Elster EK220, Operating Instructions And Installation Information, Page: 6 / 120

Volume Conversion Device EK220
6 © Elster GmbH
I Safety information
F
The connections of the EK220 are freely accessible during setting up. Therefore, make
sure that no electrostatic discharge (ESD) can occur in order to avoid damage to the
components. The person carrying out the installation can, for example, discharge
himself/herself by touching the potential equalisation line.
F
To avoid erroneous operation and problems, the operating manual must be read be-
fore putting the EK220 into operation.
The EK220 Volume Conversion Device (= Electronic Volume Corrector) can be used in
Ex Zone 1 according VDE 0170 for gases of Temperature Class T4 (ignition temperature
> 135°C, e.g. natural gas). See Appendix A-2 for EC prototype test certificate.
In this application it is essential to take note of the following information:
F
Follow the relevant applicable national regulations and appropriate standards, e.g.
EN 60079-14 and EN 60079-11.
F
Make sure that the limits quoted in the EC prototype test certificate (see Appendix A-2)
for the devices to be connected are not exceeded.
F
The housing of the EK220 must be earthed directly to a potential equalisation strip. A
terminal screw is provided for this on the left housing wall.
F
Repairs on the EK220 may only by carried out by Elster GmbH.