Rosemount 3144 - Page 115

Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
G-2
Format Functions Set-up functions performed with a HART communicator and
transmitter that configure the transmitter for a specific sensor input
and adjust the transmitter electronics to conform to plant standards.
Characterize and Digital Trim are the two Format functions.
HART (Highway
Addressable Remote
Transducer) Protocol
Communications standard that provides simultaneous analog and
digital signal transmission between control rooms and field devices
such as transmitters. All Rosemount SMART FAMILY products
communicate using the HART protocol.
Hot Backup Automatic redundancy for Sensor 1.
Lower Range Limit (LRL) Lowest value of the measured variable that the transmitter can be
configured to measure.
Lower Range Value (LRV) Lowest value of the measured variable that the transmitter is currently
configured to measure in the 4–20 loop. Digital output is not affected by
the LRV.
Message 24-character field for any additional information the user may want to
include.
Multidropping The connection of several transmitters to a single communications
transmission line.
Off-Line Configuration Using a HART communicator to enter and store configuration data
without a transmitter connected. The data can later be downloaded to
one or more transmitters.
Off-Line Memory Memory location in a HART communicator that stores transmitter
configuration data that was entered off-line for later downloading to a
transmitter.
Off-Line Operation Any of several functions that may be performed with a HART
communicator without a transmitter connected.
On-Line Configuration Configuration of the transmitter operational parameters using a HART
communicator connected to a transmitter.
Output Trim Digital Trim function that allows you to alter the transmitter’s
conversion of the input sensor signal into a 4–20 mA output. Output
Trim and Sensor Trim are the two Digital Trim functions.
Reranging Configuration function that changes the transmitter 4 and 20 mA
settings.
Safe Memory Memory location in a HART communicator where existing transmitter
information can be saved upon start-up.
Send Data A HART communicator command that transfers configuration data
from the hand-held communicator’s Working Register to the
Transmitter Memory.
Sensor Trim Digital Trim function that allows you to alter the transmitter’s
interpretation of the input signal. Sensor Trim and Output Trim are
the two Digital Trim functions.