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Contents
1. APPLICATION ................................................................... 5
2. METER SET ...................................................................... 6
3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY ..................... 6
4. INSTALLATION .................................................................. 7
5. METER DESCRIPTION .......................................................... 8
6. ND20 PROGRAMMING ........................................................ 12
7. UPDATING OF SOFTWARE .................................................... 35
8. RS-485 INTERFACE ............................................................ 37
9. ERROR CODES ................................................................. 60
10. TECHNICAL DATA .............................................................. 62
11. VERSION CODES ............................................................... 66
12. MAINTENANCE AND GUARANTEE ........................................... 68