4
Acronyms, abbreviations and definitions
Section 1: Introduction
Daniel 3812 Liquid Ultrasonic Flow Meter Installation Manual
June 2017
3-9000-765 Rev H
m
meter (length unit)
m
3
/d
cubic meters per day (volumetric flow rate)
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 (
μ
inch)
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 absolute (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
meter 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
ready to 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)
Table 1-1 Acronyms, abbreviations and definitions
Acronym or abbreviation
Definition