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4 Acronyms, abbreviations and definitions
Section 1: Introduction Daniel 3812 Liquid Ultrasonic Flow Meter Installation Manual
May 2015 3-9000-765 Rev H
m
3
/h
cubic meters per hour (volumetric flow rate)
m
3
/s
cubic meters per second (volumetric flow rate)
mA milliamp (current unit)
MAC Address Media Access Control (Ethernet Hardware Address -EHA)
microinch (
μinch)
microinch (10
-6
in)
micron
micrometer (10
-6
m)
MMU Memory Management Unit
MPa
Megapascal (equivalent to 10
6
Pascal) (pressure unit)
N/A not applicable
Nm
3
/h
normal cubic meters per hour
NOVRAM non-volatile random access memory
Pa Pascal, equivalent to 1 newton per square meter (pressure unit)
Pa⋅s Pascal Second (viscosity unit)
PC Personal Computer
PFC peripheral field connection (board)
P/N part number
PS power supply (board)
psi pounds per square inch (pressure unit)
psia pounds per square inch absol
ute (pressure unit)
psig pounds per square inch gage (pressure unit)
R Radius
rad radian (angle)
RAM Random Access Memory
Remote Mount Option Detaching the transmitter electronics enclosure and base electronics enclosure from
me
ter body and mounting and affixing them with the mounting bracket to a pole or
other structure.
RTS Request-to-Send; the RS-232C handshaking signal output by a receiver when it is
re
ady t
o receive data
RTU MODBUS A Modbus protocol framing format in which elapsed time between received charac-
ters is used to separate messages. RTU stands for Remote Terminal Unit.
s second (time unit, metric)
SDRAM Synchronous Dynamic Random Access Memory
sec second (time unit, U.S. Customary)
TCP/IP Transmission Control Protocol/Internet Protocol
time_t seconds since Epoch (00:00:00 UTC Jan. 1, 1970) (time unit)
UDP User Datagram Protocol
U.L. Underwriters Laboratories, Inc. - product safety testing
and certification organization
V volts (electric potential unit)
W watts (power unit)
Table 1-1 Acronyms, abbreviations and definitions
Acronym or abbreviation Definition