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Reference Manual
00809-0100-4530, Rev BA
July 2009
Rosemount 5300 Series
3-10
NOTE!
The formulas are not valid when using Dynamic Vapor Compensation probes.
Replacing a Displacer in
an Existing Displacer
Chamber
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.
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.
Table 3-4. Required Probe
Length Depending on Chamber
Manufacturers
Replace
chamber flange
Displacer length
Probe
length
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)
Others - 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 Displacer + 19.7 in. (500 mm)