895 Professional PVC Thermomat
Manual
8.895.8001EN / 2014-05-09
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
info@metrohm.com
www.metrohm.com
895 Professional PVC Thermomat
8.895.8001EN / 2014-05-09
Manual
fpe
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.
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Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 About the documentation ................................................... 1
1.2.1 Symbols and conventions ........................................................ 2
1.3 Safety instructions ................................................................ 3
1.3.1 General notes on safety ........................................................... 3
1.3.2 Electrical safety ........................................................................ 3
1.3.3 Flammable solvents and chemicals ........................................... 4
1.3.4 Recycling and disposal ............................................................. 5
2 Overview of the instrument 6
2.1 Front of the instrument ........................................................ 6
2.2 Rear of the instrument ......................................................... 7
Table of contents
2.3 Instrument display ................................................................ 8
3 Installation 9
3.1 Setting up the instrument .................................................... 9
3.1.1 Packaging ................................................................................ 9
3.1.2 Checks .................................................................................... 9
3.1.3 Location .................................................................................. 9
3.2 Mounting accessories ......................................................... 10
3.2.1 Mounting the external nitrogen (N2) supply ........................... 10
3.2.2 Assembling the reaction and measuring vessels ..................... 11
3.2.3 Inserting vessels / Establishing tubing connections ................. 13
3.2.4 Mounting the exhaust air collection tube ............................... 14
3.3 Power socket ...................................................................... 15
3.3.1 Replacing fuses ...................................................................... 15
3.3.2 Power supply cable and power socket ................................... 16
3.3.3 Switching the instrument on and off ...................................... 16
3.4 Connecting a computer ...................................................... 17
3.4.1 Connecting the 895 Professional PVC Thermomat and the
computer .............................................................................. 17
4 Operation 19
895 Professional PVC Thermomat
4.1 Thermomat method ........................................................... 19
4.2 Calibration functions .......................................................... 20
4.2.1 Determining the cell constant ................................................ 20
4.2.2 Determining the temperature correction ................................ 21
4.3 Determinations ................................................................... 23
4.3.1 Preparing the instrument and the accessories ......................... 23
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III
Table of contents
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4.3.2 Preparing the determination .................................................. 24
4.3.3 Cleaning the accessories ........................................................ 26
5 Operation and maintenance 28
5.1 General notes ...................................................................... 28
5.1.1 Care ...................................................................................... 28
5.1.2 Maintenance by Metrohm Service .......................................... 28
5.2 Quality management and qualification with Metrohm .. 29
6 Troubleshooting 30
6.1 Problems ............................................................................. 30
7 Technical specifications 34
7.1 General data ....................................................................... 34
7.2 Temperature control and measurement .......................... 34
7.3 External temperature sensor ............................................. 35
7.4 Conductivity measurement ................................................ 35
7.5 Gas flow regulation ............................................................ 36
7.6 USB interface ...................................................................... 36
7.7 Power socket ...................................................................... 36
7.8 Safety specifications ........................................................... 36
7.9 Electromagnetic compatibility (EMC) ................................ 37
7.10 Ambient temperature ......................................................... 37
7.11 Dimensions/Material .......................................................... 37
8 Conformity and warranty 38
8.1 Quality Management Principles ........................................ 38
8.2 Warranty (guarantee) ......................................................... 39
9 Accessories 41
Index 43
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IV
895 Professional PVC Thermomat
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Table of figures
Figure 1 Front 895 Professional PVC Thermomat ............................................. 6
Figure 2 Rear 895 Professional PVC Thermomat .............................................. 7
Figure 3 Instrument display ............................................................................. 8
Figure 4 Nitrogen supply connector .............................................................. 10
Figure 5 Equipping the reaction and measuring vessels ................................. 11
Figure 6 Mounting the air tube: correct - incorrect ........................................ 13
Figure 7 Instrument display with instrument name ........................................ 16
Figure 8 Instrument display with "no connection" symbol ............................. 16
Figure 9 Instrument display without instrument name and symbol ................ 17
Figure 10 Instrument display with serial number ............................................. 17
Figure 11 Measuring arrangement (schematic representation) ......................... 20
Figure 12 Assembling the reaction vessel for determining the temperature correc-
tion ................................................................................................. 21
Table of figures
895 Professional PVC Thermomat
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V
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1 Introduction
1.1 Instrument description
The 895 Professional PVC Thermomat is a computer-controlled measuring
instrument for determining the thermostability of PVC.
It is equipped with two heating blocks each with 4 measuring positions.
Each block can be heated individually, i.e., 4 samples can each be measured at two different temperatures or 8 samples at the same temperature. The measurements at the individual measuring positions can be
started individually for this.
The 895 Professional PVC Thermomat is controlled by means of the
StabNet computer software and a computer that is connected via the
USB interface. Up to 4 instruments can be controlled and monitored by
each computer, hence allowing a maximum of 32 samples to be analyzed
at the same time.
1 Introduction
StabNet determines the stability time fully automatically. Besides the
stability time, the so-called induction time can also be determined.
The results of the determinations are saved in a database together with all
method and determination data. Determinations can be searched for,
sorted, filtered, exported and printed in the Database program part.
Apart from graphically displaying individual and multiple curves, the software is also capable of conducting recalculations with changed parameters and extrapolating the results to a certain temperature.
1.2 About the documentation
CAUTION
Please read through this documentation carefully before putting the
instrument into operation. The documentation contains information
and warnings which the user must follow in order to ensure safe operation of the instrument.
895 Professional PVC Thermomat
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1
1.2 About the documentation
1.2.1 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key
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Cross-reference to figure legend
The first number refers to the figure number, the second to the instrument part in the figure.
Instruction step
Carry out these steps in the sequence shown.
WARNING
This symbol draws attention to a possible life-threatening hazard or risk of injury.
WARNING
This symbol draws attention to a possible hazard due
to electrical current.
WARNING
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
WARNING
This symbol draws attention to a possible biological
hazard.
CAUTION
This symbol draws attention to possible damage to
instruments or instrument parts.
NOTE
This symbol highlights additional information and
tips.
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2
895 Professional PVC Thermomat
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1.3 Safety instructions
1.3.1 General notes on safety
WARNING
This instrument may only be operated in accordance with the specifications in this documentation.
This instrument has left the factory in a flawless state in terms of technical
safety. To maintain this state and ensure non-hazardous operation of the
instrument, the following instructions must be observed carefully.
Hot reaction vessels
WARNING
1 Introduction
The reaction vessels can become very hot.
Avoid any contact with the hot reaction vessels. Place these in the vessel holders provided for cooling down.
Flammable substances
The heating block of the 895 Professional PVC Thermomat can be
heated to 229.9 °C.
Flammable substances may ignite at such temperatures.
Adjust the oven's maximum heating temperature to the sample that is
to be analyzed.
1.3.2 Electrical safety
The electrical safety when working with the instrument is ensured as part
of the international standard IEC 61010.
WARNING
WARNING
895 Professional PVC Thermomat
Only personnel qualified by Metrohm are authorized to carry out service
work on electronic components.
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3
1.3 Safety instructions
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WARNING
Never open the housing of the instrument. The instrument could be
damaged by this. There is also a risk of serious injury if live components
are touched.
There are no parts inside the housing which can be serviced or replaced
by the user.
Mains voltage
WARNING
An incorrect mains voltage can damage the instrument.
Only operate this instrument with a mains voltage specified for it (see
rear panel of the instrument).
Protection against electrostatic charges
WARNING
Electronic components are sensitive to electrostatic charges and can be
destroyed by discharges.
Do not fail to pull the mains cable out of the mains connection socket
before you set up or disconnect electrical plug connections at the rear
of the instrument.
1.3.3 Flammable solvents and chemicals
WARNING
All relevant safety measures are to be observed when working with
flammable solvents and chemicals.
￭ Set up the instrument in a well-ventilated location (e.g. fume cup-
board).
￭ Keep all sources of flame far from the workplace.
￭ Clean up spilled liquids and solids immediately.
￭ Follow the safety instructions of the chemical manufacturer.
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895 Professional PVC Thermomat
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1.3.4 Recycling and disposal
This product is covered by European Directive 2002/96/EC, WEEE – Waste
from Electrical and Electronic Equipment.
The correct disposal of your old equipment will help to prevent negative
effects on the environment and public health.
More details about the disposal of your old equipment can be obtained
from your local authorities, from waste disposal companies or from your
local dealer.
1 Introduction
895 Professional PVC Thermomat
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5
2.1 Front of the instrument
1
2
3
4
5
6
7
8
2 Overview of the instrument
2.1 Front of the instrument
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Figure 1 Front 895 Professional PVC Thermomat
Silicone tubing (6.1816.010)
1
For connecting the reaction vessel to the
measuring vessel.
Measuring vessel (6.1428.107)
3
FEP tubing 250 mm (6.1805.080)
5
For supplying air into the reaction vessel.
Reaction vessels (6.1429.040)
7
Measuring vessel cover (6.0913.130)
2
Contains an integrated conductivity measuring cell.
Instrument display
4
Displays the status of the instrument and the
individual measuring positions.
Reaction vessel cover (6.2753.107)
6
Start buttons
8
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6
895 Professional PVC Thermomat
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1
2
3
4
5
6
7 8 9 10
2.2 Rear of the instrument
2 Overview of the instrument
Figure 2 Rear 895 Professional PVC Thermomat
Electrode connector
1
For connecting the conductivity measuring
cell integrated in the measuring vessel cover.
Power switch
3
For switching the instrument on and off.
I = ON / 0 = OFF.
Power socket
5
Please note the important information on
the power connection (see Chapter 3.3,
page 15).
"Air/N2 in" connector
7
Pt100 connector
9
For connecting an external temperature sensor.
Air supply connector
2
For connecting the FEP tubing 250 mm.
Fuse holder
4
For replacing fuses (see Chapter 3.3.1, page
15).
Collection tube holder
6
For fastening the optional exhaust air collection tube (6.2757.000).
Type plate
8
Contains specifications concerning supply
voltage and serial number.
USB connector
10
For connecting the computer.
895 Professional PVC Thermomat
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2.3 Instrument display
895_1
1 2 3 4
9 8 7 6
10
5
2.3 Instrument display
Figure 3 Instrument display
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Measuring vessel cover red
1
This measuring position is not available for a
determination (determination is running or
multiple determination has not yet been
completed).
Instrument name
3
The instrument name display corresponds to
the configuration in StabNet.
Conductivity display block B
5
Shows the measured conductivity.
Dash (-) is displayed = Conductivity cannot
be displayed (no sensor connected or no
valid measuring signal).
Temperature display block B
7
Shows the temperature measured on block
B (gray background: heater switched off; red
background: temperature not stable; green
background: temperature stable).
Measuring vessel cover green
2
A determination can be started on this measuring position.
Measuring vessel cover gray
4
This measuring position is not available for
starting a determination (instrument not
connected to computer or no method loaded).
Gas flow display block B
6
Shows the gas flow measured on block B
(gray background: gas flow switched off;
white background: gas flow switched on).
Temperature display block A
8
Shows the temperature measured on block
A (gray background: heater switched off;
red background: temperature not stable;
green background: temperature stable).
Gas flow display block A
9
Shows the gas flow measured on block A
(gray background: gas flow switched off;
white background: gas flow switched on).
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8
Conductivity display block A
10
Shows the measured conductivity.
Dash (-) is displayed = Conductivity cannot
be displayed (no sensor connected or no
valid measuring signal).
895 Professional PVC Thermomat
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3 Installation
3.1 Setting up the instrument
3.1.1 Packaging
The instrument is supplied in highly protective special packaging together
with the separately packed accessories. Keep this packaging, as only this
ensures safe transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived complete and without damage by comparing it with the delivery note.
3.1.3 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
3 Installation
Place the instrument in a location of the laboratory which is suitable for
operation and free of vibrations and which provides protection against
corrosive atmosphere and contamination by chemicals to the extent possible.
The instrument should be protected against excessive temperature fluctuations and direct sunlight.
NOTE
In order to improve accessibility of the measuring positions, the instrument can also be placed on the optionally available turning ring
(6.2059.000).
895 Professional PVC Thermomat
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9
3.2 Mounting accessories
1
3.2 Mounting accessories
3.2.1 Mounting the external nitrogen (N2) supply
NOTE
Nitrogen has to be used for determining the thermostability of PVC.
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"Air/N2 in" connector
1
Figure 4 Nitrogen supply connector
The following accessories have to be mounted on the rear of the 895 Professional PVC Thermomat for the feed line:
Mount the accessories for the external nitrogen supply as follows:
1
Mounting the connection tubing
￭ Screw one end of the 6.1805.030 connection tubing (150 cm) to
the "Air/N2 in" connector on the rear of the 895 Professional
PVC Thermomat.
￭ Screw the 6.1808.020 connecting piece to the other end of the
connection tubing.
2
Connecting the gas supply
￭ Mount the gas supply of the nitrogen bottle to the tubing olive of
the 6.1808.020 connecting piece.
￭ Set the gas flow to 1.5 bar by means of the reducing valve on the
gas bottle.
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10
895 Professional PVC Thermomat
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
3.2.2 Assembling the reaction and measuring vessels
The following figure shows in detail how the accessory parts for measuring the thermostability have to be mounted and connected to one
another.
3 Installation
Figure 5 Equipping the reaction and measuring vessels
FEP tubing 250 mm (6.1805.080)
1
For supplying nitrogen into the reaction vessel.
Thread adapter M8/M6 (6.1808.090)
3
Air tube (6.2418.120)
5
Thread adapter M8/M6 connector
7
Reaction vessel (6.1429.040)
9
Opening "Out"
11
895 Professional PVC Thermomat
For removing the nitrogen from the measuring vessel.
Silicone tubing (6.1816.010)
2
For connecting the reaction vessel to the
measuring vessel.
O-ring (6.1454.040)
4
Tubing connector
6
For connecting the silicone tubing.
Reaction vessel cover (6.2753.107)
8
Tubing adapter M8/olive (6.1808.050)
10
For connecting the silicone tubing to the In
opening.
Opening "In"
12
For supplying the nitrogen to the measuring
vessel.
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11
3.2 Mounting accessories
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Label field
13
For attaching labels (e.g. 6.2250.000 laminated labels).
Measuring vessel cover (6.0913.130)
15
Contains an integrated conductivity measuring cell.
Electrode
17
Measuring vessel (6.1428.107)
19
Proceed as follows to mount the measuring vessel and the reaction vessel:
1
Mounting the measuring vessel cover
￭ Screw the PTFE cannula from above into the In opening of the
￭ Screw the M8/olive tubing adapter into the In opening of the
￭ Pour 50 - 80 mL of deionized water into the measuring vessel (the
￭ Place the measuring vessel cover onto the measuring vessel.
2
Mounting the reaction vessel cover
￭ Place the O-ring (6.1454.040) over the upper end of the air tube.
￭ Feed the air tube (6.2418.xx0) into the connector of the reaction
￭ Gently screw the M8/M6 thread adapter into the connector while
￭ Blow out the reaction vessel with nitrogen to free it from foreign
￭ Before putting the cover in place, briefly rotate the upper part of
￭ Place the reaction vessel cover on the reaction vessel.
Connector plug
14
PTFE cannula (6.1819.080)
16
For supplying the nitrogen to the measuring
solution.
Protection ring
18
measuring vessel cover.
measuring vessel cover.
exact quantity depends on the application).
vessel cover (6.2753.107) from above.
pressing the air tube against the thread adapter from below. Then
fix the air tube onto the reaction vessel cover by firmly tightening
the thread adapter.
substances (e.g. dust or cardboard shreds).
the reaction vessel in your hand. This slightly lubricates the glass
and facilitates removal of the covers after the measurement.
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12
NOTE
The air tube must be in a vertical position in the reaction vessel.
895 Professional PVC Thermomat
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Figure 6 Mounting the air tube: correct - incorrect
3.2.3 Inserting vessels / Establishing tubing connections
After you have assembled the reaction and measuring vessels, insert them
in the 895 Professional PVC Thermomat and establish the tubing connections (see Chapter 2.1, page 6) as follows:
1
Inserting the measuring vessel
￭ Fill distilled water into the measuring vessel.
￭ Place the measuring vessel cover onto the measuring vessel.
￭ Insert the measuring vessel into the openings provided on the 895
Professional PVC Thermomat. While doing so, carefully guide the
connector plug into the electrode connector.
￭ Connect the white silicone tubing to the M8/olive tubing adapter
of the measuring vessel cover.
2
Mounting the tubing for the air supply
￭ Screw the FEP tubing 250 mm to the air supply connections of
the 895 Professional PVC Thermomat.
3
Inserting the reaction vessel
￭ Fill the reaction vessel with the sample.
￭ After the required reaction temperature has been reached, insert
the reaction vessel with the mounted reaction vessel cover in the
openings provided on the 895 Professional PVC Thermomat.
4
Establishing the tubing connections
￭ Connect the white silicone tubing that is connected to the mea-
suring vessel cover to the tubing connector of the reaction vessel
cover.
￭ Screw the FEP tubing 250 mm which is connected to the M8/olive
tubing adapter of the 895 Professional PVC Thermomat to the
M8/M6 thread adapter of the reaction vessel cover.
3 Installation
895 Professional PVC Thermomat
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13
3.2 Mounting accessories
NOTE
The optional clear glass measuring vessels (6.1428.030) [Link target not
found in publication context!] may also be used in place of the polystyr-
ene measuring vessel (6.1428.107).
In contrast to the polystyrene vessel, the measuring vessel (6.1428.030)
can also be cleaned with acetone.
3.2.4 Mounting the exhaust air collection tube
The optional exhaust air collection tube (6.2757.000) [Link target not
found in publication context!] can be mounted on the 895 Professional
PVC Thermomat for targeted removal of the exhaust air.
NOTE
A total of 8 pieces of silicone tubing (6.1816.010) (220 mm) are
required in addition to the exhaust air collection tube.
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Proceed as follows to mount the collection tube:
1
Mounting the exhaust air collection tube
￭ Insert the exhaust air collection tube with both support pins into
the collection tube holders on the 895 Professional PVC Thermomat in such a way that the connector to the exhaust air removal is
located to the rear.
2
Connecting the measuring vessels
￭ Screw the M8/olive tubing adapter into the Out opening of the
measuring vessel cover.
￭ Connect one end of the silicone tubing to the M8/olive tubing
adapter.
￭ Insert the other end of the silicone tubing into the corresponding
opening on the collection tube.
￭ Seal the unused openings on the collection tube with the
enclosed stoppers.
3
Connecting the exhaust air collection tube
￭ Connect a suitable tubing to the connector of the exhaust air col-
lection tube and connect it to an active suction device (e.g. water
jet pump).
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14
895 Professional PVC Thermomat
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3.3 Power socket
There is a risk of fire if the instrument is operated with an incorrect
mains fuse!
Follow the regulations below for the mains connection.
3.3.1 Replacing fuses
The fuse holder of the 895 Professional PVC Thermomat contains two
fuses:
￭ Two slow-acting 4 A fuses
3 Installation
WARNING
WARNING
Ensure that the instrument is never put into operation with fuses of
another type, otherwise there is a risk of fire!
Proceed as follows to replace defective fuses:
1
Pulling out the power supply cable
￭ Pull the power supply cable out of the power socket of the 895
Professional PVC Thermomat.
2
Removing the fuse holder
￭ Release the fuse holder located on the rear of the instrument
above the power socket by pressing the catch spring and pull out
the holder completely.
3
Replacing the fuses
￭ Carefully remove the defective fuses from the fuse holder and
replace them with two new slow-acting 4 A fuses:
4
Inserting the fuse holder
￭ Push the fuse holder back into the instrument until it latches into
place.
895 Professional PVC Thermomat
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15
3.3 Power socket
3.3.2 Power supply cable and power socket
Power supply cable
The instrument is supplied with a three-core power supply cable and a
plug with protective grounding. If another plug has to be mounted, then
the yellow/green conductor (IEC standard) must be connected to the protective ground (protection class 1).
WARNING
Any interruption to the grounding within or outside the instrument can
make it dangerous!
Power socket
Plug the power supply cable into the power socket (2-5) of the 895 Professional PVC Thermomat.
3.3.3 Switching the instrument on and off
The 895 Professional PVC Thermomat is switched on and off using the
power switch (2-3). The instrument display is switched on when the
instrument is switched on.
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￭￭￭￭￭￭￭￭
16
Figure 7
Instrument display with instrument name
The instrument 895 Professional PVC Thermomat has been recognized by
the StabNet computer program and the instrument name entered has
been transmitted.
Figure 8
Instrument display with "no connection" symbol
The USB connection between the instrument 895 Professional PVC Thermomat and the computer has been interrupted and the corresponding
symbol is displayed.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
3 Installation
Figure 9 Instrument display without instrument name and symbol
The instrument 895 Professional PVC Thermomat is connected to the
computer but the StabNet computer program has been closed.
Figure 10
Instrument display with serial number
The instrument 895 Professional PVC Thermomat has been started, but
the StabNet computer program was not previously started.
3.4 Connecting a computer
3.4.1 Connecting the 895 Professional PVC Thermomat and the computer
NOTE
The StabNet computer program has to be installed before you can
connect the instrument to the computer.
The StabNet computer program allows you to control up to 4 instruments.
Connect and set up the 895 Professional PVC Thermomat as follows:
Establish a connection between the USB interface (2-10) of the 895
1
Professional PVC Thermomat and the required USB interface on the
computer using the USB cable (6.2151.130).
Start the StabNet computer program.
2
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
17
3.4 Connecting a computer
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Switch on the 895 Professional PVC Thermomat using the power
3
switch.
Wait for the instrument 895 Professional PVC Thermomat to be
4
detected and installed.
Enter the instrument information into the dialog fields of the 895
5
Professional PVC Thermomat configuration.
NOTE
You will find detailed information regarding the StabNet computer program in the Tutorial.
The instrument name entered in the configuration must appear on
the instrument display (3-3).
￭￭￭￭￭￭￭￭
18
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4 Operation
4.1 Thermomat method
The determination of the thermostability of polyvinyl chloride according to
part 1 of DIN 53 381 is based on the fact that PVC decomposes at
increased temperatures by releasing HCl. The hydrochloric acid that is
formed is transferred into the measuring vessel with a gas flow (usually
N2) and absorbed there in the measuring solution (distilled water). The
progress of the decomposition is registered by measuring the conductivity.
The stability time and the induction time are determined.
The stability time is defined as the time until a conductivity difference of
50 µS/cm has been achieved.
The induction time is the time that is required to reach the break point
of the conductivity curve. This method is used for testing PVC at all stages
of fabrication and for testing stabilizers.
4 Operation
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
19
4.2 Calibration functions
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Figure 11 Measuring arrangement (schematic representation)
Reaction vessel
1
Heating block
3
Conductivity measuring cell
5
4.2 Calibration functions
4.2.1 Determining the cell constant
The cell constants can be either entered manually or determined automatically by means of a defined standard solution, e.g. the conductivity standard 100 µS/cm (6.2324.010).
NOTE
You will find detailed information regarding the StabNet computer
program in the Tutorial.
Sample
2
Measuring vessel
4
Measuring solution
6
￭￭￭￭￭￭￭￭
20
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4.2.2 Determining the temperature correction
Temperature correction indicates the deviation of the current sample
temperature from the temperature of the heating block and forms part of
the method as a parameter.
It can be determined automatically with the calibrated, external temperature sensor.
4 Operation
Figure 12 Assembling the reaction vessel for determining the tempera-
FEP tubing 250 mm (6.1805.080)
1
For supplying air into the reaction vessel.
Thread adapter M8/M6 (6.1808.090)
3
Temperature sensor opening
5
For inserting the temperature sensor.
895 Professional PVC Thermomat
ture correction
Pt100 temperature sensor
2
(6.1111.010)
O-ring (6.1454.040)
4
Connector
6
For connecting the thread adapter M8/M6.
￭￭￭￭￭￭￭￭
21
4.2 Calibration functions
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Reaction vessel cover (6.2753.107)
7
Spacer (6.2042.040)
9
Preparing the determination of the temperature correction
The figure shows in detail how the accessory parts are to be assembled
for the determination of the temperature correction. Proceed as follows:
1
2
3
Air tube (6.2418.000)
8
Reaction vessel (6.1429.040)
10
Preparing the reaction vessel cover
￭ Mount the air tube on the reaction vessel cover.
￭ Clamp the first spacer at a distance of approx. 12 cm from the
lower end onto the air tube.
￭ Clamp the second spacer at a distance of approx. 5 cm from the
lower end onto the air tube.
￭ Insert the temperature sensor from above into the temperature
sensor opening and fasten it in the corresponding openings of the
spacers.
Preparing the reaction vessel
￭ Fill the reaction vessel with 6 g silicone oil (6.2326.000).
￭ Place the reaction vessel cover with the temperature sensor on
the reaction vessel.
￭ Push the temperature sensor all the way down (the sensor must
touch the vessel base).
Inserting and connecting the reaction vessel
￭ Insert the reaction vessel with the mounted reaction vessel cover
in the measuring position 2 or 3 of the required heating block.
￭ Screw one end of the FEP tubing 250 mm to the M8/M6 thread
adapter of the reaction vessel cover.
￭ Screw the other end of the FEP tubing to the corresponding con-
nector of the 895 Professional PVC Thermomat.
￭ Connect the temperature sensor to the Pt100 connector (2-9) on
the rear of the 895 Professional PVC Thermomat.
￭￭￭￭￭￭￭￭
22
NOTE
You will find detailed information regarding the StabNet computer
program in the Tutorial.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4.3 Determinations
4.3.1 Preparing the instrument and the accessories
The cleanliness of instrument and accessory parts is an indispensable prerequisite for reliable, reproducible and correct analysis results. Even
the slightest contamination could catalytically accelerate the oxidative
decomposition and lead to completely incorrect results. Therefore, always
observe the instructions for use of measuring and reaction vessels in this
chapter.
Check and prepare the instruments and vessels as follows:
1
Checking the positions for reaction vessels
￭ Check whether the positions in the heating block are clean and
empty.
Blow out contamination and dust in the positions with nitrogen.
If the instrument is not used, always seal the corresponding positions with the stoppers.
2
Filling the measuring vessels
4 Operation
NOTE
Only use measuring vessels and accessories which are absolutely clean and in a flawless condition.
￭ Fill the cleaned measuring vessels with 60 mL distilled water
each.
For analysis times of more than 24 h approx. 7 mL more distilled
water must be added per day to compensate for the evaporation
loss, so that the electrodes remain safely immersed.
3
Inserting the measuring vessels
￭ Place the clean measuring vessel covers equipped with a PTFE
cannula on the measuring vessels.
￭ Insert the measuring vessels with the measuring vessel covers into
the openings provided for this on the 895 Professional PVC Thermomat while carefully guiding the connector plugs of the cover
into the electrode connectors.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
23
4.3 Determinations
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4
Weighing in samples
NOTE
Use new reaction vessels and air tubes for each measurement. Blow out the reaction vessels with nitrogen before use so
that any adhering particles are removed.
￭ Weigh in 0.5 g of the samples in each reaction vessel.
5
Mounting the accessories
￭ Hold the upper edge of the reaction vessel in your hand (e.g. in
the recess between your thumb and index finger) and rotate the
glass once.
This serves to cover the degreased glasses with a light fat film so
that the vessel covers can be removed more easily after the determination.
￭ Insert an air tube into the connector of the reaction vessel cover,
fix it with the O-ring and fasten it by screwing in the M8/M6
thread adapter.
￭ Place the reaction vessel cover on the reaction vessel. Turn the
cover in such a way that the air tube is as close as possible to the
vessel wall.
￭ Connect the white silicone tubing to the tubing connector of the
reaction vessel cover.
￭ Place the prepared reaction vessel in the vessel holder.
4.3.2 Preparing the determination
1
Selecting the method (StabNet)
￭ In the Workplace program part, click on the symbol within the
block A area and select a Method for block A.
￭ If required, also select a method for block B.
Different methods with different temperatures and gas flows can
be selected for block A and block B.
￭￭￭￭￭￭￭￭
24
NOTE
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2
Starting the heater (StabNet)
￭ In the Workplace program part, click on the [Start] button for
Heater within the block A area.
￭ If required, also switch on the heater for Block B.
The color of the temperature display on the 895 Professional PVC
Thermomat changes to red during the heating phase.
The color of the temperature display on the 895 Professional PVC
Thermomat changes to green once the setpoint temperature has
been reached.
Heating period to 120 °C: approx. 45 min.
Heating period to 200 °C: approx. 60 min.
NOTE
If you wish to switch off the heating, click on the [Stop] button.
4 Operation
3
Enter sample identification (StabNet)
￭ Enter the sample identifications Ident and Info 1 - 3 for all sam-
ple positions used.
The entries for Ident and Info 1 - 3 can be selected from the Text
templates.
NOTE
The Info 2 and Info 3 info fields can be activated in the subwindow Properties - Sample data in the Method program
part.
4
Connecting and inserting reaction vessels
NOTE
The temperature defined in the method has to be reached before
you insert the reaction vessels, i.e., the temperature display has to
be green.
895 Professional PVC Thermomat
￭ Seal the unused positions with stoppers or empty reaction vessels
for protection against impurities.
￭￭￭￭￭￭￭￭
25
4.3 Determinations
￭ Connect the white silicone tubing which is connected to the reac-
tion vessel covers to the M8/olive tubing adapter of the measuring vessel covers.
￭ Screw the pieces of FEP tubing 250 mm to the M8/M6 thread
adapters of the reaction vessel covers and the air supply connectors of the 895 Professional PVC Thermomat.
￭ Insert the prepared reaction vessels into the recesses of the heat-
ing block.
￭ Press the start button to start the data recording immediately
after inserting each single reaction vessel.
4.3.3 Cleaning the accessories
1
Cleaning the measuring vessels and accessories
￭ Clean used measuring vessels after pouring off the measuring
solution with ethanol or 2-propanol (do not use acetone!) or in
the dishwasher.
Pre-clean with dishwashing detergent in the case of severe contamination.
￭ Pre-clean with dishwashing detergent in the case of severe con-
tamination.
￭ Thoroughly rinse with distilled water.
￭ Clean the measuring vessel covers, the PTFE cannula and the
electrodes with acetone or 2-propanol or in the dishwasher and
thoroughly rinse with distilled water.
Pre-clean with dishwashing detergent in the case of severe contamination.
Remove the protective ring to facilitate cleaning of the electrodes.
2
Cleaning the reaction vessels and accessories
￭ Dispose of used reaction vessels and air tubes and use new
reaction vessels and air tubes for the next measurement.
￭ Clean the reaction vessel covers with acetone or 2-propanol or
in the dishwasher and rinse with distilled water.
Pre-clean with dishwashing detergent in the case of severe contamination.
￭ Then heat the reaction vessel covers in the drying oven for 2
hours at 80 °C.
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
￭￭￭￭￭￭￭￭
26
NOTE
Replace the reaction vessel covers if they no longer sit tightly on
the reaction vessel or the material is brittle.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
3
Cleaning the tubing
￭ Clean the silicone tubing with acetone or 2-propanol or in the
dishwasher and rinse with distilled water.
Pre-clean with dishwashing detergent in the case of severe contamination.
￭ Then heat the silicone tubing in the drying oven for 2 hours at
80 °C.
4 Operation
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
27
5.1 General notes
5 Operation and maintenance
5.1 General notes
5.1.1 Care
The 895 Professional PVC Thermomat requires appropriate care. Excess
contamination of the instrument may result in functional disruptions and a
reduction in the service life of the otherwise sturdy mechanics and electronics.
Spilled chemicals and solvents should be removed immediately. Above all,
the plug connections on the rear of the instrument (in particular the
power socket) should be protected from contamination.
CAUTION
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Although this is largely prevented by design measures, the power plug
should be unplugged immediately if aggressive media have found their
way into the interior of the instrument to prevent serious damage to
the instrument electronics. In such cases, Metrohm Service must be
informed.
5.1.2 Maintenance by Metrohm Service
Maintenance of the 895 Professional PVC Thermomat is best carried out
as part of annual service, which is performed by specialist personnel from
Metrohm. If you are frequently working with caustic and corrosive chemicals, we recommend a shorter maintenance interval.
Metrohm Service offers every form of technical advice for maintenance
and service of all Metrohm instruments.
￭￭￭￭￭￭￭￭
28
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
5 Operation and maintenance
5.2 Quality management and qualification with Metrohm
Quality management
Metrohm offers you comprehensive support in implementing quality management measures for instruments and software.
Qualification
Please contact your local Metrohm representative for support in qualification of instruments and software. The Installation Qualification (IQ)
and Operational Qualification (OQ) are offered by Metrohm representatives as a service. They are carried out by trained employees using standardized qualification documents and in accordance with the currently
applicable requirements of the regulated industry.
Maintenance
The electronic and mechanical functional groups of Metrohm instruments
can and should be checked by specialist personnel from Metrohm as part
of a regular preventive maintenance schedule. Please ask your local
Metrohm representative regarding the precise terms and conditions
involved in concluding a corresponding maintenance agreement.
For detailed information on this topic, please visit www.metrohm.com.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
29
6.1 Problems
6 Troubleshooting
6.1 Problems
Problem Cause Remedy
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
No air flow can be
detected in the measuring vessel (it does
not bubble),
although an air flow
can be discerned in
the reaction vessel.
The connection is blocked. ￭ Check the tubing connector on the reac-
tion vessel cover for blockage and, if necessary, clean.
￭ Check the silicone tubing for blockage and,
if necessary, clean.
￭ Check the tubing adapter and the PTFE
cannula on the measuring vessel cover for
blockage and, if necessary, clean.
The connection is leaking. Check the silicone tubing for leakages and, if
necessary, replace.
The reaction vessel cover
does not sit correctly or
tightly enough.
￭ If the reaction vessel cover is oblique or not
completely mounted, press it all the way
down.
￭ If the reaction vessel cover is loose on the
reaction vessel despite correct assembly,
the cover has to be replaced.
The connection is wrongly
connected.
￭ Make sure that the PTFE cannula for air
supply is connected to the In opening of
the measuring vessel cover.
￭ Make sure that the silicone tubing is con-
nected to the tubing adapter that is mounted on the In opening.
￭ Make sure that the reaction vessel is con-
nected to the measuring vessel that
belongs to the corresponding measuring
position.
The induction times
are not reproducible
for multiple determinations.
￭￭￭￭￭￭￭￭
30
The reaction vessels used
are not clean.
The reaction vessels used
are scratched on the
inside.
￭ Clean the reaction vessels of particles (dust,
cardboard, etc.) with nitrogen before
weighing in the sample.
￭ Only use new, unused reaction vessels.
Only use new, unused reaction vessels.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Problem Cause Remedy
6 Troubleshooting
The stability times
are not reproducible
for multiple determinations.
The reaction vessel cover
does not sit correctly or
tightly enough.
The connection to the
measuring vessel is not
mounted correctly.
The temperature in different positions of a heating
block differs, as sample has
burnt on at one or more
places in the recess of the
heating block.
The sample is not homogenous.
The cell constant was not
determined or does not
correspond to the value
entered.
￭ If the reaction vessel cover is oblique or not
completely mounted, press it all the way
down.
￭ If the reaction vessel cover is loose on the
reaction vessel despite correct assembly,
the cover has to be replaced.
Ensure that no nitrogen can escape through
leaks when transferring from the reaction vessel to the measuring vessel.
If necessary, carefully remove contamination
from the cold heating block.
Homogenize the sample.
￭ Determine the cell constant.
￭ Make sure that the assignment of the con-
ductivity sensors is correct, so that the
determined cell constant actually corresponds to the measuring cell used.
￭ Make sure that the measuring cell is not
contaminated. Clean if necessary.
The induction time
is longer/shorter
than expected.
895 Professional PVC Thermomat
The conductivity measuring
cell is contaminated.
See also: The induction
times are not reproducible
for multiple determinations.
The temperature is not
selected correctly.
See also: The induction
times are not reproducible
for multiple determinations.
Check the measuring cell and, if necessary,
clean.
￭ Make sure that the correct method for the
determination has been selected.
￭ Check whether the Sample temperature
and the Temperature correction are
indicated correctly in the method.
￭￭￭￭￭￭￭￭
31
6.1 Problems
Problem Cause Remedy
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
The stability time is
longer/shorter than
expected.
The measurement
curves are extremely
noisy.
The conductivity change is
not correctly defined.
See also: The stability times
are not reproducible for
multiple determinations.
See also: The induction
time is longer/shorter than
expected.
The nitrogen supply for the
measuring solution is directed to the conductivity
measuring cell.
Gas bubbles adhere to the
conductivity measuring cell
during measurement.
Make sure that the value defined for the conductivity change in the method is correct.
Loosen the tubing adapter on the measuring
vessel cover and turn the PTFE cannula such
that the nitrogen is no longer directed to the
electrode and fix it in this position.
￭ Make sure that the measuring cell is clean
and free of fat. If necessary, clean thoroughly.
￭ In some cases, ultrapure water contains a
large proportion of dissolved air. In this
case, degas the ultrapure water before the
measurement for 5 to 10 min in a vacuum.
The curve shows a
step which means
that the induction
time is no longer
determined correctly.
The curve shows a
step at the start of
the measurement,
which has not occurred in previous
measurements.
Side reactions occur at the
start or during the measurement. These reactions
cause the conductivity in
the measuring cell to rise.
The reaction vessel cover
and/or the tubing still contain residues from previous
measurements. These residues are then transferred
to the measuring vessel
with the flow of warm air
during a new measurement.
￭ Use the Evaluation suppression in the
method.
￭ In addition to Endpoint(s) activate also
Conductivity (e.g. 200 µS/cm) as stop cri-
terion in the method and select the Stop
once all the criteria have been fulfilled
option. The evaluation parameters can be
optimized on the basis of this curve, or the
curve can be evaluated manually.
￭ Increase the Evaluation sensitivity
method parameter.
￭ Thoroughly clean the reaction vessel cover
and the silicone tubing.
￭ Replace the reaction vessel cover and the
silicone tubing from time to time.
￭￭￭￭￭￭￭￭
32
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Problem Cause Remedy
6 Troubleshooting
The induction time
is not evaluated
automatically,
although a significant break point can
be noticed in the
curve.
The Evaluate induction
time option is deactivated
in the method.
The Evaluation suppres-
sion option preventing the
evaluation of the curve in
the corresponding time
period is defined in the
method.
Automatic detection of the
induction time is not yet
possible.
The curve progression is
too flat, with the result
that automatic detection
of the induction time is not
possible.
An inappropriately high
value was used in the
method for the Evalua-
tion sensitivity. This value
makes a curve evaluation
impossible.
Activate the evaluation of the induction time in
the method.
Deactivate the corresponding option in the
method.
Keep the determination running until the
induction time is automatically found.
￭ Reduce the Evaluation sensitivity
method parameter.
￭ Evaluate the curves manually using tan-
gents.
Enter a lower value (e.g. 1.0) for the Evalua-
tion sensitivity option in the method.
The measurement
aborts without an
endpoint being
found.
The measurement has been
stopped manually.
A time or conductivity
defined as a stop criterion
in the method is reached
before the endpoint.
Keep the measurement running until the endpoint is automatically found.
￭ Activate the Stop once all the criteria
have been fulfilled option in the method.
￭ Increase the value for time or conductivity.
￭ Deactivate time or conductivity as stop cri-
terion.
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭
33
7.1 General data
7 Technical specifications
7.1 General data
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Number of instruments that can be
connected
Number of samples per instrument
Sample amount 0.5 gram
1 - 4
1 - 8 (4 each per heating block)
7.2 Temperature control and measurement
Sample temperature setting range
Temperature correction
Temperature measuring range
Resolution 0.1 °C
50 - 220 °C
±0 - 9.9 °C
(Can be entered manually or determined automatically using the external temperature sensor.)
0 - 300 °C
Maximum deviation of the heating
block temperature
from the set value
(50 - 220 °C)
Reproducibility of
the set temperature
Maximum temperature difference
between different
measuring positions per block
Temperature fluctuations
±0.3 °C
typ. ±0.2 °C
typ. < 0.3 °C
typ. < 0.1 °C
(With operating temperature attained, reaction vessels inserted and
identically filled and 20 L/h air throughput.)
￭￭￭￭￭￭￭￭
34
895 Professional PVC Thermomat
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
7 Technical specifications
Shutdown temperature
Heating time for
the instrument
External temperature of the instrument
260 ± 15 °C
(Resetting and troubleshooting carried out by Metrohm Service.)
approx. 45 min (from 20 °C to 120 °C)
approx. 60 min (from 20 °C to 220 °C)
< 50 °C
(at operating temperature 220 °C)
7.3 External temperature sensor
Sensor
4-pin for sensor Pt100 (6.1111.010)
7.4 Conductivity measurement
Sensor
Electrode Conductivity measuring cell with 2 stainless steel electrodes
Measuring principle
Conductivity measuring cell, integrated in the measuring vessel cover
(6.0913.130)
AC current measurement with 1 kHz frequency and approx. 1.0 V
amplitude (peak to peak)
Cell constant 1.0 - 1.2
(The exact value can be entered manually or determined automatically.)
Measuring range 0 - 400 µS/cm (at c = 1)
Resolution 0.1 µS/cm
Display range 0 - 999 µS/cm
Maximum deviation from measured value
±(0.5 µS/cm + 1% of the measured value)
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7.5 Gas flow regulation
7.5 Gas flow regulation
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Volumetric flow
range
Maximum deviation from the set
range
1 - 25 L/h at 25 °C and 1,013 mbar
±(0.25 L/h + 5% of the measured value)
7.6 USB interface
USB connector
USB plug type B
7.7 Power socket
Nominal voltage
range
Frequency 50 and 60 Hz (autosensing)
Power consumption
Fuse Diameter 5 mm, length 20 mm
100 - 120 V and 220 - 240 V ± 10% (autosensing)
450 VA
4.0 ATH (slow-acting)
max
7.8 Safety specifications
This instrument fulfills the following electrical safety requirements:
CE marking in accordance with the EU directives:
￭ 2006/95/EC (Low Voltage Directive, LVD)
￭ 2004/108/EC (EMC Directive, EMC)
Design and testing According to EN/IEC/UL 61010-1, CSA-C22.2 No. 61010-1 protection
class I, EN/IEC 61010-2-010, EN/IEC 60529, degree of protection IP20.
Safety instructions This document contains safety instructions which have to be followed
by the user in order to ensure safe operation of the instrument.
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7.9 Electromagnetic compatibility (EMC)
Emission Standards fulfilled:
￭ EN/IEC 61326-1
￭ EN/IEC 61000-6-3
￭ EN 55011 / CISPR 11
￭ EN/IEC 61000-3-2
￭ EN/IEC 61000-3-3
Immunity Standards fulfilled:
￭ EN/IEC 61326-1
￭ EN/IEC 61000-6-2
￭ EN/IEC 61000-4-2
￭ EN/IEC 61000-4-3
￭ EN/IEC 61000-4-4
￭ EN/IEC 61000-4-5
￭ EN/IEC 61000-4-6
￭ EN/IEC 61000-4-11
￭ EN/IEC 61000-4-14
￭ EN/IEC 61000-4-28
7 Technical specifications
7.10 Ambient temperature
Nominal function
range
Storage –20 - +70 °C
Transport –40 - +70 °C
+5 - +45 °C
(at 20 - 80% humidity)
7.11 Dimensions/Material
Width
Height 277 mm (without accessories)
Depth 393 mm
Weight 15.4 kg (without accessories)
Cover material Baydur®110 FR-6 with flame retardation for fire class UL94VO, CFC-
Base material Steel sheet, coated
383 mm
free
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8.1 Quality Management Principles
8 Conformity and warranty
8.1 Quality Management Principles
Metrohm Ltd. holds the ISO 9001:2000 Certificate, registration number
10872-02, issued by SQS (Swiss Association for Quality and Management
Systems). Internal and external audits are carried out periodically to assure
that the standards defined by Metrohm’s QM Manual are maintained.
The steps involved in the design, manufacture and servicing of instruments
are fully documented and the resulting reports are archived for ten years.
The development of software for PCs and instruments is also duly documented and the documents and source codes are archived. Both remain
the possession of Metrohm. A non-disclosure agreement may be asked to
be provided by those requiring access to them.
The implementation of the ISO 9001:2000 quality management system is
described in Metrohm’s QM Manual, which comprises detailed instructions on the following fields of activity:
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Instrument development
The organization of the instrument design, its planning and the intermediate controls are fully documented and traceable. Laboratory testing
accompanies all phases of instrument development.
Software development
Software development occurs in terms of the software life cycle. Tests are
performed to detect programming errors and to assess the program’s
functionality in a laboratory environment.
Components
All components used in the Metrohm instruments have to satisfy the quality standards that are defined and implemented for our products. Suppliers of components are audited by Metrohm as the need arises.
Manufacture
The measures put into practice in the production of our instruments guarantee a constant quality standard. Production planning and manufacturing
procedures, maintenance of production means and testing of components, intermediate and finished products are prescribed.
Customer support and service
Customer support involves all phases of instrument acquisition and use by
the customer, i.e. consulting to define the adequate equipment for the
analytical problem at hand, delivery of the equipment, user manuals, train-
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ing, after-sales service and processing of customer complaints. The
Metrohm service organization is equipped to support customers in implementing standards such as GLP, GMP, ISO 900X, in performing Operational Qualification and Performance Verification of the system components or in carrying out the System Validation for the quantitative determination of a substance in a given matrix.
8.2 Warranty (guarantee)
Metrohm guarantees that the deliveries and services it provides are free of
defects in materials, design or manufacturing.
The general warranty period is 36 months (exclusions below) from the
date of delivery, or 18 months in the event of continuous operation. The
warranty remains valid on the condition that the servicing is provided by a
service organization authorized by Metrohm at defined intervals and with
a defined scope.
The warranty period for anion suppressors of the type "MSM" is 120
months from the date of delivery or 60 months in the case of continuous
operation.
8 Conformity and warranty
The warranty period for IC separation columns is 90 days after start-up.
For third-party components that are recognizable as such, the manufacturer's warranty regulations apply.
For instruments sold under the Metrohm NIRSystems brand, a full 16month warranty is applicable. In the event of continuous operation, the
warranty period is reduced by half.
Consumables and materials with limited storage life and glass breakage in
the case of electrodes or other glass parts are excluded from the warranty.
Warranty claims cannot be asserted if the ordering party has failed to
meet its payment obligations according to schedule.
During the warranty period, Metrohm undertakes either to replace free of
charge or to credit the purchaser for any modules or components that can
be shown to be faulty. Any transport or customs fees that may apply are
the responsibility of the ordering party.
The precondition for this is that the ordering party has to specify the article number, the article designation, an adequate error description, the
delivery date and (if applicable) the serial number or chip data in the Support Tracker. Metrohm then decides whether a replacement or a credit
note is to be issued or whether the faulty part has to be returned using
the Return Material Authorization (RMA). If a replacement or credit note is
issued, the ordering party undertakes to store the faulty part for at least
24 months in accordance with the current storage directives (in compliance with ESD guidelines) and to hold it in readiness for onsite inspection
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8.2 Warranty (guarantee)
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or for return shipment to Metrohm. Metrohm reserves the right to invoice
the ordering party for these articles, including retroactively, in the event of
noncompliance with these preconditions.
The same warranty periods that are specified for a corresponding new
part apply to parts that are replaced or repaired within the above-mentioned warranty periods. However, replacement or repair of a part does
not extend the warranty period of the entire system.
Deficiencies arising from circumstances that are not the responsibility of
Metrohm, such as improper storage or improper use, etc., are expressly
excluded from the warranty.
Metrohm also offers a 120-month spare parts availability guarantee and a
60-month PC software support warranty, calculated from the date on
which the product is withdrawn from the market. The content of this warranty is the ability of the customer to obtain functioning spare parts or
appropriate software support at market prices during the time of the warranty period. This does not apply for software products sold under the
Metrohm NIRSystems brand.
If Metrohm AG is unable to meet this obligation due to circumstances
beyond the control of Metrohm AG, then the ordering party shall be
offered alternative solutions at preferential conditions.
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9 Accessories
Up-to-date information on the scope of delivery and optional accessories
for your instrument can be found on the Internet.
When you receive your new instrument, we recommend downloading
the accessories list from the Internet, printing it out and keeping it
together with the manual for reference purposes.
Instruments currently sold
If you do not know the article number of your instrument, proceed as follows:
Downloading the accessories list
9 Accessories
NOTE
Go to the Metrohm website http://www.metrohm.com/com.
1
2
Click on .
The Search webpage will be displayed.
Enter a search term relating to the instrument into the search field
3
and click on Find.
The search results will be displayed.
In the search results, select the Devices tab (if it is not already
4
selected) and then click on the Metrohm article number of the
required instrument (e.g. 2.852.0050).
The page with information pertaining to the searched article is displayed.
Select the Parts tab.
5
The complete list of accessories with the scope of delivery and the
optional accessories will be displayed.
6
Click on .
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The Partslists webpage will be displayed.
Select the desired output language.
7
With the article number entered, click on the command Generate
8
PDF.
The PDF file with the accessories data will be created in the language
selected.
Direct access for all instruments
If you are unable to find your instrument using the search as described
above, this may be due to the instrument not being sold anymore. Using
the article number, you can download accessories lists for all instruments
as follows:
Downloading the accessories list
Type http://partslists.metrohm.com into your Internet browser.
1
The Partslists webpage will be displayed.
Select the desired output language.
2
Enter the article number and click on the Generate PDF command.
3
The PDF file with the accessories data will be created in the language
selected.
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Index
Index
A
Accessories
Mount ................................ 10
C
Cell constant
Determine .......................... 20
Clean
Accessories ......................... 26
Measuring vessel ................ 26
Reaction vessel ................... 26
Tubing ................................ 27
Computer
Connect ............................. 17
Conductivity measurement
Measuring range ................ 35
Resolution .......................... 35
D
Determination
Prepare ............................... 24
E
Electrostatic charge .................... 4
External nitrogen supply
Mount accessories .............. 10
External temperature ................ 35
F
Fuse
Replace .............................. 15
G
Gas flow
Range ................................. 36
Guarantee ................................ 39
H
Heater
Range ................................. 34
Start manually .................... 25
Switch off ........................... 25
Heating period ......................... 25
Heating time ............................ 35
I
Installation qualification ............ 29
M
Mains voltage ............................. 4
Maintenance agreement .......... 29
Measuring vessel
Assemble ............................ 11
O
Operational qualification .......... 29
Q
Quality management ................ 29
R
Reaction vessel
Assemble ............................ 11
S
Safety instructions ...................... 3
Sample identification
Enter .................................. 25
Service ....................................... 3
Shutdown temperature ............ 35
Switch on ................................. 16
T
Temperature correction
Determine .......................... 21
Temperature measurement
Measuring range ................ 34
Reproducibility .................... 34
Resolution .......................... 34
W
Warranty .................................. 39
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