Rosemount 5300 Series

Reference Manual

00809-0100-4530, Rev BA July 2009

Replacing a Displacer in

an Existing Displacer

Chamber

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.

 

Replace

 

chamber flange

Probe

Displacer length

length

Table 3-4. Required Probe Length Depending on Chamber Manufacturers

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 3-4shows probe length guidelines.

Chamber Manufacturer

Probe Length(1)

Major torque-tube manufacture (249B,

Displacer + 9 in. (229 mm)

249C, 2449K, 249N, 259B)

 

 

 

Masoneilan (Torque tube operated),

Displacer + 8 in. (203 mm)

proprietary flange

 

Others - torque tube(2)

Displacer + 8 in. (203 mm)

Magnetrol (spring operated)(3)

Displacer + between 7.8 in. (195 mm)

to 15 in. (383 mm)

 

Others - spring operated

Displacer + 19.7 in. (500 mm)

 

 

(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.

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Emerson Process Management manual Replacing a Displacer An Existing Displacer Chamber, Rosemount 5300 benefits