Emerson Process Management ROSEMOUNT 5300 - Manual (Page 265)

Reference Manual
00809-0100-4530, Rev BA
July 2009
C-17
Rosemount 5300 Series
NOTE!
Single Rigid HTHP equipped with reference reflector is the only probe that
supports vapor compensation. The probe is marked “VC” as shown in
Figure C-14.
Figure C-14. Single Rigid HTHP
with VC marking on the probe.
• Probes up to 13.1 ft (4 m) length are supported
• Pipe / Chamber is the only supported mounting type. Supported pipe
inner diameters are 2, 3, and 4 in. (5, 7.5, and 10 cm)
• Probe End Projection is disabled when vapor compensation is enabled
• Trim near zone shall not be used when dynamic vapor compensation is
used.
Dynamic Vapor Compensation requires a minimum distance from the flange
to the surface level to measure the change in the vapor dielectric constant. If
the level rises within this area, the unit switches over to static compensation,
using the last known vapor dielectric constant. This minimum distance is
17.3 in. (440 mm) for probe length < 6.6 ft (2 m), and 28 in. (710 mm) for
probe length > 6.6 ft (2 m) (see X in figure below), to dynamically compensate
up to level 100%. The minimum measuring range for this functionality is 12 in.
(300 mm).
V C
V C
VC marking on tank seal