Fisher Scientific behr behrotest TRS 300 User manual

behr TRS 300
– 1 –
© behr Labor-Technik 2007
271005
Please read this operating manual carefully before starting use of your new TRS 300 control unit!
The manual introduces you to the use of the apparatus with clear and simple guidance. Additional infor-
mation, which is useful and important for an understanding of the manner of operation of the apparatus,
is denoted by a gray stripe in the margin.
For reasons of safety in use of the system, please follow all safety warnings carefully. These
are designated in the text by a warning symbol .
We wish you success in the use of the
behrotest®
TRS 300

behr TRS 300
– 2 –
271005
behr TRS 300
– 3 –
© behr Labor-Technik 2007
271005
Contents
Notes for safety.................................................3
Scope of supply ................................................4
Correct use of the TRS 300 ..............................5
TRS 300: Connections and operating ele-
ments..................................................................6
Connecting the TRS 300...................................8
Switching the TRS 300 on ................................9
Using the TRS 300...........................................10
The operating unit .............................................. 10
Write a temperature program............................. 16
Processing samples...........................................22
The COD program .............................................26
Maintenance of your TRS 300........................27
What do I do if...? ............................................28
Technical data .................................................30

behr TRS 300
– 2 –
271005
behr TRS 300
– 3 –
© behr Labor-Technik 2007
271005
Notes for safety
Danger of electric shock!
Always install all cables in such a way
that they cannot come into contact with
the hot inner zone of the heating block;
they could otherwise smoulder through!
Always ensure that no liquids can come
into contact with cable connections or
the interior of the unit!
Always disconnect the mains plug
before opening the unit! Repairs on
electrical, electronic and mechanical
modules of this unit may be performed
only by authorized specialist staff!
Danger of injury in case of breakage
of glass! Always adhere to your
professional association‘s regulations
when using and handling glass
elements!
Care is required when using and
handling acids and alkalis! Danger of
corrosive burns and injuries! Always
adhere to the safety regulations in
the latest edition of the Hazardous
Substances Ordinance!
Hazard from toxic gases!
Always perform digestion operations
which can result in evolution of toxic
or corrosive vapours in a fume cabinet
and/or using an exhauster system! We
recommend operation of the digester
and exhauster system in the fume
cabinet.
Never operate the TRS 300 control unit
in wet, humid or explosion-endangered
areas!
Maximum air humidity = 80%
Maximum temperature = 40° C

behr TRS 300
– 4 –
271005
behr TRS 300
– 5 –
© behr Labor-Technik 2007
271005
Scope of supply
Please check the contents of the pack for completeness and freedom from damage immediately upon
receipt.
Claims resulting from damage during transportation which is externally apparent must be lodged imme-
diately with the carrier (i.e., the post/mail service, the railway administration, the freight organization,
etc.) - see the label on the packaging.
In case of damage which is not apparent from outside („concealed transportation damage“), please
contact the behr after-sales service immediately upon discovery of the damage. The same applies in
the case of any other complaints.
Address:
behr Labor-Technik GmbH
Spangerstrasse 8
D-40599 Düsseldorf, Germany
Telephone: [phone]
Telefax: (0211) 7 48 47 48
e-mail: [e-mail]
Your TRS 300 control unit is supplied ready for connection.

behr TRS 300
– 4 –
271005
behr TRS 300
– 5 –
© behr Labor-Technik 2007
271005
Correct use of the
TRS 300
The behr TRS 300 is used for actuation of
behrotest® digesters.
Potential adjustments available to you, and those
that are recommendable for your tasks, depend
on the unit connected. Please read the explanato-
ry notes in this manual for this information.
Please under all circumstances adhere to the
following items, which are intended to assure for
you maximum possible operating safety and relia-
bility and the longest possible service-life for your
behr TRS 300:
- Always operate the unit in accordance with
the instructions and information contained
in this operating manual!
- Modications to the unit will result in for-
feit of any guarantee liability and may cau-
se serious defects in the operating safety
and reliability of your behr TRS 300.
- Never expose the control unit to aggressi-
ve vapours, such as acidic, alkaline or sol-
vent fumes!
Only operate your behr TRS 300 under normal
laboratory conditions.

behr TRS 300
– 6 –
271005
behr TRS 300
– 7 –
© behr Labor-Technik 2007
271005
Press button for
enter / stop
behr
Heating
TRS 300
TRS 300: Connections and
operating elements
Figure 1: Front view
1.1 Display
1.2 „Heating“ display lamp
1.3 Operating button
1.4 Positioning/carrier stand, adjustable in inter-
vals of 30 degrees

behr TRS 300
– 6 –
271005
behr TRS 300
– 7 –
© behr Labor-Technik 2007
271005
HEATING
Behr Labortechnik GmbH 40599 Düsseldorf
RS 232
TEMP.PROBE
PT 100
I
0
Figure 2: Rear view
2.1 RS232 interface
2.2 Temperature sensor socket
(Pt 100)
2.3 Mains switch
2.4 Digester unit connecting socket
2.5 Power cable

behr TRS 300
– 8 –
271005
behr TRS 300
– 9 –
© behr Labor-Technik 2007
271005
Connecting the TRS 300
Danger of electric shock!
Always install all cables in such a way
that they cannot come into contact with
the hot inner zone of the heating block;
they could otherwise smoulder through!
Position the TRS 300 next to your digester.
The positioning/carrier stand can be adjusted;
it engages at intervals of 30 degrees. Please
select a position in which you can read off and
operate the unit without difculty.
Connect the power cable (Page 7, Section 2.5) of
the control unit to a safety-contact power socket.
Then connect your digester to the control unit:
Insert the power-supply cable plug on the digester
into the HEATING socket (Page 7, Section 2.4)
and secure it using the union nut.
Insert the three-pole diode connector on the tem-
perature sensor into the TEMP PROBE PT 100
socket (Page 7, 2.2) and secure it using the
union nut.

behr TRS 300
– 8 –
271005
behr TRS 300
– 9 –
© behr Labor-Technik 2007
271005
Switching the TRS 300 on
► Set the mains switch (Page 7, 2.3) on the rear
panel of the unit to the „I“ position.
The mains switch on the TRS 300 performs
two functions. It is used, on the one hand, to
switch the unit on and off. There is, in addition,
a fuse integrated into the switch.
This fuse functions similarly to a miniature
circuit-breaker (m.c.b.) familiar from your hou-
sehold wiring system. It interrupts the electrical
circuit if an overcurrent occurs.
Since it is necessary to pretension a spring for
this safety function, the mains switch on the
TRS 300 requires greater force for switching
on than a conventional mains switch.
An initialization message will appear briey on the
display on the front panel when the unit is swit-
ched on. The main menu appears once the initiali-
zation routine has been completed:
The TRS 300 control unit is now ready for
operation.
Prog 01/01 ==>>
022 °C
START EIN

behr TRS 300
– 10 –
271005
behr TRS 300
– 11 –
© behr Labor-Technik 2007
271005
behr
TRS 300
Press button for
enter / stop
+
Heating
Using the TRS 300
The operating unit
You can program and operate your behrotest®
TRS 300 control unit quite simply using a single
button. The principle is the same in all cases:
Turn the button to select an option. The option
selected is indicated by the fact that it is shown
inverted, i.e., bright characters on a dark back-
ground.
The button can be turned in both directions. In
doing this, you will pass through all the possible
options on the particular display and will always
reach the option which you wish to select.
Try it out!
Conrm the option selected by pressing the
button.
This complete procedure, i.e., „Selecting by
turning“ and „Selecting by pressing“ is referred
to below simply as „Selecting“.

behr TRS 300
– 10 –
271005
behr TRS 300
– 11 –
© behr Labor-Technik 2007
271005
Prog 01/01
14:05
==>>
START EIN
022 °C
3
1
65
4
2
The Start menu
1 If a program has been started, or the unit is
preheating, the target temperature is displayed
here.
If no program is running, but a starting time
has been selected, the starting time is display-
ed here.
This box is otherwise blank.
2 The temperature currently measured by the
temperature sensor is always displayed here.
3 „Start” menu item: The temperature program
most recently selected starts if this menu item
is selected. What program this is is1 indicated
at bottom left.
4 „Preheat ON/OFF“ menu item: the TRS 300
will preheat to the starting temperature for the
temperature program selected if this menu
item is selected. The menu item will then
change to „OFF“. Select „OFF“ in order to
switch the heating function off again.
5 The program currently selected, and the pro-
gram step reached, are indicated here.
6 „Continue“ menu item: select this menu item
to access other possible settings. You can
- select another program
- write a new program
- congure the unit to your needs

behr TRS 300
– 12 –
271005
behr TRS 300
– 13 –
© behr Labor-Technik 2007
271005
Prog 01/01 ==>>
022 °C
START EIN
GERAET
PROGRAMM
<<== zurück
01
Conguring the TRS 300 to meet your
needs
You can, in fact, use your TRS 300 for analyses
even now. You should, however, take a couple of
minutes to perform one or two settings.
These settings can, of course, also be made or
modied at a later time.
This screen will appear when the unit is switched
on:
Turn the operating button until the ==>> menu
item is indicated and then press the button. The
following menu will appear:
Select the Geraet (Unit) menu item.
You will then move to a menu consisting of two
pages.

behr TRS 300
– 12 –
271005
behr TRS 300
– 13 –
© behr Labor-Technik 2007
271005
Select the required entry by turning the operating
button if you wish to change a setting. Press the
button to select the entry and set the required va-
lue by turning the button. Store the value by pres-
sing the operating button again.
First page: Language and time
Select language
Three languages are permanently programmed
in the TRS 300: D (German), GB (English), F
(French). A fourth language can be added as an
option.
German is the default (ex-works) language. A dif-
ferent language can be selected using this menu.
► Select the Sprache (Language) menu item.
The entry for the language will now appear on
a dark background. Turn the operating button
until the required language appears, and then
press the button.
From this point on, all menus and messages will
appear in the language you have selected.
UHRZEIT
SPRACHE
<<== ==>>
D
11:20

behr TRS 300
– 14 –
271005
behr TRS 300
– 15 –
© behr Labor-Technik 2007
271005
Setting the time
You should also set the time while you are on this
page. The time is required to permit use of the
TRS 300‘s Autostart function.
► Select the Time menu item. The rst digit of
the hours will then appear marked.
You can now enter the digits for the time one after
the other. Turn the operating button until the cor-
rect digit appears, and then press it.
If an illogical value is entered, such as „26“ for
the hours or „61“ for minutes, for example, the
unit will reject the value and instead jump back
to the rst digit of the setting.
Use continue ==>> to move to the next page of
this menu.
TIME
LANGUAGE
<<== ==>>
GB
11:20

behr TRS 300
– 14 –
271005
behr TRS 300
– 15 –
© behr Labor-Technik 2007
271005
Second page: Autostart settings
The Autostart settings can be selected on this
page. You can, for example, set the unit to pre-
heat at a specied time or to start a temperature
program at a specied time.
Autostart The following possibilities can be
selected here:
Off - the TRS 300 will only start to
heat when a program is started or
On is selected in the Start menu.
On - the TRS 300 will preheat to
the starting temperature of the most
recently selected program as soon
as it is switched on at the mains
switch (p. 7, 2.3).
Prg - the TRS 300 will start the
most recently selected temperature
program at the Start time.
Tme - the TRS 300 will start to pre-
heat to the starting temperature of
the most recently selected tempera-
ture program at the Start time.
Start time Starting time for Prg and Tme.
The value can be set digit-by-digit,
as described above.
<== back.
Selecting <<== back repeatedly returns the unit
to the Start menu.
START TIME
AUTOSTART
<<== ==>>
OFF
11:20

behr TRS 300
– 16 –
271005
behr TRS 300
– 17 –
© behr Labor-Technik 2007
271005
Write a temperature program
The TRS 300 can be used to write up to ten
different temperature programs.
Program 00 is xed; this is the program for COD
quantitation; it is described further below.
A program can have up to 10 program steps.
When writing a program, always note its
purpose and the settings selected.
Select continue ==>> in the Start menu and se-
lect Program in the menu which then appears.
DEVICE
PROGRAM
<<==
01

behr TRS 300
– 16 –
271005
behr TRS 300
– 17 –
© behr Labor-Technik 2007
271005
You are now on the rst page of the Program
menu.
► Select the entry box for the Program No.
► Select the required Program No. You should
select 01 if you have not yet written any other
program.
► Then select continue ==>>.
You will now see for every program step a page,
on which you can enter the settings for this step.
The Program No. and the Program Step No.
which you are currently editing are shown in the
top line.
Program 07/05, for example, indicates the fth
step in Program No. 07.
This screen page changes, depending on the
Function you select.
There are the following possibilities:
PROG.NUMBER
<<== ==>>
01
TIME
FUNCTION
TEMPERATURE
Program 01/01
<<== ==>>
350
120
T

behr TRS 300
– 18 –
271005
behr TRS 300
– 19 –
© behr Labor-Technik 2007
271005
Function T: Temperature step
In this function, the unit heats up to the specied
Temperature as quickly as possible (if it is not
already preheated) and then maintains this tem-
perature. The entire procedure (heating-up and
maintaining, together) lasts the stated Time in
minutes.
You can enter Temperature and Time digit-by-
digit. The unit will not accept an impermissible
temperature and will instead jump back to the rst
digit of the entry box.
TIME
FUNCTION
TEMPERATURE
Program 01/01
<<== ==>>
350
120
T

behr TRS 300
– 18 –
271005
behr TRS 300
– 19 –
© behr Labor-Technik 2007
271005
Function %: Heat output
This function enables you to specify Heat output
in % of total output, and also Time in minutes.
The unit will then heat at the specied percentage
of total heat output for the time specied.
This function is appropriate only for diges-
ters which do not operate with a temperature
control system. This function should not be
used for a heating block. It could result in the
heating block heating up in an uncontrolled
pattern and then switching off completely be-
cause the thermal cut-out has reacted.
TIME
FUNCTION
HEAT OUTPUT
Program 01/01
<<== ==>>
025
120
%

behr TRS 300
– 20 –
271005
behr TRS 300
– 21 –
© behr Labor-Technik 2007
271005
C/M function: Heating rate
(degrees Celsius per Minute)
In this function, the unit heats up uniformly to the
specied Temperature (in degrees Celsius) in the
specied Time (in minutes). It thus operates on a
temperature gradient.
The temperature gradients which can in fact be
operated depend on the type and heat output
of the digester, and also on the heat capacity
of the samples.
Perform a trial run and nd out for yourself,
using the temperature display, whether the
temperature plots set can actually be achieved.
Function E: End
This function is used to inform the TRS 300 that
the temperature program ends here.
Every program memory slot consists of ten slots
for program steps. The TRS 300 works through
these ten program steps in sequence if it does not
previously encounter an End step.
The last program step of every program must
therefore be an End step. An End step is only
not needed if the program actually has the maxi-
mum of ten steps.
TIME
FUNCTION
TEMPERATURE
Program 01/01
<<== ==>>
350
120
C/M