 838 Advanced Sample Processor can be operated as stand-alone device or be controlled entirely
by a PC software (e. g. «IC Net»). In the latter case the particular functions of the instrument are invoked directly by the PC software. The
keypad of the 838 Advanced Sample Processor therefore is not necessary.
In a stand-alone system with a keypad connected, the 838 Advanced
Sample Processor can execute methods containing command sequences automatically. These sequences may be programmed freely in
a wide range. The Sample Processor can even be operated manually to
prepare a sample series.
«IC Net 2.3» (Service release 3 or later) sets a parameter in the 838
Advanced Sample Processor, which forces the Sample Processor to
reset all of it's device settings and delete all stored methods on startup (RAM init). This behavior is intended and necessary for controlling
the Sample processor with «IC Net».
If a 838 Advanced Sample Processor is to be used as a stand-alone
system with keypad control and instrument methods, which previously
was controlled by «IC Net 2.3», the setting mentioned above has to be
switched off beforehand. In «IC Net» uncheck the check box "Autoinit"
which is accessible after right-clicking the Sample Processor icon in
the working system.
The 838 Advanced Sample Processor is delivered with four standard
methods for voltammetric analysis. These can be used in the connection with the Metrohm 797 VA Computrace.
Operating and programming of the 838 Advanced Sample Processor is
described in this Instructions for Use.
Metrohm 838 Advanced Sample Processor, Introduction 1
1.1 Information about these Instructions for Use
1.1 Information about these Instructions for Use
1.1.1 Note
Please read through these Instructions for Use carefully before you
start to use this instrument. The instructions contain information and
warnings that must be observed by the user in order to guarantee the
safe use of the instrument.
1.1.2 Notation and pictograms
The following notation and pictograms are used in these Instructions for
Use:
Location Menu item, parameter or input value
<OK> button, key
Danger
This symbol indicates a possible risk of death or injury to
the user if the instructions are not followed correctly.
Warning
This symbol indicates a possible risk of damage to the instruments or their components if the instructions are not followed correctly.
Attention
This symbol indicates important information. Read the information provided before you continue.
Remarks
This symbol indicates additional information and tips.
2 Metrohm 838 Advanced Sample Processor, Introduction
2.1 Operating principles
2 Operation
As well as the basic functions that can be carried out manually, this section also described the configuration of the Advanced Sample Processor. Detailed descriptions of the way that run sequences are created and
how methods are managed are given.
2.1 Operating principles
2.1.1 Display
The keypad (SC Controller) display consists of two lines each with 24
characters.
The first line is used as the title line and shows the current method together with the number of processed samples. In the editing mode the
menu titles are shown here.
The second line is used as the status line and shows specific activities
that depend on the operating condition. It is used as the input line in the
editing mode.
Normal state
Method name
Pump status
Sample counter
******** counter 1/12
PUMP--++STIR+---- ready
Stirrer status
Method sequence
Running sequence
******** counter 2/12
START 03 WAIT 11 s
Current command with line number
Editing mode
Menu line or command
Menu title
>Sample sequence
1 MOVE 1 : sample
st
1
parameter
Instrument status
Parameter
nd
2
parameter
Metrohm 838 Advanced Sample Processor, Operation 3
2.1 Operating principles
2.1.2 Keypad
Controller
******** counter 0/112
PUMP-- STIR- ready
FILL
INJECT LEAR N
VALVE
CONFIG PAR A M
HOME END
NEXT
USER
METHOD
PREV
RESET
SAM PLE MOVE LIFT
PUMP
SCA N CTRL WAIT
ST IR DOS
Me t r o h m
IN SE R T SELECT
DELETE
6.2142.050
QUIT ENTER
CLEAR
EXT
P
LEARN
HOLD
VALVE
+
STOP
<
RACK
-
START
>
Fig. 1 Key pad
Below the 2-line display there are three LEDs. The two LEDs 'FILL' and
'INJECT' indicate the current position of the injection valve. The LED
'LEARN' lights up when the learn mode is activated.
Most keys have two functions, depending on whether the Sample Processor is in the normal operating mode or in the editing mode.
Selection menus can be accessed with the upper row of keys (<CON-
FIG>, <PARAM>, <USER METHOD>). The other keys on the lefthand side of the keypad are used for navigation in the menus or for al-
4 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
2.1.3 The keys
The menu keys
CONFIG
PARAM
tering parameters. For entering parameters the numerical block on the
right-hand side of the keypad is also available.
The lowest row of keys (<HOLD>, <STOP>, <START>) are used
for the direct control of a method sequence.
If the Sample Processor is integrated in a PC-controlled automation
system and is entirely controlled via the RS232 interface, it is possible
to operate the instrument without the keypad.
The <CONFIG> key opens the selection menu for the configuration
of the Sample Processor.
The <PARAM> key opens the selection menu for editing the run sequences and method parameters.
The <User Method> key opens the selection menu for opening, sav-
USER
METHOD
ing and deleting default or user-defined methods.
Lift operation and sample positioning keys
With the <> and <> keys the lift can be moved up and down
respectively. The lowest possible lift position is defined by the configuration parameter '
max. stroke path'.
In the editing mode the arrow keys <> and <> are used
for navigation in the particular menu or submenu.
With the <HOME> key the lift is returned to the rest position (0 mm),
HOME
END
i.e. to the uppermost stop.
<END> moves the lift to the predefined working position (see p. 20).
In the editing mode the <HOME> and <END> keys move to
the first and last line of the menu or submenu respectively.
With the < NEXT> and < PREV> keys the sample rack can be
NEXT
PREV
rotated forward or backward by one position. If necessary, the lift is
automatically raised to the shifting position. When the rack position
has been reached the robotic arm will automatically be aligned to the
corresponding rack position.
During data input the <SELECT> key is used to select a pre-
defined entry from a selection list.
Metrohm 838 Advanced Sample Processor, Operation 5
2.1 Operating principles
The <SELECT> key allows to select from a given list of entries when
editing a parameter.
SELEC T
Editing and sequence control
When editing a method sequence the <INSERT> and <DELETE>
INSERT DELETE
keys are used to insert or delete a command line.
RESET
CLEAR
QUIT
ENTE R
Command keys
SAMPL E
7
The <CLEAR/RESET> key is used to initialize the Sample Processor
and dosing devices. This corresponds to the switching-on process.
During data input the <CLEAR/RESET> key is used to de-
lete an entry or to reset the default value. In text entry mode
the last character is deleted.
During a method sequence the <QUIT> key can be used to termi-
nate the command which is currently being carried out. The following
command is executed.
During data input the <QUIT> key is used to terminate an en-
try. During navigation in a menu the <QUIT> key is used to
exit the active (sub)menu and select the next highest menu
level.
During data input the <ENTER> key is used to accept the entry.
The <SAMPLE> key is used to set the current sample position. This
has to be done before a sample series is run.
At the start of a method this position is assumed to be the first sample
in a series. If no sample position has been set then the Sample Processor will select rack position 1.
MOVE
With <MOVE> a vessel or a particular rack position can be moved to
the active tower or a robotic arm can be swung to an external position.
8
As well as the actual sample beaker a maximum of 16 possible special beakers can also be defined. A particular rack position can be
moved to directly by entering the position number (with the numerical
keys).
The direction and speed of rotation can be altered in the parameter
menu.
6 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
Important:
For safety reasons it is only possible to rotate the sample rack when
the lift or both lifts are located in the shifting position or above it. During a rack rotation the lift (or both lifts) are automatically first raised to
the predefined shift height.
When a method is started a second time, without switching off and on
again, the last accessed sample position is memorized and be applied in the next method run.
LIFT
9
PUMP
4
STIR
5
DOS
6
Raises or lowers the lift. The predefined lift positions (working position,
rest position, rinsing position, shifting position, special position) can
be selected with the <SELECT> key. They can be entered and
saved separately for each rack in the configuration menu.
As well as the predefined lift positions it is also possible to enter absolute lift positions in mm via the numerical keys.
The <PUMP> key is used for switching the peristaltic pump. The
pump rate can be selected in 15 steps. Selecting a sign (+ or –) with
the pump rate allows to set the direction of the rotation of the pump
drive.
Under <PARAM>,
>manual stop you can define whether the peri-
staltic pump should be switched off with the <STOP> key or not.
The <STIR> key is used for controlling the stirrers. A stirrer can be
switched on permanently or switched on for a given period and then
switched off again. The <SELECT> key is used to select both the
stirrer and the function. The current status of the stirrer is shown directly in the display.
Example:
STIR: T1 : ON s Display: STIR +- (+=on -=off)
STIR: MSB2 : 10 s Display: STIR 10 s
In this case in the first line the stirrer at tower 1 is switched on. The stirrer is selected with the <SELECT> key. As can be seen in the sec-
ond line, the duration of the stirring process can also be entered.
The stirring rate can be set for each stirrer in the parameter menu.
Under <PARAM>,
>manual stop you can define which stirrers can
be switched off with the <STOP> key.
The <DOS> key is used to control the connected dosing devices.
Both positive and negative volumes can be dosed. Negative volumes
are used for aspirating liquids, e.g. during pipetting.
As well as entering the volume to be dosed (with the numerical keys),
<SELECT> can also be used to select additional functions:
- Filling the dosing or exchange unit (fill)
- Initializing the exchange of a Dosing unit (release)
- Preparing the tubing systems and cylinder (prep.)
- Emptying the tubing system and the dosing cylinder (empty)
- Ejecting the cylinder contents (Eject)
Metrohm 838 Advanced Sample Processor, Operation 7
2.1 Operating principles
- Driving the piston to the max. volume
- Compensating for the play between piston and spindle (compen.)
- Valve switching (port)
The first parameter of the DOS command stands for the number of the
dosing instrument (1…3, * = all) and the Dosino port (e. g. 1.1 stands
for Dosino 1, port 1), the second parameter for the function or the volume to be dosed.
Example:
DOS: 2.1 <ENTER> 4.51 ml <ENTER>
DOS: 2.* <ENTER> <SELECT> ... fill <ENTER>
The dosing and filling rates can be set in the parameter menu.
SCAN
1
Shows the incoming signals or data from the Remote or the serial
RS232 interfaces.
This function is used for checking the data communication with connected devices.
The first parameter shows the selected interface. The second parameter shows the signals or data that are received directly.
CTRL
2
WAIT
3
If the parallel Remote interface (Rm) is selected then the signal states
of the incoming Remote lines are shown in binary form (1=line active,
0=line inactive).
If the serial RS232 interface (RS) is selected then the data string received via this interface will be shown (14 characters per line).
Controls external devices via the Remote or RS232 interface.
The first parameter sets the interface (<SELECT>). The second parameter defines the status of the lines (Remote lines) or data (RS232
interface) to be outputted via the selected interface.
2nd parameter, for Remote interface
Binary pattern with 14 digits (0, 1 or ∗) for the 14 output lines or prede-
fined binary pattern (<SELECT> selection), e.g.
etc.
2nd parameter, for RS232 interface
Data string with up to 14 alphanumeric characters (any).
The default value "&M;$G" (for starting Metrohm instruments) can be
set with <CLEAR>.
The <WAIT> key has no function in the normal operating condition. It
is used to insert the WAIT command in a run sequence.
PUMP R/S 1, INIT
8 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
EXT
0
VALVE
<
+
.
RACK
>
-
*
Sequence control
START
The <EXT> key is used to switch on and off the pump connectors on
the rear side of the tower. On entry of the address of the connector (1
or 2) the current state of the connected pump is switched, i. e. a currently active pump is switched on.
The display indicates the current state of the pump conncectors (i. e.
PUMP–+; + means active, – means inactive).
Example:
PUMP on/off no. ? <2> display: PUMP -+--
PUMP on/off no. ? <2> display: PUMP ----
In this case pump 2 is switched on and off.
Under <PARAM>,
>manual stop you can define whether the pump
connectors should be switched off with the <STOP> key or not.
The <VALVE> key is used to switch the position of the injection
valve at the tower of the Advanced Sample Processor.
Example:
VALVE: inject
<ENTER> switches the injection valve to the displayed position.
This function is only working in the Sample Processor models
2.838.0x20 with built-in injection valve.
With the <RACK> key the sample rack can be initialized. The connected peripheral devices (e.g. Dosimats, Dosinos) are not affected
by this.
The sample rack and lift (both lifts in 2-tower versions) are moved to
the zero position and automatic rack recognition is carried out. The
SAMPLE variable (= rack position of the current sample) is reset to
1.
The <START> key starts a method. A start is only possible when the
Advanced Sample Processor is in the normal operating condition, i. e.
when the display shows
ready.
If <START> is activated after an interruption (<HOLD>, see below),
then the sequence continues with the next command.
The <START> can also be used to carry out a single command line
in a run sequence (TRACE function), see p. Fehler! Textmarke nicht
definiert..
Metrohm 838 Advanced Sample Processor, Operation 9
2.1 Operating principles
The <STOP> key ends a method.
STOP
If a sample series is stopped manually with <STOP> then the final
sequence of a method will not be carried out. When the <STOP> key
is pressed the functions listed in the parameter menu under
stop will be carried out.
>manual
LEARN
HOLD
The <HOLD> key interrupts a method sequence.
Connected peripheral devices will not be stopped automatically. Only
the method sequence will be interrupted. In the HOLD condition a
method can be completely terminated with <STOP> or continued
with <START>.
After an error message in the method sequence the Advanced Sample Processor switches automatically to the HOLD condition after
<QUIT>.
10 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
2.1.4 Instrument dialog
The instrument dialog of the Advanced Sample Processors is arranged
in menu levels in which the following rules apply:
Main menu
The <CONFIG>, <PARAM> and <USER METHOD> keys of the
Sample Processor open a main menu whose thematically arranged
submenus are accessed by repeatedly pressing this key or with <>.
The name of the main menu appears in the first line.
Submenu
Each submenu has its own title which is indicated by
in the lower line of the display. From the title you can use <ENTER> to
access the individual questions with which the most important instrument settings can be altered. The first line of the display always shows
the name of the active submenu.
Navigation in the menus is by the cursor keys; with <HOME> you can
access the first line of the menu and with <END> the last one.
<QUIT> exits the active menu and accesses either the next superior
menu or the normal operating condition.
">" and appears
<ENTER> always opens a submenu or confirms the data input of the
lowest menu level.
Input lines
For input lines without
":" the values can be entered by the numerical
keys. The set value is accepted with <ENTER> and the next line appears.
For input lines with
":" predefined values can be selected with the
<SELECT> key. <ENTER> accepts the set value and the next line
appears.
Depending on the parameter, <CLEAR> is used to set the initial value.
The <CLEAR> key is also used to reject incorrectly entered values.
<QUIT> exits the questions and returns to the submenu.
The following schematic diagram shows the instrument dialog arrangement.
Metrohm 838 Advanced Sample Processor, Operation 11
2.1 Operating principles
Normal state
KEY
QUIT
Kex title
>Submenu 1
KEY
Key title
>Submenu 2
KEY
ENTER
ENTER
ENTER
>Submenu 1
Inquiry 1
ENTER
>Submenu 1
Inquiry 2
>Submenu 1
Inquiry n
>Submenu 2
Inquiry 1
ENTER
QUIT
QUIT
Key title
>Submenu n
KEY
Fig. 2 Dialog arrangement
ENTER
>Submenu 2
Inquiry 2
>Submenu 2
Inquiry n
12 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
2.1.5 Data input
Input line
Either one or two parameters can be entered in a menu line or a sequence. A blinking block cursor indicates where a parameter can be
entered.
<Select> list
SELEC T
>stirring rates
stirrer tower 1 █ 3
Title line
Input line
Menu entry Cursor Parameter
>sample sequence
04 STIR █ T1 : 1 s
Command 1
st
parameter 2nd parameter
Title line
Input line
Switching between the parameters is carried out with the arrow keys
<> and <>. <ENTER> moves the cursor automatically to the
right, <QUIT> moves it to the left.
Data can usually be entered directly by the numerical keys of the keypad.
For entries marked by a colon the <SELECT> key can be used to dis-
play a selection of entries. This selection is cyclically arranged like a revolving drum.
Example:
>RS232 settings
baud rate: 9600
9600
<SELECT>
>RS232 settings
baud rate: 2400
4800
2400
1200
600
<ENTER>
Fig. 3 Selection list
Metrohm 838 Advanced Sample Processor, Operation 13
2.1 Operating principles
2.1.6 Text input
The text editor can be used wherever provision is made for the entry of
a text.
Numbers can be entered directly via the keypad.
PRINT
<
ENDSEQ
The "<" or ">" keys open the text editor. With "<" an existing character
>
string is deleted and the text cursor moves to the left-hand end of the
.
*
input field. With ">" an existing character string is retained, the text cursor moves to the last character of the existing text.
A character string is displayed that consists of all the characters that
can be entered in alphabetic order. The currently selected character
always blinks (text cursor).
Character selection
The "<" and ">" keys move the character string made up of all the se-
lectable characters (upper and lower case letters, numbers and special
characters, arranged alphabetically) in the selected direction past the
text cursor. Pressing either of these keys once moves the character
string in the corresponding direction by one position. Rapid character
string movement is achieved by keeping the key pressed down.
Confirming character selection
ENTE R
The <ENTER> key appends the character currently under the text
cursor to the existing text line. When the complete width of the text input field has been filled the text input mode is exited and the text line is
accepted with <ENTER>.
RESET
CLEAR
Delete character
The <CLEAR> key deletes the last character of an existing text line.
The text cursor automatically moves one character to the left.
Ending text input
QUIT
<QUIT> exits the text input mode. The displayed text line can then be
accepted with <ENTER> or rejected by pressing <QUIT> a second
time.
14 Metrohm 838 Advanced Sample Processor, Operation
2.1 Operating principles
Arrangement:
>store method
method: ********
"<" or ">"
blinking text cursor
>store method
█
method:
<ENTER>
>store method
method:
>store method
method: Chloride
ABCDEFGHIJ...abcd...1234...*%&/()=...
█
DEFGHIJ...abcd...1234...*%&/()=...
CC
<QUIT>
<ENTER>
blinking text cursor
"<" or ">"
...<ENTER>...
<QUIT>
character chain
2x ">"
reject
accept
Fig. 4 Text input
The figure above shows how a character string can be entered, e.g. for
naming a method. Text input is concluded with <QUIT>. The whole of
the entered character string is then shown and can be accepted with
<ENTER> or rejected with <QUIT>.
Metrohm 838 Advanced Sample Processor, Operation 15
2.2 Configuration
her l
l
2.2 Configuration
CONFIG
Main menu:
configuration
>auxiliaries
configuration
>tower 1
configuration
>rack definitions
configuration
>Dosing units
configuration
>RS232 settings
• Open submenu with <ENTER>
• Use <> or <> to move up and down by one
menu item
• Use <HOME> or <END> to move to the first or last
menu item
• Use <QUIT> to return to operating condition
2.2.1 Miscellaneous
configuration
>auxiliaries
>auxiliaries
dialog: english
Use <QUIT>
for next hig
eve
english, deutsch,
français, español
>auxiliaries
display contrast 3
0…3…7 0 = low contrast
>auxiliaries
beeper: ON
ON,OFF
>auxiliaries
external Start: off
on, off
Normally the Sample Processor takes over the complete run control for a
sample series as the "Master". This may be unwanted, particularly if an
automated system has been set up that includes instruments that are not
from Metrohm. This is why the Sample Processor can also be started from
any external instrument via the Remote interface.
With
external Start: ON the run sequences of the Sample Processor will
be started as soon as input line 7 is activated at the Remote interface (low
level).
Submenu for basic settings
Open the submenu with <ENTER>
Select dialog language
Set display contrast
7 = high contrast
Beep for warnings on or off
Switch on external start via Remote line
(Input 7)
16 Metrohm 838 Advanced Sample Processor, Operation
2.2 Configuration
The run sequences of the Sample Processor will be stopped when input
line 6 is activated (low level). The technical details can be found in the
8.789.1033 Technical Reference of the Sample Processors.
>auxiliaries
>>running time meter
Shows the elapsed time
0…9999 h
Submenu for running time meter, open
with <ENTER>
>>running time meter
elapsed time 0.0 h
Warning limit for running time
meter
OFF, 0…9999 hours
>>running time meter
warning OFF h
The running time meter is used to support the regular maintenance of the Sample Processor. If a warning limit is entered then,
when this period has elapsed, a message will appear indicating
that maintenance is required.
>auxiliaries
device label
8 ASCII characters
Name of the instrument
for identification
>auxiliaries
program 5.838.0012
read only
Program version
Metrohm 838 Advanced Sample Processor, Operation 17
2.2 Configuration
2.2.2 Tower settings
configuration
>tower 1
Submenu for basic settings for the tower
Open the submenu with <ENTER>
>tower 1
max. stroke path 125 mm
0…125…235 mm
Max. lift range for Lift 1
This max. stroke path setting is important for safety reasons. Correct entry
of this value can prevent, that i. e. an injection needle or tubing will be bent.
The working head cannot move any lower than the position entered here
(0 mm = upper stop of lift). Make these settings before you edit the rack
definitions.
>tower 1
min. beak. radius * mm
*, 1…100 mm * = any value
Sets the minimum required beaker radius for processing a sample
This is also a safety setting. In order to prevent a fully equipped, wide titration
head from trying to enter a narrow sample beaker a limit for the minimum
necessary beaker radius can be entered here. During a method sequence
the value entered here will be compared with the value given for the effective
beaker radius in the rack table before the lift is lowered and, if necessary, an
error message will be produced.
Entering * prevents a comparison from being made.
>tower 1
>>swing head 1
Submenu Swing Head
Open with <ENTER>
If a 786 Swing Head equipped with a robotic arm is mounted on the Sample
Processor then it is essential that the correct settings for the mounted robotic
arm are entered, as otherwise the instrument will not be able to position it
exactly.
Each of the following settings can be interactively defined with the LEARN
function. Press the <LEARN> key and then move the lift or robotic arm
with the arrow keys <> and <> or <> and <>. The set values
can be accepted with <ENTER> and corrected later.
For further explanations of the LEARN mode, see section 2.3.8.
Setting the rinsing height for external positions *
0…235 mm
)
>>swing head 1
rinse position 0 mm
Setting the swing height for external positions *
0…235 mm
)
>>swing head 1
shift position 0 mm
18 Metrohm 838 Advanced Sample Processor, Operation
2.2 Configuration
Swing angle for external posi-
)
tion 1 *
Offset…84.00…max. angle+offset
>>swing head 1
external pos.1 117.00°
0° = points to rack center
The swing angle for the external positions is entered as an absolute angle. The input limits are defined by the offset of the Swing
Head drive (approx. 9°) and the set max. swing angle range.
Setting the working height for
external position 1 *
0…235 mm
)
>>swing head 1
work position1 0 mm
Swing angle for external position 2 *
… up to external pos. 4
* can be set with LEARN function
)
>>swing head 1
external pos.2 117.00°
Metrohm 838 Advanced Sample Processor, Operation 19
2.2 Configuration
her l
l
2.2.3 Rackdefinitionen
configuration
>rack definitions
>rack definitions
>>recall rack
Use <QUIT>
for next hig
eve
In order to make a modification to the definition of a sample rack the rack
data must first be loaded. The data of the Metrohm standard racks is stored
under their ordering number.
>recall rack
name: 6.2041.450
10 ASCII characters
The <SELECT> key can be used to make a selection from the saved rack
data. The rack data is loaded with <ENTER>. The first selection to appear
is the rack name of the currently attached rack.
>recall rack
code 000001
000001…111111
The magnet code is used for the unambiguous identification of the rack. The
magnet code is recognized during the initialization of the rack. This is why
the <RACK> key should be pressed whenever a rack is changed.
For security reasons the max. stroke path should be set before modifications
of the lift positions are made, see section 2.2.1.
>recall rack
work position T1 0 mm
0…235 mm (in mm from upper stop point)
>recall rack
rinse position T1 0 mm
0…235 mm (in mm from upper stop point)
>recall rack
shift position T1 0 mm
0…235 mm (in mm from upper stop point)
>recall rack
special pos. T1 0 mm
0…235 mm (in mm from upper stop point)
>recall rack
beaker radius * mm
*, 1…100 mm * = any value
This setting is required for the check of the beaker radius, see p. 17.
Submenu for defining individual racks
Open the submenu with <ENTER>
Load rack definitions
Name of the rack to be loaded
Magnet code of the rack
See table on p. 65.
Working position for sample positions *)
Rinsing position for sample positions *)
Shifting position for sample positions *)
Special position for sample positions *)
Effective beaker radius for the sample
positions on the rack
20 Metrohm 838 Advanced Sample Processor, Operation
2.2 Configuration
her l
l
>recall rack
beaker sensor: off
Tower, SwingH, off
Selection of the beaker sensor
Not implemented.
>recall rack
rack offset 0.00°
Correction for the rotation angle of the
sample rack *
)
-5.00…0.00…5.00°
)
*
All the above lift positions and the rack offset can be set by using the
<LEARN> function.
Special beaker positions
Use <QUIT>
for next hig
>>recall rack
>>>special positions
Submenu special beaker positions
Open with <ENTER>
Special beaker positions are predefined places on a sample rack that are not
treated as sample positions. They can be occupied by rinsing beakers or
eve
conditioning beakers and selectively addressed during a run sequence. Up
to 16 special beaker positions can be defined per rack. For each special
beaker the work position of the lift and the beaker radius can be set, see
above.
Selection of special beaker
1…16
Rack position of the special
beaker
etc. up to special beaker 16
>>>special positions
special beaker 1
>>special positions 1
rack position 0
0…number Pos.
0 = not defined
>rack definitions
>>store rack
Save rack definitions
In order to store modifications to the definition of a sample rack the submenu
>>store rack is selected.
>store rack
name: 6.2041.310
10 ASCII characters
Name of rack
With the <SELECT> key you can select one of the existing rack names. The
rack data is stored with <ENTER>. Any rack name can be used. The input
of any rack name can be made directly via the numerical keys or in the text
Metrohm 838 Advanced Sample Processor, Operation 21
2.2 Configuration
input mode, see p. 14. Selection of the alphanumerical characters with the <
and > keys or <PRINT> and <RACK>.
>rack definitions
>>delete rack
Delete rack definitions
The submenu >>delete rack must be selected if a rack definition is to be
deleted.
>delete rack
name: 6.2041.310
Name of the rack
The <SELECT> key can be used to select one of the existing rack names.
<ENTER> confirms the selection. <QUIT> stops the deletion process.
Before the deletion a question appears.
>rack definitions
delete 6.2041.310 ?
<ENTER> confirms the deletion. <QUIT> stops the deletion process.
When the submenu '
data a request appears about saving the rack data.
>rack definitions
overwrite 6.2041.310 ?
>rack definitions' is exited without saving modified
Confirm the question (store the rack definitions) by pressing the
<ENTER> key. Reject storage with <QUIT>.
22 Metrohm 838 Advanced Sample Processor, Operation
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