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20.4 what? !! The guage pressure measures the pressure within the air tank. The air tank has a given volume with an amount of gas squeezed into it. That pressure only reduces as you let the gas out (unless you put the tank under enough pressure so that IT reduces in size, compressing the gas within even further). Do more training as your question is out of context and shows a lack of understanding for the basics of the subject.
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∙ 15y ago
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What is the purpose of a depth gauge?
The purpose of a depth gauge is to measure the depth of water. It is used by scuba divers to make sure they don't go too deep because the deeper they go the more pressure the water is.
What is gauge pressure at a depth of 100 m in water?
About 160 psi or 11 atm
Does absolute pressure in a liquid of constant density double when the depth is doubled?
No, the absolute pressure in a liquid of constant density would not double in this situation. This is because the atmospheric pressure is an independent variable, so it will keep the absolute pressure from doubling.
What is the pressure of water at a depth of 10000 ft?
Roughly 4.3 psig or 29 kPag on Earth near sea level ("g" meaning gauge pressure, additional to atmospheric pressure).
What is the gear that divers use?
Mask, fins, snorkel, knife, tank, bcd (buoyancy control device), wetsuit, weight belt, regulator, pressure gauge, depth gauge, etc.
What is the difference between normal pressure gauge and differential pressure gauge?
A pressure gauge indicates actual pressure and a differential pressure gauge indicates the difference in pressure.
Why pressure gauge is called a gauge not a meter?
Because Pressure gauge measures the the differenceof pressure so it is called pressure gauge not meter.
What is a depth gauge?
A device to measure the tire's thread depth.
How do depth and temperature affect pressure?
Depth and temperature affect pressure by increasing the pressure as the depth increases. As depth increases, temperature often falls.
What is a depth micrometer used for?
A "depth gauge micrometer" is used by engineers. A depth gauge micrometer is a precision instrument used to measure various depths of different items.
Definition of a compound gauge?
A compound gauge is a pressure gauge that displays both negative and positive gauge pressure measurements. Gauge pressure is a measurement of pressure relative to ambient pressure. For example, if ambient pressure was 14.7 PSI and you were to measure absolute vaccum using a compound gauge, the gauge would indicate -14.7 PSI.
What is the relationship between liquid and pressure and depth of a liquid?
The Pressure and depth of a liquid are related by the equation P= dgh., where d is the density, g is the acceleration due to gravity and h is the depth. This value gives us the gauge pressure that is the excess above the atmospheric pressure.This is explainable with Archimedes principal giving the pressure at the base of the column with the formula Sg x H x G
