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Reference Manual
00809-0100-4811, Rev CA
February 2006
Rosemount 3300 Series
3-10
Free Space For easy access to the transmitter make sure that it is mounted with sufficient
service space. For maximum measurement performance the transmitter
should not be mounted too close to the tank wall or other objects in the tank.
If the probe is mounted close to a wall, nozzle or other tank obstruction noise
might appear in the level signal. Therefore the following minimum clearance,
according to the table below, must be maintained:
Figure 3-6. Free Space
Requirement
Table 3-5. Recommended minimum free space L to tank wall or other objects
in the tank.
Coaxial Rigid Twin Flexible Twin
0 in. (0 mm) 4 in. (100 mm) 4 in. (100 mm)
Table 3-6. Recommended minimum free space L to tank wall or other objects
in the tank for Single Lead probes.
Rigid Single/Flexible Single
4 in. (100 mm) Smooth metal wall.
12 in. (300 mm) Disturbing objects such as pipes and
beams, concrete or plastic tank walls,
rugged metal tank walls.
FREE SPACE