Emerson Process Management 5300 manual Free Space

Reference Manual

00809-0100-4530, Rev BA July 2009

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 3-5and Table 3-6is 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)		Disturbing objects such as pipes and beams,
		concrete or plastic tank walls, rugged metal tank
		walls.

(1)When measuring in low DC (around 1.4). For higher DC, the recommended free space is lower.

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