Metrohm 945 Professional Detector Vario User manual
945 Professional Detector Vario
945 Professional Detector Vario – Conductometry
Manual
8.945.8001EN / 2020-03-13
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
www.metrohm.com
945 Professional Detector Vario
945 Professional Detector Vario –
Conductometry
2.945.0010
Manual
8.945.8001EN / 2020-03-13
Technical Communication
Metrohm AG
CH-9100 Herisau
This documentation is protected by copyright. All rights reserved.
This documentation has been prepared with great care. However, errors
can never be entirely ruled out. Please send comments regarding possible
errors to the address above.
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
2.945.0010 945 Professional Detector Vario – Conductometry ￭￭￭￭￭￭￭￭ 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 ........................................................................................ 7
3 Installation 8
3.1 Base tray and bottle holder ................................................. 8
3.1.1 Basic information on base tray and bottle holder ..................... 8
3.1.2 Mounting base tray and bottle holder (optional) ...................... 8
3.2 Conductivity detector ......................................................... 13
3.2.1 Connecting the detector capillaries ........................................ 13
3.3 Connecting the instrument to a computer ....................... 16
3.4 Connecting the instrument to the power grid ................. 16
4 Operation and maintenance 18
4.1 General notes ...................................................................... 18
4.1.1 Care ...................................................................................... 18
4.1.2 Maintenance by Metrohm Service .......................................... 18
4.1.3 Operation .............................................................................. 18
4.1.4 Shutting down ...................................................................... 19
4.2 Conductivity detector ......................................................... 19
4.2.1 Maintenance ......................................................................... 19
4.2.2 Remedying blockage ............................................................. 19
5 Troubleshooting 21
5.1 Problems and their solutions ............................................. 21
Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry
6 Technical specifications 22
6.1 Reference conditions .......................................................... 22
6.2 Conductivity detector ......................................................... 22
6.3 Power connection ............................................................... 23
6.4 Leak sensor ......................................................................... 23
6.5 Ambient conditions ............................................................ 23
6.6 Housing ............................................................................... 24
6.7 Interfaces ............................................................................. 24
7 Accessories 25
Index 26
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
2.945.0010 945 Professional Detector Vario – Conductometry ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front ................................................................................................. 6
Figure 2 Rear .................................................................................................. 7
Figure 3 Removing the base tray ..................................................................... 9
Figure 4 Removing the bottle holder ............................................................. 11
Figure 5 Mounting the bottle holder ............................................................. 12
Figure 6 Connection detector–separation column ......................................... 14
Figure 7 Connection detector–suppressor ..................................................... 15
Figure 8 Connection detector–MCS .............................................................. 15
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
2.945.0010 945 Professional Detector Vario – Conductometry ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 945 Professional Detector Vario – Conductometry is an intelli-
gent stand-alone detector equipped with a high-performance conductivity
detector.
As a stand-alone detector, it can be combined with instruments such as
those of the 940 Professional IC Vario family for which all available detec-
tor connectors have already been assigned to conductivity detectors
(AnCat systems or other multi-channel systems) when an additional con-
ductivity detector is required.
The 945 Professional Detector Vario – Conductometry allows AnCat sys-
tems or other multi-channel systems to be implemented also with the
instruments of the 930 Compact IC Flex family and with the 883 Basic IC
plus, which are equipped with only one detector connector, which is nor-
mally occupied by a conductivity detector.
The 942 Extension Module Vario, 891 Professional Analog Out and 800
Dosinos, Remote Boxes, etc. can all be operated through the 945 Profes-
sional Detector Vario – Conductometry. 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 outputs the measured values in digital form
(DSP – Digital Signal Processing). The conductivity detector exhibits out-
standing thermal stability and thus guarantees reproducible measuring
conditions.
1.2 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 2.945.0010 945 Professional Detector Vario – Conductometry
1.2 Intended use
The 945 Professional Detector Vario – Conductometry is used as an inde-
pendent conductivity detector in an IC system. It is used for the precise
measurement of the conductivity during the ion chromatographic determi-
nation of cations and anions.
The present instrument is used for working with chemicals and flammable
samples. Therefore, the use of the 945 Professional Detector Vario – Con-
ductometry requires the user to have basic knowledge and experience in
handling toxic and caustic substances. Knowledge regarding the applica-
tion of fire prevention measures prescribed for laboratories is also manda-
tory.
1.3 Safety instructions
1.3.1 General notes on safety
WARNING
Operate this instrument only according to the information contained in
this documentation.
This instrument 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.
This manual suits for next models
2
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