Vega VEGAFLEX 86 Operating Instructions Manual

Also see for VEGAFLEX 81: Mounting instructions Operating instructions Quick setup guide Operating instructions Operating instructions

Contents

Vega VEGAFLEX 86 Operating Instructions Manual Manual pdf 13 page image

134 MountingVEGAFLEX 86 • 4 … 20 mA/HART two-wire44231-EN-1404304 Mounting4.1 General instructionsOn instruments with process fitting thread, the hexagon must be tight-ened with a suitable screwdriver. Wrench size see chapter "Dimen-sions".Warning:The housing must not be used to screw the instrument in! Applyingtightening force can damage internal parts of the housing.Protect your instrument against moisture penetration through the fol-lowing measures:• Use the recommended cable (see chapter "Connecting to powersupply")• Tighten the cable gland• Turn the housing in such a way that the cable gland points down-ward• Loop the connection cable downward in front of the cable glandThis applies particularly to:• Outdoor mounting• Installations in areas where high humidity is expected (e.g. throughcleaning processes)• Installations on cooled or heated vesselsIn the case of instrument housings with self-sealing NPT threads, it isnot possible to have the cable entries screwed in at the factory. Theopenings for the cable glands are therefore covered with red protec-tive caps as transport protection.Prior to setup you have to replace these protective caps with ap-proved cable glands or close the openings with suitable blind plugs.The suitable cable glands and blind plugs come with the instrument.Make sure that all parts of the instrument exposed to the process aresuitable for the existing process conditions.These are mainly:• Active measuring component• Process fitting• Process sealProcess conditions are particularly:• Process pressure• Process temperature• Chemical properties of the medium• Abrasion and mechanical influencesYou can find the specifications of the process conditions in chapter"Technical data" as well as on the type label.Screwing inProtection against mois-tureProtective capsSuitability for the processconditions