Справочник Пользователя для Emerson 2200S
Configuration and Use Manual
49
Configuring Process Measurement
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Figure 4-4
Configuring pressure compensation with ProLink II
4.10
Damping
Damping helps the transmitter smooth out small, rapid measurement fluctuations. A damping value
specifies the period of time, in seconds, over which the process variable value will change to reflect
63% of the change in the actual process.
specifies the period of time, in seconds, over which the process variable value will change to reflect
63% of the change in the actual process.
•
A high damping value makes the output appear to be smoother because the output must change
slowly.
slowly.
•
A low damping value makes the output appear to be more erratic because the output changes
more quickly.
more quickly.
Damping can be configured for flow, density, and temperature (see Sections 4.3.2, 4.7.3, and 4.8.2.).
When you specify a new damping value, it is automatically rounded down to the nearest valid
damping value. Valid damping values are listed in Table 4-8.
damping value. Valid damping values are listed in Table 4-8.
Note: For gas applications, Micro Motion recommends a minimum flow damping value of 2.56.
Before setting the damping values, review the following sections for information on how the damping
values interact with other transmitter measurements and parameters.
values interact with other transmitter measurements and parameters.
Table 4-8
Valid damping values
Process variable
Valid damping values
Flow (mass and volume)
0, 0.04, 0.08, 0.16, ... 40.96
Density
0, 0.04, 0.08, 0.16, ... 40.96
Temperature
0, 0.6, 1.2, 2.4, 4.8, ... 76.8
Enter Flow factor
Configure
Enter Density factor
Enter Cal pressure
Enter External Pressure
Enable External Pressure
Compensation
Enable
Apply
Enter Pressure units
Set measurement unit
Apply
View >
Preferences
Preferences
ProLink >
Configuration >
Pressure
Configuration >
Pressure
ProLink >
Configuration >
Pressure
Configuration >
Pressure
Apply
Apply
Done