MultiExact Gas Analyser Contents
7.6 Switching off the analyser ............................................................................. 77
8 ROUTINE MAINTENANCE .......................................................................... 78
8.1 Cleaning the analyser ................................................................................... 78
8.2 Inspecting/replacing the fuse (when necessary) .......................................... 78
8.3 Inspecting the optional filter element (O
2
purity / control only) ..................... 80
8.4 Inspecting the filter element (CO / CO
2
/ N
2
O / CH
4
trace only) ................... 81
8.5 CO
2
scrubber ................................................................................................ 82
8.5.1 For 0-10ppm CO
2
.................................................................................... 82
8.5.2 For 0-500ppm CO
2
.................................................................................. 82
8.6 Use of the analyser with toxic gases ............................................................ 82
8.7 Preventative maintenance ............................................................................ 83
9 FAULT FINDING ........................................................................................... 84
9.1 Fault, maintenance required and SIP statuses ............................................ 84
9.1.1 Status definitions ..................................................................................... 84
9.1.2 Status annunciations ............................................................................... 84
9.2 Viewing messages ........................................................................................ 90
9.2.1 Active messages ..................................................................................... 90
9.2.2 View history messages ............................................................................ 90
9.3 Diagnostics ................................................................................................... 91
9.4 General fault finding ...................................................................................... 92
10 STORAGE AND DISPOSAL......................................................................... 95
10.1 Storage ......................................................................................................... 95
10.2 Disposal ........................................................................................................ 95
11 SPARES ....................................................................................................... 96
A1 RS232 CONNECTION DETAILS ................................................................. 97
A1.1 Overview ....................................................................................................... 97
A1.2 Connecting the analyser to a PC .................................................................. 98
A1.3 Configuring the RS232 serial output parameters ......................................... 98
A1.4 Capturing data using Windows
®
and Hyper Terminalâ„¢ ............................... 99
A1.5 Configuration transfer ................................................................................. 100
A2 SERIAL OUTPUT FORMATS..................................................................... 103
A3 IMPLEMENTATION GUIDE FOR MODBUS COMMUNICATIONS (OPTION)104
A3.1 Introduction ................................................................................................. 104
A3.2 References ................................................................................................. 104
A3.3 Modbus Setup ............................................................................................. 104
A3.4 Supported function codes ........................................................................... 105
A3.5 Exception codes ......................................................................................... 105
A3.6 Addressing .................................................................................................. 105
A3.7 Floating point numbers ............................................................................... 106
A3.8 System data mapping ................................................................................. 106
A3.9 Transducer data mapping ........................................................................... 106
A3.10 System Fault Mapping ................................................................................ 108
A3.11 Transducer fault and alarm mapping .......................................................... 109
A3.12 System set-up mapping .............................................................................. 112
A3.13 Transducer set-up mapping ........................................................................ 112
05410001A / Revision 6 iii