Vega VEGAPULS 65 Operating Instructions Manual

Also see for VEGAPULS 65: Quick setup guide Operating instructions Safety manual Quick setup guide Operating instructions

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Vega VEGAPULS 65 Operating Instructions Manual Manual pdf 13 page image

134 MountingVEGAPULS 65 • Modbus and Levelmaster protocol41365-EN-160224Prior to setup you have to replace these protective caps with ap-proved cable glands or close the openings with suitable blind plugs.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).Suitable retaining elements are also available from us.The retaining elements are attached with the versions for processtemperatures -196 … +200 °C (-321 … +392 °F).Size Article no. TypeM16, 5/8" 2.32880 Detent edged ringGross VS KDM20, 3/4" 2.32881 Detent edged ringGross VS KDM24, 7/8" 2.32882 Retaining washerSchnorr VS or STo seal effectively, the following requirements must be fulfilled:1. Make sure the number of flange screws corresponds to the num-ber of flange holes2. Use disc springs to compensate the preload loss of the PTFEwasher21Fig. 3: Use of disc springs1 Single disc spring2 Laminated disc spring3. Tighten screws with the necessary torque (see chapter "Technicaldata")Note:It is recommended, retightening the screws in regular intervalsdepending on process pressure and temperature. Recommendedtorque (see chapter "Technical data").The emitted radar impulses of the radar sensor are electromagneticwaves. The polarisation is the direction of the electrical wave compo-nent. By turning the instrument in the connection flange or mountingSealing to the processPolarisation