Vega VEGAPULS 61 Operating Instructions Manual

Contents

Vega VEGAPULS 61 Operating Instructions Manual Manual pdf 14 page image

144 MountingVEGAPULS 61 • Profibus PA28444-EN-1412151Fig. 6: Position of the polarisation plane with VEGAPULS 61 with plastic hornantenna1 Marking barsMake sure that all parts of the instrument coming in direct contactwith the process, especially the sensor element, process seal andprocess fitting, are suitable for the existing process conditions, suchas process pressure, process temperature as well as the chemicalproperties of the medium.You can find the specifications in chapter "Technical data" and on thenameplate.4.2 Mounting preparations, mounting strapThe optionally available mounting strap is used to fasten the radarsensor over open vessels or flumes. It is suitable for mounting onwalls, ceilings or brackets. The strap is supplied unassembled andmust be screwed to the sensor with the three hexagon socket screwsM5 x 10 and spring washers before setup. Max. torque see chapter"Technical data". Necessary tools: Allen wrench size 4.Screwing on is possible in two ways. Depending on the selected ver-sion, the sensors can be swivelled in the strap as follows:• Single chamber housing– 180° infinitely variable– in three steps 0°, 90° and 180°• Double chamber housing– 90° infinitely variable– in two steps 0° and 90°4.3 Mounting instructionsWhen mounting the sensor, keep a distance of at least 200 mm(7.874 in) to the vessel wall. If the sensor is installed in the center ofdished or round vessel tops, multiple echoes can arise. These can,however, be suppressed by an appropriate adjustment (see chapter"Setup").If you cannot maintain this distance, you should carry out a falsesignal storage during setup. This applies particularly if buildup on theSuitability for the processconditionsInstallation position