Metrohm 757 VA Computrace - Manual (Page 3)

Table of contents
757 VA Computrace – Hardware
I
Table of contents
1 Introduction
.........................................................................................
1
1.1 Instrument description......................................................................1
1.2 Information about the Instructions for Use....................................2
1.2.1 Organization ...........................................................................2
1.2.2 Notation and pictograms........................................................3
1.3 Support documentation ....................................................................4
1.3.1 Application Bulletins ...............................................................4
1.3.2 Application Notes ...................................................................6
1.3.3 Monographs ...........................................................................6
1.3.4 Reprints...................................................................................6
2 Parts and controls
.........................................................................
7
3 Installation
.........................................................................................
13
3.1 Setting up the instrument ...............................................................13
3.1.1 Packaging............................................................................. 13
3.1.2 Check.................................................................................... 13
3.1.3 Location ................................................................................ 13
3.2 Installation of the 757 VA Computrace Stand..............................14
3.2.1 Mains cable and mains connection...................................... 14
3.2.2 Switching the instrument on/off ............................................ 14
3.2.3 Connection to the PC ........................................................... 15
3.2.4 Equipping the measuring head ............................................ 16
3.2.5 Inert gas connection ............................................................. 19
3.3 Multi-mode electrode (MME)...........................................................21
3.3.1 Construction and operating characteristics of the MME ...... 21
3.3.2 Filling the MME with mercury................................................ 23
3.3.3 Mounting the capillary .......................................................... 24
3.3.4 Filling the capillary without vacuum...................................... 24
3.3.5 Filling the capillary using vacuum......................................... 26
3.3.6 Storing the MME ................................................................... 30
3.3.7 Replenishing the mercury (without changing capillary)........ 30
3.3.8 Changing the capillary.......................................................... 31
3.3.9 Cleaning the MME ................................................................ 32
3.4 Rotating disk electrode (RDE)........................................................34
3.4.1 Construction and startup of the RDE.................................... 34
3.4.2 Regenerating the RDE .......................................................... 34
3.5 Reference electrode.........................................................................36
3.5.1 Construction ......................................................................... 36
3.5.2 Startup procedure................................................................. 37
3.6 Auxiliary electrode...........................................................................38
3.6.1 Construction ......................................................................... 38
3.6.2 Startup procedure................................................................. 38
3.7 Stirrer .................................................................................................39
3.8 Connection of 765 Dosimats ..........................................................40
3.8.1 Electrical connection and setup ........................................... 40
3.8.2 Tubing connection ................................................................ 40
3.8.3 Changing the Exchange unit ................................................ 41