Table of Contents
Advertisement
Optional Configuration
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 8-3.
Note: For gas applications, Micro Motion recommends a minimum flow damping value of 2.56.
Before setting the damping values, review Sections 8.5.1 and 8.5.2 for information on how the
damping values interact with other transmitter measurements and parameters.
To configure damping values:
•
Using ProLink II, see Figure C-2.
•
Using the Communicator, see Figure C-7.
Note: This functionality is not available via the display menus.
Table 8-3
Valid damping values
Process variable
Flow (mass and volume)
Density
Temperature
8.5.1
Damping and volume measurement
When configuring damping values, note the following:
•
Liquid volume flow is derived from mass and density measurements; therefore, any damping
applied to mass flow and density will affect liquid volume measurement.
•
Gas standard volume flow is derived from mass flow measurement, but not from density
measurement. Therefore, only damping applied to mass flow will affect gas standard volume
measurement.
Be sure to set damping values accordingly.
8.5.2
Interaction with the added damping parameter
The mA output has a damping parameter called Added Damping. If damping is configured for flow,
density, or temperature, the same process variable is assigned to the mA output, and added damping is
also configured for the mA output, the effect of damping the process variable is calculated first, and
the added damping calculation is applied to the result of that calculation.
See Section 6.5.4 for more information on the added damping parameter.
8.6
Configuring the flow direction parameter
The flow direction parameter controls how the transmitter reports flow rate and how flow is added to
or subtracted from the totalizers, under conditions of forward flow, reverse flow, or zero flow.
•
Forward (positive) flow moves in the direction of the arrow on the sensor.
•
Reverse (negative) flow moves in the direction opposite of the arrow on the sensor.
Configuration and Use Manual
Valid damping values
0, 0.04, 0.08, 0.16, ... 40.96
0, 0.04, 0.08, 0.16, ... 40.96
0, 0.6, 1.2, 2.4, 4.8, ... 76.8
75
Advertisement
Table of Contents
