5.5.2 Determination of the GRADIENT (temperature rise) 14
5.5.3 Determination of the MAXPOINT15
5.6Program management16
5.6.1 Assignment of a sample identification16
5.6.2 Storage of programs17
5.6.3 Calling stored programs18
5.6.4 Cancelling stored programs19
5.6.5 Printing of results20
5.7Running a melting point determination21
5.7.1 Melting point determination with known
melting point21
5.7.2 Determination of the melting point with unknown
melting point22
5.7.3 Modifications of parameters during the
determination of a melting point25
5.8.Boiling point determination27
5.9Adjustment of subparameters28
Please read these instructions thoroughly
before using the Melting Point B-540 Unit.
The instructions should be kept near the unit
for general reference.
Chapter 2 contains important notes on safety
which must be observed if the Melting Point
Unit is to be operated safely.
6.3Calibration of the unit with calibrating substances33
6.4Customer service38
7Taking out of operation39
8Spare parts40
9Appendix41
9.1Connecting a keyboard41
9.2Connection of a printer41
9.3Interface configuration41
9.4Menu chart42
9.5Print-Out45
9.6Error messages46
9.7Technical data46
9.8Materials used47
9.9FCC requirements (for USA and Canada)47
9.10 Declaration of EC conformance48
en, Version L (48 pages)Order No.
B-540 Instructions96626
1
Page 4
Figure 1: Complete view of the unit
2
1
4
i
8
10
Melting point B-5401 Scope of delivery
1 Scope of delivery
Description
Appliance models:Order No.
Melting Point Unit B-540,
220-230 V, 50 or 60 Hz36580
Melting Point Unit B-540,
100-120 V, 50 or 60 Hz36581
Table 1: Versions of the unit
Accessories:
a 1 Oven, upper part of ceramic34564
b 1 Glass panel34236
c 1 Metal cover for heating range36569
d 2 Sample holders of glass36110
e 1 Set of 100 melting point capillaries,each17808
f 1 Set of 10 boiling point tubes, each19007
g 1 Set of 10 boiling point capillaries, each01762
h 2 Spare fuses20083
1 Mains cable PNE, 2.5 m:
Type CH10010
Type earthed (shock-proof)10016
Type GB17835
Type USA10020
Type AUS17836
Swiss keyboard arrangement29599
USA keyboard arrangement29548
1 Printer for documentation
incl. printer cable
230 V, 50/60 Hz38706
115 V, 60 Hz38707
1 Printer cable29547
1 Melting point capillary (1000 off)01759
1 Boiling point tube (100 off)19697
1 Boiling point capillary (100 off)19698
1 Büchi Certificate for Calibration
at Works G/E/F97722
Remote control Meltingpoint
(Manual incl. 3 1/2" diskette)
German33758
English33758
1 Protective cover36625
1 Sample block for prepared
melting point capillaries36629
Table 3: Optional accessories
3
Page 6
Melting point B-5402 Safety
2 Safety
This unit has been designed in accordance with the state of
engineering and the recognised rules of safety. Nevertheless,
it can still be a source of risks and hazards:
• If used by persons with insufficient training
• If used for purposes other than that for which it is intended.
2.1Symbols
Stop
Information about hazards which can lead to serious material
damage or cause serious or potentially fatal injury.
Warning
Information about hazards which can be harmful to your health
or lead to material damage.
Please note
Information about technical requirements. Non-observance
can lead to malfunctions, inefficiency and lost production.
2.2Requirements to be met by the customer
The device must only be operated by persons who have the
training or professional experience to comprehend the hazards
that can arise when using the unit. Personnel without such
training or persons currently undergoing a course of training
require thorough instruction. This Instruction Manual should
form the basis of these instructions.
2.3Proper use
The unit is designed and built for use in laboratories. It is intended
to be used to determine the melting and boiling points at
ambient temperatures of up to 400°C.
2.4Improper use
Any use other than those already listed, and any application
that does not conform with the technical data is deemed to
be a case of mis-use. The customer shall bear sole
responsibility for any damage due to such mis-use.
The following applications in particular are inadmissible:
• Use in rooms requiring an explosion-proof equipment.
• Extraction of samples which may explode or ignite by a
blow, friction, heat or spark (e.g. explosives, etc.).
4
Page 7
Melting point B-540
2 Safety
2.5General hazards
General hazards arise from:
• Mixtures of unknown composition or contaminations.
• Combustible gases or solvent vapours in the immediate
vicinity of the unit.
• Damaged glass components.
• An insufficient distance from the back of the unit to the
wall (see chapter 4, Commissioning the unit).
• Burnings by touching hot parts of the heater.
Apart from authorised maintenance personnel, no one is
allowed to remove any safety devices and covers with a
standard tool. The unit must not be put into operation with
damaged glass components.
Touching life parts may result in fatal injury!
2.6Safety measures
Personal protective garments must be worn, such as goggles
and a laboratory coat.
This Instruction Manual is a component of the melting point
unit and as such it must remain available at any time to the
operating staff where the unit is operated. This also applies to
manuals in other languages which are available on request.
2.7 Modifications
Modifications on the unit or on the spare parts or accessories
as well as the use of any other spare parts or accessories as
those indicated in this Manual are only permitted after consulting
with Büchi Labortechnik AG and obtaining its written consent.
2.8Responsibility of the operator
The operator is responsible for instructing his personnel. For
that purpose, this Manual can be supplied in other languages.
The operator shall inform the manufacturer without delay on
any events relevant to safety which may occur with operating
the Melting Point Unit.
The Melting Point Unit B-540 is a unit to determine melting
and boiling points at ambient temperatures of up to 400°C.
Three different samples can be determined at the same time.
Values can be detected by viewing the samples.
Operating principle
The Melting Point Unit B-540 provides the melting point in
agreement with pharmacopoeia methodologies and the boiling
point according to Silowopov.
Temperature
Setpoint
Figure 3: Analysis flow chart
Gradient
Max-
point
For every determination the procedure is as follows:
1. Selection of the SETPOINT; temperature which is 10°C
below the melting point to be expected.
2. Selection of the temperature GRADIENT; temperature
GRADIENT within the range of the melting point.
3. Selection of the MAXPOINT; temperature at which the
determination can be interrupted automatically.
4. Storage of the parameters selected (if needed).
Time
6
Page 9
Melting point B-5404 Putting into operation
4 Putting into operation
Check the unit for any damages immediately after opening
the packaging. It is important that damage incurred during
transit is determined and reported immediately. If this is the
case, a full statement of facts must be made immediately
(and reported to the post office, railway or transport firm).
It is advisable to keep the original packaging for future transport.
4.1Location of unit
The unit must be erected on a stable, clean and even surface.
For safety reasons and to ensure sufficient cooling in the
electronic compartment, the side walls of the unit must be
placed at least 30 cm away from the walls or other objects.
No containers, chemicals or other appliances should be placed
behind a unit.
4.2Power connections
Check that the voltage of the socket is identical to the voltage
specified on the unit plate. Only connect the Melting Point
Unit to a plug which is earthed. External couplings and extension cables must be earthed (3-contact couplings, cables and
connectors). Any interruption of the earth wire is prohibited.
Risks caused by possible internal defects are thus prevented.
4.3Mounting of accessoires
The sample holders of glass are inserted into the opening of
the housing cover.
Figure 4: Mounting the glass sample holder
The glass sample holders protect the apparatus from dust
and smaller particles and the operator from contact with electric
parts.
Therefore, the apparatus should never be operated without
the sample holders inserted.
7
Page 10
Figure 5: Mounting the glass panel
Melting point B-5404 Putting into operation
The glass panel is placed into the metal heating block, taking
care to touch the panel only laterally.
Figure 6: Inserting the upper ceramic part
The upper ceramic part of the oven is placed onto the metal
block.
The metal cover is placed over the heating area.
Figure 7: Fitting the metal cover 5 Operation
8
Page 11
Melting point B-540
5 Operation
5 Operation
Please note that the unit has been commissioned correctly
according to the instructions in chapter 4 Commissioning.
4
5
Figure 8: Front view, B-540
2
3
6
8
9
10
7
1
5.1Control, operating and display elements
a Master switch
b Magnifying glass for viewing the samples
c Display for prompt facility
d START key to start a determination
e STOP key to interrupt a determination
f MENU key to change displayed menu windows
g ENTER key to change the cursor position vertically when
adjusting parameters on the display
h NEXT key to change the cursor position horizontally
when adjusting parameters on the display
i UP/DOWN keys to change adjustments of the relative
cursor position
j Keys to store measured values during a determination
13
14
18
Figure 9: Rear view, B-540
16
15
17
11
19
12
k Sample holder for melting point capillaries and boiling point
tubes during determination
l Receptacle for unused melting point capillaries and boiling
point tubes
m Receptacle for used melting point capillaries and
boiling point tubes
n Appliance plug
o Plug for printer connection
p Plug for keyboard connection
q Plug for PC connection
r Main fuse
s Pocket for brief instruction manual
9
Page 12
Mainmenu 1Mainmenu 2Mainmenu 3
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE :25.0°C
NAME:
ID#:
TEMPERATURE :25.0°C
RECALLCLEAR
STOREPRINT
Melting point B-5405 Operation
5.2Operating setup of the menus
5.2.1 Main menus
The user may move through these menus for every new
melting point determination.
TEMPERATURE25 °C
TEMPERATURE140 °C
SP 136 °C
GR 2.0 °C
MP 145 °C
TEMPERATURE:135.6 °C
GR 2.0 °C
MP 145 °C
PRESS START
TEMPERATURE145 °C
TEMPERATURE100 °C
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
5.2.2 Graphics
These graphics will accompany the user during a melting point
determination and explain which part of the heating profile is
activated.
5.3Definition of concepts on displays
5.3.1 Main menus
Basic condition (main menu 1)
Temperature: Current temperature inside of the oven.
SETPOINT:Temperature
• at which the sample capillaries are inserted
into the unit;
• as from which the adjusted temperature programwill run down.
10
TEMPERATURE : 25.0°C
NAME:
ID#:
GRADIENT: Temperature rise from 0.1/0.2/0.5/1.0/2.0/5.0/
10.0/20° C/min, at which the unit will be heated
up as from SETPOINT to MAXPOINT.
MAXPOINT: Maximum temperature to be reached for the
current determination. This is set automatically
at 15°C above the SETPOINT but may also be
adapted.
Storage menus (main menu 2)
Temperature: Current temperature inside of the oven.
Name:Name of the method under which the
parametersare to be stored for a melting point
determination.
ID#:Assignment of a sample name to a current
determination which should appear equally on
a subsequent printout.
Page 13
Melting point B-5405 Operation
TEMPERATURE: 25.0 °C
RECALLCLEAR
STOREPRINT
M SAMP1 SAMP2 SAMP3
A XXX.X XXX.X XXX.X °C
N XXX.X XXX.X XXX.X °C
XXX.X XXX.X XXX.X °C
(Main menu 3)
Temperature: Current temperature inside of the oven.
RECALL: Calling stored methods for melting point determi-
nation
STORE: For storing new methods for melting point deter-
mination
CLEAR: For cancelling stored methods of a melting point
determination
PRINT:For switching on and off the automatic printout of
thevalues obtained from a melting point determination.
5.3.2 Display of values
Manuell display
This display permits to read off the melting points after a
determination. A maximum of three values will be displayed
per sample capillary which are arranged in vertical order.
5.3.3 Graphics
TEMPERATURE25.0 °C
TEMPERATURE135.6 °C
PRESS START
TEMPERATURE140 °C
TEMPERATURE145 °C
TEMPERATURE100°C
SP 136 °C
GR 2.0 °C
MP 145 °C
GR 2.0 °C
MP 145 °C
The unit heats up to the preselected SETPOINT:
The unit has reached the preselected SETPOINT and waits
for the temperature program to be started.
With the preselected GRADIENT, the unit heats up to the
maximum point of the temperature program (MAXPOINT).
The unit has reached the highest point of the temperature
program (MAXPOINT) and cools down to the previously
selected SETPOINT.
The unit cools down to room temperature.
11
Page 14
Melting point B-5405 Operation
5.4Preparation of samples
Granular crystalline and inhomogenous samples are crushed
in the mortar and then filled into the melting point capillary to
at least 4-6 mm. In order to obtain comparable results, it is
essential that all three capillaries are filled to the same height
and that the substance is compacted.
Compaction is obtained either by knocking the capillary on a
hard base or letting the capillary drop onto the table through a
glass tube of approx. 1 m length.
5.5Determination of a melting point
The following items must be known before a melting point
can be determined:
a Is the approximate melting point known ?
if notRsee 5.7.2
b Is a sample name to be entered ?
if yesRsee 5.6.1
c Where is the SETPOINT of the determination located ?
SETPOINT inputR5.5.1
d How fast should the temperature rise (GRADIENT)
between SETPOINT and MAXPOINT ?
GRADIENT inputRsee 5.5.2
e Is the difference between SETPOINT and MAXPOINT to
be more than 15°C ?
Change MAXPOINTRsee 5.5.3
12
Page 15
Melting point B-5405 Operation
5.5.1 Determination of the SETPOINT
The SETPOINT can be adjusted in the main menu. This is done
on every individual digit of the relative number. The SETPOINT
is adjusted with keys UP/DOWN and NEXT, the number is transmitted with the ENTER key. By way of example, a SETPOINT
of 180°C is to be adjusted.
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
Actuate ENTER until the cursor is on the SETPOINT field.
Increase or reduce the value until the number 1 is in the first
digit.
NEXT until the cursor is on the second digit.
Increase or reduce the value until the number 8 is in the second digit.
NEXT until the cursor is on the third digit.
Increase or reduce the value until the number 0 is in the third
digit.
ENTER to transmit the complete SETPOINT temperature.
13
Page 16
5 Operation
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
Melting point B-540
5.5.2 Determination of the GRADIENT
(temperaturerise)
The gradient is the heating rate at which heating is continued
as from reaching the SETPOINT temperature to MAXPOINT.
Adaptation of the gradient is made in 0.1/0.2/0.5/1/2/5/10/
20°C/min in the main menu.
By way of example, a gradient of 1°C is to be selected.
Actuate the ENTER key until the cursor is on the gradient
field.
Increase or reduce the temperature rise until the value of
1°C/min is displayed.
Actuate ENTER to transmit the selected temperature rise.
14
Page 17
Melting point B-540
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
5 Operation
5.5.3 Determination of the MAXPOINT
Normally, the temperature of the MAXPOINT is adjusted
automatically at 15°C above the SETPOINT. If this temperature
differential exceeds 15°C in an individual case, the MAXPOINT
may be adapted manually. The MAXPOINT is equally adapted
in the main menu. By way of example, the MAXPOINT
temperature of 195°C is to be increased to 230°C.
Actuate ENTER until the cursor is on the MAXPOINT field.
Increase or reduce the value until the number 2 is in the first
digit.
NEXT until the cursor is on the second digit.
Increase or reduce the value until the number 3 is in the
second digit.
NEXT until the cursor is on the third digit.
Increase or reduce the value until the number 0 is in the third
digit.
ENTER to transmit the MAXPOINT temperature.
15
Page 18
5 Operation
Melting point B-540
5.6Program management
5.6.1 Assignment of a sample identification
If similar parameters are used all over again, it is recommended
to store them with sample names. By simply calling them up
from the memory, their repeated entering becomes dispensable.
As far as necessary, an identification (e.g. batch number or
test number) may be assigned to this method. The name and
the sample identification will then be printed out.
A sample name and the sample identification are entered into
the menu of the memory. The name used may consist of letters,
figures or a combination of figures with letters.
For easy entering of sample names and sample identifications
we recommend to use a keyboard (Büchi Art. No. 29599).
TEMPERATURE :25.0°C
NAME:
ID#:
Actuate ENTER until the cursor is on the NAME field for entering
the method name.
Actuate NEXT until the cursor is on the correct position of the
horizontal which is to be modified.
An individual cursor position can be changed by actuating
UP/DOWN.
Press ENTER to transmit the method name. Enter the
identification again with UP/DOWN and NEXT.
16
Press ENTER to transmit the sample identification.
The name and sample identification are now printed out. But
the method has not yet been stored. If the method is to be
stored in the memory, change over to main menu 3.
Page 19
Melting point B-5405 Operation
5.6.2 Storage of parameters
Press MENU to change to main menu 3.
TEMPERATURE:25.0 °C
RECALLCLEAR
STOREPRINT
Press NEXT until the cursor is on the STORE field.
TEMPERATURE :25.0°C
MEMORY FULL !
PRESS ENTER
TEMPERATURE :25.0°C
NO NAME - NOT STORED !
PRESS ENTER
TEMPERATURE :25.0°C
NAME EXISTS ALREADY
PRESS ENTER
By pressing ENTER, the program is stored with the selected
parameters under the entered name and the display will
change to main menu 1.
The sample identification is not stored.
Possible error messages.
17
Page 20
5 Operation
Melting point B-540
5.6.3 Recalling stored programs
If similar parameters are used all over again, it is recommended
to store them with sample names. By simply recalling them
from the memory, their repeated entering becomes dispensable.
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE : 25.0 °C
RECALLCLEAR
STOREPRINT
TEMPERATURE : 25.0 °C
RCL:XXXXXXq
XXXXXX
XXXXXXQ
Stored programs can only be recalled from main menu 3.
Press the MENU key twice to enter the main menu 3.
The NEXT key is pressed until the cursor is on the RECALL
field.
By pressing the ENTER key, the stored programs are listed.
18
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE :25.0°C
MEMORY EMPTY !
PRESS ENTER
Choose the selected program with UP/DOWN keys (e.g.
benzoic acid).
Recall the selected program by pressing the ENTER key. The
unit is now ready for the next determination with the recalled
method.
Possible error message.
Page 21
Melting point B-5405 Operation
5.6.4 Cancelling stored programs
If stored programs are no more needed or if the capacity of
storage locations is exhausted, programs may be cancelled
(erased).
TEMPERATURE : 25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE : 25.0 °C
RCL:XXXXXXq
XXXXXX
XXXXXXQ
Stored programs can only be cancelled from the main menu.
Press MENU twice to return to the storage menu.
Press NEXT until the cursor is on the CLEAR field.
By pressing ENTER, the stored programs are listed.
Select the program to be cancelled with UP/DOWN (e.g. benzoic
acid).
TEMPERATURE : 25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE :25.0°C
MEMORY EMPTY!
PRESS ENTER
Press ENTER to cancel the selected program. If necessary,
further programs may be cancelled now.
By pressing MENU, return to the main menu.
Possible error message.
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5 Operation
Melting point B-540
5.6.5 Printing of results
1. Automatic printout after every determination
When a determination is complete, results and selected
parameters can be printed out automatically. If this automatic
printout is required, it is necessary to accesss configuration
menu 3.
The menu key is pressed for 3 seconds access the
first submenu.
Press the menu key tweice to access the 2nd
configuration menu.
AUTOPRINT:XXX
PRINTER: XXXXX
KEYBOARD:XX
AUTOPRINT:XXX
PRINTER: XXXXX
KEYBOARD:XX
TEMPERATURE : 25.0 °C
RECALLCLEAR
STOREPRINT
The connected printer is selected in the PRINTER box.
In the AUTOPRINT bix it is stipulated that for:
YES:there will be an automatic printout after
every determination.
NO:there will not be a printout after every
determination.
2. Manual printout after every determination.
The user can stipulate for which determination he wishes to
have a printout.
No must then be selected for AUTOPRINT in configuration
menu 3.
If a printout is required after completion of a determination,
the PRINT box is accessed with the MENU key and confirmed
with ENTER.
20
..
Page 23
Melting point B-540
5 Operation
5.7Running melting point determination
5.7.1 Melting point determination with a known
melting point
TEMPERATURE :25.0°C
SETPOINT;100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE25.0 °C
TEMPERATURE : 135.6 °C
PRESS START
TEMPERATURE :140 °C
SP 136 °C
GR 2.0 °C
MP 145 °C
GR 2.0 °C
MP 145 °C
The melting point determination may be started from any main
menu. The SETPOINT, GRADIENT and MAXPOINT must first
have been defined as described in 5.5.1–5.5.4.
By pressing START, the unit will heat up to the previously
selected SETPOINT. The display shows the temperature
gradient graphically.
The user is informed acoustically when the SETPOINT has
been reached. The graphic will change at the same time.
Samples are introduced into the sample holder.
By pressing START again, the temperature program is started
between SETPOINT and MAXPOINT and the display changes
to the detection phase.
The samples are viewed through the magnifying glass as
required. The melting point is retained by pressing SAMPLE
keys 1/2/3. Every pressing of the SAMPLE keys is ack
nowledged with a beep and confirmed with an indication on
the screen.
M SAMP1 SAMP2 SAMP3
A XXX.X XXX.X XXX.X -C
N XXX.X XXX.X XXX.X -C
XXX.X XXX.X XXX.X -C
A maximum of three modifications of condition per sample
may be transmitted to the memory. If keys are pressed more
than 3x, the last three temperature values will be retained.
When the preselected MAXPOINT has been reached, the
unit will cool down automatically to the previously used SETPOINT. The temperature program may be stopped before
reaching the MAXPOINT temperature by pressing STOP. Even
in this case, the unit will cool down to the previously selected
SETPOINT and display the values obtained.
Samp 1:Determinated value for substance in capillary 1
Samp 2:Determinated value for substance in capillary 2
Samp 3:Determinated value for substance in capillary 3
By pressing MENU, the determination can be repeated.
By pressing STOP, the unit will cool down to ambient
temperature.
21
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5 Operation
Melting point B-540
5.7.2 Melting point determination with unknown
melting point
If the user has no information about the location of the melting
point of his substance it can be found out by means of a
previous fast determination. For that purpose, it is recommended to select the SETPOINT as low as possible and the
temperature GRADIENT as high as possible. Here, the MAXPOINT should be selected to ensure that it is definitely above
the melting point. A fast determination can only be started
from the main menu.
A sample designation is dispensable. The SETPOINT, GRADIENT
and MAXPOINT must be defined. By way of example, a melting
point is to be determined which is between the ambient
temperature and 300°C. For this, it is sufficient to determine
the approximate melting point with one capillary only.
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
Establishing the SETPOINT
(with unknown melting point)
Press ENTER until the cursor is on the SETPOINT field.
Increase or reduce the value until the number 0 is in the first
digit.
Press NEXT until the cursor is on the second digit.
Increase or reduce the value until the number 3 is in the second
digit.
Press NEXT until the cursor is on the third digit.
22
Increase or reduce the value until the number 0 is in the third
digit.
ENTER to transmit the SETPOINT temperature.
The cursor will jump to the next line.
Page 25
Melting point B-5405 Operation
Adjusting the temperature program (GRADIENT)
(with unknown melting point)
Increase or reduce the temperature program until the value
of 20°C/min is displayed.
Press ENTER to transmit the selected temperature program.
The cursor jumps to the next line.
Adjusting the MAXPOINT
(with unknown melting point)
Increase or reduce the value until the number 3 is in the first
digit.
Press NEXT until the cursor is on the second digit.
Increase or reduce the value until the number 0 is in the second
digit.
Press NEXT until the cursor is on the third digit.
Increase or reduce the value until the number 0 is in the third
digit.
23
Page 26
TEMPERATURE :25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
Melting point B-5405 Operation
Press ENTER to transmit the MAXPOINT temperature.
By pressing START, the unit will heat up to the previously
selected SETPOINT. The display will show the temperature
gradient graphically.
TEMPERATURE25.0 °C
TEMPERATURE : 135.6 °C
PRESS START
TEMPERATURE : 135.6 °C
M SAMP1 SAMP2 SAMP3
A XXX.X XXX.X XXX.X °C
N XXX.X XXX.X XXX.X °C
XXX.X XXX.X XXX.X °C
SP 136 °C
GR 2.0 °C
MP 145 °C
GR 2.0 °C
MP 145 °C
The user is informed acoustically that the SETPOINT has been
reached. At the same time, the graphic will change. The samples
are introduced into the sample holder.
By pressing the START key again, the temperature program is
started between SETPOINT and MAXPOINT and the display
changes to the detection phase.
(If Auto-Start had been switched off, refer to 5.9).
The samples are viewed through the magnifying glass as
required. The melting point is retained by pressing SAMPLE
keys 1/2/3. Every pressing of the SAMPLE keys is acknowledged
with a beep and confirmed with an indication on the screen. A
maximum of three modifications of condition per sample may
be transmitted to the memory. If keys are pressed more than
3x, the last three temperature values will be retained.
When the preselected MAXPOINT has been reached, the
unit will cool down automatically to the previously used SETPOINT. The temperature program may be stopped before
reaching the MAXPOINT temperature by pressing STOP. Even
in this case, the unit will cool down to the previously selected
SETPOINT and display the values obtained.
The melting point thus determined is 25°C too high for a more
accurate determination (see chapter 5.5.5).
24
By pressing MENU, the determination can be repeated.
By pressing STOP, the unit will cool down to ambient temperature.
Page 27
Melting point B-540
5 Operation
5.7.3 Modifications of parameters during a
melting point determination
Quite frequently, the user will find out during an actual
determination that his selected parameters have to be
adapted, e.g. because the SETPOINT or the MAXPOINT are
too low or because the GRADIENT runs too slowly. In order
to adapt these parameters, it is not necessary to start the
determination again from the beginning.
The following modifications are possible:
Modifications before reaching the SETPOINT
The SETPOINT can be adapted.
The determination can be aborted.
Cooling down to ambient temperature.
TEMPERATURE25.0 °C
SP 136 °C
Modifications in the ready mode
The MAXPOINT can be adapted.
The GRADIENT can be adapted.
The determination can be aborted.
Cooling down to ambient temperature.
Modifications between SETPOINT and MAXPOINT
The MAXPOINT can be adapted.
The GRADIENT can be adapted.
The determination can be aborted.
Cooling down to ambient temperature.
Modifications before reaching the SETPOINT
Problem: The SETPOINT has been selected too low.
The field for SETPOINT temperature begins to flash and may
be rised by actuating UP/DOWN.
The new SETPOINT temperature is confirmed with ENTER
and the unit returns to the determination mode.
Problem: The determination is to be aborted.
The determination is to be aborted and the unit is to be cooled
down to ambient temperature.
25
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5 Operation
Melting point B-540
Modifications in the ready mode
Modifications between SETPOINT and MAXPOINT
TEMPERATURE135.6 °C
PRESS START
GR 2.0 °C
MP 145 °C
TEMPERATURE :140 °C
GR 2.0 °C
MP 145 °C
Problem: The temperature GRADIENT and/or MAXPOINT have
been selected too low.
The field for temperature GRADIENT begins to flash and can
be increased via UP/DOWN.
The new temperature GRADIENT is acknowledged with
ENTER and the MAXPOINT temperature flashes.
The MAXPOINT temperature can be increased via UP/DOWN.
The newly selected MAXPOINT is confirmed with ENTER and
the unit returns to the determination mode.
26
Problem: The determination is to be aborted.
The determination is aborted and the user returns to the main
menu.
Page 29
Melting point B-5405 Operation
Siedepunkt 100 °C
Boiling point 100 °C
Point d'ébullition 100 °C
20 °C
95 °C
100 °C
5.8Boiling point determination
The sample liquid is filled into the capillary of 3.2 mm internal
diameter to a height of 5-10 mm. Use a syringe for easy filling.
The boiling capillaries are plunged into the sample with their
thick end. Switch the master switch on. Place the sample
capillary into the sample holder. The position for boiling point
determination is either fully to the left or to the right of the
sample holder.
If the approximate boiling point is not known, the SETPOINT
should be selected as low as possible and the temperature
GRADIENT and the MAXPOINT as high as possible (analogously
to the melting point determination, section 5.6, a quick determination for orientation is carried out). If the approximate boiling
point is known, enter the SETPOINT, GRADIENT and MAXPOINT (analogously to melting point determination with known
melting point, section 5.5.5).
The boiling point has been reached when a quick continuous
flow of bubbles (like a string of pearls) is formed at the plungedin end of the capillary.
Figure 10: Boiling point determination
27
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Melting point B-5405 Operation
5.9Adjustment of subparameters
Sub-parameters are main-settings which have to be presetted
by the user when using the insrument the first time. The
presettings are located in the sub-menu (Configuration).
Press and hold the MENU-key for 3 seconds to enter in this
sub-menu. After being in the menu it can be switched through
the window menu by pressing the MENU-key.
5.9.1 Parameter menus
TIME:XX:XX
DATE: XX.XX.XX
NAME: XXXXX
AUTOPRINT:XXX
PRINTER: XXXXX
KEYBOARD:XX
RS232 C: XXXX XXX
CONTRAST: XXX %
BUZZER:XXX
AUTOSTART:XXX
TIME:HH:MM
DATE: DD:MM:YY
UNIT:°X
LANGUAGE : ENGLISH
Menu window for setting data which are to appear on the
printout.
Time:Time
Date:Date
Name:Company name
Menu window for adjusting the displays to be printed out.
Autoprint:Automatic printing after every determination
yes/no
Printer:Selection of the printer to be used
Menu window for adjusting the serial interface to the PC
connection.
Menu window for adjustments of the unit
Contrast:Adjustments of the LCD display
Buzzer:Beep yes/no
Menu window for basic adjustments
Time:Time subdivided into 12 or 24 steps
Date:American or European date
Unit:Temperature in °C or °K
Language:Language as displayed
28
SW-VER.:VX.XX
LAST CAL: XX.XX.XX
CALIBRATION
INTERVAL: XX MONTH
PASSWORD :
SW version: Indication of the software installed
Last cal.:Date of the last calibration
Interval:Time interval before the unit informs the user
that calibration should be re peated.
Password:Entering the menu level for calibrating the unit
by the user.
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Melting point B-5405 Operation
5.9.2 Modification of time, date and company
name
If you connect the unit to a printer, the melting points may be
printed out with other parameters. In order to permit a better
assignment of the printouts, each printout will bear the following:
• the name of the own company
• the time of melting point determination
• the date of melting point determination
Press MENU for three seconds to return to the range of
submenus.
TIME:XX:XX
DATE: XX.XX.XX
NAME: XXXXX
By pressing UP/DOWN, the individual digits are changed; by
pressing NEXT, the horizontal cursor position is changed.
By pressing ENTER, the date field will be displayed and this is
then adapted in the same way as described above.
By pressing ENTER, the field for the company name is
displayed and this is then adapted in the same way as described
above.
By pressing ENTER, the newly entered company name will
be used for all new determinations.
In order to return to main menu 1, press MENU again for
three seconds.
29
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Melting point B-5405 Operation
5.9.3 Automatic printout after every
determination, selection of the printer
In this menu, the following adjustments can be carried out:
• Automatic printout after every determination
• Automatic printout of the transmission curve after every
determination
• Selection of the connected printer
Press MENU for three seconds to return to the range of submenus.
Press MENU twice to go to the menu window.
AUTOPRINT:XXX
GRAPHIC:XXX
PRINTER: XXXXX
By pressing UP/DOWN, the automatic printout will be activated
after every determination, and made inoperative with NO.
Press ENTER to change to the printer field.
Press UP/DOWN to select the printer to be used.
• CITIZEN• EPSON (also Canon and Seiko)
• HP• STAR• NONE
By pressing ENTER, the newly entered printer will apply for
all new determinations.
In order to return to the main menu, press MENU again for
three seconds.
30
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Melting point B-5405 Operation
5.9.4 Definition of the RS-232 C interface
In this menu, you can change the following setting:
• Transfer speed (baud rate)
• Data word length
• Parity
• Number of stopbits
Press MENU for three seconds to return to the range of submenus.
Press MENU twice to change to the menu window.
RS232 C: XXXX XXX
Press UP/DOWN to select the correct RS-232 C interface.
When pressing ENTER, the newly selected RS interface will
be displayed for all determinations.
Press MENU again for three seconds to return to mainmenu 1
31
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5 Operation
Melting point B-540
5.9.5 Display adjustments, switching on/off, beep
In this menu, the following adjustments can be carried out:
• Increase/reduce background illumination on the display
• Switch the beep on/off
Press the MENU key for three seconds to return to the range
of submenus.
Press the MENU key three times to change to the menu
window.
CONTRAST: XXX %
BUZZER:XXX
AUTOSTART:XXX
Menu window to unit adjustments
CONTRAST: LCD display adjustments
BUZZER:Beep on/off
By pressing the UP/DOWN key, the background illumination
will be increased or reduced.
By the pressing the ENTER key, the user return to the buzzer
field.
By pressing the UP/DOWN key, the beep will remain with
YES and be made inoperative with NO.
Press the MENU key again for three seconds to return to the
main menu.
32
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Melting point B-540
Temperature
Temperature
Displayed by
apparatus
Display in calibration sub-menu
of the apparatus
CAL: 83°C+0.0°C+0.0°C
Correction by user
Temperature
Temperature
Displayed by
apparatus following
calibration
Display in calibration sub-menu
of the apparatus
CAL: 83°C+0.5°C+0.0°C
Corrections following
calibration: +0.5°C
Correction by user
First calibration following
installation
Correction = +0.5°C
Second calibration after one
yearCorrection = -0.4°C
Temperature
Temperature
Displayed by
apparatus
following
calibration
Corrections following
2nd calibration: -0.4°C
Correction by user
Display in calibration sub-menu
of the apparatus
CAL: 83°C+0.1°C+0.0°C
5 Maintenance
6 Maintenance
All instructions intended to keep the Melting Point Unit in a
fully operative condition should be duly noted. This also includes
a periodic cleaning and checking for any damages. It is also
recommended to calibrate the unit periodically with adequate
calibration substances.
6.1Cleaning
The housing of the Melting Point Unit B-540 is coated with
paint. It must only be cleaned with a rag to be either dry or
moistened with alcohol. Do not use any chlorinated solvents,
acetone or similar chemical to clean the magnifying glass.
6.2 Upkeep
The upkeep of the unit is mainly limited to:
• a periodical calibration of the transmission
6.3Calibration of the unit with calibrating
substances
The unit is to be checked frequently by means of reference
substances. We recommend to use the following reference
substances for calibrating the Melting Point Unit B-540:
VanillineRated melting pointapprox. 83°C
PhenacetineRated melting pointapprox. 136°C
CaffeineRated melting pointapprox. 237°C
We recommend to use the reference substances from the
calibration kit, Büchi order number 37454.
Figure 11: Schematic correction factors
33
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Melting point B-5406 Maintenance
6.3.1 Melting point determination procedure for
the calibration
• The instrument should be calibrated at least once a year.
• The reference substances should be stored protected from
light in a desiccator over desiccant at room temperature
(15-25°C).
• The expiry date must be checked and the reference
replaced if necessary.
• The theoretical melting points of the reference substances
are known. An analysis certificate is provided and describes
how the theoretical melting points are determined.
• Three measurements are performed simultaneously for
each reference substance.
Recommendation:
Filling height:4-5mm, as compact as possible by knocking
the filled capillaries on a hard surface, the
substances are ground in a mortar.
Gradient:0.5°C/min
Setting point:5°C below the expected melting point
Determine the clear melting point (sample melted completely
clear).
6.3.2 Evaluation of the melting point
determination
All measurements should be evaluated in accordance with
strict criteria and checked for their usability. For this we
recommend that at least the following parameters be checked
and the measurement repeated in the case of doubt.
• The melting procedure complies with the requirements.
• There should not be any bubbles which hinder visual eva-
luation of the melting procedure.
• The samples should not become discoloured.
• The samples melt within a narrow temperature range of
1°C.
34
The mean value is calculated and the standard deviation from
3 measurements is:
Vanilline<0.3°C
Phenacetine<0.5°C
Caffeine<0.5°C
Page 37
Melting point B-5406 Maintenance
• No systematic deviation from the individual melting points
due to the particular position in the heating element shall
exceed 0.4°C.
For example (repeated measurements):
Position 1Position 2Position 3Acceptable yes/no
83.0°C83.0°C83.4°Cacceptable
82.3°C82,9°C83,5°Cunacceptable
82.5°C82,3°C82,0°Cacceptable
After the melting value mean values have been carefully
checked, these will be compared with the expected theoretical
values and the corresponding corrections made if necessary.
We recommend correction only in the case of errors > +/-
0.3°C.
CALIBRATION
INTERVAL: XX MONTH
PASSWORD :
6.3.3 Correction inputs
If it is ascertained during a routine check of the temperature
display, that the actual and rated values of the calibration substances differ, the unit may be recalibrated by the user as follows:
Press the MENU key for three seconds.
Press the MENU key again six times to change to the
calibration window.
Press the ENTER key to change to the PASSWORD field.
The password for the calibration may then be entered: CAL.
Press the ENTER key to get to calibration.
35
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6 Maintenance
Melting point B-540
Correction calculation
The theoretical melting point is stated for the reference
substance. If an interval is given, the mid-point is the theoretical
melting point.
Correction = Theoretical melting point display
Examples:
• The theoretical melting point of vanillin is 83.0°C. The Büchi
Melting Point B-540 found a melting point of 82.3°C.
Correction: 83.0°C = +0.7°C
• The theoretical melting point of vanillin is 83.0°C. The Büchi
Melting Point B-540 found a melting point of 83.0°C.
Correction: 83°C = -0.3°C
CAL: 83°C + X.X + X.X °C
136°C + X.X + X.X °C
237°C + X.X + X.X °C
STORE CALIBRATION:XXX
Now the pertinent corrections can be entered for the three
types of calibration substances. The left column indicates the
last correction, the right column is used to enter the new
corrective value.
By pressing the UP/DOWN/NEXT keys, the necessary
corrective value at 83°C is entered.
By pressing the ENTER key, change to the 2nd temperature
value and adapt this analogously.
Then press the ENTER key to change to the 3rd temperature
value and adapt this analogously.
Press the ENTER key to change to the STORE CALIBRATION
field and press the UP/DOWN key to obtain YES.
By pressing the ENTER key, the new calibration is confirmed.
36
05.09.95 WILL BE THE
NEW CALIBRATION DATE.
REALLY STORE : XXX
DONE. VERIFY CAL.
05.09.95 WILL BE THE
NEW CALIBRATION DATE.
REALLY STORE : XXX
DONE. VERIFY CAL.
For reasons of safety, the user is inquired again whether the
corrective factors should be stored. If this is the case, set the
display to YES and confirm with the ENTER key.
Checking of the calibration with the same parameters under
the recommendation (see above).
Page 39
Melting point B-5406 Maintenance
Press the MENU key to leave the calibration menu.
After entering the values, the correction factors for the middle
and right hand columns are added together and entered in
the middle column. Thus, the values in the middle column
alter following each calibration and the right hand column is
then free for the next calibration.
6.3.4 Control measurement
The calibration is checked with verification substances. For
this we recommend the Set of verification substances, Büchi
Item No. 37667. It allows checks at the following temperatures using four different substances:
SubstanceMelting Point*Melting Point
Deviation*
4-Acetyl benzonitrileca. 60°C± 0.2°C
m-Toluic acidca. 110°C± 0.2°C
Sulfanilamideca. 165°C± 0.2°C
Phenolphthaleinca. 260°C± 0.2°C
**
* The exact values are specified on the packing as well as on the certificate from the manufacturer of the substance (Fluka AG).
**
The measurements are performed with the measurement
parameters recommended in section 6.3.1. The melting point
of each reference substance must be checked in at least
three measurements. The standard deviations should be less
than 0.3°C. The maximum permitted deviations of the mean
value from the theoretical melting point are as follows:
SubstanceMelting PointMeasuringTotal
DeviationAccuracyDeviation
4-Acetyl benzonitrile± 0.2°C± 0.3°C>± 0.5°C
m-Toluic acid± 0.2°C± 0.5°C>± 0.7°C
Sulfanilamide± 0.2°C± 0.5°C>± 0.7°C
Phenolphthalein± 0.2°C± 0.8°C>± 1.0°C
All measurement results of the calibration, the correction factors
entered and control measurement values should be recorded.
This allows the calibration to be checked and repeated at a
later date.
37
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Melting point B-5406 Maintenance
6.4Customer service
Work on or in the unit may only be carried out by authorised
service personnel, i.e. skilled technicians who are familiar with
the operating instructions and current regulations with regard
to work safety and accident prevention.
Büchi customer service depots have device-specific service
manuals which are only available to authorised personnel.
Addresses of official Buchi customer service offices are given
on the Buchi website under: www.buchi.com. Please contact
one of these depots if the unit develops any faults, or you
have any technical enquiries or application problems.
The Büchi customer service will be pleased to provide you with
the following services:
• Spare parts service (when placing an order, please use the
article numbers printed in this manual)
• Repair service
• Maintenance service
• Technical hotline
38
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Melting point B-5407 Taking out of operation
7 Taking out of operation
The unit must be cleaned thoroughly.
7.1Storage/Transport
The unit should be stored and transported in its original packaging
and in clean condition.
7.2Disposal
To ensure the disposal of the Melting Point Unit is as ecofriendly
as possible, you will find a list of the materials used, some of
which are marked with material codes, in Chapter 9, Appendix. This ensures that components can be separated and,
where appropriate, recycled. Care must be taken that
regulations are complied with, when disposing of electrical
components. Furthermore, all methods of disposal should comply
with regional and local legislations.
39
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Melting point B-5408 Spare parts
8 Spare parts
Only original Büchi accessories and spare parts guarantee
the operational safety and reliability of this unit. Use of any
spare parts or accessories other than Büchi is only permitted
with the express permission of the manufacturer. For assembly
and dismantling purposes, spare parts should only be used as
described in chapter 6 of this instruction manual.
The reproduction or manufacture of any parts found in this
manual is equally prohibited.
DescriptionOrder no.
Protective cover36625
Brief instruction manual in German96635
Brief instruction manual in English96636
Brief instruction manual in French96661
Compaction wire36721
Capillary holder of plastic36629
Spare bulbs29573
Spare fuse 110 – 120 V19660
Spare fuse 220 – 240 V20083
Upper ceramic part of oven34564
Glass panel34236
Metal cover for heating area36569
Glass beaker36110
Paper retainer for printer IDP-56233751
Ribbon for printer Citizen IDP-56237303
Paper roll for printer Citizen IDP-56228261
Ribbon for printer Citizen IDP-46038683
Paper roll for printer Citizen IDP-46038684
Battery29570
Table 4: Spare parts
40
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Melting point B-540
9 Appendix
9 Appendix
9.1Connecting a keyboard
We recommend to use a keyboard for a simple input of the
sample names and sample identifications.
STOP
Figure 12: Functionkey-line
SAMPLE 2
SAMPLE 1
SAMPLE 3
CONFIG MENÜ
MENÜ
START
9.2Connection of a printer
We recommend to use a printer model Star Printer 512
MC-42 parallel. The printer is connected using the
communication cable supplied with the printer.
All printers are connected through the parallel V24 interface
which is connected via the communication cable (centronic)
to the printer (see section 5.1).
Appropriate printer settings are selected in the configuration
menu of the melting point apparatus. The interface is automatically correctly configured by the melting point apparatus.
9.3Interface configuration
Parallel interface:RS232
Baud rate:9600
Data bits:8
Stop bits:1
Parity:none
41
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9 Appendix
Melting point B-540
9.4Menu chart
The menu chart of the Melting Point B-540 can be subdivided
in 2 main parts:
Main menu
1
Press "MENU"-key for 3 seconds
Configuration-
menu 1
.....
.....
Figure 13: Menu chart
Main menu
2
.....
Configurations-
menus
.....
Main menu
3
.....
.....
.....
• the 3 main menus (Chapter 9.4.1)
• the 7 configuration submenus (Chapter 9.4.4)
42
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Melting point B-5409 Appendix
9.4.1 Main menus 1-3
TEMPERATURE : 25.0°C
SETPOINT:100°C
GRADIENT:2.0°C
MAXPOINT:120°C
TEMPERATURE :25.0°C
NAME:
ID#:
TEMPERATURE : 25.0 °C
RECALLCLEAR
STOREPRINT
Ä
TEMPERATURE25.0 °C
TEMPERATURE : 135.6 °C
PRESS START
TEMPERATURE : 135.6 °C
SP 136 °C
GR 2.0 °C
MP 145 °C
GR 2.0 °C
MP 145 °C
Actual temperature
Setting range: 25 - 400°C
Parameter: 0.1 / 0.2 / 0.5 / 1.0 / 2.0 / 5.0 / 10.0 / 20.0
Automatic; SETPOINT + 15°C or variable to 410°C
Actual temperature
Program name (max. 15 digits)
Sample identification number (max. 15 digits)
Actual temperature
RECALL/CLEAR: Recalling/deleting the stored program
STORE: Store the program
PRINT: Print the measure results on a connected printer
9.4.2 Heating-/Cooling phase
Quick heating (approx. 70°C/min.) to SETPOINT.
SP = SETPOINT
SETPOINT reached. Continue with the START-key.
GR = GRADIENT
MP = MAXPOINT
Slow heating with selected Gradient to MAXPOINT;
or early stopping with the STOP-key (manual)/auto detection.
GR = GRADIENT
MP = MAXPOINT
Serial interface to PC-Connection.
Baud rates: 1200 / 2400 / 4800 / 9600 Baud
Parity
Start / Stop Bit
Contrast: 10-90% (basic value 50%)
Buzzer: ON/OFF (at start and end of the determination)
Time: 12 (AM/PM) and 24 hours clock. HH = hours, MM = minutes
Date: DD = day, MM = month, YY = year
Temperature unit: °C or F° eligible
Language: Deutsch (basic setting), English, Français
SW Version: Indication of the software installed
Date of last calibration
KALIBRATION
INTERVALL : XX MONATE
PASSWORT :
CAL: 83°C + X.X + X.X °C
136°C + X.X + X.X °C
237°C + X.X + X.X °C
SPEICHERN KAL :XXX
05.09.95 WIRD ALS
KAL. DATUM GESETZT.
WIRKLICH : XXX
GEMACHT. KAL. PRUEFEN
CALIBRATION
INTERVAL: XX MOIS
PASSWORD :
CAL: 83°C + X.X + X.X °C
136°C + X.X + X.X °C
237°C + X.X + X.X °C
MEMORISER CAL: XXX
05.09.95 DATE DE CAL.
CONFIRMER LA
CALIBRATION: XXX
VERIFIER LA CAL.
CALIBRATION
INTERVAL: XX MONTH
PASSWORD :
CAL: 83°C + X.X + X.X °C
136°C + X.X + X.X °C
237°C + X.X + X.X °C
STORE CALIBRATION:XXX
05.09.95 WILL BE THE
NEW CALIBRATION DATE.
REALLY STORE : XXX
DONE. VERIFY CAL.
Calibration screen:
Calibration interval: 1 to 36 months.
Password (for the calibration with calibrating substances; chapter
6.3).
3 calibration substances were recommended.
(Calibrating substances: Vanilline, Phenacetine, Coffein)
Left column:shows the actual correction
Right column:insert the new correction.
Storage the correction factors: (YES/NO)
Checking the calibration with the recommended parameters
(see chapter 6.3).
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Melting point B-5409 Appendix
9.4.5 Error messages
TEMPERATURE : XXX.X°C
MEMORY EMPTY !
PRESS ENTER
TEMPERATURE : XXX.X°C
NAME EXIST ALREADY
PRESS ENTER
TEMPERATURE : XXX.X°C
NO NAME - NOT STORED!
PRESS ENTER
TEMPERATURE : XXX.X°
MEMORY FULL !
PRESS ENTER
TEMPERATURE : XXX.X°C
NO PRINTER SELECTED
PRESS ENTER
STORED DATA LOST
PLEASE CHECK BATTERY
AND SET TIME AND DATE
CALIBRATION INTERVAL
EXCEEDED!
LAST CAL.: XX.XX.XX
Memory is empty - no entries.
Program name exists already. Insert a new one.
Program not stored, no name has been inserted.
Memory full. Clear programs to obtain free memory space.
No printer selected. (Configuration menu)
Check the battery (Lithium cell in the unit) and set new time and date.
Calibration interval exceeded.
(Keep pressing MENU-key to go on working)
Last calibration.
CALL SERVICE
ERROR: 001/099
Switch off the unit (main switch).
Keep pressing the START-key and switch on the unit.
Call customer service (see chapter 6.4).
9.5Print-Out
WhatInput/Change
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Company nameConfiguration menu 2
Date of determinationConfiguration menu 2
Method nameMain menu 2
Identification of the determinationMain menu 2
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Start temperature of the determinationMain menu 1
Heating rate selected during the determinationMain menu 1
End temperature of the determinationMain menu 1
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Determined melting points per capillary
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Signature of the controller
Date of the last calibration
Figure 14: Print-Out
45
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Melting point B-5409 Appendix
9.6Error messages
FaultCauseRemedy
STORED DATA LOSTThe battery is exhaustedPress the Menu key for 5 seconds.
PLEASE CHECK BATTERIEOrder new battery and have it installed by techn.
AND SET TIME AND DATEservice. Date and time to be reprogrammed.
CALIBRATION INTERVALThe selected calibrationPress the Menu key for 5 seconds.
EXCEEDED!time has expired.Calibrate the unit.
LAST CAL: XX:XX(See chapter 6, Maintenance)
The Citizen printer doesConfigurationThe SEL key on the printer must
not printbe actuated whenever he printer is switched on.
CALLSERVICEDamage in the unitSwitch off the unit (main switch).
ERROR 001/099Press START-key.
Switch on the unit and keep holding the START-key.
Wrong melting points.Wrong transmission.Always remove capillaries when
switching the unit on.
CalibrationCalibrate the unit.
Table 5: Error messages
9.7Technical data
Dimensions of the unit (width x height x depth)170 x 210 x 340 mm
Dimensions of packaging (width x height x depth)340 x 390 x 580 mm
Weight5.4 kg
Temperature range25 °C - 400°C
Cooling-down rate 350°C – 50°Cmax. 10 min
Heating-up speed 50°C – 350° Cmax. 7 min
Measuring accuracy up to 100°C+/- 0.3°C
Measuring accuracy up to 250°C+/- 0.5°C
Measuring accuracy up to 400°C+/- 0.8°C
Temperature ramps0.1/0.2/0.5/1.0/2.0/5.0/10.0/20.0°C min.
Mains voltage100 – 120 V/ 50 or 60 Hz
220 – 230 V/50 or 60 Hz
Power consumptionapprox. 200 W
Current consumptionapprox. 2 A (100-120 V) / 1 A (220-230 V)
Data saving with current failureThe status of the unit is stored
Restarting is required
Ambient temperature5 – 40°C
Table 6: Technical data
46
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Melting point B-540
9.8Materials used
DesignationMaterialMaterial code
Lens holderGrillamidPA 12
DiaphragmGrillamidPA 12
Spacer ringGrillamidPA 12
CollarArostenPBT
Print holderArostenPBT
Upper part of heaterCeramic
Heater plateAluminiumALMGSI 1
SpacerPEEK
HousingSteel sheetST 12
Axial fan - housing:Aluminium
- propeller:Ultem 254
LensGlass
Conical handleDuroplast
Foot of the applianceNatural rubberNR
Insulation coverSaproplan
Table 7: Materials
9 Appendix
9.9FCC requirements (for USA and Canada)
English:
This equipment has been tested and found to comply with the limits for a Class A digital device, pusuant to both Part
15 of the FCC Rules and the radio interference regulations of the Canadian Department of Communications. These
limits are designed to provide reasonable protection against harmful interference when the equipment is operated in
a commercial environment.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment
in a residential area is like to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Français:
Cet appareil a été testé et s'est avéré conforme aux limites prévues pour les appareils numériques de classe A et à
la partie 15 des règlementation FCC à la règlementation des radio-interférences du Canadian Department of
communications. Ces limites sont destinées à fournir une protection odéquate contre les interférences nétastes
lorsque l'appareil est utilisé dans un environnement commercial.
Cet appareil génère, utilise et peut radier une énergie à fréquence radioélectrique, il est en outre susceprible d'engendrer
des interferences avec les communications radio, s'il n'est pas installé et utilisé conformément aux instructions du
mode d'emploi. L'utilisation de cet appareil dans les zones résidentielles peut causer des interférences nèfastes,
auquel cas l'exploitant sera amené à prendre les dispositions utiles pour polier aux interférences à ses propres frais.
47
Page 50
9 Appendix
9.10 Declaration of EC conformance
WeBÜCHI Labortechnik AG
Postfach, CH-9230 Flawil
Switzerland
declare under our sole responsibility that the product:
Melting Point B-540/B-545
to which this declaration relates is in conformity with the following standards:
EN 61010-1:1993 (~ IEC 1010-1, VDE 0411-1)
Safety requirements for electrical equipment for mesurement, control an laboratory use: General requirements
EN 55014:1993
Limits and methods of measurement of radio disturbance characteristics of electrical motoroperated and
thermal Rotavapors for household and similar purposes, electric tools and similar electrical apparatus