Abbreviation/symbol
MΩ
NAMUR
n. g.
NC
No.
p
O
2
o. Ä.
OEL
PA
PC
pF
PNO
ppb
ppm
PROFIBUS
PTFE
QAL
RAM
rel.
RJ 45
ROM
RPM
RS 232
RS 485
RxD, RD
s
sec.
SIPROM GA
SV
SW
t
TA Luft
TC
TCP/IP
THC
TÜV
FIDAMAT 6
Operating Instructions, 03/2018, A5E00222135-03
Explanation
Megaohm
Normenarbeitsgemeinschaft für Mess- und Regeltechnik in der chemi-
schen Industrie
(standardization body for instrumentation
and control technology in the chemical industry)
If requried
Not Connected
Number
Symbol for pressure
Chem. formula for oxygen
Or similar
Occupational Exposure Limit
Process Analytics
Personal Computer
picofarad (10
farad)
-12
PROFIBUS-Nutzer-Organisation (PROFIBUS user organization)
parts per billion
parts per million
Process Field Bus, a standard for fieldbus communication
Polytetrafluoroethylene, a plastic, tradename e.g. Teflon
Quality Assurance Level
Random Access Memory
relative
RJ = Registered Jack, standard plug connection for telecommunication
cables
Read Only Memory
Revolutions Per Minute
(also EIA-232) Identifies an interface standard for a wired serial data
transmission
(also EIA-485) Identifies an interface standard for a wired differential, seri-
al data transmission
Received exchange Data
second
Section
Siemens Process Maintenance for Gas Analyzers
Solenoid valve
Software
Symbol for time
Technical Instructions on Air Quality Control (Germany)
Temperature compensation
Transmission Control Protocol/Internet Protocol; a reference model for
Internet communication
Total hydrocarbons
Technischer Überwachungsverein, German Technical Inspectorate
List of abbreviations
B.1 List of abbreviations
167