Endress+Hauser ria45 - Page 55

RIA45 Appendix
Endress+Hauser 55
• 1 bar = 0,1 N/mm² = 10
5
N/m² = 10
5
Pa
• 1 mbar = 1 hPa = 100 Pa
Conversion factors for various pressure engineering units
Pascal Bar Technical
Atmosphere
Physical
Atmosphere
Torr Pounds per
square inch
[Pa] [bar] [at] [atm] [torr] [psi]
= 1 N/m² = 1 Mdyn/cm² = 1 kp/cm² = 1 pSTP = 1 mmHg = 1 lbf/in²
1 Pa = 1 1.000 · 10
-4
1.0197 · 10
-5
9.8692 · 10
-6
7.5006 · 10
-3
1.4504 · 10
-4
1 bar = 1.000 · 10
5
1 1.0197 · 10
0
9.8692 · 10
-1
7.5006 · 10
2
1.4504 · 10
1
1 mbar = 1.000 · 10
2
1.000 · 10
-3
1.0197 · 10
3
9.8692 · 10
-4
7.5006 · 10
-1
1.4504 · 10
-2
1 at = 9.8067 · 10
4
9.8067 · 10
-1
1 9.6784 · 10
-1
7.3556 · 10
2
1.4223 · 10
1
1 atm = 1.0133 · 10
5
1.0133 · 10
0
1.0332 · 10
0
1 7.6000 · 10
2
1.4696 · 10
1
1 torr = 1.3332 · 10
2
1.3332 · 1
-3
1.3595 · 10
-3
1.3158 · 10
-3
1 1.9337 · 10
-2
1 psi = 6.8948 · 10
3
6.8948 · 1
-3
Density:
The density has to be taken from the specifications of the medium that the tank contains.
In the given table standard approximate values that can help for a first orientation are
listed
Medium Density in [kg/m³]
Water (at 3.98 °C (39.164 °F)) 999.975
Mercury 13 595
Bromine 3 119
Sulfuric acid 1 834
Nitric acid 1 512
Glycerin 1 260
Nitrobenzene 1 220
Deuterium oxide 1 105
Acetic Acid 1 049
Milk 1 030
Seawater 1 025
Aniline 1 022
Olive oil 910
Benzene 879
Toluene 872
Spirits of turpentine 855
Spirit 830
Diesel fuel 830
Paraffin 800
Methanol 790
Ethyl alcohol 789
Automotive gas (standardized, average value) 750
Acetone 721