LMP SERIES NONCONTACT LASER DIAMETER MEASURING DEVICE

The most precise of its class non-contact laser scan micrometer system for round products diameter measurement. 

Round product diameter measuring system enables to monitor required parameters during production thereby respond to appeared undesirable deviations or discrepancies. 

Allows measurements: Stacionary measurement of round logs (diameter, ovality and position of the surface defect). Continuous measurement of diameter at production line (diameter, tolerance deviation and position).

Systém benefits:

• Ultra-fast scanning – 1600 scans per second
• Robust design
• Settings tolerance limits 
• Use for different diameters
• Speed control 
• Composition of the evaluation unit according to DIN standards
• Easy installation and operation 
• Sample complex measurement 

Applications: 

• Ovality measurement 
• Round shape diameter measurement – rods, wires, optical fibers

Measuring systems for measuring the dimensions and cross-sections of rolled products. 

PROGAUGE measurement systems provide product parameters on-line for monitoring and controlling your rolling or production process. 

The core technology for all areas of applications is the contactless measurement of cross-sections by two-dimensional triangulation. With this technology, we are able to realize metrology solutions for a wide variety of production lines in the metal processing industry. Our measurement systems are individually customized to the product portfolio for each customer and their infrastructural conditions, such as the plant layout of the rolling mills. References for our realization expertise are found in a wide variety of rolling lines, from wire production to heavy steel beam rolling lines.

• Non contact laser measurement systems for measuring dimensions and cross sections of rolled products. 
• Measuring principle – scanning of the laser line projected onto the surface of the measured materiál.
• Hot and cold measurements.
• High speed and measurement accuracy – up to 5000 scans per second
• Universal device for measuring a wide portfolio of products of various size
• Detection of surface defects

Aplications: 

• Rails
• Wires
• Bars
• Light and medium rolled products
• Heavy rolled products

LMP SERIES NONCONTACT LASER DIAMETER MEASURING DEVICE

The most precise of its class non-contact laser scan micrometer system for round products diameter measurement. 

Round product diameter measuring system enables to monitor required parameters during production thereby respond to appeared undesirable deviations or discrepancies. 

Allows measurements: Stacionary measurement of round logs (diameter, ovality and position of the surface defect). Continuous measurement of diameter at production line (diameter, tolerance deviation and position).

Systém benefits:

• Ultra-fast scanning – 1600 scans per second
• Robust design
• Settings tolerance limits 
• Use for different diameters
• Speed control 
• Composition of the evaluation unit according to DIN standards
• Easy installation and operation 
• Sample complex measurement 

Applications: 

• Ovality measurement 
• Round shape diameter measurement – rods, wires, optical fibers

Polytec

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The Laser-Doppler Velocimetry
Laser surface velocimeters work according to the Laser Doppler Principle and evaluate the laser light scattered back from a moving object or surface. Polytec’s LSVs are based on the very challenging and sophisticated heterodyne detection method. Unlike conventional non-contact methods which measure only the absolute value of the velocity, Polytec’s LSVs can also detect changes in the object’s direction and even standstill conditions. The measurement precision is not dependent on the velocity, so even very small movements can be precisely recorded.

The Differencial Doppler Technique

To perform a speed measurement on moving objects, which can in principle be of any length, you require a measurement setup with a sensor which is mounted perpendicular to the surface it is measuring on. Polytec velocimeters work according to the so-called Differential Doppler Technique. Here, two laser beams – which are each incident to the optical axis at an angle φ – are superimposed on the surface of the sample. For a point P, which moves at velocity v through the intersection point of the two laser beams, the frequencies of the two laser beams are Doppler shifted in accordance with the above formula.

Both the laser beams are superimposed in the measurement volume and, in this spatial area, generate an interference pattern of bright and dark fringes. The fringe space Δs is a system constant that depends on the laser wavelength λ and the angle between the laser beams 2φ:

Δs = λ/(2 sin φ)

If a particle moves through the fringe pattern, then the intensity of the light it scatters back is modulated. As a result of this, a photo receiver in the sensor head generates an AC signal, the frequency fD of which is directly proportional to the velocity component of the surface in measurement direction vp, and it can be said that:

• fD = vp/Δs = (2vp/λ) sin φ
• fD = Doppler frequency
• vp = Velocity component in the direction of measurement
• Δs = Fringe space in the measurement volume

The value λ/sin φ makes up the material measure for the velocity and length measurement. 

The Heterodyne Technique
Laser surface velocimeters that work in the so-called heterodyne mode show a frequency offset of 40 MHz of one of the laser beams. This makes the fringes in the measurement volume travel with a velocity corresponding to the offset frequency fB. This then makes it possible to identify the sample’s direction of movement and to measure at the velocity zero. The resulting modulation frequency fmod at the photo receiver in heterodyne mode is:

fmod = fb + vp / Δs = fb + (2vp/λ) sin φ

The modulation frequency is determined in the controller using Fourier transformation and converted into the measurement value for the velocity vp. The length measurement is performed by integrating the velocity signal.

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Polytec laser surface velocimeters, known as LSVs for short, provide you with support when you’re monitoring continuous material and piece goods in the production process. They can be integrated in a very flexible way, are convenient to set up and yet are extremely easy to use and dependable in operation. It doesn’t matter whether you’re producing belts, pipes or profiles with a shiny or a matt surface – a Polytec LSV adapts to any task and measures the surface velocity and cut lengths of the items with zero contact and from a safe distance.

The LSV product line includes compact sensors, modular systems and models certified according to MID. 

ProSpeed LSV 2100 – NEW Laser surface velocimeter

MEASURE SPEED AND LENGTH WHILE DETECTING STANDSTILL AND DIRECTION

• Easy process integration with long stand-off distances up to 3m
• Transparency thanks to enhanced connectivity with touch screen, web interface, Ethernet, fieldbus protocols
• Multi-user access (3 via Ethernet + 1 serial)
• No recalibration required
• Determines direction of motion and standstill
• Visible laser for easy alignment
• Robust sensor technology (IP 66, 67)
• Application-optimized accessories such as thermo-protective housing, air wipe and air amplifier, cooling plate, beam deflection unit and more

LSV 2000 – Laser surface velocimeter

MEASURE SPEED AND LENGTH WHILE DETECTING STANDSTILL AND DIRECTION

• Attractive price / performance ratio and excellent cost-effectiveness
• All-in-one system, simple process integration
• Heterodyne detection method for highly accurate length and velocity measurements
• Detects forward and backward movements as well standstill conditions
• Robust sensor technology for reliable operation even under harsh conditions; housing protection classes: IP66 and IP67
• Reliable material detection (“Material Present” function)
• Two trigger inputs available for additional light barriers, or optical switches for high-precision edge detection and offset length compensation
• Fast signal processor with powerful command set for short response times
• Flexible interface concept
• Application-optimized accessories such as optional cooling, air purge and thermo-/ protective housing for use in challenging production environments

LSV 1000 – Laser surface velocimeter

• Attractive price / performance ratio and excellent cost-effectiveness
• All-in-one system, simple process integration
• Robust sensor technology for reliable operation even under harsh conditions; housing protection classes: IP66 and IP67
• Reliable material detection (“Material Present” function)
• Two trigger inputs available for additional light barriers, or optical switches for high-precision edge detection and offset length compensation
• Fast signal processor with powerful command set for short response times
• Flexible interface concept
• Application-optimized accessories such as optional cooling, air purge and thermo-/ protective housing for use in challenging production environments

LSV Logger

Lsv Logger was developer by SSK company to provide a clear view of real-time measurement results and archiving. Archived data can be used for statistics purposes. This software provides a clear overview of the current measurement data as well as the basic data of the Polytec measuring head. LSV Logger offers language localization in all languages according to the customer’s requests. There is an option to switch different measurement units.

Main features:

• On-line displaying
• Archiving of measured data
• Basic diagnostics of the Polytec
• Material cutting mode
• Ethernet communications
• Software offers 30-day TRIAL VERSION and FULL VERSION, which is available from a local distributor of Polytec. The licence is bound to the seriál number of the Polytec measuring head.

More information about LSV Logger here.

https://www.youtube.com/watch?v=bR4stGTDHrw

The radiometric belt scales from Berthold are used to measure flow rates and throughput on all kinds of conveying systems. The major advantage of our radiometric weighing systems is that the measurement performance is very stable over years of operation with repeatability of ±1%. Thus frequent recalibrations are not required. Due to the non-contacting nature and the lack of moving parts, encrustations, dirt, wind or changing belt tension don’t affect the bulk flow measurement. The Berthold weighing systems can be easily retrofitted on existing conveyors without modification or process downtime. Measurement is carried out on

• Belt conveyors
• Screw conveyors
• Drag chain conveyors
• Vibrating conveyors

Besides current flow rate the systems also provide total solids mass (tonnage) and batch measurements. Applications of Berthold belt scales are found in all different bulk handling industries from mining to the building materials industry, from chemical plants and power plants to the pulp & paper industry. Customers benefit from improved control in mixing processes, compliance to delivery contracts and optimal utilization of loading capacities. Worldwide there are more than 2000 systems successfully in operation.