Abbreviation / symbol Explanation
FKM Fluorocarbon elastomer
ft foot, feet - 1ft ≙ 30.48cm
H
2
Hydrogen (molecular formula)
H
2
O Water (vapor)
HCl Hydrogen chloride
HF Hydrogen fluoride
hPa hectoPascal
i. e. This means (from Latin: id est)
IEC Internation Electrotechnical Committee
I/O Input/Output
IP Ingress protection
kg Kilogram
kHz Kilohertz
kPa Kilopascal
l/min Liters per minute, a ow unit
lb(s). Pound(s), 1 lb ≙ 454g
lbf Pound-force, a unit for powers, 1 lbf ≙ 4.45N
LVD Low Voltage Directive
m Meter
mA Milliampere
MAWP Maximum allowable work pressure
max. Maximum
MCERTS Monitoring Certication Scheme (of the Environment Agency of Eng‐
land & Wales)
mg/Nm
3
Milligrams per normal cubic meter (at 0°C and 1.013hPa)
mH Millihenry(s)
min. Minimum
MLFB Machine-readable product number (German: Maschinenlesbare Fabri‐
katenummer)
mm Millimeter
mm² Square millimeters
MPa Megapascal
N Newton
N
2
Nitrogen (molecular formula)
NAMUR Standards working committee for measuring and control technology in
the chemical industry.
NC, n. c. Not connected
nF Nanofarad(s)
NFPA National Fire Protection Association
NH
3
Ammonia
Nm Newtonmeter, a measure of torque
No. Number
O
2
Oxygen (molecular formula)
Abbreviations
A.1List of abbreviations
LDS 6 & Optics housing CD 6 Compact Operating Instructions
66 Compact Operating Instructions, 12/2022, A5E03314905-AB