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Weighbridge
A truck scale (US), weighbridge (non-US) or railroad scale is a large set of Weighing scale, scales, usually mounted permanently on a concrete foundation, that is used to weigh entire Railroad car#Freight cars, rail or road vehicles and their contents. By weighing the vehicle both empty and when loaded, the load carried by the vehicle can be calculated. The key component that uses a weighbridge in order to make the weigh measurement is load cells. Weight certification in the United States Commercial scales have to be National Type Evaluation Program (NTEP) approved or certified. The certification is issued by the National Conference on Weights and Measures (NCWM), in accordance to the National Institute of Standards and Technology (NIST), "Handbook 44" specifications and tolerances, through ''Conformity Assessment'' and the ''Verified Conformity Assessment Program'' (VCAP) Legal for trade Handbook 44: General Code paragraph G-A.1.; and the NIST Handbook 130 (Uniform W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truck Scale Software
Truck Scale Software also known in the EU as "Weighbridge Software" is a class of software pertaining to the collection of transactional scale weighment data. Specifically for truck scales used to weigh heavy truck A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame constructi ...s, light trucks, or other commercial vehicles. The basic concept of truck scale software is to provide the end user with a means of collecting and organizing weighment information. Developers The truck scale industry is not a highly vertical niche market as one might expect. With consumers ranging from single-site low transaction " mom and pop shops" to multi-national heavy volume corporations; the various Truck Scale Software development companies have ample opportunity to differentiate by targeting the very different ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weighing Instruments
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Yet others define it as the magnitude of the reaction force exerted on a body by mechanisms that counteract the effects of gravity: the weight is the quantity that is measured by, for example, a spring scale. Thus, in a state of free fall, the weight would be zero. In this sense of weight, terrestrial objects can be weightless: ignoring air resistance, the famous apple falling from the tree, on its way to meet the ground near Isaac Newton, would be weightless. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weighing Scale
A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, and weight balances. The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum. One plate holds an object of unknown mass (or weight), while known masses are added to the other plate until static equilibrium is achieved and the plates level off, which happens when the masses on the two plates are equal. The perfect scale rests at neutral. A spring scale will make use of a spring of known stiffness to determine mass (or weight). Suspending a certain mass will extend the spring by a certain amount depending on the spring's stiffness (or spring constant). The heavier the object, the more the spring stretches, as described in Hooke's law. Other types of scales making use of different physical principles also exist. Some scales can be calibrated to read in units of force (weight) such as newtons instead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gross Weight
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Yet others define it as the magnitude of the reaction force exerted on a body by mechanisms that counteract the effects of gravity: the weight is the quantity that is measured by, for example, a spring scale. Thus, in a state of free fall, the weight would be zero. In this sense of weight, terrestrial objects can be weightless: ignoring air resistance, the famous apple falling from the tree, on its way to meet the ground near Isaac Newton, would be weightless. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Eart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Load Cell
A load cell converts a force such as tension, compression, pressure, or torque into an electrical signal that can be measured and standardized. It is a force transducer. As the force applied to the load cell increases, the electrical signal changes proportionally. The most common types of load cell are pneumatic, hydraulic, and strain gauges. Strain gauge load cell Strain gauge load cells are the kind most often found in industrial settings. It is ideal as it is highly accurate, versatile, and cost-effective. Structurally, a load cell has a metal body to which strain gauges have been secured. The body is usually made of aluminum, alloy steel, or stainless steel which makes it very sturdy but also minimally elastic. This elasticity gives rise to the term "spring element", referring to the body of the load cell. When force is exerted on the load cell, the spring element is slightly deformed, and unless overloaded, always returns to its original shape. As the spring element defor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Conference On Weights And Measures
The National Conference on Weights and Measures (NCWM) is a not-for-profit corporation dedicated to developing the United States technical standards for weights and measures in commerce. The organization's official mission is "Ensuring Equity and Uniform Standards in a Changing Marketplace. History The first Weights and Measures Law was signed on March 2, 1799 by John Adams. NCWM found its beginnings when a meeting of the states was held in 1905 to discuss challenges faced in regulating weights and measures. The outcome was an agreement to meet again the next year and the association took form in an effort to bring stakeholders together to set national standards for voluntary adoption and implementation by the states. Annual meetings have been held every year with the exception of 1909, 1917, 1918, 1932, 1933, 1934, 1942, 1943, 1944, 1945, and 1948. From 1905 to 1957, the Director of the National Bureau of Standards served as Chairman of NCWM. Since 1958, NCWM members have e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Weighbridge
Rail or rails may refer to: Rail transport *Rail transport and related matters * Rail (rail transport) or railway lines, the running surface of a railway Arts and media Film * ''Rails'' (film), a 1929 Italian film by Mario Camerini * ''Rail'' (1967 film), a film by Geoffrey Jones for British Transport Films *''Mirattu'' or ''Rail'', a Tamil-language film and its Telugu dub Magazines * ''Rail'' (magazine), a British rail transport periodical * ''Rails'' (magazine), a former New Zealand based rail transport periodical Other arts * The Rails, a British folk-rock band *Rail (theater) or batten, a pipe from which lighting, scenery, or curtains are hung Technology * Rails framework or Ruby on Rails, a web application framework * Rail system (firearms), a mounting system for firearm attachments * Front engine dragster *Runway alignment indicator lights, a configuration of an approach lighting system *Rule Augmented Interconnect Layout, a specification for expressing guidelines for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weigh Station
A weigh station is a checkpoint along a highway to inspect vehicular weights and safety compliance criteria. Usually, trucks and commercial vehicles are subject to the inspection. Weigh stations are equipped with truck scales, some of which are weigh in motion and permit the trucks to continue moving while being weighed, while older scales require the trucks to stop. There are many different scales used, from single axle scales to multi-axle sets. Signal lights indicate if the driver should pull over for additional inspection or if they are allowed to return to the highway. Many jurisdictions employ the use of portable scales, allowing weigh stations to be set up at any point. Portable scales allow states to set up temporary scales for situations such as seasonal check points, temporary checkpoints on isolated roads often used by trucks, or to prevent drivers from avoiding scales at fixed locations. Portable scales may be set up at purpose built locations that are not normally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weigh Lock
200px, A weigh lock on the Lehigh Canal around 1873 A weigh lock is a specialized canal lock designed to determine the weight of barges in order to assess toll payments based upon the weight and value of the cargo carried. This requires that the unladen weight of the barge be known. A barge to be weighed was brought into a supporting cradle connected by levers to a weighing mechanism. The water was then drained and the scale balance adjusted to determine the barge gross weight. Subtracting the tare weight Tare weight , sometimes called unladen weight, is the weight of an empty vehicle or container. By subtracting tare weight from gross weight ( laden weight), one can determine the weight of the goods carried or contained (the net weight). Etym ... (the weight of the barge when empty) would give the cargo weight. Originally weighlocks measured the weight of the barge, initially by measuring the displacement of water from the lock by collecting the liquid in a separate measur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tare Weight
Tare weight , sometimes called unladen weight, is the weight of an empty vehicle or container. By subtracting tare weight from gross weight ( laden weight), one can determine the weight of the goods carried or contained (the net weight). Etymology The word ''tare'' originates from the Middle French word 'wastage in goods, deficiency, imperfection' (15th ), from Italian , from Arabic , lit. 'thing deducted or rejected', from 'to reject'. Usage This can be useful in computing the cost of the goods carried for purposes of taxation or for tolls related to barge, rail, road, or other traffic, especially where the toll will vary with the value of the goods carried (''e.g.'', tolls on the Erie Canal The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly redu ...). Tare weight is often publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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