Emerson Process Management 5300 manual Measuring Range, Interface

Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Measuring Range

The measuring range differs depending on probe type and characteristics of the application. Table 2-4can be used as a guideline for clean liquids.

See Appendix A: Reference Data for the measuring range when using Remote Housing.

Table 2-4. Measuring Range

Rigid Single Lead	Flexible Single Lead(1)		Coaxial	Rigid Twin Lead	Flexible Twin Lead
	Maximum	Measuring Range
9 ft 10 in. (3 m) - for 8 mm probes	164 ft (50 m)	19 ft 8 in. (6 m)		9 ft 10 in. (3 m)	164 ft (50 m)
14 ft 9 in. (4.5 m) - for 13 mm probes
	Minimum Dielectric Constant at Maximum Measuring Range
1.4 (1.25 if installed in a metallic	1.4, up to 49 ft (15 m)(1)	1.2	(Standard)	1.4	1.4, up to 82 ft (25 m)(1)
bypass or stilling well)(1)(2)	1.8, up to 82 ft (25 m)(1)	1.4	(HP/C)		2.0, up to 115 ft (35 m)(1)
	2.0, up to 115 ft (35 m)(1)	2.0	(HTHP)		2.5, up to 131 ft (40 m)(1)
	3, up to 138 ft (42 m)				3.5, up to 148 ft (45 m)
	4, up to 151 ft (46 m)				6, up to 164 ft (50 m)
	6, up to 164 ft (50 m)

(1)The probe end projection software function will improve the minimum dielectric constant. Consult you local Emerson Process Management representative for details.

(2)Measuring range may be lower depending on installation.

Interface

The maximum measuring range differs based on application according to:

•Disturbing objects close to the probe

•Media with higher dielectric constant (εr) has better reflection and a longer measuring range

•Surface foam and particles in the tank atmosphere might affect measuring performance

•Heavy coating / contamination on the probe may reduce the measuring range and cause erroneous level readings

•Disturbing EMC environment in tank

•Tank material (e.g. concrete or plastic) for measurements with single lead probes

Rosemount 5302 is the ideal choice for measuring the level of oil, and the interface of oil and water, or other liquids with significant dielectric differences. Rosemount 5301 can also be used for interface measurement in applications where the probe is fully submerged in the liquid.

Figure 2-8. Interface measurement with a Rosemount 5302 and a Rosemount 5301 (fully submerged probe).

5302

Level

Interface Level

5301

Level = Interface Level

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