Emerson 2200S User Manual

45

Note the following:

•

The density cutoff is applied to the volume (liquid) measurement. If the density drops below 
its configured cutoff value, the volume flow rate will go to zero.

•

The density cutoff is not applied to the GSV measurement. The measured density values are 
used in GSV calculations.

To configure the density cutoff:

•

Using the Communicator, select 

.

•

Using ProLink II, click 

.

Before configuring density damping, review the information in Section 4.10. 

To configure density damping:

•

Using the Communicator, select 

.

•

Using ProLink II, click 

.

Slugs – gas in a liquid process or liquid in a gas process – occasionally appear in some applications. 
The presence of slugs can significantly affect the process density reading. The slug flow parameters 
can help the transmitter suppress extreme changes in process variables, and can also be used to 
identify process conditions that require correction.

Slug flow parameters are as follows:

•

Low slug flow limit – the point below which a condition of slug flow will exist. Typically, this 
is the lowest density point in your process’s normal density range. Default value is 0.0 g/cm

3

; 

range is 0.0–10.0 g/cm

3

.

•

High slug flow limit – the point above which a condition of slug flow will exist. Typically, this 
is the highest density point in your process’s normal density range. Default value is 5.0 g/cm

3

; 

range is 0.0–10.0 g/cm

3

.

•

Slug flow duration – the number of seconds the transmitter waits for a slug flow condition 
(outside the slug flow limits) to return to normal (inside the slug flow limits).