Metrohm 944 Bedienungsanleitung
944 Professional UV/VIS Detector Vario
2.944.0010
Manual
8.944.8001EN / 2019-09-27
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
www.metrohm.com
944 Professional UV/VIS Detector
Vario
2.944.0010
Manual
8.944.8001EN / 2019-09-27
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
944 Professional UV/VIS Detector Vario (2.944.0010) ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 Intended use ......................................................................... 1
1.3 About the documentation ................................................... 1
1.3.1 Symbols and conventions ........................................................ 2
1.4 Safety instructions ................................................................ 3
1.4.1 General notes on safety ........................................................... 3
1.4.2 Electrical safety ........................................................................ 3
1.4.3 Tubing and capillary connections ............................................. 4
1.4.4 Flammable solvents and chemicals ........................................... 4
1.4.5 Recycling and disposal ............................................................. 4
2 Overview of the instrument 6
2.1 Front ...................................................................................... 6
2.2 Rear ........................................................................................ 7
3 Installation 8
3.1 Setting up the instrument .................................................... 8
3.1.1 Packaging ................................................................................ 8
3.1.2 Checks .................................................................................... 8
3.1.3 Location .................................................................................. 8
3.2 Setup configurations ............................................................ 8
3.3 Base tray and bottle holder ............................................... 10
3.3.1 Basic information on base tray and bottle holder ................... 10
3.3.2 Mounting base tray and bottle holder (optional) .................... 10
3.4 Installing the flow-through cell ......................................... 15
3.5 Connecting the flow-through cell ..................................... 17
3.6 Connecting the instrument ................................................ 19
3.6.1 Connecting the instrument to a computer ............................. 19
3.6.2 Connecting the instrument to the power grid ........................ 19
4 Start-up 21
5 Operation 23
6 Operation and maintenance 24
6.1 Care ...................................................................................... 24
6.2 Maintenance by Metrohm Service .................................... 24
6.3 Door ..................................................................................... 25
Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 944 Professional UV/VIS Detector Vario (2.944.0010)
6.4 Replacing the UV lamp ....................................................... 25
6.5 Replacing the VIS lamp ...................................................... 28
6.6 Adjusting the lamp settings .............................................. 28
6.7 Cleaning the flow-through cell .......................................... 29
7 Troubleshooting 33
7.1 Problems and their solutions ............................................. 33
8 Technical specifications 34
8.1 Reference conditions .......................................................... 34
8.2 UV/VIS detector .................................................................. 34
8.3 Lamps .................................................................................. 36
8.4 Ambient conditions ............................................................ 36
8.5 Housing ............................................................................... 36
8.6 Weight ................................................................................. 37
8.7 Power connection ............................................................... 37
8.8 Interfaces ............................................................................. 37
9 Accessories 38
Index 39
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
944 Professional UV/VIS Detector Vario (2.944.0010) ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front ................................................................................................. 6
Figure 2 Rear .................................................................................................. 7
Figure 3 Setup configurations ......................................................................... 9
Figure 4 Removing the base tray ................................................................... 11
Figure 5 Mounting the base tray ................................................................... 12
Figure 6 Removing the bottle holder ............................................................. 13
Figure 7 Mounting the bottle holder ............................................................. 14
Figure 8 Cell block ........................................................................................ 15
Figure 9 Connecting the detector input ......................................................... 17
Figure 10 Connecting the detector outlet ........................................................ 18
Figure 11 Intensity spectrum OK ..................................................................... 22
Figure 12 Lamp intensity too high ................................................................... 22
Figure 13 Operating hours counter ................................................................. 25
Figure 14 Lamp module .................................................................................. 25
Figure 15 Lamp module – without UV lamp .................................................... 27
Figure 16 Flow-through cell – parts ................................................................. 31
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
944 Professional UV/VIS Detector Vario (2.944.0010) ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 944 Professional UV/VIS Detector Vario is an independent instru-
ment for the photometric determination of light-absorbing substances in
the UV/VIS range. It serves as UV/VIS detector within an ion chromatogra-
phy system.
The 944 Professional UV/VIS Detector Vario is operated with the
MagIC Net software. It is connected to a PC on which MagIC Net is
installed with a USB cable. The software detects the instrument automati-
cally and checks its functional readiness. MagIC Net controls and monitors
the instrument, evaluates the measured data and manages it in a data-
base.
Additional information on operating MagIC Net can be found in the docu-
ment "MagIC Net Tutorial" or in the software's online help.
1.2 Intended use
The 944 Professional UV/VIS Detector Vario is used as an independent
detector with various analysis instruments of the Metrohm line of instru-
ments.
This instrument is suitable for processing chemicals and flammable sam-
ples. Therefore, the use of the 944 Professional UV/VIS Detector Vario
requires the user to have basic knowledge and experience in handling
toxic and caustic substances. Knowledge regarding the application of fire
prevention measures prescribed for laboratories is also mandatory.
1.3 About the documentation
CAUTION
Read through this documentation carefully before putting the instru-
ment into operation. The documentation contains information and
warnings which the user must follow in order to ensure safe operation
of the instrument.
1.3 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 944 Professional UV/VIS Detector Vario (2.944.0010)
1.3.1 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the sec-
ond to the instrument part in the figure.
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key
WARNING
This symbol draws attention to a possible life-threat-
ening 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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