Equivalence Between Units - Imperial And Si Systems; Prefixes Of Technical Units - MASSEY FERGUSON 2650 Service Manual

2. Equivalence between units - Imperial and SI systems

Quantities
Distance
Area
Volume
Mass
Specific mass
Specific volume
Power
Speed
Speed
Torque
Ideal pressure
Flow rate
Time
Energy
Power

3. Prefixes of technical units

✔
To form multiples or sub-multiples of a base unit,
simply add the desired prefix/symbol in front of
it. .
To multiply the unit volt by 1000: kilo + volt =
kilovolt and k + V = kV.
To divide the unit volt by 1000: milli + volt
= millivolt and m + V = mV.
4 These prefixes can also be used with non-SI
units:
millibar, kilocalorie, megaton, hectoliter, etc
✔
For historical reasons, the name of the basic unit
of mass has a prefix: kilogram. For this reason,
multiples and submultiples of this unit are
formed using the gram.
HD Series 2600
Units
I S I
MPERIAL YSTEM NTERNATIONAL SYSTEM
foot m
foot³ m²
foot³ m³
lb kg
lb/foot³ kg/m³
foot³/lb m³/kg
lbf newton - N
foot/s m/s
grad/s rad/s
lbf.foot N.m
lbf/foot² N/m² (or Pa
foot³/s m³/s
s s
lbf.foot J
Btu W
Introduction
- SI P
RACTICAL OR DERIVED UNITS
mm, cm, km
mm², cm², km², ha, alqueire...
mm³, cm³, l, gallon
g
g/cm³, g/l, kg/l
cm³/g, l/kg
kgf, dyne
km/h, m/min
rpm, rps
m.kgf, cm.kgf
kgf/m², kgf/cm², kgf/mm²
m³/h, l/h, l/min, l/s
min, h
kgf.m
hp, cv
01
01A01-21