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They are the same, but MAF sensors-measures how much air an engine is consuming, it does this by heating a wire element to a current temp. As the air drawn into the engine( normally aspirated-vacuum) the wire is cooled off ( the higher the flow, cooler the air= more of a temp. drop) and by how much current it takes to mantain the temperature, the computer knows how much air the engine is taking in, and can calculate the correct amount of fuel is required.
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What is the relation between pressure in atmosphere and pressure?
Atmospheric pressure is the surrounding pressure around us. We live in the atmosphere and treat the atmospheric pressure as the base pressure. A pressure gauge would read 0 at atmospheric pressure. When we define the pressure in scientific way of absolute pressure, we need to add up an atmospheric pressure to the measured pressure.
How does a barometer looks?
its a circle with numbers in order to read/measure the atmospheric pressure a circle with numbers to measure the atmospheric pressure
What is a device that displays atmospheric pressure?
A barometer.Barometric pressure is usually read and rated in millibars of atmospheric pressure. A standard day at sea level, would be 29.9 on the barometric scale. That is, neither a high or low pressure in the area and generally sunny.
What causes Back pressure on cooling system?
Condenser Backpressure is the difference between the Atmospheric Pressure and the Vacuum Reading of the Condenser, that is: Backpressure = Atm. Pressure - Condenser Vacuum Pressure Reading Usually, the condenser vacuum pressure is read by a manometer installed at the condenser. The atmospheric pressure is read using a barometer
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 find gage pressure?
Gage pressure is the difference between atmospheric pressure and absolute pressure. If you fill your tire to 35 psi as read on a tire gage, this is the gage pressure. The absolute pressure inside the tire is the pressure of the atmosphere (14.7 psi normally at sea level) plus the gage 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
Difference between bar and barg?
The 'g' added on to bar means 'gauge', as opposed to bara, meaning 'absolute'. The 'zero' of a normal gauge is normally set at atmospheric pressure (things like tire pressure gauges, water gauges etc.) These gauges will read as "10 bar" but really mean that the absolute pressure is 10 bar + atmospheric pressure (~1.01325 bar). Some gauges however are absolute gauges. These might include weather gauges, or gauges on closed processes. bara = barg + atmospheric pressure
How do you check knock sensor on a 94 Nissan Pathfinder LE?
The detonation sensor ( knock sensor ) really cannot be checked by the home mechanic it is either good or bad. It consists of a pressure sensing piezoelectric element that converts pressure differences into electrical signals that can be read by the computer.
350 has new spider but still wont stop over loading on fuel?
Do you have a leaking fuel pressure regulator? That would do it. Does the O2 sensor signal show consistently rich? If not, you might have a bad sensor. Is fuel pressure within the acceptable range? Does the ECT sensor signal read true? How about the MAP sensor and MAF sensor if so equipped?
What is the atmospheric pressure if the temperature is at 0c the velocity of sound is 331.0ms density of air is 1.295kg and what formula is used?
Sorry, the atmospheric pressure has really nothing to do with the speed of sound at 0c, but he temperature is very important Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure". The air pressure and the air density are proportional to each other at the same temperature.
What does PSIG indicate?
Psig (pound-force per square inch gauge) is a unit of pressure relative to atmospheric pressure at sea level. By contrast, psia measures pressure relative to a vacuum (such as that in space). Most pressure gauges, such as tire gauges, are calibrated to read zero at sea level, because most applications require the difference of pressure. At sea level, Earth's atmosphere actually exerts a pressure of 14.695948804 psi. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.695948804 psi. Thus a reading of 30 psig on a tire gauge, represents an absolute pressure of 44.695948804 psi.
