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Topic: Pitot

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	Flow Meters \| Make the most of averaging Pitot tubes \| Chemical Processing
		Often, the multi-port averaging Pitot tube is an appropriate and economic choice as the primary element for measuring liquids, gases or steam.
		The Pitot tube is a “square root device,” meaning the square root of the DP is proportional to the flow rate.
		Among the reasons for this are percent blockage of the probe in the pipe and shedding vortices that cause a suctioning effect at the downstream static pressure ports, producing a larger measured DP than the theoretically predicted value.
	www.chemicalprocessing.com /articles/2005/505.html (1013 words)

	Pitot tube - Wikipedia, the free encyclopedia
		A Pitot (pronounced pē-tó) tube is a measuring instrument used to measure fluid flow velocity, and more specifically, used to determine airspeed on aircraft.
		The Pitot tube is named after its inventor, Henri Pitot, and was modified to its modern form by Henry Darcy.
		Pitot tubes on aircraft commonly have heating elements to prevent the tube from becoming clogged with ice.
	en.wikipedia.org /wiki/Pitot (356 words)

	Henri Pitot - Wikipedia, the free encyclopedia
		Henri Pitot (May 3, 1695 – December 27, 1771) was a French hydraulic engineer and the inventor of the Pitot tube, which measures flow velocity.
		Beginning his career as a mathematician and astronomer, Pitot won election to the Academy of Sciences in 1724.
		He became interested in the problem of flow of water in rivers and canals and discovered that much contemporary theory was erroneous— for example, the idea that the velocity of flowing water increases with depth.
	en.wikipedia.org /wiki/Henri_Pitot (209 words)

	Pitot Tube
		Pitot tubes are used on aircraft as speedometers.
		The pitot tube is mounted on the aircraft so that the center tube is always pointed in the direction of travel and the outside holes are perpendicular to the center tube.
		On some airplanes the pitot tube is put on a longer boom sticking out of the nose of the plane or the wing.
	www.grc.nasa.gov /WWW/K-12/airplane/pitot.html (474 words)

	Thermochem Pitot Tube
		The measurement principle is similar to that of an annubar, however, the pitot tube can be easily inserted and removed through a 1 inch valve on the steam or brine flowline.
		The pitot tube probe assembly is shown in Diagram 1.
		This pitot tube is referred to an S-type due to the shape of the tip where the velocity pressure tube bends into the flowstream and the static pressure tube bends downstream.
	www.thermochem.com /tcipitot.html (449 words)

	USING A PITOT STATIC TUBE FOR VELOCITY AND FLOW RATE MEASUREMENT
		The Pitot Static tube measures the total pressure (or impact pressure) at the nose of the Pitot tube and the static pressure of the gas stream at side ports.
		When selecting a Pitot Static tube to be used in conjunction with the FKT Series (or any manometer for that matter), it is necessary to select a tube with a constant close to unity, if errors in velocity are to be avoided.
		Ensure that the Pitot Static tube is aligned with the axis of the duct using the alignment guide on the tube as a reference.
	www.flowmeterdirectory.com /flowmeter_artc/flowmeter_artc_02111201.html (1444 words)

	PITOT-STATIC ANEMOMETER (Site not responding. Last check: 2007-11-01)
		Due to the extreme weather conditions experienced at the summit of Mount Washington, both the pitot-static probe and mounting assembly are heated to prevent the formation of ice on the probe assembly.
		The pitot probe measures the total pressure (static pressure + dynamic pressure) caused by the air flow coming to a halt at the opening of the pitot probe (the pressure builds up at the tip of the pitot probe because there is no air flow through the pitot probe).
		Generally the pitot-static tube is directed into the wind by the wind vane which is a part of the assembly, but since the angle of the probe is fixed to the horizon, air flowing up across the nose of the probe may not provide an accurate reading of wind speed.
	www.ruhr-uni-bochum.de /climusa/projectmtw/pitot.htm (1135 words)

	Pitot tubes
		The air velocity measured by pitot tubes is calculated by the dynamic and the static pressure.
		Pitot tubes are suitable for applications with rough ambient conditions.
		Pitot tubes are connected via silicone hoses to a pressure cell and then to ALMEMO® instruments.
	www.kayteck.com /english/pitot_tubes.htm (220 words)

	Pitot-Static System and Instruments
		The pitot tube is a ram air pressure-sensing device usually mounted near the leading edge of the wing and connected to the back of the airspeed indicator case by a tube.
		Due to its location, the pitot tube is susceptible to foreign matter such as dirt, water and ice.
		By comparison, the plane of the pitot tube opening is nearly perpendicular to the relative wind.
	www.allstar.fiu.edu /aero/PSSI.htm (1666 words)

	Heated Pitot
		Since the heated pitot is large, it cannot be installed in exactly the same location as the "stock" bent tube unit shown in Vans' plans (RV-6/6A).
		It is possible for pitot plumbing & wiring to interfere with the aileron pushrod, not to mention that this may be close to the prop wash. Additionally, the fuel tank could be accidentally lowered onto the pitot during fuel tank removal.
		The aluminum tubes must first be fed through the pitot mount (Gretz bracket) from inside the wing and then connected to the pitot fittings (while holding the pitot outside of the wing).
	www.cafes.net /leo/RV-6/Pitot/Pitot.html (969 words)

	Pitot and Static System (Site not responding. Last check: 2007-11-01)
		The pitot tube is normally mounted on the leading edge of a wing.
		Since the impact pressure of the pitot tube is proportional to the speed through the air, the speed through the air is indicated by the instrument.
		The impact pressure at the port of the pitot tube is less at higher altitudes.
	www.uncletom2000.com /gs/pitot.htm (1538 words)

	Pitot Tube Current (Site not responding. Last check: 2007-11-01)
		The pitot tube did not come with any information so I didn't know what size wire to run or what amount of current it would draw.
		I don't know what the ultimate temperature of the pitot tube is suppose to be, but 425 degrees seems excessive.
		I have to think that the airflow over the pitot tube in flight would keep this temperature down but without a thermocouple on the pitot tube in flight, I'll probably never know.
	bmnellis.com /pitotcurrent.htm (313 words)

	Pitot (Site not responding. Last check: 2007-11-01)
		This pitot tube system was patterned after one used on some vintage gliders when cloud flying was legal and encouraged.
		By having the open end of the pick-off tube facing to the rear, the possibility of ice covering the opening is reduced.
		Rather it is a system which is superior to a straight pitot in many respects and yet is easy to construct.
	www.ez.org /pitot.htm (278 words)

	eFunda: Theory of Pitot Static Tubes
		The Pitot tube (named after Henri Pitot in 1732) measures a fluid velocity by converting the kinetic energy of the flow into potential energy.
		Converting the resulting differential pressure measurement into a fluid velocity depends on the particular fluid flow regime the Pitot tube is measuring.
		When a Pitot tube is exposed to a subsonic compressible flow (0.3 < M < 1), fluid traveling along the streamline that ends on the Pitot tube's stagnation point is continuously compressed.
	efunda.com /designstandards/sensors/pitot_tubes/pitot_tubes_theory.cfm (401 words)

	Averaging pitot tubes \| Plant Services
		Because the averaging pitot tube measures and averages the readings from multiple points along the flow profile (see Figure 1), its straight run requirements are less stringent than most other devices, but upstream and downstream disturbances must still be taken into consideration.
		For gas applications, mount the pitot tube in the upper 160-degree portion of the pipe to prevent condensate from collecting in the instrument lines or transmitter (see Figure 3).
		For liquid applications, the pitot tube should be mounted in the lower 160-degree portion to prevent air from collecting in the instrument lines or transmitter.
	www.plantservices.com /articles/2006/153.html (742 words)

	PITOT TUBE INSTALLATION
		#1 The pitot tube is integral with a static source which is the larger outer tube.
		There are two short vinyl tubes, one for the pitot pressure and one for the static pressure.
		There have been many complaints of the pitot tube being broken off by kids at air shows, or young adults blowing into the pitot tube and another watching your ASI to see how good the other kid did.
	www.challengers101.com /PitotTubes.html (819 words)

	Pitot tube anemometer and micro manometer, air flow 1.5 to 5.8 m/s pressure 0-20 mBar
		Pitot tube anemometer and micro manometer, air flow 1.5 to 5.8 m/s pressure 0-20 mBar
		The pitot tube method of measurement employed by the AF200 is suitable over the range 1.5m/s to 58m/s and up to +600°C. The instrument can be corrected for temperature, static pressure, and K factor by keying in the appropriate values.
		This includes 295mm/12” pitot tubes, air temperature probe, instrument protective cover and sling, quick fit pressure connectors, rubber tubing, nylon tubing and 9V PP3 battery.
	www.topac.com /af200.html (337 words)

	Pitot-static installation (Site not responding. Last check: 2007-11-01)
		The pitot bracket has to have a small piece of angle riveted to it so it can be fastened to the wing rib.
		The wire outside of the bundle is the 14 ga. power wire for the heated pitot.
		A bit of the pitot plumbing can be seen through the lightening hole just next to it.
	array.ucsd.edu /rv7a/pitotstatic.html (255 words)

	eFunda: Theory of Pitot Static Tubes
		The Pitot tube (named after Henri Pitot in 1732) measures a fluid velocity by converting the kinetic energy of the flow into potential energy.
		Converting the resulting differential pressure measurement into a fluid velocity depends on the particular fluid flow regime the Pitot tube is measuring.
		When a Pitot tube is exposed to a subsonic compressible flow (0.3 < M < 1), fluid traveling along the streamline that ends on the Pitot tube's stagnation point is continuously compressed.
	www.efunda.com /designstandards/sensors/pitot_tubes/pitot_tubes_theory.cfm (401 words)

	Hobie Kayaks - Mirage Speedometer
		The Pitot tube is the small hole on the front of the plastic spine that is in the water flow.
		When the flow of water hits the spine, or the Pitot tube, it will generate pressure that is measured by a column of water.
		Pitot tubes are used in many boats and planes to accurately measure speed.
	www.hobiecat.com /kayaking/speedo.html (273 words)

	Pitot Tubes and Laminar flow elements – Furness Controls, Inc.
		Also optional is a version with a thermocouple embedded into the Pitot nose for temperature measurement and automatic differential pressure correction in a suitably equipped transmitter.
		The Pitot Static Tubes can be supplied in any length to suit any duct or pipe size; constructed in stainless steel with stuffing boxes and glands in brass.
		The FCO68 range of Pitot Static Tubes features a downstream static tapping to provide a 'k' factor of 1.800 and is generally suitable for industrial air flow applications.
	www.furnesscontrols.com /flow2.htm (442 words)

	USBR Water Measurement Manual - Chapter 14 - MEASUREMENTS IN PRESSURE CONDUITS, Section 10. Pitot Tube Velocity ...
		However, pitot tubes with damaged tips, short tips, tube burrs, and short tips need calibration checks to determine correct tube coefficients that may deviate considerably from unity.
		A more complex form of pitot tube is known as the pitot-static tube, which consists of the total head tube threaded through the center of a larger tube.
		The rate of flow in pipelines under pressure may be computed from the conduit cross-sectional area and velocity observations made by pitot tubes or by commercial adaptations of pitot tubes (ASME, 1983; 1992).
	www.usbr.gov /pmts/hydraulics_lab/pubs/wmm/chap14_10.html (623 words)

	FlowKinetics LLC - Using a Pitot-Static probe
		A Pitot Static tube allows the direct measurement of dynamic pressure allowing calculation of the gas velocity in ducts, pipes, wind tunnels etc. A typical Pitot Static tube is shown in Fig.
		When selecting a Pitot Static tube to be used in conjunction with the FKT Series, it is necessary to select a tube with a constant close to unity, if errors in velocity are to be avoided.
		Measurement starts with attachment of tubing to the Pitot Static tube and the differential pressure transducer of choice (3 are available in the FKT 3DP1A, two in the FKT 2DP1A-C and one in FKT 1DP1A-SV).
	www.flowkinetics.com /measurement.htm (1490 words)

	McArdle Faculty - Henry C. Pitot
		Manoharan, H., Babcock, K., and Pitot, H. Changes in the DNA Methylation Profile of the Rat H19 Gene Upstream Region During Development and Transgenic Hepatocarcinogenesis and Its Role in the Imprinted Transcriptional Regulation of the H19 Gene.
		Haas, M. J., and Pitot, H. Glucocorticoids Stimulate CREB Binding to a Cyclic-AMP Response Element in the Rat Serine Dehydratase Gene.
		Teeguarden, J. G., Dragan, Y., and Pitot, H. Implications of Hormesis on the Bioassay and Hazard Assessment of Chemical Carcinogens.
	www.mcardle.wisc.edu /faculty/bio/pitot_h.html (1792 words)

	Pitot Static System Installation
		The pitot tube is a very important part of the aircraft - not only does it drive most of the flight instruments, it is the first thing on the aircraft...right on the nose cone.
		Of course, the pitot and static systems work together to feed differential air pressure to the instruments.
		The static port lines are run the same way as the pitot lines and terminate at the instruments.
	www.berkut13.com /berkut41.htm (738 words)

	Speedometer Pick-ups & Pitot Tubes
		Ok so you say you're tired of replacing speedometer pitot tubes that have been ripped off or mangled due to unforeseen floating or slightly submerged objects.
		These replacement pitot tubes are available in three popular sizes 5", 7", and 10" lengths.
		This all plastic constructed pitot tube assembly comes with a "tested" to rating of 80 mph.
	www.hardin-marine.com /products/Gauges/pitot-kits.htm (238 words)

	eFunda: Introduction to Pitot Static Tubes (Site not responding. Last check: 2007-11-01)
		A Pitot-static Tube is a flow velocity meter which is capable of measuring fluid velocities as a localized point (as opposed to an averaged velocity across a larger section).
		A schematic of a Pitot tube is shown below.
		The Pitot tube yields a pressure measurement which is typically measured with a differential manometer.
	efunda.com /designstandards/sensors/pitot_tubes/pitot_tubes_intro.cfm (117 words)

	eFunda: Introduction to Pitot Static Tubes
		A Pitot-static Tube is a flow velocity meter which is capable of measuring fluid velocities as a localized point (as opposed to an averaged velocity across a larger section).
		A schematic of a Pitot tube is shown below.
		The Pitot tube yields a pressure measurement which is typically measured with a differential manometer.
	www.efunda.com /designstandards/sensors/pitot_tubes/pitot_tubes_intro.cfm (117 words)

	Shopping.com - Find, Compare, and Buy Anything in Seconds
		James Pitot et al - Observations on the Colony of Louisiana, from 1796 to 1802
		Faria Speedometer Pitot And Assembly 80 MPH Tube.
		Replacement pitot or for use with a new speedometer.
	www.shopping.com /xGS-Pitot (685 words)

	Pitot House
		The Pitot House has had a variety of owners from prominent lawyers to austere nuns.
		One of the most prominent was James Pitot, the first American mayor of New Orleans who lived here from 1810-1819.
		The Louisiana Landmarks Society painstakingly restored the Pitot House, with its stucco-covered, brick-between-post construction and double-pitched hipped roof, to its original 18th century condition in the 1960s.
	pitothouse.org /pitot.htm (252 words)

	Pitot - Pitot Tube Directory (Site not responding. Last check: 2007-11-01)
		It was invented in the 1730s by the French scientist Henri Pitot (1695—1771).
		GlobalSpec offers a variety of pitot tubes for engineers and through SpecSearch the pitot tubes can be searched for the exact specifications needed.
		The Pitot tube is named after its inventor, Henri Pitot, Pitot tube.
	webinfofeed.com /wifd/pitot.htm (399 words)

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