Sensor Instruments
Entwicklungs- und Vertriebs GmbH
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Press Releases Sensor Instruments


24 November 2021
 
  Spray jet control in transmitted light

When designing spray systems, it is important to ensure that the sensor technology is matched to the size of the spray cone and the spray volume of the application in question. Furthermore, the geometry of the spray cone and the spray quantity depend on the medium used (primer, adhesive, solvent, water, alcohol, paint, etc.) as well as on the spray nozzle opening, the overpressure and the spray quantity dosage. Particularly when using tough, adhesive media (glue) as a spraying agent, it can happen that part of the spray nozzle opening sticks, which leads to a change in both the spray quantity and the spray geometry. As a result, the spray jet can be changed in terms of direction as well as opening angle.
When designing a spray jet control system, it is important to address some key questions.
 
► Press release (pdf)
► Press release (Word/pdf)
    
   A-LAS Series (A-LAS-CON1)
   L-LAS-TB-...-AL-SC Series
   SI-JET Series

   SPECTRO-1-CONLAS Series
   SPECTRO-1-FIO Series
   SPECTRO-1-FIO-JC Series

 


15 April 2021
 
  Inline spray jet control outside and inside the potentially explosive atmosphere!

Surface coatings are often applied by spraying. Ideally, objects should be coated homogeneously. Air pockets in the spraying medium, partial covering of the nozzle outlet apertures or an abrupt pressure fall in the spraying system can result in inhomogeneities in the spray cover and thus uneven coating of the workpiece. Timely recognition of deviation from the ideal spraying procedure can be performed via continual spray jet control. The spray jet control systems of the SI-JET series and the SPECTRO series from Sensor Instruments GmbH provide information about the spraying quantity, the length of interruptions and the spray jet symmetry.
Three-jet systems (SI-JET-CONLAS3 and SI-JET3) two-jet systems (SPECTRO-2) one-jet systems (SPECTRO-1) and continuous light barriers (L-LAS-TB-…-SC) are available to perform the respective task.
 
► Press release (pdf)
► Press release (Word/pdf)

  
   SI-JET Series

   SPECTRO-2 Series
   SPECTRO-1 Series
   L-LAS-TB-AL-SC Series

 


15 April 2021
 
  Inline gloss measurement of painted wooden panels.

The human eye reacts principally to differences in contrast (differences in gloss) and color. For example, if we look at freshly-installed floor boards, we immediately notice even the smallest differences in color and gloss between the individual panels. It comes therefore as no surprise that manufacturers do their very best to minimize difference in color and gloss between the individual panels. The checking process conducted to this end was previously performed using hand-held offline measuring units; Sensor Instruments GmbH has developed an inline alternative.
Our GLOSS series gloss detection sensors can measure the gloss grade of painted wooden panels in the angles 20°, 60° and 85° at a distance of 20mm, 15mm and 5mm to the surface (depending on the sensor type: GLOSS-20-20°, GLOSS-15-60°, GLOSS-5-85°).
 
► Press release (pdf)
► Press release (Word/pdf)

  
   GLOSS-20-20°, GLOSS-15-60°, GLOSS-5-85°

   GLOSS Series

 


16 February 2021
 
  The color tone is decisive: the color tone measurement of various colored fiber bundles.

The color tone of textile fibers should, as far as possible, be measured at the start of the textile dyeing process using inline measurement. The information about the actual color tone (the actual value) can be compared with the color tone target using the PLC. The difference between these two color values provides information as to whether a more or less color should be added to the color bath.
A SPECTRO-3-28-45°/0°-MSM-ANA-DL is suitable for measuring the color of the fiber strand which is fitted with a 45° illumination and detects the color under 0°. It is thus possible to avoid the great majority of direct reflection as comes from dye which is still damp during measurement. The distance between the sensor and the color strand is typically 28 mm and the detection range assumes a diameter of c. 10 mm with this clearance.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   SPECTRO-3-28-45°/0°-MSM-ANA-DL

   SPECTRO-3-MSM-ANA Series

 


8 February 2021
 
  Color differentiation of second hand clothes in the recycling process.

Different colored second hand clothes, transported on a conveyor belt, should be differentiated. At this, the orientation of the respective textile is randomly, which means randomly folded, flat or exaggerated positioned. Furthermore, the clothes will be transported serial on the conveyor belt, normally with a certain gap between the respective textiles, thus, the surface of the conveyor belt can be seen from the top side. Additionally, the speed of the conveyor belt is constant and approximately 1m/s. Once the color is detected, a special high-pressure nozzle is blowing the respective clothing item out from the conveyor belt and into a foreseen container.
For the preliminary studies a color measurement sensor type SPECTRO-3-1000-COF-d50.0-CL-MSM-DIG is used.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   SPECTRO-3-1000-COF-d50.0-CL-MSM-DIG

   SPECTRO-3-MSM-DIG Series

 


29 January 2021
 
  Micrometer-exact positioning of punching strips.

During the production of punched articles, the punching procedure requires the exact positioning of the punching strips as the processing of the punching strip is performed in a number of process steps in the punching machine. The metal band must be positioned exactly within the punching tool after every processing step (punching and bending procedure). The position notification is usually performed within a stroke procedure (0°…180°) using a through beam light barrier and assignment of the respective rotary encoder position during the signal exchange of the light barrier. Ideally, the through beam light barrier should be a fork light barrier and should be able to be integrated in the punching tool, something which requires robust sensors which can resist mechanical vibration. The light barrier should be cutting oil resistant and insensitive to soiling. Quick running punching machines under the presses running at several thousand strokes per minute require a very high switching frequency and a high degree of position-exactness.
The fork light barriers of the FIA-L series from Sensor Instruments GmbH were designed especially for this deployment. In addition to a high degree of insensitivity to extraneous light, a high level of oil resistance, a small laser spot size of 0.2mm in diameter, a low optical divergence of the red laser beam and a high position exactness of better than 5µm, the FIA-L-RL series provides a switching frequency of 25kHz.
 
► Press release (pdf)
► Press release (Word/pdf)

   
  
FIA-L-S-0,2-30/40-Q-P-RL
   FIA-L Series

 


25 January 2021
 
  Differentiating the tin side from the fire side in float glasses.

Float glasses develop their form, thickness and surface properties through the transport of the glass melt on liquid tin. The glass melt floats on the tin bath and develops a plane surface adapted to the tin bath (tin side). The glass surface facing away from the tin bath (fire side) is heated by a gas burner until a certain temperature profile develops so that the glass melt can cool gradually and thereby assume its later form.
When processing the float glass further, it is important to know where the tin side is located and where the fire side is located. Tin microinclusions can influence a number of issues such as the electrical resistance of the glass surface (the application of metal contact strips on a car rear window). It is also of decisive importance in other matters such as the application of further layers on the glass surface (e.g. nano layers) as to which side of the float glass is coated.
The SPECTRO-1-20-UVC-DIL UVC contrast sensor from Sensor Instruments GmbH permits control of the glass surface in terms of its tin or fire side.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-1-20-UCV-DIL
   SPECTRO-1 Series

 


21 January 2021  SPECTRO-M-10-MIR/(MIR1+MIR2) - Press release #4
 
  The detection of oil layers on metal surfaces: comparing the measurement procedures.

The use of oils is imperative in the forming process of metals. For example, the application of cutting oils to metal bands ensures low wear on the punching tools. Drilling oils make an essential contribution to the protection of the drilling and milling tools during chipping processes. Oils also serve to protect semi-products such as sheets and metal foils against corrosion. After further processing, it is important to remove the oil residues from the finished products as completely as possible. This task is performed by special cleaning systems, in which the metal parts are washed and blown dry.
In order to ensure that environmental specifications are maintained during the application of the oils, and to ensure that the process is economical, it is advisable to ascertain the quantity of the oil applied. Oil quantity measurement can be performed INLINE. A number of measurement procedures are available to this end and which constitute the focus here. The cleaning process can be monitored using the same sensors. The challenge is to determine even small quantities of oil residue accurately, preferably INLINE. Electrically conducting components such as copper busbars or power current lines require the lowest possible transfer resistance. A residual oil layer would pose a problem as this restricts the conductive efficiency to a considerable degree.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-M-10-MIR/(MIR1+MIR2)
   SPECTRO-M Series

 


22 December 2020  SPECTRO-M-10-MIR/(MIR1+MIR2) - Press release #3
 
  What is going on in the haze? We watch the oil even during evaporation!

Producers of blanked and flexible parts are increasingly using evaporated punching and drawing oils. Such processes need an outcome which minimizes the oil residue on the punched or formed metal parts in order to obviate the need to subject the products to a cleaning process. The question is: how much of the oil remains on the component and how long does the evaporation process take?
Our SPECTRO-M series answers this question! To this end, we applied five drops of oil (5x20µl) to a degreased steel plate and spread it over a 70mm diameter surface. The oil layer thickness at the start of the measuring procedure amounted to some 25µm. The SPECTRO-M-10-MIR/(MIR1+MIR2) sensor was then placed on the center of the oil and the measurement started: The MIR sensor was used to view two measuring windows, both of which were located in the mid-wavelength infrared light range (MIR range). One of these two wavelength range windows reacts to the presence of oil (here referred to as CH0), whilst the second measuring window (CH1) gave no reaction. This change in the two measuring windows upon the presence of oil can be used to ascertain the amount of oil within the detection range.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-M-10-MIR/(MIR1+MIR2)
   SPECTRO-M Series

 


14 December 2020  SPECTRO-M-10-MIR/(MIR1+MIR2) - Press release #2
 
  Measuring the thickness of oil layers by comparing two mid-wavelength infrared light range wavelength windows.

Those wishing to measure the layer thickness e.g. of a homogeneous layer of printing ink on paper can adopt the grammage method as an adequate approach. The grammage of a printing ink is not all that different from that of paper with a thickness of between 0.05 mm and 0.2 mm. The use of accurate scales should be able to produce a reliable result. What happens when we replace printing ink with oil and paper with a 1 mm steel sheet? We would probably come to the limits of the grammage method.
We still need a reliable method of determining the thicknesses of oil layers without too much effort. One possible solution is the fluorescence method, using UVA light to stimulate fluorescence. Secondary emissions are emitted in the visible wavelength range. The intensity of the fluorescence establishes the measure for the thickness of the respective oil layer. We should take into consideration however, that the signal strength (fluorescence) is not only dependent on the layer thickness but also the nature of the oil used and the metal surface which functions as a reflector and exerts an influence on the signal level. There are also a number of oils with only a minimal or no fluorescence effect and which cannot be measured to establish the layer thickness.
Taking the mid-wavelength infrared light range (MIR) into consideration, we see that the oils previously investigated all exhibit a significant absorption in a certain wavelength range, whilst other wavelength ranges do not respond to the presence of oil. Were we to exclude this oil-sensitive wavelength window from the MIR spectrum and then compare its absorption behavior in standardized fashion with the absorption observed in a second, oil-neural wavelength window, we have a first approximation of a proportional relationship between the thickness of the oil layer and the standardized signal.
The SPECTRO-M-10-MIR/(MIR1+MIR2) sensor if fitted with exactly this wavelength window.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-M-10-MIR/(MIR1+MIR2)
   SPECTRO-M Series

 


2 December 2020  SPECTRO-M-10-MIR/(MIR1+MIR2) - Press release #1
 
  The measurement of thin oil layers with MIR – a highly interesting matter.

The tension is rising! The users of cleaning units for metal parts – e.g. stamped parts – wait with baited breath to see what the washing sequence brings forth. Has the surface tension exceeded the threshold of 38 mN/m or has it even climbed to 44 mN/m? A metal component is generally taken to have been de-greased if one of these values (which of the two, depends on the intended application) has been exceeded. Previously, test ink was used to demonstrate the surface tension. These liquids are available in various surface tension values, usually starting with 30mN/m to 50mN/m in steps of 2mN/m (30mN/m, 32mN/m, …, 48mN/m, 50mN/m). If the test ink does not roll off the metal surface after application, the surface tension of the metal part lies above the value specified for the test ink. On the other hand, if the test ink does roll off the metal surface, the surface tension of the metal lies below the value specified for the test ink. In this way, the surface tension can be ascertained with an accuracy of 2mN/m.
What does the surface tension mean in relation to the property of the respective metal surface? De-greased metal surfaces present a surface tension above 50mN/m (ascertained with the test ink method). On the other hand, if a metal surface is covered with an oil film, (for example, through oiling the punching strip before punching), the value of the surface tension can fall under 30mN/m, depending on the thickness of the film. The test ink method is therefore capable of determining whether the metal surface is covered with an oil film, or whether it has been removed (de-greased). Even oil films of less than 1µm can be demonstrated with this method.
Experiments with various oils have shown that almost all oils have a selective absorption rate in the mid-wavelength infrared light range (MIR). Using this characteristic means that the comparison of two MIR wavelength ranges (one range is the neutral range, i.e. the wavelength range in which no noticeable absorption occurs as a result of the oil) can be used to determine the thickness of the oil layer after calibration of the SPECTRO-M-10-MIR/(MIR1+MIR2) measurement system, and in a subsequent step, to display the respective surface tension value.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-M-10-MIR/(MIR1+MIR2)
   SPECTRO-M Series

 


26 October 2020 
 
  Sustainable v. virgin!

The arrival of plastic recyclates.

A difficult birth! After standing in the shadow of virgin materials for many years, plastic recyclates have now come into their own. There are many reasons for this: whilst the complex technical procedures to which recycled plastic must be subjected rendered them uneconomic, technological improvements mean that the quality could be improved whilst reducing costs. Despite these advances, without the decision on the part of the EU to change the legal framework to effect the sustainable use of plastics, recyclates would have remained uneconomic. For example, an EU directive has established a minimum amount of plastic recyclates to be used in plastic bottles.
Despite their improved properties, plastic recyclates still do not approach the quality of virgin material. For example, color deviations in comparison to the target state are still common. Color value targets can only be reached by the targeted addition of virgin material. Determining the exact quantity of new material to be added requires color measurement of the plastic recyclate.
Color measurement is performed INLINE. The high ambient temperature means that color measurement system is realized as a fiber optic system (KL-D-0°/45°-85-1200-A3.0-VIS) and works in accordance with the 0°/45° color measurement procedure. When using a white light spot diameter of 25 mm, an average is ascertained optically over a large number of pellets, so that the evaluation unit connected to the fiber optic front end SPECTRO-3-FIO-MSM-ANA-DLcan determine a precise color value (L*a*b* or xyY). The color values are transmitted to the control of the metering unit and depending on the color deviation from the target, the metering unit will add virgin material as required.
 
► Press release (pdf)
► Press release (Word/pdf)

   
   S
PECTRO-3-FIO-MSM-ANA-DL + 
    KL-D-0°/45°-85-1200-A3.0-VIS
   SPECTRO-3-MSM-ANA Series

 


31 July 2020
 
  No stress with stretch!

Measuring the thickness of thin and transparent plastic films

It is important to be able to measure the thickness of stretch films after production, including after the stretching procedure. The SPECTRO-MIR-10 measurement system enables fast and precise inline and offline measurement and is not affected by extraneous light.
The Windows®-Software SPECTRO MIR Scope V1.0 can be used to calibrate the measurement system to the respective film type. In addition to the parametrization software, the monitoring software SPECTRO MIR Monitoring V1.0 is available, which is used to save measurement data and display it graphically and numerically, including trends.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    SPECTRO-MIR-10

    SPECTRO-MIR Series
 


30 June 2020
 
  Gaps in Parquet Flooring

Dear manufacturers of vinyl flooring, don't worry, we will find the gap!

From the range of RED series edge detectors the RED-50-L and RED-110-L sensors are especially suited for detecting gaps, i.e. in this application the distance of two parquet panels. These edge detectors reliably detect gaps starting from a depth and width of approx. 0.05mm.
With the supplied software the laser edge detector can be adapted to different surfaces: From dark to bright, and from matt to glossy. With a maximum scan frequency of typ. 85kHz the sensor also is excellently suited for high-speed object handling.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    RED-110-L

    RED Series
 


22 June 2020
 
  Perfect Gloss for Metal Plates!

When metal plates are painted, both their color and their gloss factor must be measured after the painting process. Gloss measurement is performed inline and immediately after the painting process to allow a quick response to possible deviations of the gloss factor from the respective setpoint value.
A gloss sensor of the GLOSS series (GLOSS-15-60°) that measures the gloss factor at a distance of 15mm from the object is used for this application.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    GLOSS-15-60°

    GLOSS Series
 


9 June 2020
 
  Color Measurement of Painted Metal Plates

The color of metal plates should be measured immediately after the painting process. It must be taken into account here that there are both high-gloss surfaces and very dull surfaces, and that the color value must be determined irrespective of the gloss factor. Furthermore, measurement must be performed inline, on the one hand to satisfy the requirements of 100% inspection, and on the other hand to be able to quickly respond to a possible color drift.
The recommended color sensor for this application is a sensor of the SPECTRO-3 series operating with the 45°/0° method (SPECTRO-3-28-45°/0°-MSM-ANA-DL).
 
► Press release (pdf)
► Press release (Word/pdf)
 

    SPECTRO-3-28-45°/0°-MSM-ANA-DL

    SPECTRO-3-MSM-ANA Series
 


26 May 2020
 
  Proper Gloss for Decor Foils

Apart from plastic foils, paper-based foils are more and more used both in the furniture industry and in the flooring sector. Nowadays decor papers for example are available for kitchens, furniture elements, and laminate flooring. However, one requirement applies both to plastic and paper-based decor foils: Constant quality and brilliant appearance must be ensured during production.
The inline gloss sensor GLOSS-15-60° that continuously measures the gloss factor of decor foils definitely makes a decisive contribution to achieving this.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    GLOSS-15-60°

    GLOSS Series
 


14 May 2020
 
  No Problems Counting Fan Blades

In the production of radial and axial fans the checking of the correct frequency response depending on the applied DC voltage is one of the final steps. The easiest method for measuring the frequency is to use a transmitted-light sensor (for example a D-LAS2-d1.0-T + D-LAS2-Q-d1.0-R-HS, featuring a switching frequency of typ. 300kHz). In many cases, however, the fan blades of the respective fan version only can be accessed from one side for testing, so that a reflected-light sensor must be used as an alternative.
The edge detectors of the RED series (RED-50-L or RED-110-L) are excellently suited for such applications.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    RED-50-L, RED-110-L

    RED Series  
 


7 May 2020
 
  Optical INLINE Sensors in Plastics Production and Recycling

A range of initiatives and technical solutions have been developed to improve the sorting of plastics and thereby increasing the recycling quota. A number of procedures use near infra-red procedures to differentiate between the base materials of plastics; others apply codes to enable the sorting and traceability of plastic packaging.
Sensor Instruments and GABRIEL-CHEMIE have combined to develop a new technology which integrates a machine-readable signature in a range of plastic materials.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    Marking and precise authenthication of plastic
    products

    Taggant Technology TAGTEC  
 


7 April 2020
 
  Counting Folds at Flex-Pipe

In the production of aluminium flex-pipes the decisive factor is not really the measured length of the flex-pipes but rather the number of existing folds, because due to the material's "accordion effect" the actual length cannot be accurately measured. In this application an edge detector of the RED series (e.g. RED-50-L or RED-110-L) is used to count the folds. During edge counting the aluminium flex-pipe is moved along the laser sensor. The sensor provides a digital output signal for every edge.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    RED-50-L, RED-110-L

    RED Series  
 


23 March 2020
 
  Frequency of Compressor Wheels

The task is to measure the frequency of compressor wheels that are used in turbochargers. These wheels may reach speeds of up to 300,000 revolutions per minute. Usually these compressor wheels have about 10 blades and are made of milled aluminum. If the frequency of these compressor wheels should be determined optically it must be taken into consideration that every blade causes a signal change - which means that up to 3,000,000 switching processes must be expected per minute, resulting in a frequency of approx. 50 kHz (of the blades). Even an edge detector of type RED-50-P or RED-110-P with its maximum scan frequency of typ. 100 kHz will work up quite a "sweat" here.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    RED-50-P, RED-110-P

    RED Series  
 


9 March 2020
 
  Sandpaper Grain Size Measured as Gloss

In the production of sandpaper it must be ensured that the grain size of the abrasive material (e.g. aluminum oxide or silicon carbide) always lies within the permitted tolerance range. Previously performed laboratory tests showed that the gloss factor of the sandpaper surface correlates quite well with the grain size: The smaller the grain size, the higher the corresponding gloss factor.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    GLOSS-5-85°, GLOSS-15-60°

    GLOSS Series  
 


4 March 2020
 
  Do not overstep the red line

Plastic wires with various thicknesses, colors, forms and surface properties are used for a range of different purposes. Examples include tennis rackets with polyester monofilaments; the triangular profile of the racket strings produces greater spin. Flat material is most suitable for the monofilaments used in the production of large plastic bags (big bags). Transport filter belts used in the wet areas of paper production are made of round plastic monofilaments; the plastic wires used in toothbrushes have abrasive material added to them. Plastic monofilaments are now also used in 3-D printing procedures. This process also uses round wires with various diameters. In addition to the form, color consistency is decisive, as color deviations in plastics are often interpreted as quality inconsistencies. Woven products such as plastic sieves, big bags and tennis rackets are especially prone to this phenomenon as even very small color nuances (usually from a color difference of dE=1) are perceptible. Manufacturers need to inspect the color of the monofilaments during production, i.e. inline. The object size, form and gloss of the plastic monofilaments have previously impeded the use of inline color measuring devices, especially as a color deviation of > dE = 0.7 needs to be detected reliably.
 
► Press release (pdf)
► Press release (Word/pdf)
 

    SPECTRO-3-12-DIF-MSM-ANA-DL

    SPECTRO-3-MSM-ANA Series  
 


27 February 2020
 
  Wire Counting at Stranding Machines

In the production of cables or of high-voltage lines the individual insulated conductors or aluminium wires must be stranded, which in practice is performed by stranding machines. In this process the individual conductors or wires are wound around a core wire. The core wire with relative ease can be inspected for possible wire breaks by using a suitable laser light barrier operating with the transmitted-light method.
An inspection of the outer conductors or outer wires can be realised with a correspondingly adapted edge detector of the RED series (RED-110-P-F60).
 
► Press release (pdf)
► Press release (Word/pdf)
 

    RED-110-P-F60

    RED Series  
 


4 February 2020
 
  Not always down!

Some aspects of technology very well can be compared to real life: The direction is not always up or down. After a "down" there often is an "up" again, and this also applies to edges: As a rule a rising edge is followed by a falling edge, and vice versa. 
In the series of edge detectors the RED-60-CLS-L and the RED-60-CLS-P now allow the detection of rising and falling edges. 
 
► Press release
► Press release (Word/pdf)
 

    RED-60-CLS-L, RED-60-CLS-P

    RED Series  
 


7 November 2019
 
  Perfect Light for the Car Interior

Light Guide Rods
More and more cars today are equipped with light guide rods in their interior, the so-called ambiance area, for example in door panels, dashboard, center console, and roof lining. Through semi-transparent flat strips these light guide rods guide the light into the interior of the car. Any inhomogeneity in the light guide rod would influence the scattering behaviour of the output light. When driving in the dark, a passenger in the car interior would notice this as a bright or dark position along the light strip and would be disturbed by it.
 
► Press release
► Press release (Word/pdf)
 

    SPECTRO-3-FIO-ANA-LEDCON-HA

    SPECTRO-3-ANA Series  
 


14 October 2019
 
  Tracking the Invisible

Inline Detectors Offer a new Method of Component Marking
In the course of a comprehensive digitisation of industrial production and processes (keyword: Industry 4.0) a new method of marking manufactured components now offers previously undreamed-of possibilities. By way of an individual marking (a random distribution of fluorescent particles on the object surface or in the object matrix) a virtual key can be generated and can be used to save product-relevant data e.g. on the server (or in the cloud). Due to the random distribution of these fluorescent particles this "star code" represents a kind of "digital fingerprint". Already a few particles in the viewing field are sufficient to guarantee safe and robust recognition, with little required memory space per code.
 
► Press release
► Press release (Word/pdf)
 

    LUMI-STAR-MOBILE and LUMI-STAR-INLINE

    LUMI Series  
 


29 April 2019
 
  Perfect Gloss Measurement!

Hand-held units for measuring the gloss level have been successfully used in the industry for years, and three viewing angles have been established as a standard: 20°, 60° and 85° measured from the vertical axis. The paper industry is an exception here and primarily uses viewing angles of 45° and 75°. The gloss level is determined by measuring the direct reflection at the object surface to be inspected.
 
► Press release
 

    Inline gloss meters

    GLOSS Series  
 


22 March 2019
 
  Choose the Right Side

95% of all the industrially produced flat glass today is made using the float glass process. In this process, molten glass is continuously fed into a bath of molten tin. Due to its lower specific weight the molten glass floats on the smooth tin surface, and on a long tin bath forms a uniformly thick and extremely smooth film. The glass side that faces the molten tin is slightly contaminated with tin, which has corresponding effects on subsequent float glass processing steps such as coating of the glass surface.
For the further processing of float glass it is therefore important that the surface that is contaminated by the tin bath can be distinguished from the so-called fire side (fire polishing, during float glass production the glass side facing away from the molten tin is heated).
 
► Press release
 

    Contrast sensor
 
    SPECTRO-1-FIO-UVC/UVC   
 


20 February 2019
 
  Problems With Folds?

In the production of oil and air filters for the automobile industry these filters must reach the required throughput rate, which is achieved by folding the filter material so that it provides a large filter surface on a minimum of space. Depending on the filter type there are differences in the fold depth and in the numbers of folds.
 
► Press release
 
      Laser edge detector 
    RED-110-L   
 


7 February 2019
 
  Welding Seam Detection With Edge Detectors

For the detection of welding seams, contrast or color sensors would seem to be the proper solution, because in most cases the welding seam optically shows a clear difference from the surrounding product surface. In everyday practice, however, it turns out that these methods involve frequent readjustment and reparameterisation.
 
► Press release
 
 
      Laser edge detector 
    RED-110-L   
 


4 February 2019
 
  Connected to the Future!

Up to now it may have been sufficient for a sensor manufacturer to provide systems with digital outputs, a 0V to +10V analog voltage output, and a 4mA to 20mA analog current output. In the foreseeable future, however, communication between sensors and programmable logic controllers (PLCs) primarily will be performed in digital serial form with a correspondingly high data rate. The future belongs to the so-called Industrial Ethernet.
 
► Press release 
 
      RS232-to-PROFINET® converter and
    RS232-to-EtherCAT® converter  
 

 
21 January 2019 
 
  Detection of Transparent Edges

Conventional detectors particularly reach their limits when they have to detect and count stacked transparent objects such as plastic drinking cups of plastic caps. Especially in the process of packaging, however, it is of great importance to place the exact number of objects in a packaging unit. Such problems now can be solved with the RED series (a RED-110-L was used for this application).
 
► Press release
 
 
      Laser edge detector 
    RED-110-L   
 


26 November 2018
 
  A Hazy Problem?

At first everything seemed to be quite clear, just another measurement task that we surely would manage without any problems with one of our GLOSS series sensors. According to the descriptions provided by the customer it seemed to be gloss grade measuring task, and at the beginning the only question seemed to be at which angle measurement should be performed: 20°, 60° or 85° from the vertical?
 
► Press release

              
     Gloss sensor 
   GLAST-85-30°/30°-DIF-1.0/1.0
 


19 November 2018

  Perfect Copy Counting

When cartons, magazines, or single sheets are packed, it must be ensured that each package has the correct number of items. In most cases such material is transported in shingled form before, as with magazines, newspapers or advertising prints, it is packed by means of a compensating stacker. Depending on the thickness of the individual copies and on their transport speed (up to 10m/s) the shingled stream may have differing heights in this process. 

► Press release
 
     Laser edge detector
   RED-110-L



19 November 2018

  Clear Strategy or Plain Guessing?

In the last years the spray nozzles at windscreens have seen quite some development. The jet now comes as a fan jet or spot jet. A homogeneous spray mist application onto the intended angle range is now accurately guaranteed with fan jets, as is the point-shaped jet application on the front cameras by means of exactly directed and hardly diverging spot jets.

► Press release 
     Laser line through-beam sensor
   L-LAS-TB-100-AL-SC



9 November 2018

  INLINE Color Measurement of Paint Through a 15mm Thick Inspection Glass

Usually the color checking of color paint during production primarily is done in a laboratory. A paint sample is taken, and the color of this sample is then checked by way of a thin paint layer in dry condition. This process of course takes some time, time in which paint production might run out of the permissible tolerances and thus might require time-consuming and expensive follow-up treatment.

► Press release
 
     Color measurement sensor
   SPECTRO-3-28-45°/0°-MSM-ANA-DL



22 October 2018

  Accurate High-Speed Counting of Stacked Plastic Caps

Especially the counting of transparent, stacked plastic caps, as they for example frequently are used in the packing industry, usually is a highly problematic application because on the one hand the edges of individual caps are not always exactly aligned, and on the other hand copy counters that work with the reflected-light principle do not provide a reliable counting result especially with transparent objects. 

► Press release
 
     Laser through-beam sensor
   
A-LAS-N-F16-9.5x0.8-150/80-C-2m with
   electronic control unit SPECTRO-1-CONLAS


NEWS

Participation at trade fairs:

MECSPE 2021
23-25 November 2021
BolognaFiere (Italy)

FOOD TECHNOLOGY 2021
1-2 December 2021
Brabanthallen - 's-Hertogenbosch (Netherlands)

all about automation Friedrichshafen 2022
8-9 March 2022
Messe Friedrichshafen (Germany)


more...


New applications:


Frontside-backside differentiation of coated aluminum foils
(N° 792)
Color control of preforms
(N° 793)
Presence control of a very thin oil layer
(N° 794)

more...


New press releases:

Inline spray jet control outside and inside the potentially explosive atmosphere!
(SI-JET series, SPECTRO-2 series, SPECTRO-1 series, L-LAS-TB-AL-SC
 series)
Inline gloss measurement of painted wooden panels
(GLOSS series)

more...


What is ...
... surface tension?
... oil evaporation?
... oil layer thickness
    measurement?

more...


New videos:

"Danke für die Optoelektronik"
(Thanks for the optoelectronics)
"Bewirb Dich jetzt!"
(Apply now!)

more...


Software news:

SPECTRO3-MSM-DIG-Scope V1.5 (2021.10.20)
V1.5.2

more...


Trade fairs:

all about automation 2022
8 & 9 March 2022
Messe Friedrichshafen


more...




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