Emerson 3051N User Manual
Reference Manual
00809-0100-4808, Rev CA
June 2008
Rosemount 3051N
G-2
Lower Range Value (LRV)
Lowest value of the measured variable that the analog output of the
transmitter is currently configured to measure.
transmitter is currently configured to measure.
Multidropping
The connection of several transmitters to a single communications
transmission line. Communication between the host and the transmitters
takes place digitally with the analog output of the transmitters deactivated.
Note that although the Rosemount 3051N has multi-drop capability,
which is a HART protocol feature, the Rosemount 3051N is not
qualified/dedicated for use in multi-drop mode.
transmission line. Communication between the host and the transmitters
takes place digitally with the analog output of the transmitters deactivated.
Note that although the Rosemount 3051N has multi-drop capability,
which is a HART protocol feature, the Rosemount 3051N is not
qualified/dedicated for use in multi-drop mode.
Reranging
Configuration function that changes the transmitter 4 and 20 mA settings. See
“Rerange” in Section 2 .
“Rerange” in Section 2 .
Send Data
HART-based communicator command that transfers configuration data from
the hand-held communicator’s memory to the transmitter memory.
the hand-held communicator’s memory to the transmitter memory.
Sensor Trim
Digital Trim function that allows you to adjust the digital process variable
reading to a precise pressure input. Zero Trim and Full Trim are the two
Sensor Trim functions. See “Sensor Trim” in Section 2 .
reading to a precise pressure input. Zero Trim and Full Trim are the two
Sensor Trim functions. See “Sensor Trim” in Section 2 .
Smart
Term used to describe instruments that are microprocessor-based and feature
advanced communications capabilities. See Section 1: Introduction.
advanced communications capabilities. See Section 1: Introduction.
SMART FAMILY
Rosemount pressure, temperature, level, and flow instruments with
microprocessor-based digital electronics.
microprocessor-based digital electronics.
Span
Algebraic difference between the upper and lower range values.
Tag
Eight-character field for identifying the transmitter. The tag is stored in the
transmitter and can be changed using the HART Communicator (Rosemount
275 or Rosemount 375) and the Transmitter Information function.
transmitter and can be changed using the HART Communicator (Rosemount
275 or Rosemount 375) and the Transmitter Information function.
Transmitter Address
Unique number (1-15) used to identify a multidropped transmitter.
Transmitters that are not multidropped have 0 as an address. Note that
although the Rosemount 3051N has multi-drop capability, which is a HART
Protocol feature, the Rosemount 3051N is not qualified/dedicated for use in
multi-drop mode.
Transmitters that are not multidropped have 0 as an address. Note that
although the Rosemount 3051N has multi-drop capability, which is a HART
Protocol feature, the Rosemount 3051N is not qualified/dedicated for use in
multi-drop mode.
Transmitter Security
Jumper-selectable feature that prevents accidental or deliberate changes to
configuration data. See “Transmitter Security” in Section 2 .
configuration data. See “Transmitter Security” in Section 2 .
Upper Range Limit (URL)
Highest value of the measured variable that the transmitter can be configured
to measure.
to measure.
Upper Range Value
(URV)
(URV)
Highest value of the measured variable that the analog output of the
transmitter is currently configured to measure.
transmitter is currently configured to measure.
Zero Trim
A zero-based, one-point adjustment used in differential pressure applications
to compensate for mounting position effects or zero shifts caused by static
pressure. See “Zero Trim” in Section 2 .
to compensate for mounting position effects or zero shifts caused by static
pressure. See “Zero Trim” in Section 2 .