KROHNE BM 70 A Installation And Operating Instructions Manual page 21

B) Wave-Stick
Note the requirements pertaining to diameter and length of the tank fitting:
Tank nozzle
6.1.4 Mounting on stilling wells
Antenna size must match inside
diameter
Further requirements concerning stilling wells:
• The well must be electrically conductive.
• Minimum inside diameter of well: 40 mm (1.57"). (BM 70 P: 80 mm,
better > 100 mm).
• If possible, use only smooth walled, straight stilling wells. If nevertheless an assembled stilling well
is necessary, abrupt changes in diameter along the pipe should be less than 1 mm (0.04"). Surface
roughness of the inside of the pipe should not be more than + 0.1 mm (0.004").
• For the BM 70 P the antenna types 1s, 2s, 3s or 4s have to be used to achieve a high measuring
accuracy.
Installation and operating instructions BM 70 A/P
max. X
L
min. 50 mm/2"
A standard Wave-Stick will not
function in a stilling well! For
stilling wells 40-55 mm a type
Wave-Stick SW can be used.
Version Length L
Standard 384 mm
(15.12")
Option 500...1000 mm
(19.7" - 39.4")
Antenna Type
1
1s
2, 2s
3
3s
4, 4s
If necessary, turn antenna
to size!
Page: 21
max.
height of
fitting X
150 mm
(15.12")
L - 234 mm
(L - 9.2")
Outside
diameter
80 mm (3.15")
76 mm (2.99")
100 mm (3.94")
140 mm (5.51")
152 mm (5.98")
200 mm (7.87")
60mm
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