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Topic: Constantan

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	Constantan Wire Mesh - baidugou Nickel Wire Mesh Factory !
		Constantan Wire Mesh - baidugou Nickel Wire Mesh Factory !
		We produce galvanized iron square wire mesh from selected quality plain steel wire, for a wide use of window netting, safety guards for machinery enclosures, filtering of liquid and gas, sieving of grain, etc.
		Copyright © 2005 Anping baidugou Non-ferrous Metal Wire Mesh Factory.
	www.china-hshui.com /hongtawiremesh/hualian-wire-mesh/constantan-wire-mesh.htm (54 words)

	Copper Constantan Thermocouple Probes
		Copper Constantan Thermocouple Air and Gas Probe This Probe is for instant readings of temperature gradients in environmental chambers, freezer boxes, etc. It has a 4.8 mm (3/16 in) diameter by 610 mm (24 in) long #304 stainless steel shaft with a wooden handle and 1.5 m (5...
		Copper Constantan Thermocouple Kaptan Insulated Probe This Probe is for multi-point measurements.
		Copper Constantan Thermocouple Microprobe This Probe is for use on micro-specimens.
	www.harvardapparatus.com /webapp/wcs/stores/servlet/category_11051_10001_37622_-1_HAI_Categories_N_37621_37610___ (725 words)

	8486. Constantan Resistivity
		Constantan's electrical resistivity is 300 Ohms/Cicular Mil-Foot, compared to 10.7 Ohms/CMF for 99.99% copper
		It gives all the figures (inc. resistivity) for various materials inc. constantan.
		I also saw the 4910^-8 but this said it was "constantan* (eureka)"
	www.finishing.com /84/86.shtml (71 words)

	Physics
		During my tests I will experiment with the length of constantan to see the most suitable lengths, since some lengths may be too long that they resist so much current that the wire burns, or the length of the wire is so small that it doesn't resist any current at all.
		The thermometer which was used to measure the temperature of the water never made contact with the constantan wire meaning it was always measuring the temperature of the water and the not the piece of wire which made it a fair test.
		The size of the crocodile clips which were used to hold the lengths of constantan wire were a bit too large which meant they caused trouble by making contact with the constantan wire, especially with the long lengths, resulting in a unusually high temperature rise.
	www.btinternet.com /~londonmagnet/portlandplace/physics.html (4589 words)

	Brainboost - what is a constantan wire used for (Site not responding. Last check: 2007-10-29)
		A constantan wire is connected to the copper wire to form a copper - constantan junction as described in INSIGHT Vol 4 No..
		Constantan - 16swg CONSTANTAN WIRE 1 per pack - A copper nickel wire for making resistance elements Non insulated 125g reel Diameter 1 62mm SWG 16 7m long 0 244 Ohms metre All figures approx - Ref CB0400 - ..
		The Copper - Constantan thermocouple, with a positive copper wire and a negative Constantan wire is recommended for use in mildly oxidizing and reducing atmospheres up to 400C They are suitable for applications where moisture is present.
	www.brainboost.com /search.asp?Q=what+is+a+constantan+wire+used+for&lfmq=1 (151 words)

	Device sensitive to a temperature gradient and its application for constructing a thermal fluxmeter or solar sensor - ...
		When the constantan is coppered, there appears in the constantan circuit a voltage V.sub.2 proportional to the difference of temperature between the ends of the coppered region.
		When the constantan is not entirely coppered, the induced voltages are proportional to the instantaneous spatial mean of the thermal gradient in the coppered regions.
		copper, coppered constantan, constantan, copper, coppered constantan, constantan.
	www.freepatentsonline.com /4382154.html (3782 words)

	Strain Gage: Sensitivity
		Constantan (Advance, Copel alloy) is the oldest and most widely used strain gage materials.
		The resistance of Constantan drifts continuously when the temperature raises above 65 ºC (150 ºF), which may become troublesome for strain measurements over a long period of time or in high temperature.
		Constantan and Karma alloy are two most common gage wire material which have self-compensation property.
	www.efunda.com /designstandards/measurements/strain_gages/strain_gage_sensitivity.cfm (659 words)

	Singapore Science Centre: ScienceNet\|Engineering / Technology / Engineering Materials\|Electrical Engineering
		Constantan is an alloy of 45 percent nickel and 55 percent copper, used chiefly in electrical instruments because of its constant resistance under variations of temperature.
		Wires such as constantan and iron can be used to manufacture thermocouples, with a comparatively large e.m.f.
		Of all modern strain gauge alloys, constantan is the oldest, and still the most widely used.
	www.science.edu.sg /ssc/detailed.jsp?artid=1535&type=6&root=3&parent=3&cat=28 (351 words)

	Constantan® - Resistance Alloy - Goodfellow, online source, sources, small quantity,quantities
		Constantan also shows better corrosion resistance than the manganins.
		Constantan is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications.
		Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures.
	www.goodfellow.com /csp/active/static/A/Constantan_-_Resistance_Alloy.HTML (157 words)

	Constantan Alloy: Strain Gage Selection
		It must be noted, however, that constantan tends to exhibit a continuous drift at temperatures above +150 deg F (+65 deg C); and this characteristic should be taken into account when zero stability of the strain gage is critical over a period of hours or days.
		Very importantly, constantan can be processed for self-temperature compensation to match a wide range of test material expansion coefficients.
		Constantan in this form is very ductile; and, in gage lengths of 0.125 in (3 mm) and longer, can be strained to >20%.
	www.vishay.com /brands/measurements_group/guide/tn/tn505/505b.htm (327 words)

	Constantan Foil / Sheet / Wire from READE (Site not responding. Last check: 2007-10-29)
		Constantan Foil / Sheet / Wire from READE
		constantan sheet, constantan foil, constantan strip, constantan bar, constantan wire, constantan plate, constantan sheet, constantan foil, constantan strip, constantan bar, constantan wire, constantan plate
		A copper nickel alloy that contains specific minor amounts of additional elements to achieve precise values for the temperature coefficient of resistivity
	www.reade.com /Products/Alloys/constantan_foil_sheet.html (94 words)

	Cement-On Surface Thermocouples
		Type T (Copper - Constantan) 36", cement on Thermocouple
		Type T (Copper - Constantan) 6", cement on Thermocouple
		Type J (Iron - Constantan) 36", cement on Thermocouple
	www.omega.com /redirect_page.asp?ref=CO-K&Nav=temA03 (963 words)

	Constantan (Site not responding. Last check: 2007-10-29)
		The word "constantan" uses 10 letters: A A C N N N O S T T.
		Words within constantan not shown as it has more than seven letters.
		List all words starting with constantan, words containing constantan or words ending with constantan
	www.morewords.com /word/constantan (152 words)

	Chapter 1
		Constantan is an alloy of copper and nickel with a typical composition Cu57Ni43 plus the addition of small percentages of Mn and Fe.
		The constantan used with the type J thermocouple cannot be used with the type T thermocouple because of different voltage requirements.
		The limits of error of the type T thermocouple are totally dependent upon the degree of reproducibility of constantan from melt to melt.
	www.wici.com /technical_info/articles/temp_prm/tmprmch1.htm (4755 words)

	Thin-film strain gauge - Patent 4522067
		It is furthermore known to fabricate the resistance elements from a material or combination of materials such that the electric resistor has a low temperature coefficient, so that errors in measurement caused by temperature fluctuations are prevented; temperature fluctuations are perceived in the same manner as deflections of the element.
		The track segments comprise constantan doped with nitrogen and/or air, which in this manner is given a temperature coefficient which is approximately equal to the temperature coefficient of the resistance layer.
		While pure constantan has a temperature coefficient of approximately 10 ppm/.degree.K., the constantan sputtered with 1% nitrogen in the discharge gas, for instance, has a temperature coefficient of -80 ppm/.degree.K., which corresponds to the temperature coefficient of the tantalum nitride layer for the resistors which has been formed by sputtering using this discharge composition.
	www.freepatentsonline.com /4522067.html (2935 words)

	Alcor (Site not responding. Last check: 2007-10-29)
		Constantan: A type of special thermocouple metal used on Type-E, Chromel/Constantan thermocouples.
		Cylinder Head Temperature (CHT): Temperature measured either inside the casting of the cylinder head by means of a hole under the lower spark plug (when provided) or measured by means of a round thermocouple sensor located under the spark plug.
		Iron: A component of Type-J thermocouple and wire that are composed of Iron and Constantan.
	www.alcorinc.com /support/glossary/index.htm (843 words)

	Linear, Torsion/Shear Half-Bridges & Axial : Transducer Gages
		Constantan foil with 5 mm, 350 Ohm grid matched to Carbon Steel (pkg of 5)
		Constantan foil with 6 mm, 350 Ohm grid matched to Carbon Steel (pkg of 5)
		Constantan foil with 4 mm, 350 Ohm grid matched to Carbon Steel (pkg of 5)
	www.omega.nl /ppt/ppt_eng.asp?ref=XDUCER_GAGES (708 words)

	Resistivity : Constantan resistivity and temperature
		Constantan alloy was discovered by a process of trial and error.
		A 60% Copper, 40% Nickel alloy was found to give the least change in resistance with temperature.
		Of course they have to spend energy going up and down the aisle, so the alloy Constantan has a higher resistance than both Copper and Nickel, but it does not change with temperature.
	www.seed.slb.com /qa2/FAQView.cfm?ID=397 (785 words)

	List Mil Specs - DSCC (Site not responding. Last check: 2007-10-29)
		This specification covers iron and constantan thermocouple wire.
		Type 1, classes A, B, C, D, and E wire are intended for use in fabricating thermocouples where high accuracy electromotive force calibration is required.
		Types 2 and 3, class C wire are intended for general laboratory use where conditions do not require that the iron wire be protected against corrosion.
	www.dscc.dla.mil /Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-W-5845 (148 words)

	United Electric Controls \| Featured Products
		The Iron - Constantan "J" curve thermocouple is the most widely used thermocouple; it is versatile and has a relatively low cost.
		The Copper - Constantan "T" curve thermocouple, with a positive Copper wire and a negative Constantan wire, is recommended for use in mildly oxidizing and reducing atmospheres at temperatures from 0° to 350° C (32° to 660 °F).
		It has a positive Chromel wire and a negative Constantan wire and is recommended for use in oxidizing, inert or dry reducing atmospheres or for short periods of time in a vacuum.
	www.ueonline.com /products/fp_tempsensors.htm (1537 words)

	Neowin Forums [Powered by Invision Power Board]
		there were different sizes, constantan 30, 32, 36 etc..
		Constantan numbers are usually the co-efficient numbers of thermal expansion.
		Of course, the more material you have, the more atoms you have, more delocations due to the vibration of atoms = increased expansion.
	www.neowin.net /forum/index.php?act=Print&client=printer&f=7&t=68759 (323 words)

	MANUFACTURE, EXPORTERS, SUPPLIER, PHYSICS LABORATORY EQUIPMENTS, POST OFFICE BOXES, PSAWINDIA (Site not responding. Last check: 2007-10-29)
		Consisting of 12 mm thick rectangular brass block and coils are wound with constantan coil having accuracy within ± 0.1%.
		Constantan coil, Accuracy ± 0.1% Rest specifications are same as described above.
		Consisting of 12mm thick rectangular brass block and coils are wound with manganin coil having accuracy within ± 0.05%.
	www.psawcatalogue.com /post-office-boxes-p-52.html (143 words)

	Dynasen's Stress / Strain Gauges
		Thus, from a "pre-knowledge" of strain effects upon the stress sensor and a concurrent strain measurement from a constantan strain gauge, one can readily infer the level of stress acting upon stress/strain package using simple modeling.
		Our model Mn/Cn2-50-EK stress/strain gauge is a dual-sensor in-plane arrangement consisting in one each Manganin and Constantan elements that are cemented between two layers of 0.001 Inch thick Kapton.
		Calibration curves are available for the strain factor values of Manganin and Constantan gauges versus strain.
	www.dynasen.com /html/stressstraingages.html (384 words)

	Essay: Investigate young's modulus behind Constantan and Copper. - Coursework.Info
		Essay: Investigate young's modulus behind Constantan and Copper.
		Plan: For this particular investigation, I have been issued with the results and have been asked to analyse the results finding the young's modulus for two materials, which are: Copper and Constantan.
		From the results given, I will construct the necessary graphs, analyse, and compare the materials so I can successfully compare the young's modulus of the given materials.
	www.coursework.info /GCSE/Physics/Investigate_youngs_modulus_behind_Constantan_and_Copper_L43178.html (273 words)

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