Metrohm 663 VA Stand User manual

Manual
8.663.1003EN / 2019-12-03

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
Manual
8.663.1003EN / 2019-12-03

Technical Communication
Metrohm AG
CH-9100 Herisau
[email protected]
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
663 VA Stand ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 About the documentation ................................................... 1
1.2.1 Further information and literature ............................................ 1
1.2.2 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 Personnel safety ....................................................................... 4
1.3.4 Metallic liquid mercury ............................................................. 4
1.3.5 Tubing and capillary connections ............................................. 5
1.3.6 Recycling and disposal ............................................................. 5
2 Overview of the instrument 6
2.1 Front ...................................................................................... 6
2.2 Rear ........................................................................................ 7
2.3 Controls ................................................................................. 8
2.4 Top of measuring vessel ....................................................... 9
2.5 Structure of the MME pro .................................................. 10
3 Installation 12
3.1 Setting up the instrument .................................................. 12
3.1.1 Packaging .............................................................................. 12
3.1.2 Checks .................................................................................. 12
3.1.3 Location ................................................................................ 12
3.2 Inserting the stirrer ............................................................ 12
3.3 Inserting the Multi-Mode Electrode pro ........................... 13
3.4 Reference electrode (RE) .................................................... 16
3.5 Auxiliary electrode (AE) ...................................................... 17
3.6 Connecting the electrodes ................................................. 19
3.7 Connecting the inert gas inlet ........................................... 20
3.8 Connecting the instruments .............................................. 21
3.9 Connecting the instrument to the power grid ................. 22
4 Start-up 23

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 663 VA Stand
5 Technical specifications 24
5.1 Ambient conditions ............................................................ 24
5.2 Energy supply ...................................................................... 24
5.3 Dimensions .......................................................................... 24
5.4 Housing ............................................................................... 24
5.5 Specifications stirrer / rotating disk electrode ................. 25
6 Accessories 26
Index 27

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
663 VA Stand ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front ................................................................................................. 6
Figure 2 Rear .................................................................................................. 7
Figure 3 Controls ............................................................................................ 8
Figure 4 Top of measuring vessel .................................................................... 9
Figure 5 MME pro – Structure ....................................................................... 10
Figure 6 Installed stirrer ................................................................................. 13
Figure 7 Connecting the inert gas inlet .......................................................... 15
Figure 8 Preparing the reference electrode 1 ................................................. 16
Figure 9 Preparing the reference electrode 2 ................................................. 17
Figure 10 GC auxiliary electrode ...................................................................... 18
Figure 11 Reference electrode - Cable connector ............................................ 19
Figure 12 Gas washing bottle ......................................................................... 20
Figure 13 Cable connections ........................................................................... 21

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
663 VA Stand ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 663 VA Stand is a voltammetric measuring stand for Metrohm Auto-
lab potentiostats.
The 663 VA Stand can be used to perform polarographic and voltammet-
ric measurements on the following electrodes:
￭Multi-Mode Electrode pro (MME)
￭Rotating disk electrode
￭scTRACE Gold
The scope of delivery of the 663 VA Stand comprises all electrodes that
are required for a complete measurement system, that is the Multi-Mode
Electrode pro (MME), Ag/AgCl reference electrode and glassy carbon auxil-
iary electrode.
Alternative electrodes, cables and the power supply unit have to be
ordered separately.
An interface for Metrohm 663 VA Stand (IME663) is required to connect
the 663 VA Stand to the Metrohm Autolab potentiostats.
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 opera-
tion of the instrument.
1.2.1 Further information and literature
You can find further information regarding the 663 VA Stand in the fol-
lowing publications:
￭"Electrodes in Voltammetry" multimedia guide (A.717.0002)
￭Multi-Mode Electrode pro (8.110.8018XX)
￭Mercury Handling Guidelines (8.000.5054XX)

1.2 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 663 VA Stand
1.2.2 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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
663 VA Stand ￭￭￭￭￭￭￭￭ 3
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.
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.
Protection against electrostatic charges
WARNING
Electronic components are sensitive to electrostatic charges and can be
destroyed by discharges.
Do not fail to pull the power cord out of the power socket before you
set up or disconnect electrical plug connections at the rear of the
instrument.

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 663 VA Stand
1.3.3 Personnel safety
WARNING
Handling hazardous substances
Hazardous substances may result in injuries.
Wear protective glasses and work clothes suitable for laboratory work.
WARNING
Uncontrolled splashing of reagents
Splashing reagents may result in injuries.
Operate the 663 VA Stand only with the measuring head arm folded
down.
1.3.4 Metallic liquid mercury
WARNING
Mercury is a heavy liquid metal. Highly toxic mercury vapor forms even
at room temperature. Breathing in mercury vapor poses the risk of
chronic mercury poisoning. Therefore, observe the following points
when handling a MME pro containing mercury:
￭Do not inhale mercury vapor.
￭Only work with open containers of mercury while under a fume cup-
board.
￭Avoid skin contact with mercury.
￭Never store mercury in open containers.
￭Keep the laboratory area for work involving mercury well-ventilated.
￭Use amalgamation to bind any spilled mercury. Never use a broom
or vacuum.
￭Only have mercury disposed of by a professional. Never dispose of
mercury in household or domestic waste.
NOTICE
For detailed information, observe the Mercury Handling Guidelines
(8.000.5054XX).

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
663 VA Stand ￭￭￭￭￭￭￭￭ 5
1.3.5 Tubing and capillary connections
CAUTION
Leaks in tubing and capillary connections are a safety risk. Tighten all
connections well by hand. Avoid applying excessive force to tubing con-
nections. Damaged tubing ends lead to leakage. Appropriate tools can
be used to loosen connections.
Check the connections regularly for leakage. If the instrument is used
mainly in unattended operation, then weekly inspections are manda-
tory.
1.3.6 Recycling and disposal
This product is covered by European Directive 2012/19/EU, WEEE – Waste
Electrical and Electronic Equipment.
The correct disposal of your old instrument will help to prevent negative
effects on the environment and public health.
More details about the disposal of your old instrument can be obtained
from your local authorities, from waste disposal companies or from your
local dealer.
The MME pro (Multi-Mode Electrode pro) contains toxic mercury; never
dispose of it in domestic waste. For more information on the recycling and
disposing of mercury, observe the Mercury Handling Guidelines
(8.000.5054XX).

2.1 Front ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 663 VA Stand
2 Overview of the instrument
2.1 Front
Figure 1 Front
1Covering
Can be opened.
2FEP tubing
Inert gas inlet to the MME - Multi-Mode
Electrode pro.
3Top of measuring vessel 4Holder for measuring vessel
5Drip pan (6.2711.030) 6Gas washing bottle

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
663 VA Stand ￭￭￭￭￭￭￭￭ 7
7FEP tubing
Inert gas inlet to the MME - Multi-Mode
Electrode pro.
8Motor drive
For stirrer.
9Measuring head arm
Tiltable.
10 Tubing connections
2.2 Rear
Figure 2 Rear
1Connector
For inert gas outlet.
2Connector
For inert gas inlet.
3Type plate 4Connection socket
For stirrer control cable.
5Grounding socket 6Connection socket
For instrument control cable.
7Valve control 8Connectors
For a maximum of four burets. Sealed with
stoppers.

2.3 Controls ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 663 VA Stand
2.3 Controls
Figure 3 Controls
1Control dial
For setting the stirring rate.
2Control dial
For setting the drop size. For static mercury
drop electrode (SMDE) and hanging mercury
drop electrode (HMDE).
3Control dial
For selecting the electrode type.
4Switch
For knocking off the mercury drop of a
hanging mercury drop electrode (HMDE).
5Switch
To deaerate.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
663 VA Stand ￭￭￭￭￭￭￭￭ 9
2.4 Top of measuring vessel
Figure 4 Top of measuring vessel
1Pipetting opening
Seal with stopper (6.2709.030).
2Opening
For reference electrode (6.0728.020 with
6.1245.010).
3Opening
For stirrer (6.1204.200).
4Opening
For auxiliary electrode (6.1241.020 with
6.1247.000).
5Opening
For MME - Multi-Mode Electrode pro
(6.1246.120).

2.5 Structure of the MME pro ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 663 VA Stand
2.5 Structure of the MME pro
4
5
6
7
911
8
12
13
15
1
3
14
2
1
10
Figure 5 MME pro – Structure
1Needle holder (6.1247.140) 2Needle (6.1247.020)
3Thread
For the needle holder (5-1).
4Thread
For the retaining screw (5-6).
5Silicone seal (6.1247.150) 6Retaining screw (6.1247.120)
For the capillary.
7Screw cap (6.1247.110)
For the mercury filler opening.
8Connector
For inert gas inlet to control the needle
valve.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
663 VA Stand ￭￭￭￭￭￭￭￭ 11
9Thread
For the screw cap (5-7).
10 Contact pin
Electrical contact with mercury.
11 Mercury reservoir 12 Connector
For inert gas inlet.
13 Quick connector
For WE cable.
14 Adapter (6.2112.130)
For connecting the working electrode cable
to the quick connector (5-13).
The adapter is only needed to connect the
working electrode cable with terminal to the
MME pro.
15 Glass capillary
6.1226.030 or 6.1226.050

3.1 Setting up the instrument ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 663 VA Stand
3 Installation
3.1 Setting up the instrument
3.1.1 Packaging
The instrument is supplied in protective packaging together with the sepa-
rately packed accessories. Keep this packaging, as only this ensures safe
transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived com-
plete and without damage by comparing it with the delivery note.
3.1.3 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
Place the instrument in a location of the laboratory which is suitable for
operation and free of vibrations and which provides protection against
corrosive atmosphere and contamination by chemicals.
The instrument should be protected against excessive temperature fluctua-
tions and direct sunlight.
3.2 Inserting the stirrer
Installing the stirrer
Accessories
￭Stirrer (6.1204.200)
￭Drive belt (6.1241.020)