Appendix m pressure conversion chart, Pressure conversion chart – Vaisala PTB220 User Manual
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PPENDIX
M ________________________________________________ P
RESSURE CONVERSION CHART
V
AISALA
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APPENDIX M PRESSURE CONVERSION CHART
Pressure conversion chart
Multiplication factors
Note: conversions for mmHg and inHg are defined at 0°C temperature and for mmH2O and inH2O at 4°C temperature.
psia =
FROM
psi absolute
hPa
Pa
mmHg
inHg
mmH2O
inH2O
atm
at
bar
psi
mbar
N/m2
torr
TO
hPa
mbar
1
0.01
1.333224
33.86388
0.09806650
2.490889
1013.25
980.665
1000
68.94757
Pa
Nm2
100
1
133.3224
3386.388
9.806650
249.0889
101325
98066.5
100000
6894.757
mmHg
torr
0.7500617
0.0075006
1
25.40000
0.07355592
1.8683
760
735.559
750.0617
51.71493
inHg
0.02952999 0.00029530 0.03937008
1
0.002895903
0.073556
29.921
28.959
29.52999
2.036021
mmH2O
10.19716
0.1019716
13.59510
345.3155
1
25.40000
10332.3
10000
10197.16
703.0696
inH2O
0.40147
0.0040147
0.53525
13.596
0.039372
1
406.79
393.71
401.463
27.6799
atm
0.00098692 0.000009869 0.00131579
0.033422
0.000096788 0.0024583
1
0.967841
0.98692
0.068046
at
0.0010197
0.00001020
0.0013595
0.034532
0.0001
0.0025399
1.03323
1
1.01972
0.070307
bar
0.001
0.00001
0.001333224 0.03386388 0.00009807
0.0024909
1.01325
0.980665
1
0.06894757
psi
0.01450377 0.00014504 0.01933678
0.4911541 0.001422334
0.036127
14.6962
14.2233
14.50377
1
Example
1013.25 hPa/mbar = 1013.25 x 0.02952999 inHg = 29.9213 inHg