# Pounds-force-per-square-inch

From AutomationWiki

Pounds-force-per-square-inch is an engineering unit that falls under the pressure group, and is commonly used by automation professionals.

## Contents

## Definitions[edit]

- The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.
^{[1]} - Pound-force per square inch is a non-SI unit of pressure based on avoirdupois units. In casual English language use it is rendered as "pounds per square inch", abbreviated to psi with little distinction between "mass" and "force".
^{[2]}

## Conversion to SI and other common units[edit]

1 Pound force per square inch (psi) equals to:

0.0703071 |
Atmosphere (metric) |

0.0680458 |
Atmosphere (standard) |

0.0689474 |
Bar |

68947.4482549 |
Barad |

68947.4482549 |
Barye |

5.1714861 |
Centimeter of mercury (0 °C) |

70.3084709 |
Centimeter of water (4 °C) |

68947.4482549 |
Dyne/square centimeter |

2.3067196 |
Foot of water (4 °C) |

0.0000069 |
Gigapascal |

68.9474483 |
Hectopascal |

2.0360181 |
Inch of mercury (0 °C) |

2.0415684 |
Inch of mercury (15.56 °C) |

27.7069458 |
Inch of water (15.56 °C) |

27.6806078 |
Inch of water (4 °C) |

0.0703071 |
Kilogram force/centimeter^{2} |

7.0307092 |
Kilogram force/decimeter^{2} |

703.0709193 |
Kilogram force/meter^{2} |

0.0007031 |
Kilogram force/millimeter^{2} |

6.8947448 |
Kilopascal |

0.001 |
Kilopound force/square inch |

0.0068947 |
Megapascal |

0.7037535 |
Meter of water (15.56 °C) |

0.7030847 |
Meter of water (4 °C) |

68947.4482549 |
Microbar (barye, barrie) |

51714.860933 |
Micron of mercury (millitorr) |

68.9474483 |
Millibar |

51.7148391 |
Millimeter of mercury (0 °C) |

703.7534991 |
Millimeter of water (15.56 °C) |

703.0847088 |
Millimeter of water (4 °C) |

51714.860933 |
Millitorr |

6894.7448255 |
Newton/square meter |

221670.872461 |
Ounce force (avdp)/square inch |

6894.7448255 |
Pascal |

143.9995036 |
Pound force/foot^{2} |

1 |
Pound force/inch^{2} |

4633.0547856 |
Poundal/square foot |

32.173982 |
Poundal/square inch |

0.0680458 |
Standard atmosphere |

0.0642855 |
Ton (long)/foot^{2} |

0.0004464 |
Ton (long)/inch^{2} |

0.0000703 |
Ton (metric)/centimeter^{2} |

0.0719998 |
Ton (short)/foot^{2} |

0.0005 |
Ton (short)/inch^{2} |

0.0004464 |
Ton/inch^{2} |

51.7148609 |
Torr |

## Communication Protocol Support[edit]

This engineering unit is supported by the following communication protocols:

1. BACnet

- 2008 specification.
- Enumeration=56

2. CIP (includes Ethernet/IP)

- Enumeration=0x1300
- Base Unit=6.894757 • 10
^{3}• Pa