456 Set up with the display and adjustment moduleVEGAPULS 69 • 4 … 20 mA/HART - two-wire47247-EN-170818Silo (slender and high):• Vessel of metal: weld joints• Process/measurement conditions:– Filling aperture too close to the sensor– System noise in completely empty silo increased• Properties, sensor:– Stable measured values through higher averaging– False signal suppression during setup recommended, requiredfor automatic false signal suppression– Automatic false signal suppression with partly filled vessel2)Bunker (large-volume):• Vessel of concrete or metal:– Structured vessel walls– Installations present• Process/measurement conditions:– Large distance to the medium– Large angles of repose• Properties, sensor:– Mean averaging– High measured value jumps are acceptedBunker with fast filling:• Vessel of concrete or metal, also multiple chamber silo:– Structured vessel walls– Installations present• Process/measurement conditions:– Measured value jumps, e.g. through truck loading– Large distance to the medium– Large angles of repose• Properties, sensor:– Lower averaging– Very high measured value jumps are acceptedHeap:• Sensor mounting on movable conveyor belts• Detection of the heap profile• Height detection during filling• Process/measurement conditions:– Measured value jumps, e.g. by the profile of the heap or trav-erses– Large angles of repose– Measurement near the filling stream• Properties, sensor:– Mean averaging– High measured value jumps are acceptedCrusher:• Vessel: installations, wear and protective facilities available2) The instrument recognizes if a manual false signal suppression was carriedout with empty vessel and high system noise. An automatic false signal sup-pression is then carried out if a product echo was detected at the beginningof the filling process.