Emerson 3812 User 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 (

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)

W

watts (power unit)