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Gauge Pressure Formula

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Gauge Pressure is the amount by which the pressure measured in a fluid exceeds that of the atmosphere. Check FAQs
Pg=Pabs-Patm
Pg - Gauge Pressure?Pabs - Absolute Pressure?Patm - Atmospheric Pressure?

Gauge Pressure Example

With values
With units
Only example

Here is how the Gauge Pressure equation looks like with Values.

Here is how the Gauge Pressure equation looks like with Units.

Here is how the Gauge Pressure equation looks like.

-1325Edit=100000Edit-101325Edit
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HomeIcon Home » Category Engineering » Category Chemical Engineering » Category Process Calculations » fx Gauge Pressure

Gauge Pressure Solution

Follow our step by step solution on how to calculate Gauge Pressure?

FIRST Step Consider the formula
Pg=Pabs-Patm
Next Step Substitute values of Variables
∴ Pg=100000Pa-101325Pa
Next Step Prepare to Evaluate
∴ Pg=100000-101325
LAST Step Evaluate
∴Pg=-1325Pa

Gauge Pressure Formula Elements

Variables
Gauge Pressure
Gauge Pressure is the amount by which the pressure measured in a fluid exceeds that of the atmosphere.
Symbol: Pg
Measurement: PressureUnit: Pa
Note: Value can be positive or negative.
Formulas to find Gauge PressureOpen Variable
Absolute Pressure
Absolute Pressure is labeled when any pressure is detected above the absolute zero of pressure.
Symbol: Pabs
Measurement: PressureUnit: Pa
Note: Value can be positive or negative.
Formulas to find Absolute PressureOpen Variable
Atmospheric Pressure
Atmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth.
Symbol: Patm
Measurement: PressureUnit: Pa
Note: Value can be positive or negative.
Formulas to find Atmospheric PressureOpen Variable

Other formulas in Basic Formulas category

​Go Change in Number of Moles due to Reaction
Δn=(vi⋅ξReaction)
​Go Extent of Reaction given Change in Number of Moles
ξReaction=(Δnvi)
​Go Extent of Reaction given Number of Moles Initially and at Equilibrium
ξReaction=(nEquilibrium-ninitialvi)
​Go Number of Moles Initially given Extent of Reaction
ninitial=(nEquilibrium-(vi⋅ξReaction))

How to Evaluate Gauge Pressure?

Gauge Pressure evaluator uses Gauge Pressure = Absolute Pressure-Atmospheric Pressure to evaluate the Gauge Pressure, The Gauge Pressure formula is defined as the additional pressure in any system relative to the atmospheric pressure, and is equal to the difference between the absolute and atmospheric pressure while also being zero-referenced against the ambient air pressure. Gauge Pressure is denoted by Pg symbol.

How to evaluate Gauge Pressure using this online evaluator? To use this online evaluator for Gauge Pressure, enter Absolute Pressure (Pabs) & Atmospheric Pressure (Patm) and hit the calculate button.

FAQs on Gauge Pressure

What is the formula to find Gauge Pressure?
The formula of Gauge Pressure is expressed as Gauge Pressure = Absolute Pressure-Atmospheric Pressure. Here is an example- -1325 = 100000-101325.
How to calculate Gauge Pressure?
With Absolute Pressure (Pabs) & Atmospheric Pressure (Patm) we can find Gauge Pressure using the formula - Gauge Pressure = Absolute Pressure-Atmospheric Pressure.
Can the Gauge Pressure be negative?
Yes, the Gauge Pressure, measured in Pressure can be negative.
Which unit is used to measure Gauge Pressure?
Gauge Pressure is usually measured using the Pascal[Pa] for Pressure. Kilopascal[Pa], Bar[Pa], Pound Per Square Inch[Pa] are the few other units in which Gauge Pressure can be measured.
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