They are also less prone to sensor wear and won't dampen the motion of a target. Linear sensors provide a continuous measurement over a range of distance or displacement as opposed to proximity sensors which only indicate when a particular displacement has been reached. Non-contact length and speed measurement systems avoid the measurement pitfalls encountered by mechanical contact systems. Common products measured using the laser Doppler speed and length measurement include items such as wire, paper, building or construction materials and plastic film. MID Denotes Measuring Instrument Directive for Europe. Measure height or thickness of thin films, wafers, and other spectral targets. Customers are requested to send their units overnight to PROTON for verification and adjustment (if necessary). Reach him at (tel. ) Non-contact length measurement: The non-contact ELOVIS length measuring devices are listed here. Consisting of a rotary encoder, measuring wheel and spring assembly, the DBV50 is an out of the box measuring wheel encoder solution. For repeatable measurements, replace manual tape measures with accurate data from our laser rangefinders and laser sensors.
About the author: Peter M. Nawfel is LSV sales/product manager at Polytec PI, Inc. in Auburn, Massachusetts, USA. Over the last 30 years, LaserSpeed® gauges have set the standard of innovation for accuracy and reliability for non-contact length and speed measurement. Avoid product waste. 5% or higher; greater than 1. There are differences between contact sensors, however, and there also various non-contact measurement technologies. Automatic recognition of position and origin? High precision and highly durable detection with up to 0. Low operating and maintenance costs. Measurement problems with traditional contact measurement devices: - Lack of accuracy due to slippage of tactile driven encoders (Wear, contamination, adhesion problems, accelerations, …). Non-contact systems can also measure more points at one time and without putting pressure on the object. "The Speetec's non-contact measurement principle means there is no danger of marking or damaging the substrate, particularly important, for example for delicate, smooth or soft fabrics. For sensitive, flexible and fragile surfaces, customers in the industrial automation and logistics sector need contactless measurement systems for measuring length, or speed on continuous bands but also on singular objects, for cutting process for example or synchronization. A wide range of mechanical encoder designs are available to make the installation of the encoder to the conveyor as simple as possible.
The result was an error in calculated surface speed at the time of splicing. It also eliminates quality issues due to scratching or marking of the surface. This advanced and affordable technology eliminates the measurement errors associated with contact wheel tachometers and drive systems as a result of slippage and mechanical wear. This new non-contact sensor is able to measure on a wide range of continuous webs and objects and allows dimensional checks and cuts to be carried out with very high precision. LDV uses the Doppler shift in a laser beam to measure the velocity of moving transparent, semi-transparent, or opaque reflective moving surfaces. Compact velocimeter generation. Sensor A5S0DD0 for detection of rotational speed and highest safety requirements up to SIL3 The BRAUN Speed Sensors Series A5S0 are TÜV certified for SIL3 acc. For example, non-contact encoders use a unique, laser-based measurement technique that does not make contact with the product. Too fast material movement (henceforth only random checks feasible). The non-contact measurement is performed with a laser Doppler process at speeds of up to 10 m/s. Inkjet Print Control||Spool Length|. ProSpeed is the reliable sensor technology for the steel, aluminum and metals industry: Whether sheet material or piece good, from length control of cut sheets to speed measurement for the regulation of roll gaps according to the mass flow principle until cut-to-length control in continuous casting. In the Product discipline, Speetec received the iF Design Award 2020.
These errors can be large enough to create wide variations in tension, causing a break during splicing. The output of the measured values, facilitating integration, is carried out via TTL or HTL interfaces common in the encoder sector. Regular Lens for Flat Surface Products. The next generation optical speed and length sensor ProSpeed LSV-2100 is designed to reliably perform even under harsh conditions and with up to 3 meters stand-off distances. Measuring solution for optimizing the production processes of in-line products for accurate detection of the length and current speed.
Speed, length, signal quality, status, laser interlock, valid measurement. Laser displacement sensor - Ultra High-Speed and High-Accuracy. Look yes, touch, no: the sensor for special materials. From the order in which the pulses appear the user can... Easy data management? Speed Measurement Range. Thanks to the optical measurement the sensor captures length and speed reliably in challenging industrial environments. Its shape and compact size characterize the quality of its development and allow integration even in limited spaces. The installed mechanical encoder wheel experienced slippage errors of up to 2. Non-contact speed sensors. All outputs are integrated within the Sensor. The SICK Speetec can be set up in a matter of minutes and does not require any supplementary electronics to process the signal output, Sick says. A-37, Virwani Industrial Estate, Western Express Highway, Goregaon (E), Mumbai, Maharashtra, 400063, India. 25 mW, 780 nm (Laser Class 3B).
Measurement at the production output with a portable µSPEED system. Remote Optical Sensor High-Temperature PN: 6180-058-25 Includes: 25 ft. cable with tinned leads, mounting bracket with jam nuts and 12 inches of T-5 Reflective Tape DESCRIPTION: 1-50, 000 RPM! For very high switching frequencies up to 15, 000 Hz Precise detection of the toothed wheel Wide operating temperature range Quick installation with flange adapters. Fast, reliable and accurate measurement. The SPEETEC® offers a new way to measure without slip, measuring elements or marking, and wear and tear on tactile sensor elements. With the SPEETEC®, SICK has expanded its product range for speed and length measurement of objects moving in a linear path to include technology that measures directly on the material surface. In regards to the parent reel on a flying splice, due to centrifugal force, the diameter will increase with increasing speed. Digital measurement of all lengths ⇒ 100% documentation and traceability of the measurement results. Since the SPEETEC® is equipped with class 1 lasers, it offers an alternative to expensive laser velocimeters and the associated costly protective measures. Measures almost any material with no chance of damage or slippage. Carpet and flooring industry (rolls, tiles, …).
A good solution for many applications is the use of a so-called "measuring wheel". Improves profitability (high measurement accuracy, reducing rejects in cut-to-length processes), - Better productivity (no slippage possible allowing higher dynamics and increased process speed), - Reduces downtime (due to wear of tactile measuring devices caused by abrasion), - Easy to integrate (small size, easy to use for new machines or existing equipment). But this is not so easy if you're using a contact-type measurement system to control the length and speed of web-based products. The laser beams from the test gauge create a Doppler frequency pattern on the tangential surface of a calibration wheel that is used to measure its speed and cumulative run length. The LaserSpeed® Pro LS4500 is the most accurate gauge available on the market today delivering an accuracy of better than ±0.
Vehicle Speed Measurement. Unlocking Latency: 0. Are housed in rugged enclosures to survive harsh industrial environments. Please refer to our Privacy Policy for details on how DirectIndustry processes your personal data. The resulting reduced maintenance costs and increased output mean that you will see a fast return on the investment you made in your measuring device. Also, many products are marked, scored or creased by the contact of a measurement device, possibly resulting in damaged product. Construction industry: - Wood industry (veneer, firewood, slabs, …). Automated routine applied every time. With its non-contact gauges for length measurement, ELOVIS replaces measuring wheels and drive-based or measuring roll-based measurement solutions. In general, most contact wheel encoder systems provide a length error of 0. The maintenance free and long term calibrated µSPEED systems measure nearly all surfaces without parameter setting.
In general, a missed splice can cost a mill from $500 to $8500 for various operations, processes, down time, and equipment. The gauges are extremely easy to install, set up and integrate into an existing control system, or can be used as a stand-alone system. Non-contact laser encoders, such as NDC Technologies' LaserSpeed Pro, measure product length and speed with better than +/-0. Because contact-type devices must touch and then traverse the object, measurement is slower. The Return on Investment (ROI) is often only a few weeks or a few months. Sensor Time Constant: 0. Measurement advantages with non-contact ELOVIS measuring instruments over other gauges: - Wear-free, maintenance-free, permanently calibrated ⇒ no maintenance costs. 1 and 10 m/s to measure directly on the material surface with an accuracy of 0. What do you think of this article?
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