Siemens LDS 6 - 5.2 Maintenance Request Alarm

Abbreviation / symbol Explanation
PE Protective Earth (terminal)
PN Pressure nominal
ppm Parts per million
ppmv Parts per million (by volume)
psi pounds per square inch - 1 psi ≙ 69 hPa
PUR Polyurethane, a plastic
RH Relative humidity
RJ-45 A cable connector plug type
Rx Receive (Rx) identi󹪝es a receiver
s, sec. Second
SMA Sub Miniature A, an optical 󹪝ber connector type
TÜV Technical Inspection Association (German: Technischer Überwachungs-
Verein)
Tx Transmit (Tx) identi󹪝es a transmitter
UKEX UK type examination zerti󹪝cate for products in hazardous areas
USgal/min US gallons per minute, a 󹪞ow unit,
1USgal/min ≙ 3.8l/min
UV Ultraviolet
V Volt
VA Volt-ampere
VDI German Engineers Association (German: Verein Deutscher Ingenieure)
W Watt(s)
Δ Di󹪜erence (Greek letter delta)
Ω Ohm(s) (Greek letter omega)
Abbreviations
A.1List of abbreviations
LDS 6 & Optics housing CD 6 Compact Operating Instructions
Compact Operating Instructions, 12/2022, A5E03314905-AB 67