Emerson Rosemount 3308A Reference Manual page 152

Specifications and Reference Data
August 2017
Figure A-12. Rigid Single Lead Probe
2.8 (71.3)
External antenna
(option WK1)
L 10 ft. (3 m)
for Ø 0.31 (8)
L 20 ft. (6 m)
for Ø 0.51 (13)
7.8 (198)
2.4 (62)
1.The Trim Near Zone (TNZ) function may be necessary or an Upper Null Zone (UNZ) setup may be required to mask the nozzle.
Dimensions are in inches (millimeters).
140
PRELIMINARY
3.9 (100.2)
12 (297.2)
Nozzle height (H)
H < 4 (100) + D
Ø D (Nozzle diameter)
Recommended: D > 4 (100)
Minimum: D=1.5 (38) for probe type 4A
D=2 (50) for probe type 4B
Min. 4 (100) if smooth metallic wall.
Min. 16 (400) if disturbing objects or
rugged metallic wall.
Ø 0.31 (8) or Ø 0.51 (13): SST probe
Ø 0.47 (12): PTFE covered probe
Min. 0.2 (5)
4.3 (110)
12 (297.2)
BSPP (G) 1-in., s52
BSPP (G) 1½-in., s60
3.4 (86)
(1)
(1)
Min. Ø 2 (50)
Tri Clamp PTFE covered probe and
connection protective plate
Alloy probe and
protective plate
Reference Manual
00809-0100-4308, Rev CA
NPT 1-in., s52
NPT 1½-in., s52
NPT 2-in., s60
Thread sealing
Min. 8 (200)
Chamber/pipe
The probe must be
in the center of the
probe/chamber
Protective plate
Protective plate
Specifications and Reference Data