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Altimeters use pressure sensors to calibrate altitude. An electronic altimeter uses pressure sensors in a small housing that has a computer chip and display screen. There are many electronic altimeters on the market, some on wristwatches and some separate units. Using the altimeter requires prepping and calibrating it to a known altitude. The device needs to be re-calibrated after flying as the pressure from airplanes causes them to misinterpret the data.
If you're lost and wandering in the mountain wilderness, you'll be thankful you have an altimeter in your pack. Used with a good topographic map, this handy gauge can make the difference between quickly finding your trail again or spending some time---perhaps hours or days---not knowing exactly where you are. An altimeter measures your elevation above sea level. The instrument is small, light, and easy to use; some versions are built directly into a watch, allowing you the use of an altimeter without adding a separate piece of equipment.
Highgear's Terrapod is a handheld electronic altimeter/barometer/compass combination unit for outdoor uses such as hiking, camping and hunting. The Swiss barometric pressure sensor is capable of determining altitudes in a range from -1,312 feet below sea level to +29,520 feet. Barometric data also generates weather forecast displays. The Terrapod is water-resistant to a depth of 33 feet and is powered by two CR 2032 lithium batteries. To ensure correct calibration of altitude to current barometric pressure, the Terrapod's altimeter can be manually set to a known altitude.
Altimeters are essential instruments for flying planes. A sticking altimeter can be dangerous for the pilot and passengers. Sticking altimeters are generally caused by a malfunctioning vibrator -- the mechanism which prevents the friction in the gears from affecting altitude readings -- or dirt and debris in the altimeter system preventing the internal mechanisms from producing an accurate reading. Repairing a sticky altimeter involves locating the internal vibrator, if your altimeter has one, and cleaning the debris from the inside of the instrument.
An altimeter measures the altitude of an aircraft, or the distance from the bottom of a plane to the ground. Barometric altimeters measure the distance of the altimeter from sea level and often are used by pilots and mountain climbers. These altimeters read the air pressure from their location and then coordinate that pressure to a specific altitude. Whether you are using a handheld altimeter with a sensor for model aircraft flying or you are onboard a plane, getting your specific altitude is easily accomplished.
In aviation, an aircraft's altimeter tells the pilot her altitude based on the air pressure sensed at the aircraft's current location. Pilots generally calibrate their altimeters to tell them their altitude above sea level by setting known or calculated sea level pressure in the altimeter as the reference point. However, there are times when a pilot instead wants to know her height above the ground at a specific airport. QFE, or "Queen's Field Elevation," is the traditional term for this type of altimeter setting.
Fliers, skydivers and mountain climbers make use of the altimeter to track their height above sea level. The atmosphere, a layer of air above the earth, exerts pressure on everything on the planet. As we climb or fly above the ground, the atmosphere thins and the air pressure is reduced. A barometer measures air pressure in a fixed location, indicating the existence of weather patterns in that one area. Since the altimeter moves with the climber or pilot, its readings are altitude rather than weather dependent. Building and calibrating an altimeter is a fun and easy project you can do…
An altimeter is a sensitive instrument that measures the distance off the ground something is. Altimeters are used in navigation by airplanes and other aircraft when trying to establish position. You need to adjust your altimeter during every flight for an accurate reading. The reading is affected by the pressure of the atmosphere around you, so you will need to adjust this measure when correcting your altimeter. You will need to be precise when adjusting your altimeter because a slight discrepancy will alter it and give out false readings.
Altitude can be measured with an instrument known as an altimeter. This is an important instrument that can be handheld--for use by mountain climbers for example--or included on an instrument panel, such as on an airplane. Altitude has a direct effect on barometric pressure, which is what an altimeter measures, as well as the amount of oxygen in the air. You can make your own homemade altimeter with simple items to demonstrate how the instrument works.
An altimeter is an aneroid barometer that translates change in pressure into altitude. Changes in barometric pressure associated with changes in weather cause changes in altimeter readings. Altimeters need to be adjusted to compensate for these pressure changes. Altimeters use barometric pressure readings adjusted to sea level. Entering the sea level barometric pressure produces the current altitude readout on the instrument. In general, media reports of barometric pressure have already been corrected to sea level.
Cartographers, airplane pilots and many others need to know their elevation at any given point. An altimeter is an instrument that measures atmospheric pressure in order to know elevation or altitude. Radar and satellites are often used as well.
Analog altimeters are used to indicate an aircraft's altitude. They are simply precision aneroid barometers calibrated to indicate altitude above mean sea level by measuring changes in atmospheric or barometric pressure. Atmospheric pressure can vary along an aircraft's route, so it is necessary to periodically adjust or set the altimeter. The Federal Aviation Administration requires an adjustment every 100 nautical miles of flight and before takeoff and landing. The altimeter is set by a knob on the front. Twisting the knob right or left changes the barometric pressure reading in the Kollsman window and simultaneously moves the altitude indicator hands.…
Inside of an altimeter lies the same equipment found in barometers. They measure the amount of static air pressure exerted on the altimeter to determine the height above sea level. Static air pressure measures the amount of pressure exerted by the atmosphere at a particular altitude. Essentially, it can be thought of as the "weight" of the air above a person. The higher one goes, the lower the air pressure. Altimeters have a set standard pressure for sea level. In the United States, that's 29.92 inches of mercury. This refers to the change in mercury levels used by barometers to…
An altimeter is used to measure the altitude of an object. Altimeters are used mainly in aircraft but have a variety of other uses, such as in the wristwatch altimeter used by mountain climbers and sky divers, in spacecraft and in bombs and missiles as part of the detonator.
Altimeters are important devices for all pilots. They tell the pilot the elevation at which the pilot is flying, which is crucial considering that differences in elevation and air pressure have an impact on oxygen and fuel efficiency. Setting an altimeter takes only a few seconds and requires very little information.
The first operationally effective barometric altimeter was designed by Paul Kollsman and first tested in 1929. It was designed and is still primarily used as an aircraft guidance instrument. Kollsman, who immigrated to the United States from Germany, was determined to find a way for airplanes to fly at night or in low visibility. The barometric altimeter makes that possible.
In order to calibrate the altitude of an object you need an altimeter. Calibration is the process of determining the specific adjustment needed to get an accurate measurement. A calibrated altimeter is used to aid in the flight of planes and the distance above sea level. Altimetry is the measurement of altitude and bathymetry is the measurement of depth underwater.
Some things are critical for a pilot to know. How much fuel you have for one thing and how close you are to the ground. A fuel gauge is pretty strait forward to read and interpret, much the same way as one found in a car. If the needle is to the right, you have plenty of gas, on the left and it's time to do something about it. An altimeter works pretty much the same way.
