User's Manual

27
4 Mounting
VEGAPULS 69 • 4 … 20 mA/HART - two-wire
47247-EN-170315
Small,inclinedsheetmetalbaesabovetheinstallationsscatterthe
radarsignalsandpreventdirectinterferingreections.
Fig.17:Coverat,large-areaproleswithdeectors
Large material heaps are best measured with several instruments,
which can be mounted on e.g. traverse cranes. For this type of ap-
plication it is advantageous to orient the sensor perpendicular to the
bulk solid surface.
Thesensorsdonotinuenceeachother.
Information:
Keep in mind that for these applications, the sensors are designed
for relatively slow level changes. If the sensor is used on a movable
boom, the max. measuring rate must be observed (see chapter
"Technicaldata").
Fig. 18: Radar sensors on traverse crane
Instruments for a temperature range up to 200° C have a spacer
betweenprocessttingandelectronicshousing.Thisspacerisused
to thermally decouple the electronics from the high process tempera-
tures.
Information:
The spacer may only be incorporated up to a maximum of 50 mm into
the vessel insulation. Only then is a reliable temperature decoupling
guaranteed.
Material heaps
Mounting in the vessel
insulation