Non contact laser Doppler velocimeter

Product Overview

SL miniandSLR mini i4Non contact laser velocimeter, designed specifically for measuring the speed and length of objects, and suitable for fixed length cutting needs. Its compact and lightweight size, easy installation method, and excellent cost-effectiveness makeSL(R) miniThe series has become the ideal choice for users.

It can be widely used in various industries such as wires and cables, pipes, films, steel, corrugated paper, non-woven fabrics, textiles, waterproof materials, gypsum boards, and printing.

It not only has comprehensive functions, but also has excellent intelligent features. The sensor is built-in32Bit communication processor and supports EthernetModbusTheOPC-UATheRS232TheRS485andWiFiVarious communication methods are available to easily meet industrial needs4.0The requirements of the times for digitalization and intelligence in production. In addition, it also comes pre installedProfibusandProfinet, making andPLCThe connection of the system has become simple and efficient.

SL(R) miniSeries product highlights

· Non contact measurement, no wear, no slipping

· Compact size and easy installation, outstanding cost-effectiveness

· Can replace traditional meter wheels and achieve upgrades

· Pulse output method, similar to encoder function

· Independent working system, also compatible withPLCSeamless connection

· standard configurationRS232/485And network interface, suitable for industrial use4.0Communication requirements

Working principle---Measurement using laser Doppler effect

InteliSENS ® The SL mini i4 series unidirectional speed and length measuring instrument uses the interference fringe spot generated by the intersection of two laser beams on the surface of the measured object. The light interference fringes with alternating brightness modulate the scattered light of an object, and their frequency is proportional to the object's velocity. This scattered light is detected by a photodiode, and the digitized electrical signal can determine the frequency, which is the speed of the object's movement. Then, by integrating the time and speed measurement values, the length of the object can be calculated.

InteliSENS ® The SLR mini i4 series bidirectional velocimeter continues this measurement principle and uses a high-frequency Bragg unit modulator's scanning interference fringes to illuminate the measured surface. These interference fringes produce oscillating light signals even when the object is stationary. The direction of motion is determined by whether the scattered light frequency is higher or lower than the stationary frequency.

Measure distance and depth of field
SL mini i4andSLR mini i4Non contact laser Doppler velocimeterof“measure distance”and“depth of field”All follow specific specifications. The tested object should be placed in“measure distance”within the scope of“depth of field”To ensure accurate measurement. among which,SL mini 3060 i4andSLR mini 3060 i4The model is highly recommended due to its practicality and cost-effectiveness,Often asIdeal choiceFor materials with low reflectivity or applications with limited space,SL mini 1220 i4andSLR mini1220 i4It is more applicable.

Technical Specifications

After understanding the importance of measuring distance and depth of field, we further exploreSL mini i4andSLR mini i4Non contact laser Doppler velocimeterTechnical specifications. These parameters not only affect the performance of the instrument, but also directly impact the accuracy and reliability of the measurement.

Application case analysis
I have mastered itSL mini i4andSLR mini i4Non contact laser Doppler velocimeterAfter obtaining the technical specifications, we further explored the actual usage effects of these two instruments through on-site application cases. These cases not only demonstrate the outstanding performance of the instrument in various complex environments, but also validate its advantages in measurement accuracy and reliability.

SL(R) miniThe series of laser velocimeters play an important role in the production of wires and cables, and are suitable for multiple processes such as extrusion, twisting, and single wire. Its high-precision measurement characteristics result in errors that are only within±0.05%This ensures precise control of the length of the measured object, not only saving costs but also significantly improving the production efficiency of the enterprise.


SL(R) miniThe series of laser speed measuring instruments adopts a non-contact design, which is non-contact with the cardboard, effectively avoiding the indentation caused by traditional speed measuring wheels on corrugated cardboard. At the same time, this non-contact measurement method also solves the common problems of slipping and wear of traditional pressure wheel meters. Its high-precision measurement characteristics ensure the flatness and consistency of the paper cut length. In addition, the laser velocimeter also has the advantages of calibration free and maintenance free, further reducing equipment maintenance costs and improving usage efficiency.

The non-contact laser velocimeter is not only suitable for measuring conventional paper, but also meets the measurement needs of special products, achieving the advantages of non slip, non wear, and high-precision measurement.
For transparent objects such as thin films and test objects with thinner materials, the slip problem of traditional speed measuring wheels during high-speed production can lead to increased errors. ButSL(R) miniThe series of laser Doppler measuring instruments, with their non-contact characteristics, can0-3000m/minMaintain a stable signal within the detection speed range, effectively solving the error problem caused by high-speed production. In addition, this series of measuring instruments also has the characteristics of small and lightweight, easy installation, high measurement accuracy, and fast operation. At the same time, it supports data storage and retrieval at any time, meeting various complex measurement needs.

Traditional speed measuring wheels are often difficult to achieve accurate measurements for rough, irregular shaped, and soft textured objects such as carpets and textiles, and may even cause indentation or wear on the products. However,SL(R) miniThe series of laser Doppler measuring instruments solve this problem with their non-contact characteristics. This series of measuring instruments has zero contact with the measured object during the measurement process, thus avoiding the risks of indentation and wear. Meanwhile, its high-precision measurement error is controlled within±0.05%Internally, the signal is stable, ensuring the uniformity of the measured length of the object, saving customers a lot of costs.