41 For your safetyVEGABAR 82 • 4 … 20 mA/HART46306-EN-1904041.5 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.1.6 Permissible process conditionsFor safety reasons, the instrument must only be operated within thepermissible process conditions. You can find detailed information onthe process conditions in chapter "Technical data" as well as on thetype label.The permissible process pressure range is specified by "MWP"(Maximum Working Pressure) on the type label, see chapter "Struc-ture". The MWP takes the element of the measuring cell and process-ing fitting combination with the weakest pressure into considerationand may applied permanently. The specification refers to a referencetemperature of +20 °C (+68 °F). It also applies when a measuring cellwith a higher measuring range than the permissible pressure range ofthe process fitting is installed order-related.In order to prevent damage to the device, the test pressure may onlyexceed the specified MWP briefly by 1.5 times at reference tempera-ture. The pressure stage of the process fitting as well as the overloadresistance of the measuring cell are taken into consideration here(see chapter "Technical Data").In addition, a temperature derating of the process fitting, e. g. withflanges, can limit the permissible process pressure range accordingto the respective standard.1.7 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 43 – Signal level for fault information from measuring transduc-ers• NE 53 – Compatibility of field devices and display/adjustmentcomponents• NE 107 – Self-monitoring and diagnosis of field devicesFor further information see www.namur.de.1.8 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-