Table Of Contents - RMG EC 900 Operating Instructions Manual

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INTRODUCTION ................................................................................... 1
Description and variants ....................................................................................... 1
New symbols as per EN 12405 ............................................................................ 3
CONSTRUCTION AND FUNCTION ...................................................... 4
Gas volume corrector ........................................................................................... 4
Casing and control panel ............................................................................................... 4
Electronic components .................................................................................................. 5
Ex zone 1 ................................................................................................................................................... 5
Calculation of the volume at base conditions ................................................................ 9
Totalizers ....................................................................................................................... 9
Overview .................................................................................................................................................... 9
Disturbance totalizers .............................................................................................................................. 10
Time system ................................................................................................................ 10
General .................................................................................................................................................... 10
Rules for changing time ........................................................................................................................... 10
PTB telephone time service ..................................................................................................................... 10
Operating parameters for controlling time and date ................................................................................ 10
Data protection ........................................................................................................... 11
Data logger .......................................................................................................... 12
Maximum values (maximum load) ............................................................................... 12
Archives and logbooks ................................................................................................ 13
Archive structure ..................................................................................................................................... 13
Periodic archive ....................................................................................................................................... 13
Disturbance archive ................................................................................................................................. 14
Daily archive ............................................................................................................................................ 14
Monthly archive ....................................................................................................................................... 15
Legal metrological logbook as per PTB-A 50.7 ........................................................................................ 15
Parameter change logbook ...................................................................................................................... 16
Event logbook .......................................................................................................................................... 16
Event archive ........................................................................................................................................... 17
Load archive ............................................................................................................................................ 17
Communication ................................................................................................... 18
Interfaces .................................................................................................................... 18
Optical interface as per IEC 62056-21 on the front panel ....................................................................... 18
Electrical interface ................................................................................................................................... 18
Modems ...................................................................................................................... 18
Transmission protocols ............................................................................................... 19
M900 protocol ......................................................................................................................................... 19
DSfG-B protocol ....................................................................................................................................... 19
Modbus protocol ...................................................................................................................................... 19
Communication unit (CU) ............................................................................................ 19
SAFETY INSTRUCTIONS ..................................................................... 20
Instructions for the installer ............................................................................... 21
Marking ....................................................................................................................... 21
Use .............................................................................................................................. 21
Installation and commissioning in areas subject to explosion hazards ........................ 21
Commissioning ............................................................................................................ 22
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CONTENTS