Werbung
FATTORI DI CONVERSIONE E TABELLE
°F -32
Temperatura: °C=
; °F= (1,8 x °C) + 32
1,8
Misura pressione: mm = 0,03937 in
cm = 0,3937 in
m
= 39,37 in
f
forza
p=
= pressione =
m
2
superficie
Secondo il sistema internazionale la misura di pressione si espri-
me in Pascal.
1 Pa=1N/m
2
=1 Newton/metro quadrato.
Le unità ingegneristiche più note per la misura di pressione sono:
Pascal = Pa (N/m
2
), kPa = 10
3
Pa, MPa = 10
bar
= bar, mbar = bar x 10
-3
metri di colonna d'acqua a 4°C = mH
O, mmH
2
millimetri di colonna di mercurio a 0°C
= mmHg, Torr
atmosfera teorica
= at (kp/cm
atmosfera fisica
= atm
pollice di colonna d'acqua a 4°C
= inc H
pollice di colonna di mercurio a 0°C
= inc Hg
micro di colonna di mercurio a 0°C
= µm Hg
pound per square inch
= psi
UMWANDLUNGSFAKTOREN UND TABELLEN
°F -32
Temperatur: °C=
; °F= (1,8 x °C) + 32
1,8
Druckmeßung:
mm = 0,03937 in in = 25,4 mm
cm = 0,3937 in
in = 2,54 cm
m = 39,37 in
in = 2,54x10
f
Kraft
p=
= Druck =
m
Oberfläche
2
Im internationalen System wird Druck in Pascal gemessen.
1Pa=1N/m
2
=1 Newton/m
2
.
Die bekanntesten technischen Einheiten für Druckmessung sind:
Pascal = Pa (N/m
2
), kPa = 10
3
Pa, MPa = 10
bar
= bar, mbar = bar x 10
-3
Meter Wassersäule bei 4°C = mH
O, mmH
2
Millimeter Quecksilbersäule bei 0°C = mmHg, Torr
Technische Atmosphäre
= at (kp/cm
Physikal. Atmosphäre
= atm
Zoll Wassersäule bei 4°C
= inc H
Zoll Quecksilbersäule bei 0°C
= inc Hg
Mikrometer Quecksilbersäule bei 0°C = µm Hg
Pound per square inch
= psi
PA
kPa
MPa
2
N / m
-3
-6
1
10
10
3
-3
10
1
10
6
3
10
10
1
5
10
100
0.1
-4
100
0,1
10
-3
9807
9.807
9.807 - 10
9.807
3
-6
9.807 - 10
9.807 - 10
-6
133.32
0.13332
133.32 - 10
3
-3
98.07 - 10
98.07
98.07 - 10
5
1.013 - 10
101.3
0.1013
-3
249.1
0.2491
0.2491 - 10
-3
3386
3.386
3.386 - 10
0.13332
-6
-6
133.32 - 10
0.1333 - 10
-3
6894.8
6.8948
6.8948 - 10
Force
1 N = 0,101 971 6 kp = 101,97621 p
-3
1 p = 9,806 65 - 10
N
1 kp = 9,806 65 N
Power
-3
1 W = 1 J/s = 1,359 621 6 - 10
PS
1 kW = 1,359 621 6 PS
1 PS = 735,498 75 W = 0,735 498 75 kW
Viscosity
Dinamic viscosity
1 Pa - s = 10 P (Poise)
-1
1 P
= 10
Pa - s
Kinematic viscosity
2
4
1 m
/s = 10
St (Stokes)
-4
2
1 St
= 10
m
/s
CONVERSION FACTORS AND TABLES
Temperature: °C=
in = 25,4 mm
Pressure measurement: mm = 0,03937 in in = 25,4 mm
in = 2,54 cm
in = 2,54x10
-2
m
f
p=
= pressure =
m
2
According to the international system, pressure measurement is
expressed in Pascal.
1 Pa=1N/m
2
=1 Newton/square metre.
The most widely known engineering units for measuring pressu-
6
Pa
re are:
Pascal = Pa (N/m
O = mH
O x 10
-3
bar
= bar, mbar = bar x 10
2
2
meter of water column at 4°C = mH
2
)
millimetres of mercury column at 0°C
theoretical atmosphere
O
physical atmosphere
2
inch of water column at 4°C
inch of mercury column at 0°C
micron of mercury column at 0°C
pound per square inch
FACTORES DE CONVERSION Y TABLAS
Temperaturas: °C=
Presiones:
mm = 0,03937 pulgadas
-2
m
cm = 0,3937 pulgadas
m = 39,37 pulgadas
f
p=
= presión =
m
2
En el sístema internacional, las presiones se expresan en
Pascales.
6
Pa
1 Pa=1N/m
2
=1 Newton/metro cuadrato.
Las unidades màs utilizadas en ingeniería para medir presiones
O = mH
O x 10
-3
son:
2
2
Pascal = Pa (N/m
2
)
bar
= bar, mbar = bar x 10
metros de columna de agua a 4°C = mH
O
milímetros de columna de mercurio a 0°C = mmHg, Torr
2
Atmósferas teóricas
Atmósferas fisicas
Pulgadas de columna de agua a 4°C
Pulgadas de columna de mercurio a 0°C = inc Hg
Micras de columna de mercurio a 0°C
Libras por pulgada cuadrada
mH
O
bar
mbar
2
-5
-2
10
10
0.1020 - 10
-2
10
10
0.1020
4
10
10
102.0
3
1
10
10.20
-3
10
1
10.20 - 10
-3
98.07 - 10
98.07
1
-6
-3
-3
98.07 - 10
98.07 - 10
10
-3
1.333 - 10
1.333
13.59 - 10
0.9807
980.7
10
1.013
1013
10.33
-3
2.491 - 10
2.491
25.4 - 10
-2
3.386 - 10
33.86
0.3453
-6
-3
1.333 - 10
1.333 - 10
13.59 - 10
-2
6.8948 - 10
68.948
0.7031
Energy
Work
N - m
Heat quantity
1 J
=
1
1 N - m
1 W - s
=
3600
1 W - h
=
3,6 - 10
1kW - h
=
4,186 8
1 cal
=
4,186 8
1 kcal
- 10
=
9,806 65
1 kp - m
=
1,055 055 9
1 BTU
- 10
°F -32
; °F= (1,8 x °C) + 32
1,8
cm = 0,3937 in
in = 2,54 cm
m
= 39,37 in
in = 2,54x10
force
surface
2
), kPa = 10
3
Pa, MPa = 10
6
Pa
-3
O, mmH
O = mH
O x 10
2
2
2
= mmHg, Torr
= at (kp/cm
2
)
= atm
= inc H
O
2
= inc Hg
= µm Hg
= psi
°F -32
; °F= (1,8 x °C) + 32
1,8
pulgada = 25,4 mm
pulgada = 2,54 cm
pulgada = 2,54x10
-2
m
fuerza
superficie
2
), kPa = 10
3
Pa, MPa = 10
6
Pa
-3
O, mmH
O = mH
2
2
2
= at (kp/cm
2
)
= atm
= inc H
O
2
= µm Hg
= psi
Torr
at
mmH
O
2
mmHg
kp / cm
-3
-3
0.1020
7.501 - 10
10.20 - 10
102.0
7.501
10.20 - 10
3
102.0 - 10
7501
10.20
3
10.20 - 10
750.1
1.020
-3
10.20
0.7501
1.020 - 10
-3
10
73.56
0.1
-3
-4
1
73.56 - 10
10
-3
13.59
1
1.359 - 10
4
10
735.6
1
3
10.33 - 10
760
1.033
-3
25.4
1.8684
2.54 - 10
345.3
25.4
3.453 - 10
-6
-3
-3
13.59 - 10
10
1.359 - 10
703.1
51.715
70.31 - 10
J
W - h
kW - h
W - s
0,277 777 8
0,277 777 8
3
6
- 10
- 10
1
10
-3
3
10
3
1
-3
1,63 - 10
1,163 - 10
1,163
1,163 - 10
3
2,724 069 4
2,724 069 4
-3
-6
- 10
- 10
0,293 071 1
0,293 071 1
3
- 10
-3
FACTEURS DE CONVERSION ET TABLEAUX
°F -32
Température: °C=
; °F= (1,8 x °C) + 32
1,8
Mesure de pression: mm = 0,03937 in in = 25,4 mm
cm = 0,3937 in
-2
m
m = 39,37 in
f
force
p=
= Pression =
m
2
surface
Suivant le système international, la mesure de pression s'expri-
me en Pascal: 1Pa=1N/m
2
=1 Newton/m
Les unités plus connues pour la mesure de pression sont:
Pascal = Pa (N/m
2
), kPa = 10
bar
= bar, mbar = bar x 10
mètres de colonne d'eau 4°C = mH
millimètres de colonne de mercure 0°C = mmHg, Torr
-3
atmosphère théorique
atmosphère physique
pouce de colonne d'eau à 4°C
pouce de colonne de mercure à 0°C
micro de colonne de mercure à 0°C
pound par square inch
1 bar = 100.000 Pa
1 bar = 14,5038307 psi
1 bar = 0,986923 atm
1 bar = 755,7299444 mmHg
1 bar = 10,19716213 mH
O
2
psi = in di H
O x (3,6127 x 10
2
psi = mm di H
O x (1,4223 x 10
2
psi = cm di H
O x (14,223 x 10
2
psi = in di Hg x 0,49118
psi = mm di Hg x (1,9338 x 10
psi = kg/cm
2
x 14,223
psi = bar x 14,503
psi = mbar x (1,4503 x 10
-2
)
psi = Pa x (1,4503 x 10
-4
)
psi = kPa x (1,4503 x 10
-1
)
1 atm
= 1.013 x 10
O x 10
-3
1 bar
= 1000 x 10
1 dyne/cm
2
= 1000 x 10
1 pollice di Hg (0°C)
= 3.386 x 10
1 pollice di H
O (4°C) = 2491 x 10
2
1 kg/m
2
= 9.806 Pa
1 pound/inch
2
(psi)
= 6.895 x 10
1 pound/foot
= 4.788 x 10
2
1 Torr (mm di Hg 0°C) = 1.333 x 10
inch
inch
atm
H
O
2
HG
2
-6
-6
-3
9.869 - 10
4.016 - 10
2.953 - 10
-3
-3
9.869 - 10
4.016
0.2953
9.869
4016
295.3
0.9869
401.6
29.53
-3
-3
0.9869 - 10
0.4016
29.53 - 10
-3
96.78 - 10
39.37
2.896
-6
96.78 - 10
0.03937
2.896 - 10
-3
-3
1.316 - 10
0.5351
3.937 - 10
0.9678
393.7
28.96
1
406.7
29.92
-3
-3
2.458 - 10
1
7.355 - 10
-6
-2
3.342 - 10
13.60
1
-6
-6
-3
1.316 - 10
0.5351 - 10
3.937 - 10
-3
-3
68.04 - 10
27.68
2.036
cal
kcal
0,238 845 9
0,238 845 9
-3
- 10
859,845 23
859,845 23
859,845 23
859,845 23
- 10
3
-6
-3
1
10
-3
-3
10
1
2,342 278 1
2,342 278 1
0,251 995 8
0,251 995 8
- 10
-3
in = 2,54 cm
in = 2,54x10
-2
m
2
.
3
Pa, MPa = 10
6
Pa
-3
O, mmH
O = mH
O x 10
-3
2
2
2
= at (kp/cm
2
)
= atm
= inc H
O
2
= inc Hg
= µm Hg
= psi
Pa
= 10
-5
x bar
psi
= 0,0689473023 x bar
atm
= 1,01325 x bar
mmHg = 0,001323224 x bar
mH
O = 0,0980665 x bar
2
-2
)
in di H
O = psi x 27,68
2
-3
)
mm di H
O = psi x 703,1
2
-3
)
cm di H
O = psi x 70,3
2
in di Hg = psi x 2,036
-2
)
mm di Hg = psi x 51,71
kg/cm
2
= psi x 0,0703
bar = psi x 0,0689
mbar = psi x 68,95
Pa = psi x 6895
kPa = psi x 6,895
5
Pa
5
Pa
1
Pa
3
Pa
2
Pa
3
1
2
Mi-
PSI
2
crons
Ipf / in
-4
-6
7.501
45.05 - 10
7501
0.14505
6
7.501 - 10
145.05
3
750.1 - 10
14.505
-3
-3
750.1
14.505 - 10
3
73.56 - 10
1.4224
-3
-3
73.56
1.4224 - 10
-2
-3
10
0.01934
3
735.6 - 10
14.224
3
760 - 10
14.68
-2
-3
-3
1.868 - 10
36.126 - 10
3
25.4 - 10
0.4912
-5
-5
1
1.934 - 10
51.715
1
kp - m
BTU
0,101 971 6
0,947 817 1
-3
- 10
0,367 097 8
3,412 141 6
3
- 10
0,367 097 8
3,412 141 6
- 10
3
- 10
3
0,426 934 8
3,968 320 7
-3
- 10
0,426 934 8
3,968 320 7
3
- 10
1
9,294 910 7
3
- 10
0,251 995 8
1
- 10
3
Werbung
