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Why does an air gauge that is connected to water read 3x the pressure that the water gauge read?
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Why 0 psia is to measured?
PSIA is Pounds per Square Inch Absolute, as opposed to PSIG which is PSI Gauge. PSIA is absolute pressure. For example, normal atmospheric pressure is about 14.7 PSIA, so a PSIA device connected to atmosphere would read 14.7. PSIG is relative pressure, so if system pressure is 15.7 PSIA, and atmospheric pressure is 14.7 PSIA, then PSIG would be 1.0
What is the difference between gauge pressure and absolute pressure?
Absolute pressure = gauge pressure + atmospheric pressureWhen using a pressure gauge, like when measuring the pressure of the air in a tire, the gauge is actually reading the difference between the atmospheric pressure and the atmospheric pressure. So if the gauge measures 30 psi, and taking atmospheric pressure at about 14.7 psi, the absolute pressure in the tire is actually about 44.7 psi. If the tire is flat, then the gauge will read zero psi, but there is not a vacuum - there is still some air present in the tire, and the absolute pressure of this air is the same as the atmospheric pressure (about 14.7 psi).See related link: Guide to the Measurement of Pressure and Vacuum.
What does P1 T1 and V1 represent?
The numbers (1 and 2) are subscripts such as p1v1. The subscript numbers distiquish them from others of the same letter that are going to be used in the same equation. In this case there are probably 2 Pressure variables and 2 Volume variables. Since you want to use p and v for pressure and volume but there are pressures and volumes at let's say different gauges in the system then we have to distiguish the two. p1 = pressure read from gauge one and v2 is volume read from gauge 2. This, among others, is part of the energy equation for thermodynamics p1v1 = p2v2. The P is for pressure and the V is for Volume. _______________________________________________________________________ My answer This occurs to Boyle's Law.
How do you fix the heat in a 94 Chevy S-10?
add water to the radiator. believe that. if there is no water flowing through the engine, your heater will only blow cold air. if there is no water flowing through the engine and your heater is only blowing cold air, and not HEATING, your heater core is probably going out or will be soon. most people believe that if you have no water in the engine then your temperature gauge will run hot and you will know that you are overheating the engine. WRONG! your temp gauge only measures WATER temp. But if there is no water to measure, there is no temperature rise showing on the dashboard gauge. if you have NO WATER in the engine you can seriously overheat your engine and not know it because the gauge is not getting any hotter than usual (sometimes your gauge will even read cooler than usual).
What will the mercury thermometer show when it is kept in ice?
The question must be asked carefully. If the thermometer is in water ice and there is no liquid water, and there is one atmosphere of pressure, the thermometer can read anything from the freezing point of water and lower, depending on the range of the thermometer. If the thermometer is in a stable mix of water and ice, it will read the freezing point of water.
What formula to measure pressure in a water tank?
Forget formula - put a gauge on it and read it.
What should your home water pressure gauge read?
8 PSI min - 80 PSI max
What measures water pressure?
A water pressure gauge. There is one mounted on every well pressure tank, and most well techs and some plumbers carry portable ones that can be screwed onto a garden faucet to read home pressure
Why do I have low water pressure in my hobart dishwasher?
The wash pressure is fine, but the rinse pressure is very weak. The gauge will read around 15-20 psi but the rinse cycle is weak.
How do you read the Oil pressure gauge on a 1989 mercury cougar?
with your eyes
How is vacuum pressure read?
You need a vacuum gauge and it is reed in inches.
How do you read a tire pressure gauge?
The number is the pounds per square inch
Difference between pressure gauge and manometer?
A manometer is a pressure gauge, "Manometer" reads extremely low pressures that are very close to atmospheric pressures, "pressure gauges" read much larger pressures.
How do you read a car tire gauge, and how do you know the right tire pressure?
The correct tire pressure is stamped on the tire,and is also located in your owners manual.You can purchase a digital tire pressure gauge to take the guess work out.
Why does my oil pressure gauge read low?
You will need to remove your oil pressure sending unit and install a mechanical gauge to get a true reading. You need to start out cold and write down the pressure reading and also once it warms up to operating temperature. If the pressure gauge is not the same as the mechanical one you have a bad pressure switch.
How do check if you have the right tire pressure in a tire?
Read the vehicle data plate for tire pressures, and use a tire gauge to see if the tires are at that pressure.
Why 0 psia is to measured?
PSIA is Pounds per Square Inch Absolute, as opposed to PSIG which is PSI Gauge. PSIA is absolute pressure. For example, normal atmospheric pressure is about 14.7 PSIA, so a PSIA device connected to atmosphere would read 14.7. PSIG is relative pressure, so if system pressure is 15.7 PSIA, and atmospheric pressure is 14.7 PSIA, then PSIG would be 1.0
