Emerson 3308A Rosemount 3308 Series, Reference Manual

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Reference Manual
00809-0100-4308, Rev BA
Appendix A: Reference Data
December 2014
Reference Data
Total probe length
This is defined from the Upper Reference Point to the end of the probe (weight included, if
applicable).
Figure A-9. Total Probe Length
Select the probe length according to the required measuring range (the probe must be hung
and fully extended through the entire distance where level readings are desired).
Cut-to-fit probes
All probes can be cut in field except for the PTFE covered probe. However, there are some
restrictions for the coaxial probe: Probes over 4.1 ft (1.25 m) can be cut up to 2 ft (0.6 m).
Shorter probes can be cut to the minimum length of 1.3 ft (0.4 m).
Minimum and maximum probe length

Flexible Single Lead: 3.3 ft (1 m) to 55.8 ft (17 m)

Rigid Single Lead (0.3 in./8 mm): 1.3 ft (0.4 m) to 9.8 ft (3 m)

Rigid Single Lead (0.5 in./13 mm): 1.3 ft (0.4 m) to 19.7 ft (6 m)

Flexible Twin Lead: 3.3 ft (1 m) to 55.8 ft (17 m)

Coaxial: 1.3 ft (0.4 m) to 19.7 ft (6 m)
Probe angle
0 to 90 degrees from vertical axis
Tensile strength

Flexible Single Lead: 2698 lb (12 kN)

Flexible Twin Lead: 2023 lb (9 kN)
Total Probe Length
Upper Reference Point
NPT BSP/G Flange Tri-Clamp