Metrohm 896 Manual de usuario
IC Professional Detector
896 Professional Detector – Conductivity & Amperometry
Manual
8.896.8006EN
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
www.metrohm.com
IC Professional Detector
896 Professional Detector – Conduc-
tivity & Amperometry
2.896.0030
Manual
8.896.8006EN 10.2012 zst
Teachware
Metrohm AG
CH-9100 Herisau
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been
checked with great care, errors cannot be entirely excluded. Should you
notice any mistakes please send us your comments using the address
given above.
Documentation in additional languages can be found on
http://documents.metrohm.com.
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
2.896.0030 896 Professional Detector – Conductivity & Amperometry ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 Intended use ......................................................................... 2
1.3 Safety instructions ................................................................ 2
1.3.1 General notes on safety ........................................................... 2
1.3.2 Electrical safety ........................................................................ 2
1.3.3 Tubing and capillary connections ............................................. 3
1.3.4 Flammable solvents and chemicals ........................................... 4
1.3.5 Recycling and disposal ............................................................. 4
1.4 About the documentation ................................................... 4
1.4.1 Content and scope .................................................................. 4
1.4.2 Symbols and conventions ........................................................ 5
2 Overview of the instrument 6
2.1 Front ...................................................................................... 6
2.2 Rear ........................................................................................ 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
3.1.4 Proposed setup ........................................................................ 9
3.2 Mounting base tray and bottle holder (optional) ............ 10
3.2.1 Removing / mounting the base tray ....................................... 10
3.2.2 Removing / mounting the bottle holder ................................. 12
3.3 Conductivity detector ......................................................... 15
3.3.1 Connect the detector capillaries ............................................. 15
3.4 Amperometric detector ...................................................... 18
3.5 Connecting the instrument ................................................ 18
3.5.1 Connecting the instrument to the PC ..................................... 18
3.5.2 Connecting the instrument to power supply .......................... 18
4 Start-up 20
4.1 Instrument test with dummy cell ...................................... 20
4.2 Testing the leak sensor ...................................................... 22
4.3 Testing the preheating capillary ....................................... 22
4.4 Testing the detector output capillary ............................... 23
Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 2.896.0030 896 Professional Detector – Conductivity & Amperometry
4.5 Testing the measuring cell ................................................. 25
4.6 Deaerating the measuring cell .......................................... 27
4.7 Connecting the electrode connection cables ................... 28
4.8 Attaching the front lid ....................................................... 30
5 Operation and maintenance 31
5.1 General notes ...................................................................... 31
5.1.1 Care ...................................................................................... 31
5.1.2 Maintenance by Metrohm Service .......................................... 31
5.1.3 Operation .............................................................................. 31
5.1.4 Shutting down ...................................................................... 32
5.2 Conductivity detector ......................................................... 32
5.2.1 Maintenance ......................................................................... 32
5.2.2 Remedying blockage ............................................................. 32
5.3 Amperometric detector ...................................................... 33
5.3.1 Maintenance ......................................................................... 33
5.3.2 Preheating capillary maintenance ........................................... 33
5.4 Quality Management and validation with Metrohm ....... 34
6 Troubleshooting 35
6.1 Problems with the hardware ............................................. 35
6.2 Problems with the baseline ............................................... 35
6.3 General remarks regarding sensitivity fluctuations ......... 38
6.4 Problems with sensitivity ................................................... 38
6.5 Problems with the pressure ............................................... 39
6.6 Problems with the measuring signal ................................ 39
6.7 Problems with the chromatogram .................................... 40
6.8 Other problems ................................................................... 41
6.9 Systematic error diagnostics ............................................. 42
7 Technical specifications 44
7.1 Reference conditions .......................................................... 44
7.2 Conductivity detector ......................................................... 44
7.3 Amperometric detector ...................................................... 45
7.4 Power connection ............................................................... 46
7.5 Leak sensor ......................................................................... 46
7.6 Ambient conditions ............................................................ 46
7.7 Housing ............................................................................... 47
7.8 Interfaces ............................................................................. 47
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2.896.0030 896 Professional Detector – Conductivity & Amperometry ￭￭￭￭￭￭￭￭ V
7.9 Safety specifications ........................................................... 47
7.10 Electromagnetic compatibility (EMC) ................................ 48
8 Warranty (Guarantee) 49
9 Accessories 51
9.1 Scope of delivery ................................................................ 51
9.2 Optional accessories ........................................................... 54
Index 59
Table of figures ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
VI ￭￭￭￭￭￭￭￭ 2.896.0030 896 Professional Detector – Conductivity & Amperometry
Table of figures
Figure 1 Front – Front lid attached .................................................................. 6
Figure 2 Front – Front lid removed .................................................................. 7
Figure 3 Rear .................................................................................................. 8
Figure 4 Connection detector – separation column ....................................... 16
Figure 5 Connection detector – suppressor ................................................... 17
Figure 6 Connection detector – MCS ............................................................ 17
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2.896.0030 896 Professional Detector – Conductivity & Amperometry ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 896 Professional Detector – Conductivity & Amperometry is
an intelligent Stand-Alone Detector equipped with a high-performance
conductivity detector and an amperometric detector.
As a stand-alone detector, it can for example be combined with instru-
ments of the 850 Professional IC family for which all available detector
connectors have already been assigned to conductivity detectors (AnCat
systems or other multi-channel systems) and be used for the determina-
tion of electroactive substances in the mobile phase.
Multiple detector installations can be implemented with the 896 Professio-
nal Detector – Conductivity & Amperometry, even with the instruments of
the Compact IC family (881 and 882) and with the 883 Basic IC plus,
which possess only one detector connector which would normally be
occupied by a conductivity detector. Applications can thus be carried out
that require not only conductivity detection but also amperometric detec-
tion.
The 896 Professional Detector – Conductivity & Amperometry is a stand-
alone detector that combines the advantages of the IC Conductivity
Detector and the IC Amperometric Detector with the combination oppor-
tunities of the 850 Professional IC instruments. It is directly controlled by
the MagIC Net™ software.
872 Extension Modules, 891 Analog Out and 800 Dosinos, Remote Boxes,
etc. can all be operated through the 896 Professional Detector – Conduc-
tivity & Amperometry. This opens up the flexibility of Metrohm IC systems
considerably.
The instrument is comprised of the following modules:
Conductivity detector
The conductivity detector continuously measures the conductivity of the
liquid passing through and indicates the measured values in digital form
(DSP – Digital Signal Processing). The conductivity detector exhibits out-
standing thermal stability and thus guarantees reproducible measuring
conditions.
Amperometric detector
With the 896 Professional Detector – Conductivity & Amperometry, elec-
troactive substances can be determined in the mobile phase of an IC sys-
tem. Amperometric methods are used for the determination, which com-
1.2 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 2.896.0030 896 Professional Detector – Conductivity & Amperometry
bine an outstanding sensitivity with a high degree of selectivity. The instal-
led potentiostat generates the voltages for the direct current amperometry
(DC), for the pulse amperometry (PAD) and the flexible integrated pulse
amperometry (flexIPAD) as well as for the recording of cyclovoltammo-
grams. The installed preheating capillary ensures a constant eluent tem-
perature on the cell.
1.2 Intended use
The 896 Professional Detector – Conductivity & Amperometry is used as
an independent detector in an IC system. With its two different detector
types, it is used on the one hand for the precise measurement of conduc-
tivity during ion chromatography determination of anions and cations and
on the other hand for the determination of electroactive substances in the
mobile phase of an IC or general liquid chromatography system.
The present instrument is used for working with chemicals and flammable
samples. Usage of the 896 Professional Detector – Conductivity & Amper-
ometry therefore requires the user to have basic knowledge and experi-
ence in the handling of toxic and caustic substances. Knowledge with
respect to the application of the fire prevention measures prescribed for
laboratories is also mandatory.
1.3 Safety instructions
1.3.1 General notes on safety
Warning
This instrument may only be operated in accordance with the specifica-
tions 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.
1.3.2 Electrical safety
The electrical safety when working with the instrument is ensured as part
of the international standard IEC 61010.
Warning
Only personnel qualified by Metrohm are authorized to carry out service
work on electronic components.
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