62 For your safetyVEGAFLEX 81 • Modbus and Levelmaster protocol41828-EN-1901312.5 EU conformityThe device fulfils the legal requirements of the applicable EU direc-tives. By affixing the CE marking, we confirm the conformity of theinstrument with these directives.You can find the EU conformity declaration on our website underwww.vega.com/downloads.Electromagnetic compatibilityInstruments in four-wire or Ex-d-ia version are designed for use in anindustrial environment. Nevertheless, electromagnetic interferencefrom electrical conductors and radiated emissions must be taken intoaccount, as is usual with class A instruments according to EN 61326-1. If the instrument is used in a different environment, the electromag-netic compatibility to other instruments must be ensured by suitablemeasures.2.6 NAMUR recommendationsNAMUR is the automation technology user association in the processindustry in Germany. The published NAMUR recommendations areaccepted as the standard in field instrumentation.The device fulfils the requirements of the following NAMUR recom-mendations:• NE 21 – Electromagnetic compatibility of equipment• NE 53 – Compatibility of field devices and display/adjustmentcomponents• NE 107 - Self-monitoring and diagnosis of field devicesFor further information see www.namur.de.2.7 Installation and operation in the USA andCanadaThis information is only valid for USA and Canada. Hence the follow-ing text is only available in the English language.Installations in the US shall comply with the relevant requirements ofthe National Electrical Code (ANSI/NFPA 70).Installations in Canada shall comply with the relevant requirements ofthe Canadian Electrical Code.2.8 Environmental instructionsProtection of the environment is one of our most important duties.That is why we have introduced an environment management systemwith the goal of continuously improving company environmental pro-tection. The environment management system is certified accordingto DIN EN ISO 14001.Please help us fulfil this obligation by observing the environmentalinstructions in this manual:• Chapter "Packaging, transport and storage"• Chapter "Disposal"