Emerson Process Management ROSEMOUNT 5300 - Manual (Page 26)

Reference Manual
00809-0100-4530, Rev BA
July 2009
Rosemount 5300 Series
2-12
Measuring Range The measuring range differs depending on probe type and characteristics of
the application. Table 2-4 can 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
The maximum measuring range differs based on application according to:
• Disturbing objects close to the probe
• Media with higher dielectric constant (

r
) 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
Interface 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).
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
14 ft 9 in. (4.5 m) - for 13 mm probes 164 ft (50 m) 19 ft 8 in. (6 m) 9 ft 10 in. (3 m) 164 ft (50 m)
Minimum Dielectric Constant at Maximum Measuring Range
1.4 (1.25 if installed in a metallic
bypass or stilling well)
(1)(2)
1.4, up to 49 ft (15 m) (1)
1.8, up to 82 ft (25 m) (1)
2.0, up to 115 ft (35 m) (1)
3, up to 138 ft (42 m)
4, up to 151 ft (46 m)
6, up to 164 ft (50 m)
1.2 (Standard)
1.4 (HP/C)
2.0 (HTHP) 1.4 1.4, up to 82 ft (25 m) (1)
2.0, up to 115 ft (35 m) (1)
2.5, up to 131 ft (40 m) (1)
3.5, up to 148 ft (45 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.
Level
Interface Level
Level = Interface Level
5302 5301