Siemens ULTRAMAT 23 Series - Page 223

Abbreviation/symbol Description
kPa Kilopascal
l Liter
L Live wire
lb, lbs. pound(s), 1 lb. ≙ 435.6 g
LCD Liquid Crystal Display
LED Light Emitting Diode
m Meter
m
3
Cubic meter
max. Maximum
MR Measuring Range
MB = Mbit 10
6
bit
mbar Millibar, 1 mbar ≙ 1 hPa
mg Milligram
MHz Megahertz
min Minute(s)
MLFB Machine-readable Order No. (German Maschinenlesbare FabrikateBezeich‐
nung)
mm Millimeter
mm
2
Square millimeter
MPa Megapascal
mA Milliampere
mV Millivolt
MV Solenoid valve
MV Measured Value
N Neutral (conductor)
N
2
N
2
= nitrogen
N
2
O N
2
O = dinitrogen monoxide, common name laughing gas
nA Nanoampere
NAMUR Normenarbeitsgemeinschaft für Mess- und Regeltechnik in der chemischen
Industrie (standardization body for instrumentation and control technology in
the chemical industry)
NBR Nitrile Butadiene Rubber , a plastic, common name e.g. Buna
NC Not Connected
neg. negative
nF Nanofarad
NFPA National Fire Protection Association, a non-pro󹪝t 󹪝re protection organization in
the USA
NH
3
NH
3
= ammonia
NO NO = nitrogen monoxide
NO
2
NO
2
= nitrogen dioxide
NO
x
Name for total nitrogen oxides
No. Number
O
2
O
2
= oxygen
or similar or similar
List of abbreviations
C.1 List of abbreviations
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 223