Product data

53
www.rosemount.com
Rosemount 5300 Series
October 2014
Table 12. Minimum Clearance
Table 13. Probe Length Determination for Rosemount 9901 Chambers
Table 14. Required Probe Length in Existing Displacer Chambers
Rigid single lead/
segmented rigid single lead
Flexible single lead Coaxial Rigid twin lead Flexible twin lead
Min. clearance to
tank wall (L) or
obstruction
(1)
(1) Minimum clearance from tank bottom for the coaxial and rigid single probes is 0.2 in. (5 mm).
4 in. (10 cm) if smooth
metallic wall.
20 in. (50 cm) if disturbing
objects, rugged metallic or
concrete/plastic wall.
4 in. (10 cm) if
smooth metallic wall.
20 in. (50 cm) if
disturbing objects,
rugged metallic or
concrete/plastic wall.
0 in. (0 cm) 4 in. (10 cm) 4 in. (10 cm)
Min. chamber/
still pipe diameter
2 in. (5 cm)
(2)
(2) The probe must be centered in the pipe/bypass. A centering disc (see “Centering Discs” on page 52 and page 13) can be used to prevent the probe from
contacting the chamber wall.
Consult the factory 1.5 in. (3.8 cm) 2 in. (5 cm)
(3)
(3) The centermost lead must be at least 0.6 in. (15 mm) away from the pipe/bypass wall.
Consult the factory
Probe length
Chamber Side-and-side chamber Side-and-bottom chamber
9901 Standard B + 19 in. (480 mm) B + 4 in. (100 mm)
9901 with option G1
(1)
(1) For use with Dynamic Vapor Compensation probe and short reference reflector (GWR option code R1).
B + 25 in. (650 mm) B + 10 in. (260 mm)
9901 with option G2
(2)
(2) For use with Dynamic Vapor Compensation probe and long reference reflector (GWR option code R2).
B + 36 in. (920 mm) B + 21 in. (530 mm)
Chamber manufacturer Probe length
(1)
(1) If flushing ring is used, add 1 in. (25 mm).
Major torque-tube manufacture
(249B, 249C, 2449K, 249N, 259B)
Displacer + 9 in. (229 mm)
Masoneilan (Torque tube
operated), proprietary flange
Displacer + 8 in. (203 mm)
Other - torque tube
(2)
(2) For other manufacturers, there are small variations. This is an approximate value, actual length should be verified.
Displacer + 8 in. (203 mm)
Magnetrol (spring operated)
(3)
(3) Lengths vary depending on model, SG and rating, and should be verified.
Displacer + between 7.8 in. (195 mm) to 15 in. (383 mm)
Others - spring operated
(2)
Displacer+19.7 in. (500 mm)