Honeywell SmartLine SLN 700 Series User Manual page 50

Latching Mode: A parameter in the Level transmitter Advanced Display which allows for the
selection of the behavior of the Level transmitter in the event of a critical error. In this mode,
the transmitter wills stay in the critical error state until a user performs a hardware or software
reset.
Lower Range Value (LRV): A Basic configuration parameter which allows users to enter the
measuring value for which the analog output will be scaled to 4 mA.
Lower Product: The heavier liquid when two liquids exist in a vessel (e.g. water in an
oil/water measurement application).
Maintenance Mode: A mode that the transmitter supports to communicate to external systems
that it is not available for process measurement.
Maximum Level Speed: Used to define the Maximum rate of filling or emptying. Default
setting is 0.2m/s
NAMUR NE 43: NAMUR is an international association of process instrumentation user
companies. NE 43 is a NAMUR recommendation to promote a standardization of the 4-20mA
signal level for failure information. Normal 2-wire transmitters use the 3.8 to 20.5mA signal
range for measurement information, with ≥21mA or ≤3.6mA to indicate diagnostic failures.
National Pipe Thread (NPT): A U.S. standard for tapered threads used on threaded pipes and
fittings.
Operating Range: The range of conditions in which the transmitter is designed to
operate.
PACTWare: A software application for instruments that is based on FDT technology. It can
be used to load and run a manufacturer's DTM for a specific instrument.
Precision: The closeness of agreement between the results obtained by applying a
measurement procedure several times on identical materials and under prescribed
measurement conditions. The smaller the random part of experimental error, the more
precise the measurement procedure.
Printed Wiring Assembly (PWA): Also known as a printed circuit assembly. It is a
populated electronics board.
Process Variable (PV): A dynamic feature of the process which may change rapidly and is
measured. The PV is the only dynamic variable sent via analog signal, in HART transmitters,
to the control system.
Quaternary Variable (QV): The fourth dynamic feature of the process which may change
rapidly and is measured. (HART only)
Random Access Memory (RAM): A type of computer data storage. Data is accessed
randomly where any byte of memory can be accessed without touching the preceding byte.
Reproducibility: The closeness of agreement between independent results obtained in the
normal and correct operation of the same method on identical test material, in a short
space of time, and under the same test conditions (such as the same operator, same
apparatus, same laboratory).
Safe Failure Fraction (SFF): The fraction of the overall failure rate of a device that results in
either a safe fault or a diagnosed unsafe fault.
Page 42 SLN 700 SmartLine NCR Level Transmitter User's Manual Revision 1