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DOC

Z1

Z1

.5

TABLE 1 - CONVERSION BETWEEN SYSTEMS OF MEASUREMENT

TABLE 2 - TEMPERATURE CONVERSION

TABLE 4 - PRESSURE UNIT CONVERSION FACTORS

TECHNICAL DOCUMENTATION

CONVERSION TABLES

Technical system

and CGS system

Multiply by

International system

Multiply by

British system

Length

m

1

m

0.0254

in (inch)

m

0.3048

ft (foot)

Time

s

1

s

1

s

Area

m

2

1

m

2

0.000645

in

2

m

2

0.0929

ft

2

Volume

m

3

1

m

3

16.39·10

–4

in

2

m

3

0.02832

ft

2

Speed

m·s

–1

1

m·s

–1

0.3048

ft·s

–1

Acceleration

m·s

–2

1

m·s

–2

0.3048

ft·s

–2

Mass

kg·s

2

·m

–1

9.81

kg

0.4536

lb (pound)

kg

14.594

slug = lb ƒ ·s

2

·ft

–1

Force

kg o kp

9.81

N

4.4483

lb ƒ (pound)

kg

0.981

da N = 10 N

Torque

kg·m

9.81

N·m

1.356

lb ƒ ·ft

Density

kg·s

2

·m

–1

9.81

kg·m

–3

16.02

lb·ft

–3

Specific weight

kg·m

–1

9.81

N·m

–3

157.16

lb ƒ ·ft

–3

Work, energy

kg·m

9.81

J

1.356

lb ƒ ·ft

KWh = 3.6·10

6

J

Heat

Cal

4186

J

1055.1

BTU

Power

kg·m·s

–1

9.81

W

1.3558

lb ƒ ·ft·s

–1

CV

735

W

745.7

HP

Pressure

kg·m

–2

9.81

Pa

6.8948·10

p.s.i.=lb ƒ ·in

–2

kg·cm

–2

9.81·10

Pa

kg·cm

–2

0.981

bar = 10

5

Pa

Mass flow

kg·s·m

–1

9.81

kg·s

–1

0.4536

lb·s

–2

Volume flow

m

3

·s

–1

1

m

3

·s

–1

0.02832

ft·s

–1

Nl/min

–1

0.0000167

Nm

3

· S

–1

0.000472

scfm

Dynamic viscosity

kg·s·m

–2

9.81

Pa·s

6.896

lb ƒ ·s·in

–2

Po (poise-system CGS)

0.1

Pa·s

Kinematic viscosity

m

2

·s

–2

1

m

2

·s

–2

0.0929

ft

2

·s

–1

St (stokes-system CGS)

10

–4

m

2

·s

–2

Technical system

and CGS system

Divide by

International system

Divide by

British system

Source units

Pa

kPa

MPa

bar

mbar

kp/cm

2

cm H

2

O mm H

2

O mm Hg

p.s.i.

Pa

1

10

–3

10

–5

10

–5

10

–2

10.1972·10

–6

10.1972·10

–3

101.972·10

–3

7.50062·10

–3

0.145038·10

–3

kPa

10

3

1

10

–3

10

–2

10

10.1972·10

–3

10.1972

101.972

7.50062

0.145038

MPa

10

6

10

3

1

10

10

4

10.1972

10.1972·10

3

101.972·10

3

7.50062·10

3

0.145038·10

3

bar

10

5

10

2

10

–1

1

10

3

1.01972

1.01972·10

3

10.1972·10

3

750.062

14.5038

mbar

100

0.1

10

–4

10

–3

1

1.01972·10

–3

1.01972

10.1972

0.750062 14.5038·10

–3

kp/cm

2

98066.5

98.0665

98.0665·10

–3

0.989665 980.665

1

1000

10.000

735.559

14.2233

cm H

2

O

98.0665

98.0665·10

–3

98.0665·10

–6

0.98665·10

–3

0.98665

10

–3

1

10

0.735559 14.2233·10

–3

mm H

2

O

9.80665

9.80665·10

–3

9.80665·10

–6

98.0665·10

–6

98.0665·10

–3

10

–4

0.1

1

73.5559·10

–3

14.2233·10

–3

mm Hg

133.322

133.322·10

–3

133.322·10

–3

1.33322·10

–3

1.33322

1.35951·10

–3

1.35951

13.5951

1

19.3368·10

–3

p.s.i.

6894.76

6.89476

6.89476·10

–3

68.9476·10

–3

68.9476

70.307·10

–3

70.307

703.07

51.7149

1

To obtain the pressure for the following units, multiply the number given for the source units by the coefficient shown.

TABLE 3 - MULTIPLES AND SUB-MULTIPLES

Name

Symbol

Value

tera

T

10

12

giga

G

10

9

mega

M

10

6

kilo

k

10

3

etto

h

10

2

deca

da

10

deci

d

10

–1

centi

c

10

–2

milli

m

10

–3

micro

m

10

–6

nano

n

10

–9

pico

p

10

–12

°F = [1.8 · °C] + 32

°C = [°F - 32] · 0.55

K = °C + 273

°C = degrees Celsius

K = degrees Kelvin

°F = degrees Fahrenheit