Elster EK280 - Page 4

4 General
3.7.2 LF pulse or signal outputs .................................................................. 25
3.7.3 HF pulse outputs ................................................................................ 25
3.8 Interfaces ......................................................................................... 26
3.8.1 Serial optical interface ........................................................................ 26
3.8.2 Serial electrical interface .................................................................... 26
3.8.3 Integrated modem .............................................................................. 26
3.9 Measurement conditions .................................................................. 27
3.9.1 Environment ....................................................................................... 27
3.10 Labeling ......................................................................................... 27
3.10.1 Type label of the volume corrector ................................................... 27
3.10.2 ATEX marking .................................................................................. 28
3.10.3 Device software identification ........................................................... 29
4 Construction and Function ................................................................... 30
4.1 External view.................................................................................... 30
4.2 Internal view ..................................................................................... 30
4.3 Short description .............................................................................. 31
4.4 Connections ..................................................................................... 31
5 Assembly, Connection and Putting into Operation ........................... 32
5.1 Assembly ......................................................................................... 32
5.1.1 Assembly on a gas meter ................................................................... 33
5.1.2 Assembly on a pipeline ...................................................................... 33
5.1.3 Assembly on a wall ............................................................................. 34
5.1.4 Three-way valve ................................................................................. 34
5.2 Connection ....................................................................................... 35
5.2.1 Connecting the gas meter .................................................................. 36
5.2.2 Sealing the input terminals ................................................................. 38
5.2.3 Connecting the temperature sensor ................................................... 38
5.2.4 Connecting the pressure pipe............................................................. 40
5.2.5 Connecting the power supply ............................................................. 41
5.2.6 Connect outputs of the EK280 ............................................................ 43
5.2.7 Earthing the EK280 housing ............................................................... 44
5.2.8 Earthing the cable connections of the EK280 ..................................... 45
5.2.9 Additional measures for installation in zone 2 .................................... 45
5.3 Putting into operation ....................................................................... 46
5.3.1 Configuration of measurement parameters ........................................ 46
5.3.2 Sealing ............................................................................................... 55
5.3.3 Closing the housing ............................................................................ 57
5.3.4 Verifying assembly and connection .................................................... 57
6 Operation ................................................................................................ 58
6.1 Safety ............................................................................................... 58
6.1.1 Personal protective equipment ........................................................... 58
6.2 Operating personnel ........................................................................ 58
6.2.1 Instructed personnel ........................................................................... 58
6.2.2 Qualified personnel ............................................................................ 58
6.2.3 Calibration officers .............................................................................. 59