I can vouch for this from firsthand experience. It is also very good to know both units of pressure measurement.
#3 BAR TO PSI HOW TO#
This is why it is so important to know what these terms mean, and how to read your pressure gauge underwater. It will tell us using pressure measurements of bar or PSI. This means we need to know how much is in our tank at all times so we can plan our dive and decide when to go up safely.Ī submersible pressure gauge (SPG) will tell us how much gas/pressure is in our tank. What is Bar or PSI measurements used for?Īs scuba divers, we are breathing from our SCUBA unit, and relying on the gas inside our tanks/cylinders. These countries use what is called PSI or pounds per square inch (lb./in 2) for measuring pressure.Īs you can see from above, what system you learn to dive with will very much depend on where you learn to dive (or where your instructor is from!). From these countries, the USA unsurprisingly has the largest diving community. Imperial measurements are now only used by The United States of America, Myanmar and Liberia. Read More: Scuba Diving Tips for Beginners & Open Water Divers What is PSI Pressure? (Imperial)Īs well as the Metric system we have the Imperial system. In fact, only three countries in the world don’t use this system (more on those later) so chances are you will be learning to use bar when you first start out scuba diving. This is the most commonly used system around the world in scuba diving. Pressure is the measure of force exerted on an object and bar is the measure of how much force is being exerted.īar is used by the metric system for measuring pressure Kilograms per square centimeter (Kg/cm 2). PSI pressure, what they are, the differences between them, and how it affects us while diving.įirst up is a bit of information on the two most commonly used ways of measuring pressure.
#3 BAR TO PSI FULL#
Symbols, abbreviations, or full names for units of length,Īrea, mass, pressure, and other types.What is Bar Pressure & PSI Pressure in Scuba Diving? Photo: Kris Mikael Krister / UnsplashĪs a scuba diver, you will certainly come across the terms ‘Bar’ and/or ‘PSI.’ But what exactly do they mean? Well, as a scuba instructor, I hear this question a lot, so here we are going to look at what is Bar pressure vs. You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.Ĭonversion calculator for all types of measurement units. Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Its official symbol is "bar" the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.
The word bar is of Greek origin, báros meaning weight. The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). Psia to bar, or enter any two units below: Enter two units to convert From:
You can do the reverse unit conversion from
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