Metrohm 917 Coulometer Manuale utente
917 Coulometer
Manual – Short Instructions
8.917.8002EN / 2015-10-28
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
www.metrohm.com
917 Coulometer
Manual – Short Instructions
8.917.8002EN / 2015-10-28 olei
Technische Dokumentation
Metrohm AG
CH-9100 Herisau
This documentation is protected by copyright. All rights reserved.
This document 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
917 Coulometer ￭￭￭￭￭￭￭￭ III
Table of contents
1 About these short instructions 1
2 Introduction 2
2.1 Instrument description ......................................................... 2
2.1.1 Titration and measuring modes ................................................ 2
2.1.2 Connectors .............................................................................. 3
2.1.3 Intended use ........................................................................... 3
2.2 About the documentation ................................................... 3
2.2.1 Symbols and conventions ........................................................ 4
3 Safety instructions 5
3.1 General notes on safety ....................................................... 5
3.2 Electrical safety ..................................................................... 5
3.3 Tubing and capillary connections ....................................... 6
3.4 Flammable solvents and chemicals ..................................... 6
3.5 Recycling and disposal ......................................................... 7
4 Overview of the instrument 8
4.1 Front ...................................................................................... 8
4.2 Rear ........................................................................................ 9
5 Installation 10
5.1 Setting up the instrument .................................................. 10
5.1.1 Packaging .............................................................................. 10
5.1.2 Checks .................................................................................. 10
5.1.3 Location ................................................................................ 10
5.2 Setting up the titration cell for coulometry ..................... 11
5.2.1 Inserting the titration cell ....................................................... 11
5.2.2 Preparing the titration cell ...................................................... 11
5.2.3 Mounting the addition and aspiration tube ............................ 15
5.3 Connecting the coulometer to the power supply ............ 16
5.4 Connecting sensors ............................................................ 17
5.4.1 Connecting generator electrodes ........................................... 17
5.4.2 Connecting indicator electrodes ............................................. 19
5.4.3 Connecting a temperature sensor .......................................... 20
6 Technical specifications 22
6.1 Touch screen ....................................................................... 22
Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 917 Coulometer
6.2 Measuring inputs ................................................................ 23
6.2.1 Generator electrode .............................................................. 23
6.2.2 Indicator electrode ................................................................ 23
6.2.3 Temperature sensor ............................................................... 23
6.2.4 Determination range ............................................................. 24
6.2.5 Resolution ............................................................................. 24
6.2.6 Reproducibility ....................................................................... 24
6.3 Internal stirrer ..................................................................... 24
6.4 Interfaces and connectors ................................................. 24
6.5 Power supply ...................................................................... 25
6.6 Safety specifications ........................................................... 25
6.7 Electromagnetic compatibility (EMC) ................................ 25
6.8 Ambient temperature ......................................................... 26
6.9 Reference conditions .......................................................... 26
6.10 Dimensions .......................................................................... 26
Index 27
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
917 Coulometer ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Inserting the titration cell ................................................................. 11
Figure 2 Filling the adsorber tube .................................................................. 12
Figure 3 Equipping the titration cell ............................................................... 13
Figure 4 Mounting the addition and aspiration tube ...................................... 15
Figure 5 Connecting the power supply unit ................................................... 16
Figure 6 Unscrewing the protective cap from the generator electrode ........... 17
Figure 7 Screwing the electrode cable to the generator electrode ................. 18
Figure 8 Connecting a generator electrode ................................................... 18
Figure 9 Unscrewing the protective cap from the indicator electrode ............ 19
Figure 10 Screwing the electrode cable to the indicator electrode ................... 19
Figure 11 Connecting an indicator electrode ................................................... 20
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 About these short instructions
917 Coulometer ￭￭￭￭￭￭￭￭ 1
1 About these short instructions
This short instruction manual contains important information concerning
the 917 Coulometer. In addition to an introduction, safety instructions
and an overview of the instrument, you will also find information about
the installation of the coulometer.
Additional information concerning the instrument can be found at
http://products.metrohm.com.
2.1 Instrument description ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 917 Coulometer
2 Introduction
2.1 Instrument description
The 917 Coulometer is a compact titration system for coulometric Karl
Fischer titration. This newly designed titrator combines in a single device
the touch-sensitive color monitor for convenient and efficient operation,
the magnetic stirrer and the membrane pump for adding and aspirating
solvents. The upper side of the housing offers space for the titration cell.
Thanks to its compact construction, you can use the 917 Coulometer in a
small space as a stand-alone titrator.
You manage reagents, sensors, methods, etc. conveniently in the internal
memory of the 917 Coulometer. You can also save your files externally
through the USB connector, e.g. on a USB flash drive. On this storage
medium you can not only store your methods and determinations, but
also create a backup together with all of the data and settings of your sys-
tem.
The integrated Ethernet connector is available to you should you wish to
connect your 917 Coulometer to a network. The network connection
offers you the following advantages:
￭Saving data to a PC within the network
￭Printing reports on a network printer
￭Sending displayed messages as e-mails
2.1.1 Titration and measuring modes
The 917 Coulometer supports the following titration and measuring
modes.
￭KFC
Coulometric water content determination according to Karl Fischer
with voltametric measurement.
￭BRC
Coulometric bromine index determination. Determining the amount of
double bonds in e.g. mineral oils.
￭MEAS
Measuring modes:
–Ipol (voltametric measurement with selectable polarization cur-
rent)
–Upol (amperometric measurement with selectable polarization
voltage)
–T (temperature measurement)
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