41 For your safetyVEGAFLEX 82 • 4 … 20 mA/HART - four-wire47593-EN-140324Electromagnetic 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.1.6 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 fulfills the requirements of the following NAMUR recom-mendations:• NE 21 – Electromagnetic compatibility of equipment• NE 43 – Signal level for malfunction information from measuringtransducers• NE 53 – Compatibility of field devices and display/adjustmentcomponents• NE 107 – Self-monitoring and diagnosis of field devicesFor further information see www.namur.de.1.7 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 fulfill this obligation by observing the environmentalinstructions in this manual:• Chapter "Packaging, transport and storage"• Chapter "Disposal"