Emerson Guided Wave Radar Level and Interface Transmitters 3300 - Manual (Page 33)

Reference Manual
00809-0100-4811, Rev CA
February 2006
3-9
Rosemount 3300 Series
Mounting in Still
pipes/by-pass pipes In order to prevent the probe from contacting the bridle wall when replacing
displacers or installing in pipes, centering discs are available for the Rigid
Single, Flexible Single and Flexible Twin Lead probes. The disc is attached to
the end of the probe and thus keeps the probe centered in the bridle. The
discs are available in stainless steel and teflon (PTFE). See also “Mounting a
Centering Disc for Pipe Installations“ on page 3-20.
Figure 3-5. Mounting in
Still Pipes.
Note! It is not recommended that flexible
probes are installed in by-pass pipes.
Rigid Single Lead.
Pipe diameter Ø
≥2 inch (50 mm).
Inlet pipe diameter N<Ø.
L
≥12 inch (300 mm).
Flexible Single Lead.
Pipe diameter Ø
≥4 inch (100 mm).
Note! For smaller pipes please consult
factory.
Make sure that the probe is at the center of
the Still pipe by, for example, using a
centering disc.
Note! It is not recommended that flexible
probes are installed in by-pass pipes.
Rigid Twin Lead.
Pipe diameter Ø
≥2 inch (50 mm).
Inlet pipe diameter N<Ø.
L
≥12 inch (300 mm).
The center rod must be placed more than
0.6 inch/15 mm away from the pipe wall.
Flexible Twin Lead.
Pipe diameter Ø
≥4 inch (100 mm).
Note! For smaller pipes please consult
factory.
The center rod must be placed more than
0.6 inch/15 mm away from the pipe wall. The
probe may under no circumstances get into
contact with the pipe wall. It is recommended
that a centering disc is used.
Coaxial Lead.
Pipe diameter Ø
≥1.5 inch (38 mm).
S
T
IL
LPI
PE_
MO
UN
T_
SIN
G
L
E
.E
P
S
Ø
L
N
Rigid Single
Ø
Flexible Single
Ø S
T
IL
LPI
PE_
M
O
UN
T_
T
W
IN.EP
S
Flexible Twin
Ø
Rigid Twin
N
L
S
T
IL
L
P
IPE
MOUNT CL
Ш