KROHNE ALTOSONIC III EN - Manual (Page 4)

ALTOSONIC III 4
Table of contents
1. Introduction .....................................................................................................................................................5
1.1 Cautions................................................................................................................................................................................................................ 5
1.2 Unpacking and inspection .................................................................................................................................................................................. 5
1.3 System description.............................................................................................................................................................................................. 5
1.4 Approvals.............................................................................................................................................................................................................. 5
2. Mechanical Installation ...................................................................................................................................6
2.1 Handling the flowmeter ....................................................................................................................................................................................... 6
2.2 Installation location and position....................................................................................................................................................................... 6
2.3 Accessibility and environmental precautions .................................................................................................................................................. 8
2.4 Special installation requirements....................................................................................................................................................................... 8
2.5 Pipe flanges.......................................................................................................................................................................................................... 9
2.6 Pipes with cathodic protection........................................................................................................................................................................... 9
3. Connecting the signal converter..................................................................................................................10
3.1 Safety instructions............................................................................................................................................................................................. 10
3.2 Installation in hazardous areas ........................................................................................................................................................................ 10
3.3 Converter terminal box...................................................................................................................................................................................... 10
3.4 Power supply connection ................................................................................................................................................................................. 10
3.5 Connection of sensor cables............................................................................................................................................................................ 11
3.6 Electrical connection of the signal inputs and outputs................................................................................................................................. 12
3.7 Connection diagram examples......................................................................................................................................................................... 12
3.8 Start-up ............................................................................................................................................................................................................... 14
3.9 Operating the signal converter......................................................................................................................................................................... 14
3.10 Menu structure and function of operating keys ............................................................................................................................................. 15
3.11 Description of functions.................................................................................................................................................................................... 20
4. Functional checks and service ....................................................................................................................26
4.1 Functional checks.............................................................................................................................................................................................. 26
4.2 Device information............................................................................................................................................................................................. 26
4.3 Measuring zero flow value ................................................................................................................................................................................ 26
5. Installation in hazardous areas, zone 1 and zone 2 ...................................................................................27
5.1 Approvals............................................................................................................................................................................................................ 27
5.2 Compact flowmeter............................................................................................................................................................................................ 27
5.3 Flow sensor ........................................................................................................................................................................................................ 27
5.4 Flow converter.................................................................................................................................................................................................... 28
5.5 Technical data .................................................................................................................................................................................................... 29
6. Electrical installation ....................................................................................................................................30
6.1 General................................................................................................................................................................................................................ 30
6.2 Connecting cables ............................................................................................................................................................................................. 30
6.3 Connection diagrams ........................................................................................................................................................................................ 30
7. Service and maintenance .............................................................................................................................33
7.1 Introduction ........................................................................................................................................................................................................ 33
7.2 Replacement of electronics unit or power fuse(s) ......................................................................................................................................... 33
7.3 Replacement of electronics unit....................................................................................................................................................................... 34
7.4 Replacement of mains fuse .............................................................................................................................................................................. 34
7.5 Returning the flowmeter to KROHNE for service or repair............................................................................................................................ 35