44
Reference Manual
00809-0100-4803, Rev GA
Configuration
September 2017
Configuration
2.7.2
Energy rate
(Fully compensated mass and energy flow feature board only)
Note
Energy Rate calculations are only available for certain fluid types.
The
Energy
tab allows the user to configure the settings associated with the energy flow.
Under the
Energy Rate Setup
heading, edit the Energy Rate
Units
and
Damping
values as needed. The
energy rate calculation within the device uses undamped process variables. Energy rate damping is set
independently of flow rate damping and measured process variables.
Under the
Custom Units Setup
heading, the user may configure a custom unit for the energy rate
measurement. Custom units allow the energy rate to be displayed in units of measure that are not
standard in the Rosemount 3051SMV.
Note
If the energy rate is configured as the primary variable and is being output via the 4-20 mA signal, verify
the 4–20 mA range (LRV and URV) after completing the custom unit configuration. For more
information on verifying the 4–20 mA range, see
“Basic device configuration” on page 24
Follow these steps to configure a custom unit:
a.
Custom Unit
: Enter the desired custom unit label to be displayed for the energy rate. Up to five
characters including letters, numbers, and symbols can be entered in the custom unit field.
Note
It is recommended that the Custom Unit be entered in upper case letters If lower case letters are entered,
the LCD display will show upper case letters. Additionally, the following special characters are recognized
by the LCD display: hyphens (“-”), percent symbols (“%”), asterisks (“*”), forward slashes (“/”) and
spaces. Any other character entered for the Custom Unit will be displayed as an asterisk (“*”) on the LCD
display. The following warning will be returned indicating these changes: “Custom Unit contains
characters that will display in upper case or asterisks on LCD display. The DCS will display as entered.”
b.
Base Unit
: From the drop-down menu, select a base unit to be used for the custom unit
relationship.
c.
Base per Custom
: Enter a numeric value that represents the number of base units per one
custom unit. The Rosemount 3051SMV uses the following convention:
Base per Custom =
Example
Custom Unit: kg
Base Unit: g
Because:
1 kg (Kilogram) = 1000 g (Grams)
Base per Custom =
=
= 1000
The values of Base per Custom for common energy units are shown in
.
Mass and energy flow Fast Keys
1, 4, 1, 2
Number of Base Units
1
x
Custom
x
Unit
----------------------------------------------------------------------
Number of Base Units
1
x
Custom
x
Unit
----------------------------------------------------------------------
1000 g
⋅
1 kg
⋅
---------------------
Содержание 3051S Series
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