Metrohm 895 User Manual
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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