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List of abbreviations
C.1 List of abbreviations
Abbreviation/symbol
PA
PA
PC
PCS
PDM
PE
PE
PI
ppm
PROFIBUS
psi
PTB
PTFE
PVDF
QAL
R22
RAM
rel.
RH
ROM
RS
RS 232
RS 485
s
s.
SELV
SF
6
SIPROM GA
SO
2
SW
t
T
TA Luft
TCP/IP
TÜV
U
LEL
USB
UV
V
224
Description
Process Analytics
Polyamide, a plastic
Personal Computer, a stationary single-user computer
Process Control System
Process Device Manager, software for operating devices
Polyethylene, a plastic
Protective Earth (conductor)
PROFIBUS International
parts per million (≙ 10
)
-6
Process Field Bus
pounds per square inch; 1 psi ≈ 69 hPa
Physikalisch-Technische Bundesanstalt (German technical inspectorate)
Polytetrafluoroethylene, a plastic, tradename e.g. Teflon
Polyvinylidenefluoride, a plastic, tradename e.g. Kynar
Quality Assurance Level
Common name for chlorodifluoromethane, CHClF
Random Access Memory
relative
Relative Humidity
Read Only Memory
Recommended Standard
(also EIA-232) Identifies an interface standard for a sequential, serial data
transmission
(also EIA-485) Identifies an interface standard for a differential, serial data
transmission
Second(s)
Refer to
Safety Extra Low Voltage
SF
= sulfur hexafluoride
6
Siemens Process Maintenance for Gas Analyzers
SO
= sulfur dioxide
2
Software
time
Temperature
Technical Instructions on Air Quality Control (Germany)
Transmission Control Protocol/Internet Protocol; a reference model for Internet
communication
Technischer Überwachungsverein, German Technical Inspectorate
Symbol for electric voltage
Lower Explosion Limit
Universal Serial Bus
Ultraviolet
Volt
2
Equipment Manual, 04/2022, A5E37100388-012
ULTRAMAT 23
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