New Holland EH45, Service Manual

Page: 14 / 41

01
–1–5
(1)Base Units [ Table 3-1 ]
QUANTITY UNIT SYMBOL
m
kg
s
A
K
mol
cd
(2)Supplementary Units [ Table 3-2 ]
QUANTITY UNIT SYMBOL
Plane angle radian rad
Solid angle steradian sr
(3)Derived Units [ Table 3-3 ]
QUANTITY UNIT SYMBOL
m
2
m
3
m/s
m/s
2
kg/m
3
[ Table 3-4 ]
QUANTITY UNIT SYMBOL FORMULA
Frequency Hertz Hz 1/s
Force Newton N kg
•
m/s
2
Pressure and Stress Pascal Pa N/m
2
Energy, Work Joule J N
•
m
and Quantity
of heat
Power Watt W J/s
Quantity of Coulomb C A
•
s
electricity
Electric Volt V W/A
potential
difference,
Voltage, and
Electromotive
force
Quantity of
Farad F C / V
static electricity
and Electric
capacitance
Electric Ohm
Ω
V / A
resistance
Celcius
Celcius degree ˚C (t+273.15)K
temperature or degree
Illuminance Lux lx lm/m
2
(5)Prefixes of SI [ Table 3-5 ]
(4)Derived Units bearing Peculiar Designations
PREFIX
MULTIPLI-
SYMBOL
CATION FACTORS
G
M
k
h
da
d
c
m
µ
n
p
(6)Unit Conversion [ Table 3-6 ]
QUANTITY JIS SI CONVERSION FACTOR
kgf
kg
kgf N 1 kgf=9.807 N
kgf
•
m N
•
m 1 kgf
•
m=9.807 N
•
m
kgf/cm
2
MPa 1 kgf/cm
2
=0.09807 MPa
PS kW 1 PS=0.7355 kW
rpm min
-1
r/min
*
1
*
1 Units that are allowed to use
SI unit
system
Prefixes of SI
(n-th power of 10, where n is an integral)
Table 3-5
SI units
Base units
Table 3-1
Derived
units
10
9
10
6
10
3
10
2
10
10
-1
10
-2
10
-3
10
-6
10
-9
10
-1 2
Supplemen-
tary units
Table 3-2
Derived units
bearing peculiar
designations
Table 3-4
Derived units
of base units
Table 3-3
square metre
cubic metre
metre per second
metre per second squared
kilogram per cubic metre
Area
Volume
Velocity
Acceleration
Density
Giga
Mega
Kilo
Hecto
Deca
Deci
Centi
Milli
Micro
Nano
Pico
Length
Mass
Time
Electric current
Thermodynamic
temperature
Amount of substance
Luminous intensity
metre
kilogram
second
ampere
kelvin
mol
candela
–
–
Weight
Mass
Force
Torque
Pressure
Motive power
Revolution
3. INTERNATIONAL UNIT CONVERSION SYSTEM
(Based on MARKS' STANDARD HANDBOOK FOR MECHANICAL ENGINEERS)
Introduction
Although this manual uses the JIS unit system, if
you need SI unit, refer to the following international
system of units.
Given hereinafter is an excerpt of the units that
are related to this manual :
1. Etymology of SI Units
French:Le Systéme International d' Unités
English:International System of Units
2. Construction of SI Unit System