Vega VEGAPULS 63 Operating Instructions Manual

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

Vega VEGAPULS 63 Operating Instructions Manual Manual pdf 12 page image

124 MountingVEGAPULS 63 • HART and accumulator pack40794-EN-1409224 Mounting4.1 General instructionsOn instruments with process fitting thread, the hexagon must be tight-ened with a suitable wrench. For the proper wrench size see chapter"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 particularly to:• Outdoor mounting• Installations in areas where high humidity is expected (e.g. throughcleaning processes)• Installations on cooled or heated vesselsMake 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 detailed information on the process conditions in chapter"Technical data" as well as on the type label.4.2 Mounting instructionsThe PTFE washer of the antenna encapsulation serves also asprocess seal.To compensate the normal prestress loss due to the seal materials,you have to use also disc springs in addition to the flange screws forfastening PTFE plated flanges.We recommend flexible retaining washers (e.g. Schnorr VS or S) ordetent edged rings (e.g. Gross VS KD).Screwing inProtection against mois-tureSuitability for the processconditionsSealing to the process