Product Data Sheet
00813-0100-4811, Rev DA
Catalog 2008 - 2009
Rosemount 3300 Series
Level-8
PROBES
Several versions of the probes are available:
Coaxial, Rigid Twin and Rigid Single Lead, Flexible
Twin and Flexible Single Lead. Probes can be
ordered in different materials and options for extreme
temperatures and pressure. For guidance in probe
selection, see table below and page 9.
The total probe length is defined from the upper
reference point to the end of the probe (weight
included if applicable).
Transition Zones
Transition zones are areas where measurements are
non-linear or will have reduced accuracy.
If measurements are desired at the very top of the
tank it is possible to mechanically extend the nozzle
and use the coaxial probe. Then the upper transition
zone is moved into the extension.
NOTE
The 4-20 mA set points are recommended to be
configured between the transition zones, within the
measuring range.
Upper Reference
Point
Total Probe
Length
NPT
BSP/G
Flange
Coaxial Rigid Twin Lead Flexible Twin Lead Rigid Single Lead Flex Single Lead
SST Probe XXXXX
Hastelloy Probe XX
Monel Probe XX
PTFE Covered Probe XX
HTHP Probe (SST) XXX
(1)
HP Probe (SST) XXX
(1)
(1) For measurements on liquids only.
For a flexible single lead probe with chuck, the lower
transition zone is measured upwards from the upper clamp.
Upper Reference Point
Upper Transition Zone
Maximum Measuring
Range
Lower Transition Zone
Dielectric Constant Coaxial Rigid Twin Lead Flexible Twin Lead Rigid Single Lead Flexible Single Lead
Upper
(1)
Transition
Zone
80 4 in. (10 cm) 4 in. (10 cm) 5.9 in. (15 cm) 4 in. (10 cm) 5.9 in. (15 cm)
2 4 in. (10 cm) 4 in. (10 cm) 8 in. (20 cm) 4 in. (10 cm) 20 in. (50 cm)
Lower
(2)
Transition
Zone
80 1.2 in. (3 cm) 2 in. (5 cm) 2 in. (5 cm
(3)
) 2 in. (5 cm) 2 in. (5 cm)
(3)(4)
2 2 in. (5 cm) 2.8 in. (7 cm) 5.9 in. (15 cm)
(3)(5)
4 in. (10 cm)
(5)
4.7 in. (12 cm)
(3)(5)
(1) The distance from the upper reference point where measurements have reduced accuracy, see picture above.
(2) The distance from the lower reference point where measurements have reduced accuracy, see picture above.
(3) Note that the weight length adds to non-measurable area and is not included in the diagram. See “Dimensional Drawings”.
(4) The measuring range for the PTFE covered Flexible Single Lead probe includes the weight when measuring on a high dielectric media.
(5) When using a stainless steel centering disc, the lower transition zone is 8 in. (20 cm), including weight if applicable. When using a PTFE centering disc, the
lower transition zone is not affected.
Lower Reference Point
(16 strony)
(3 strony)
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