Product Data Sheet
00813-0100-4530, Rev AA
Catalog 2008 - 2009
Level-11
Rosemount 5300 Series
Measuring Range
In the table below, measuring range information is given for each probe. Since the measuring range depends on
the application and on the different factors described in this chapter, the values are given as a guideline for clean
liquids. For more information, consult factory.
Different parameters affect the echo and therefore
the maximum measuring range differs depending on
application according to:
• Disturbing objects close to the probe.
• Media with higher dielectric constant gives
better reflection and allows a longer
measuring range.
• Surface foam and particles in the tank
atmosphere are circumstances that might
affect measuring performance.
• Heavy coating / contamination on the probe
can reduce the measuring range and might
cause erroneous level readings. Consider to
use a single lead probe or a non-contact radar
transmitter.
• Tank material (e.g. concrete or plastic) for
measurements with single lead probes
(see “Mechanical Considerations” on page
Level-16).
Coating
• Single lead probes are preferred when there is
a risk for contamination (because coating can
result in product bridging across the two leads
for twin versions; between the inner lead and
outer pipe for the coaxial probe).
• For viscous or sticky applications, the PTFE
probes are recommended. Periodic cleaning
might be required.
• Maximum error due to coating is 1-10%
depending on probe type, dielectric constant,
coating thickness and coating height above
product surface.
Coaxial Rigid Twin Lead Flexible Twin Lead Rigid Single Lead Flexible Single Lead
(1)
Maximum Measuring Range
19 ft 8 in. (6 m) 9 ft 10 in. (3 m) 164 ft (50 m) 9 ft 10 in. (3 m) 164 ft (50 m)
Minimum Dielectric Constant
1.2 (Std)
1.4 (HP)
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)
1.4
(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) Probe end projection software function will improve the minimum measurable dielectric constant. Consult factory for details.
(2) May be lower depending on installation.
Coaxial Twin Lead Single Lead
Maximum Viscosity
500 cP 1500 cP 8000 cP
(1)
(1) Consult factory if agitation / turbulence and high viscosity.
Coating / Build-up
Coating not
recommended
Thin coating
allowed, but no
bridging
Coating allowed
(38 paginas)
(3 paginas)
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