Figure 3-5: Existing Displacer Chamber
$
&
%
A. Replace chamber flange
B. Probe length
C. Displacer length
Considerations when changing to Rosemount 3308 Series:
•
The Rosemount 3308 Series flange choice and probe length must be correctly matched
to the chamber. Both standard ASME and EN (DIN), as well as proprietary chamber
flanges, are available. See
to identify the proprietary flanges.
•
for guidelines on which disc size to use.
•
for guidelines on the required probe length.
Table 3-5: Required Probe Length in Chambers
Chamber manufacturer
Probe length
Major torque-tube manufacture (249B, 249C,
249K, 249N, 259B)
Dis 9 in. (229 mm)
Masoneilan
™
(torque tube operated),
proprietary flange
Dis 8 in. (203 mm)
Dis 8 in. (203 mm)
Magnetrol
®
(spring operated)
Dis between 7.8 in. (195 mm) to 15 in.
(383 mm)
Dis 19.7 in. (500 mm)
(1)
If flushing ring is used, add the ring height to the probe length.
(2)
For other manufacturers, there are small variations. This is an approximate value; actual length
should be verified.
(3)
Lengths vary depending on model, SG, and rating, and should be verified.
For additional information, see the Replacing Displacers with Guided Wave Radar
Probe type in chamber considerations
When installing a Rosemount 3308A in a chamber, the single lead probe is recommended.
The probe must not touch the chamber wall, should extend the full height of the chamber,
but not touch the bottom of the chamber.
Installation
Reference Manual
February 2020
00809-0100-4308
30
Rosemount 3308 Series
Содержание Rosemount 3308A
Страница 8: ...Contents Reference Manual February 2020 00809 0100 4308 viii Rosemount 3308 Series ...
Страница 10: ...Introduction Reference Manual February 2020 00809 0100 4308 10 Rosemount 3308 Series ...
Страница 22: ...Transmitter overview Reference Manual February 2020 00809 0100 4308 22 Rosemount 3308 Series ...
Страница 74: ...Installation Reference Manual February 2020 00809 0100 4308 74 Rosemount 3308 Series ...
Страница 96: ...Configuration Reference Manual February 2020 00809 0100 4308 96 Rosemount 3308 Series ...
Страница 194: ...Product Certifications Reference Manual February 2020 00809 0100 4308 194 Rosemount 3308 Series ...
Страница 222: ...Configuration parameters Reference Manual February 2020 00809 0100 4308 222 Rosemount 3308 Series ...