Replacing A Displacer In An Existing Displacer Chamber - Emerson ROSEMOUNT 5300 Reference Manual

Rosemount 5300 Series
Replacing a Displacer in
an Existing Displacer
Chamber
Table 3-4. Required Probe
Length Depending on Chamber
Manufacturers
3-10
NOTE!
The formulas are not valid when using Dynamic Vapor Compensation probes.
A Rosemount 5300 Series transmitter is the perfect replacement for an
existing displacer chamber. To simplify installation, proprietary flanges are
offered to allow for using the same chambers.
Probe
length
Rosemount 5300 benefits
• No moving parts: Less maintenance - dramatically reduced costs, and
as a result, improved measurement availability
• Reliable measurement, that is independent of density, turbulence, and
vibrations
Considerations when changing to Rosemount 5300
When changing from a displacer to a Rosemount 5300 Series transmitter,
make sure to correctly match the 5300 Series flange choice and probe length
to the chamber. Both standard ANSI and EN (DIN), as well as proprietary
chamber flanges are available.
Table 3-4 shows probe length guidelines.
Chamber Manufacturer
Major torque-tube manufacture (249B,
249C, 2449K, 249N, 259B)
Masoneilan (Torque tube operated),
proprietary flange
(2)
Others - torque tube
(3)
Magnetrol (spring operated)
Others - spring operated
(1) If flushing ring is used, add 1 in. (25 mm).
(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.
Reference Manual
00809-0100-4530, Rev BA
Replace
chamber flange
Displacer length
(1)
Probe Length
Displacer + 9 in. (229 mm)
Displacer + 8 in. (203 mm)
Displacer + 8 in. (203 mm)
Displacer + between 7.8 in. (195 mm)
to 15 in. (383 mm)
Displacer + 19.7 in. (500 mm)
July 2009