Emerson Process Management ROSEMOUNT 5300 - Manual (Page 41)

Reference Manual
00809-0100-4530, Rev BA
July 2009
3-11
Rosemount 5300 Series
Free Space For easy access to the transmitter, make sure it is mounted with sufficient
service space. For maximum measurement performance, the transmitter
should not be mounted close to the tank wall or near other objects in the tank.
If the probe is mounted close to a wall, nozzle or other tank obstruction, noise
may appear in the level signal. The minimum clearance shown in Table 3-5
and Table 3-6 is recommended:
Figure 3-7. Free Space
Requirement
Table 3-5. Recommended
minimum free space L to tank
wall or other objects in the tank
Table 3-6. Recommended
minimum free space L to tank
wall or other objects in the tank
for Single Lead probes
Coaxial Rigid Twin Flexible Twin
0 in. (0 mm) 4 in. (100 mm) 4 in. (100 mm)
Rigid Single/Flexible Single
4 in. (100 mm) Smooth metal wall.
20 in. (500 mm) (1)
(1) When measuring in low DC (around 1.4). For higher DC, the recommended
free space is lower.
Disturbing objects such as pipes and beams,
concrete or plastic tank walls, rugged metal tank
walls.