KROHNE BM 702 A EN - Manual (Page 54)

8
TECHNICAL DATA
54
BM 702 A
www.krohne.com 09/2009 - 4000643301 - MA BM 702 A R01 en
8.4 Antenna selection
The graph below shows which antenna to select for the application.
Graph of tank height / measuring range against dielectric constant ε
r
Figure 8-2: Selection of antenna
a = tank height / measuring range [ft / m]
b = ε
r
for storage tanks with smooth product surface
c = ε
r
for process tanks or foam
d = ε r for agitator tanks with vortex
1 Stilling well* (not for agitator tanks)
2 Stilling well* (not for agitator tanks) or antenna type 4
3 Stilling well* (not for agitator tanks); Wave-Stick or antenna type 3 and type 4
4 Stilling well* (not for agitator tanks); antenna type 2, type 3 and type 4 or Wave-Stick
5 Stilling well* (not for agitator tanks) or Wave-Stick
* Stilling well is equal to Wave-Guide antenna and bypass chamber
.book Page 54 Thursday, September 3, 2009 2:53 PM