Vega VEGAPULS 61 Operating Instructions Manual

Also see for VEGAPULS 61: Operating instructions Quick setup guide Operating instructions Operating instructions Operating instructions

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Vega VEGAPULS 61 Operating Instructions Manual Manual pdf 15 page image

154 MountingVEGAPULS 61 • 4 … 20 mA/HART - two-wire36499-EN-1704054 Mounting4.1 General instructionsOn instruments with threaded process fitting, the hexagon must betightened with a suitable wrench. For the proper wrench size seechapter "Dimensions".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 ingress through the followingmeasures:• Use the recommended cable (see chapter "Connecting to powersupply")• Tighten the cable gland• When mounting horizontally, turn the housing so that the cablegland points downward• Loop the connection cable downward in front of the cable glandThis applies mainly to outdoor installations, in areas where highhumidity is expected (e.g. through cleaning processes) and on cooledor heated vessels.Make sure before mounting that all parts of the instrument exposed tothe process are suitable for the existing process conditions.These are mainly:• Active measuring component• Process fitting• Process sealProcess conditions in particular are:• Process pressure• Process temperature• Chemical properties of the medium• Abrasion and mechanical influencesYou can find detailed information on the process conditions in chapter"Technical data" as well as on the type label.Metric threadsIn the case of instrument housings with metric thread, the cableglands are screwed in at the factory. They are sealed with plasticplugs as transport protection.You have to remove these plugs before electrical connection.NPT threadIn the case of instrument housings with self-sealing NPT threads, it isnot possible to have the cable entries screwed in at the factory. Thefree openings for the cable glands are therefore covered with red dustprotection caps as transport protection. The dust protection caps donot provide sufficient protection against moisture.Screwing inProtection against mois-tureSuitability for the processconditionsCable glands