9
GLOSSARY
EN
62
SYMBOLS AND UNITS OF MEASUREMENT
SYMBOL
UNIT OF MEASUREMENT
DESCRIPTION
EXAMPLE
α
degree
Rotation/inclination angle
1°
cm
2
square centimetre
Area
1 cm
2
Ø
millimetre
Circumference
Ø 1 mm
Nm
newton-metre
Torque
1 Nm
mm
millimetre
Length
1 mm
µm
1/1000 of a millimetre (micron)
1 µm
H
hour
Time
1 h
g/kW
grammes per kilowatt per hour
Specific consumption
1 g/kWh
kg/h
kilogramme per hour
Max. flow rate
1 kg/h
Lt./min.
litres per minute
Flow rate
1 Lt./min.
Lt./h
litres per hour
1 Lt./h
ppm
parts per million
Percentage
1 ppm
N
newton
Force
1 N
A
Ampere
Intensity of electrical current
1 A
gr.
gramme
Weight
1 gr.
kg
kilogramme
1 kg
W
Watt
Power
1 W.
kW
kiloWatt
1 kW
pa
pascal
Pressure
1 pa
KPa
Kilopascal
1 KPa
bar
barometric pressure
1 bar
mbar (1/1000
bar)
barometric pressure
1 mbar
R
Resistance
Resistance to electrical current (referred
to a component)
1 Ω
Ω
ohm
Resistance of electrical current
1 Ω
Rpm
revs per minute
Rotation of an axis
1 Rpm
Ra
average roughness expressed
in microns
Roughness
1 Ra
°C
degree centigrade
Temperature
1°C
V
Volt
Electrical voltage
1 V
millimetre
Hex-head capscrew
1 mm
cm
3
cubic centimetre
Volume
1 cm
3
Lt.
litre
1 Lt.