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The news of MICRO-EPSILON

Thickness measurement of brake discs for test benches and road tests

October 19, 2017

Thickness measurements
With the capaNCDT DTV, Micro-Epsilon has developed a thickness measurement system for brake discs that is used for the detection of Disc Thickness Variation. Extremely robust multi-channel sensors and controllers with a comprehensive software package, as well as a carry case for mobile use, cater for various measurement tasks.
 
The capaNCDT DTV capacitive displacement measurement system measures the thickness of brake discs from both sides, enabling the exact determination of the so-called Disc Thickness Variation. This factor is very important because in order to achieve maximum efficiency of the braking system, the disc must have an even thickness. Unevenness, runout or abrasion on the friction surface of the disc cause the brake pads to lose contact with the rotating disc which in turn reduces the braking effect.
 
Capacitive displacement sensors enable thickness measurements to be performed on a non-contact basis. While the brake disc rotates, the thickness deviation is determined via the circumference of the entire disc. Using several sensors in pairs also enables multi-track thickness measurements.
 
Due to its robust construction, the innovative capaNCDT DTV four-channel sensor is suitable for harsh ambient conditions in test benches or road tests. In its compact housing, four capacitive sensors detect the measurement values with each operating in standalone mode. A special ceramic substrate protects the sensors from mechanical and
 
 
 
thermal loads, providing high temperature stability. In order to enable accurate measurements with simplified mounting, the sensors are available as mirror-inverted arrangements that can be mounted on opposite sides of the brake disc. Combined with the capaNCDT 6220 controller, the four sensor channels can be processed synchronously with dynamic measurements up to 5kHz and digital outputs via Ethernet or EtherCAT or as analog signal.
 
Mobile measurement tasks such as the verification of warranty claims or quality assurance purposes can be performed using the measurement carry case, which provides a complete package. This case is particularly useful for brake disc manufacturers or for the automotive industry and its suppliers. It contains a dual-channel controller, two sensors with cable, a bracket kit and the corresponding software license.
 
The software enables automatic compensation for perforated brake discs, automatic and manual rotation detection via the peak-to-peak evaluation, as well as printing and storing of measured data.
Thickness measurement of brake discs for test benches and road tests
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Innovative Blue Laser Technology with Patent

July 31, 2017

Laser position sensors
Laser profile scanners and laser triangulation sensors equipped with a blue-laser diode offer numerous advantages over red-diode lasers. For decades, sensor specialist Micro-Epsilon has played a leading role in measurement applications based on Blue Laser Technology and has a worldwide applied-for patent on these applications, particularly on red-hot glowing and (semi-) transparent objects.
 
Instead of a red laser line, the Blue Laser diode generates a blue-violet laser beam with a wavelength of 405nm. The sharper focus enables a sharper projection of the laser beam and therefore increased accuracy. In numerous measurement tasks, the technology already patented in several countries by Micro-Epsilon offers decisive advantages compared to red-diode laser sensors. The sensors are equipped with new high-performance lenses, new intelligent laser control and innovative evaluation algorithms. Unlike the long-wave red laser, the short-wave, blue-violet laser light hardly penetrates the measurement object. Particularly with organic materials such as wood or semi-transparent objects such as adhesive beads or plastic profiles, this effect becomes distinctively visible. The blue laser point or blue laser line is sharply imaged onto the surface and projected onto the sensor element, providing stable and precise measurement results.
 
Micro-Epsilon Blue Laser Technology also has important advantages on red-hot glowing objects. The long-wave radiation emitted by red-hot glowing objects dazzles the receiving elements of laser sensors that operate using red laser light. Blue Laser Sensors are equipped with optical elements that cannot be influenced by this radiation, which therefore enables stable distance and profile measurements of slabs, cast parts and glowing brake disks. Measuring the deformation of brake disks under load while braking is an ideal task for the optoNCDT laser sensor. Due to the short wavelength of the blue-violet laser employed, the light emitted from the thermocouple does not dazzle the sensor, as the intrinsic long-wavelength incandescent radiation is a long way off the 405-nm wavelength of the blue-violet laser, and it is effectively blocked by the high quality interference filters used.
Innovative Blue Laser Technology with Patent
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New laser sensor provides high performance

July 25, 2017

Laser position sensors
The compact optoNCDT 1750 laser sensor designed for displacement and distance measurements offers new features combined with robustness and reliability. Based on an innovative web interface, the new laser sensor stands out due to its ease of use and intuitive commissioning using presets for different surface types and colors.
 
optoNCDT 1750 laser sensors measure displacement, distance and position in numerous industries such as automation technology, electronics production, automotive and machine building. The compact, industrial and universal model comes with numerous new features that provide precision measurements based on a high measuring rate. The laser-optical measurement system operates almost regardless of any material and color due to the A-RTSC surface compensation feature. The new web interface simplifies set up and configuration without requiring any additional operating software. Presets are available for numerous materials such as metals, plastics and organic materials. This enables rapid, straightforward and optimized sensor operation. The measuring rate is continuously adjustable up to 7.5kHz and can be individually adapted to the respective measurement task. Peak selection and suppression of interference peaks enable reliable measurements on oily components in the construction of engines and transmissions as well as on coated materials, measurement objects behind glass or on film-sealed components. Data output is analog or digital via an RS422 interface. Furthermore, the optoNCDT 1750 provides two switching outputs and one output to control different functions.
 
The combination of enhanced performance and a wide range of features result in a sensor that takes a leading role in its class. Due to its compact design with integral controller, the optoNCDT 1750 is extremely versatile in terms of its potential fields of application, while simplifying installation into restricted spaces.
New laser sensor provides high performance
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Optimized controller for inductive displacement sensors

July 25, 2017

Inductive movement sensors
Due to its aluminum housing, the new induSENSOR MSC7401 controller for inductive gages and displacement sensors of the LVDT and LDR series is extremely robust, while also boasting new electronics and a favorable price/performance ratio.
 
For decades, inductive displacement sensors from Micro-Epsilon have represented the highest levels of precision and innovation. The new induSENSOR MSC7401 controller enables the operation of LVDT and LDR gages and displacement sensors. Providing increased performance, the single-channel electronics protected by a robust aluminum housing (IP67) is equipped with a current and voltage output. Furthermore, the new controller stands out due to its ease of use and optimized price/performance ratio. This new controller opens up numerous fields of application in automation technologies and machine building.
 
Micro-Epsilon offers a wide range of inductive sensors for displacement and position measurements. induSENSOR displacement sensors from Micro-Epsilon are used extensively in applications for automated processes, quality assurance, test rigs as well as in hydraulic and pneumatic cylinders. The advantages of the inductive displacement sensors include ruggedness, reliability under harsh conditions, high signal quality and temperature stability. They are available in five different series which serve as basic models for customer-specific requirements.
 
The scope of supply ranges from conventional LVDT sensors and inductive sensors with integrated controller to customer-specific high-volume versions. LVDT gages for example have a plunger which moves freely in the sensor housing. The plunger is joined to the object by a thread to transfer the movement of the measurement object. The measurement process in the sensor takes place without contact and is therefore wear-free. Particularly intended for applications requiring high quantities, the displacement sensors are mainly used to measure and monitor movements, displacements, positions, strokes, deflections, dislocations, etc. in vehicles, machines and systems.
 
The specific sensor configuration of the LDR series is characterized by its short, compact design and small diameter. LDR sensors from Micro-Epsilon have a plunger and can be used in ambient temperatures up to 160 °C. These low cost LDR sensors are particularly suitable for high volume installations in restricted spaces in industrial environments.
Optimized controller for inductive displacement sensors
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New magneto-inductive displacement sensors

July 25, 2017

Magnetic position sensors 
The latest models in the magneto-inductive range of displacement sensors stand out due to their robust design combined with state-of-the-art sensor technology. The sensor design ensures its long term reliability. Furthermore, the new models offer other advantages due to their extremely compact design along with a favorable price/performance ratio for high volume applications.
 
Magneto-inductive mainSENSOR displacement sensors from Micro-Epsilon have a much larger measuring range than conventional magnetic field sensors. Compared to inductive sensors, the magneto-inductive measurement system offers improved sensitivity and a linear output signal.
 
Specially designed for applications in hydraulic cylinders using a clamp fastener, the new MDS-40-D18-SA sensors are integrated into a robust stainless steel housing. They are equipped with state-of-the-art technology for high volume industrial applications based on an optimized price/performance ratio.
 
Another new product is the magneto-inductive MDS-35-M12-SA-HT sensor which is also housed in robust stainless steel but is specially designed for high ambient temperatures up to 120 °C. These sensors are available either with integrated cable or with a connector.
 
In addition, the magneto-inductive measuring technique is wear- and maintenance-free. As well as for displacement and distance measurements, these sensors are also used in special applications such as rotational speed measurement of e.g. shafts and large gear wheels.
New magneto-inductive displacement sensors
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Fast, precise thickness measurement in the glass industry

July 25, 2017

Thickness measurements
The confocal chromatic confocalDT 2421 and 2422 controllers combine precision and high speeds in distance and thickness measurements on various surfaces. The new dual-channel model is especially suitable for the glass industry.
                 
As well as non-contact distance measurements on diffuse and reflective surfaces, the confocal measuring principle enables thickness measurements of transparent materials. Particularly for measurement tasks in the glass industry where typically high throughput rates occur, the new confocalDT 2421 and 2422 confocal controllers are ideal. Therefore, it is possible to perform multi-track measurements on flat glass, two-sided thickness measurements and multipoint thickness measurements on container glass using only a single controller.
 
In container glass production, wall thickness and roundness of the bottles are crucial quality features. This is why these parameters must be 100 % inspected. Any faulty containers are immediately rejected and returned to the glass melt.
Due to high processing speeds and in order to prevent the bottles from being damaged, a fast, non-contact measurement procedure is required. The confocal chromatic confocalDT 2422 dual-channel measurement system from Micro-Epsilon is ideally suited to this measurement task.
 
The system measures synchronously on two points. Data is output in real time via an EtherCAT interface. The thickness calibration feature enables precise thickness measurements across the entire measuring range of the sensor. Automatic exposure control allows stable measurements regardless of the glass color.
 
In contrast to systems using an oscillating lens, confocalDT is entirely wear-free. The sensors are designed for passive measurements and do not need any electrical components. They do not give off heat, which makes them suitable for use in sensitive environments. Due to a user-friendly web interface, the entire configuration process of controller and sensors is carried out without using any additional software.
 
As well as in the glass industry, the systems can also be used when measuring oscillating metal sheets, for quality assurance purposes in mobile phone production and in OEM applications.
Fast, precise thickness measurement in the glass industry
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optoNCDT 2300-2DR laser sensor combines speed and precision

May 15, 2017

Laser position sensors
The new optoNCDT 2300-2DR uses blue laser light and is specially designed for displacement and distance measurements on directly reflecting surfaces. On reflective and shiny surfaces, the sensor operates at high speed and provides maximum precision in the nanometer range. In addition, the sensor stands out due to its unique compactness.
 
The optoNCDT 2300-2DR laser sensor is especially suitable for reflective and shiny targets. The sensor is for example used in thickness measurements of flat glass, distance measurements on annealed glass and assembly monitoring of extremely small parts. The measuring rate can be set up to 49kHz which is why the sensor is ideally suitable for process monitoring tasks. While operating with the Advanced Real-Time-Surface-Compensation (A-RTSC), the sensor enables a precise real-time surface compensation of different surface types. Data output is via Ethernet, RS422 or EtherCAT. If the sensor is operated with the CSP2008 universal controller, an analog output is available and the measurement values of material thickness and width can be synchronously acquired and evaluated.
 
The sensor is based on a parallel installation to the measurement object. The blue laser light is directly reflected onto the receiving optics by the measurement object. Unlike red laser light, the blue laser light does not penetrate the measurement object. A sharp point is projected onto the surface, which enables a stable signal on the receiver element. Therefore, the sensor is able to measure to nanometer resolution. In addition, the extremely small laser spot size allows the sensor to detect very small objects. In addition to its high precision sensor technology, the size of the sensor makes the new optoNCDT 2300-2DR unique. In this sensor class, it is the only laser sensor worldwide whose entire electronics is integrated in a compact housing.
 
The optoNCDT 2300-2DR sensor is based on the principle of optical triangulation. A visible, modulated light spot is projected onto the target surface. The receiving optics produces the direct proportion of the light spot, in dependency of the distance, onto a CCD element with spatial resolution. A digital signal processer in the sensor calculates the distances between the light spot on the target and the sensor from the output signal of the CCD element. The distance value is linearized and output via an analog or digital interface.
optoNCDT 2300-2DR laser sensor combines speed and precision
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Non-contact temperature measurement of plastic film

June 27, 2016

Temperature sensors
The new thermoMETER CTP-3 infrared pyrometer enables the non-contact temperature measurement of thin polypropylene, polyethylene and polystyrene film. It operates at a wavelength of 3.43µm which is especially suitable for these types of film.
 
The range of infrared temperature sensors from Micro-Epsilon has been extended with the new thermoMETER CTP-3 pyrometer, which is used for the temperature measurement of thin film, whilst offering an excellent price/performance ratio. The temperature of polypropylene, polyethylene and polystyrene film can therefore be detected reliably. The thermoMETER pyrometers measure on a non-contact basis on almost all materials, as the spectral sensitivity in the short-wavelength range is covered.
 
The wavelength of 3.43µm at which the thermoMETER CTP-3 operates is perfectly suited to the above-mentioned film types. For pyrometers operating at other spectral ranges, these films appear transparent, making temperature measurement of the film impossible. With other film types such as polyethersulfone or polyurethane, the thermoMETER CTP-7 can be used as its spectral range is adapted to these materials.
 
The temperature range of the thermoMETER CTP-3 extends from 50°C to 400°C. The pyrometer provides stables measurement values in ambient temperatures up to 75°C. It is available with either analogue or digital outputs.
 
High accuracy and resolution are the key characteristics of all thermoMETER sensors. Particularly with temperature-critical applications, IR sensors from Micro-Epsilon are the preferred choice in order to achieve reliable measurements.
Non-contact temperature measurement of plastic film
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New: robot-guided defect detection on reflecting surfaces

June 26, 2016

Other measuring systems
reflectCONTROL Automation is designed specifically to meet the high quality requirements in production and reliably detects smallest defects on shiny surfaces. reflectCONTROL Automation is used for high speed inspection of shiny and painted parts, e.g. car attachments. The sensor is mounted on a robot and is therefore also able to inspect parts with complex geometries.
 
In many areas, ever-increasing requirements are being placed on the quality and appearance of surfaces. Particularly with reflecting surfaces, faultless, high quality production is expected. The parts are often subjected to manual inspection, which can lead to defects being missed due to tiredness of the inspectors. The reflectCONTROL Automation system is designed for automatic surface inspection of components whose dimensions require several measuring positions.
 
The system projects a striped pattern onto the measurement object. Defects on the surface cause deviations from the striped pattern which are recorded by cameras and evaluated by software. The compact deflectometry sensor, which consists of a monitor for the striped pattern projection, as well as up to two cameras, is guided over the measurement object by a robot. This enables an easy, fast and reliable 3D inspection. Using the 3D model (CAD), the robot program is created. The robot guides the sensor over the relevant surfaces and inspects the surface. The defects found are then evaluated and displayed in the 3D model.
New: robot-guided defect detection on reflecting surfaces
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Worldwide fastest confocal chromatic controller

June 26, 2016

Other travel sensors
Providing a measuring rate of 70kHz, the confocalDT 2471 HS high speed controller is currently the worldwide fastest confocal chromatic controller. The controller is used for fast distance and thickness measurements of highly reflecting surfaces.
 
The controller offers more powerful measurement characteristics, enhanced optical components and operates without external light source. Compared with a Xenon light source, the integrated light source is more durable, resulting in reduced maintenance and purchase costs. An active exposure time regulation feature allows different surface types to be compensated for quickly and precisely even with dynamic processes.
 
Two different controller versions are available: the standard version and a multi-peak version. The latter enables one-sided thickness measurement of transparent measurement objects with up to five layers. The confocalDT 2471 HS is compatible with all sensor types of the IFS series. Data output is via Ethernet, EtherCAT, RS422 or analogue output. The configuration of the controller and the sensors is performed without additional software using a user-friendly web interface. Materials are stored in an expandable materials database.
 
The controller is primarily used for high speed measurement and monitoring tasks in the glass and electronics industry.
Worldwide fastest confocal chromatic controller
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Eddy current sensors provide a

June 26, 2016

Other travel sensors
Eddy current sensors from Micro-Epsilon are extremely powerful and robust. Even with pressure, dirt and oil, they "feel at home" and provide fast, high precision measurements. The sensors are used for measuring displacement, distance, position, oscillation and vibration.
 
The compact eddyNCDT 3001 eddy current sensor with integrated controller, for example, monitors the oil gap in hydrostatic bearings. These bearing systems are used in many plants such as stone mills or telescopic installations. These bearing systems are continuously supplied with liquid lubricant via an external pressure supply. The lubricant is pressed between the bearing surfaces, which are therefore continuously separated from one another by a thin lubricant film. The bearing surfaces are not exposed to any friction and hence operate wear-free. Any disturbances in the hydraulics (e.g. pressure drops) can have disastrous consequences, which could result in damage to the bearings and ultimately system failure, causing high maintenance and repair costs. The eddyNCDT 3001 eddy current sensors are perfectly suited to the reliable monitoring of the oil gap in hydrostatic bearings. As the sensor is resistant to oil and water splash, as well as high temperatures, in combination with its compact design, these sensors are ideal for harsh industrial environments.
 
As a specialist in the field of high precision distance measurement, Micro-Epsilon uses active temperature compensation with eddy current systems. The eddyNCDT 3005 model is a compact, robust sensor system that is also temperature-compensated and can operate in temperatures from -30°C to +180°C. Even with high temperatures or temperature fluctuations prevalent in the production environment, these sensors achieve extraordinary measurement accuracy, despite the fact that temperature is an essential factor that influences measurement results. Controller, cable and sensor are pressure-resistant up to 10 bar. Compact, robust sensor designs and high measurement accuracy, combined with a particularly favourable price/performance ratio, make these sensors suitable for high volume applications and for integration into plant, equipment and machinery.
Eddy current sensors provide a
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confocalDT brings light into darkness

August 26, 2015

Other travel sensors

The new confocalDT IFC2461 extends the confocal chromatic controller range. It stands out due to higher measuring rates up to 25kHz. Particularly with dark targets or when measuring the thickness of transparent targets, the advantages of the enhanced, optical components become clear.

Enhanced, optical components, more powerful measurement characteristics, no external light source – in short, these are the three key attributes that accurately describe the new confocalDT IFC2461 confocal chromatic controller. The range of controllers for confocal sensors has been extended by a further model. Not only does the confocalDT IFC2461 provide higher measuring rates up to 25kHz for faster measurements and control of dynamic processes, but also delivers stable measurement results. Compared with a Xenon light source, the integrated light source is more durable, resulting in reduced maintenance and purchase costs. An active exposure time regulation feature allows different surface types to be measured.

Two different controller versions are available: the standard version and a multi-peak version. The latter provides six peaks, enabling one-sided thickness measurement of up to five layers. The IFC2461 is primarily used in the production of glass, bottles and displays, or when high speed inline processes are involved.

The confocal chromatic sensors are used for distance measurement, as well as for measuring the thickness of transparent materials. The high end controllers achieve measuring rates of 10 kHz (IFC2451), 25 kHz (IFC2461) or 70 kHz using an external Xenon light source (IFC2471) and offer EtherCAT, Ethernet, RS422 and Analogue Out. Optical signals are transferred between sensor and controller via an optical fibre.

confocalDT brings light into darkness
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Remotely operated vehicle for pipeline inspection

August 03, 2015

Other sensors

Equipped with a scanCONTROL laser scanner from Micro-Epsilon, a special vehicle inspects the inside of a pipeline for deformations and cracks. This mobile device is used in harsh environmental conditions and high ambient temperatures, e.g. in the middle of the desert and is ideally suited to automatic inspection and recording of measured data.

To meet safety regulations, the inspection of the internal parts of pipelines is mandatory, as any deformations can lead to cracks, which could result in complete pipe failure or, in the worst case, to personal injury. The critical factor is the weld seam. DEKRA developed a fully automatic vehicle that solves this task by using a combination of visual inspection and geometrical measurements performed by a scanCONTROL laser scanner from Micro-Epsilon.

To make the vehicle suitable for different types of pipeline in all regions of the world, it is protected against sand, dust and ambient temperatures up to 100 °C. In combination with the fifth wheel on the top of the vehicle pressed against the top of the pipeline, the ROV can travel up a high gradient of around +/- 45°. All data can be output for further use or, if desired, trigger an alarm as soon as an anomaly is found in the geometry (roundness, defects, welds, etc.).

Remotely operated vehicle for pipeline inspection
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Precision displacement, distance and position measurement

August 03, 2015

Current sensors

The eddyNCDT 3005 from Micro-Epsilon is a new, powerful eddy current measurement system for fast, high precision displacement measurements. Due to its pressure-resistant, thermally stable and compact design, the eddyNCDT 3005 is ideal for machine integration.

Non-contact eddy current sensors from Micro-Epsilon are designed for extremely high precision measurement of displacement, distance, position, oscillation and vibration, etc. to micrometer accuracies. Pressure, dirt, oil or high temperatures have almost no influence on measurement precision. This eddy current measurement system is particularly suitable for harsh industrial environments. As the sensor and compact controller of the eddyNCDT 3005 are temperature-compensated, outstandingly high measurement accuracies can be achieved even in high or fluctuating temperatures, e.g. in automotive production. The sensors are designed for ambient temperatures up to max. +125°C but can also be custom engineered for temperatures from -30°C to +180°C. Controller, cable and sensor are pressure-resistant up to 10 bar. Compact, robust sensor designs and high measurement accuracy, combined with a particularly favourable price/performance ratio, make these sensors suitable for high volume applications and for integration into plant, equipment and machinery.

Precision displacement, distance and position measurement
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Compact sensors for high precision measurements

July 31, 2015

Proximity sensors

Micro-Epsilon presents the new, confocal chromatic sensors for the confocalDT measurement system. The IFS2406 series stands out due to its compact design and high precision. As well as for distance measurements at submicrometer accuracies, the sensor is suitable for the one-sided thickness measurement of different materials.

The confocal chromatic sensors from Micro-Epsilon are non-contact, maintenance-free, provide long-term stability and so are ideal for high precision measurement applications. The confocalDT from Micro-Epsilon includes the fastest controller currently available in the world and achieves measurement rates of 10kHz using an LED light source and 70kHz using a Xenon light source. It provides high precision measurement results in displacement and distance measurement tasks, as well as thickness measurement of transparent objects. A wide range of sensors and various interface options such as Ethernet, EtherCAT, RS422 and analogue output open versatile fields of application.

The IFS2406 sensors are specially designed for vacuum applications. These models stand out due to their compact size, submicrometer accuracy and a small measurement spot size. Due to its axial and radial measuring directions, the sensor models are extremely versatile in terms of their use. Due to their passive design they can even be used in Ex areas. The measurement channel is parameterised via a comfortable web interface which makes it unnecessary to install a separate measurement software.

As well as distance measurements on reflecting or transparent surfaces, these sensors can also be applied in one-sided thickness measurement of transparent film, plates or layers. Typical fields of application includes displays and glass production, medical engineering and research and development.

Compact sensors for high precision measurements
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Industrial handheld pyrometers measure temperatures up to 2000 °C

June 24, 2015

Pyrometers

The new handheld thermometers of the thermoMETER P20 series from Micro-Epsilon cover a broad temperature range from 0 to 2000 °C. From four models, the user selects the appropriate pyrometer for the respective temperature range and field of application out of four models.

The thermoMETER P20 series stands out due to its high optical resolution and numerous detection wavelengths. P20 reliably detects object temperatures at a maximum distance of 12m. Integral laser aiming or telescopic sight enable exact sighting of targets. A data logger stores up to 2000 measured values. Data output is via a USB interface.

The main fields of application for the portable pyrometers of the thermoMETER P20 series include temperature measurement in the primary and secondary steel processing e.g. in forging processes or in foundries.

Industrial handheld pyrometers measure temperatures up to 2000 °C
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New flexibility for capacitive displacement measurement - capaNCDT 6200

December 10, 2014

Capacitative movement sensors 

The multi-channel measurement system for capacitive displacement sensors based on the modularity principle, capaNCDT 6200; has now been extended by the new controller DT6230. Compared to its “little brother”, the DT6230 does not only offer an Ethernet but also an EtherCAT interface as well as an integrated synchronisation. Thereby, the whole system offers more flexibility.

In combination with the demodulators DL6220 and DL6230, the new mid-range class is more flexible than any other system: The single components – controller, demodulator, sensor – are freely interchangeable and allow customer-specific systems to be provided from stock. With a unique modular design, sensor systems that have already been purchased can be enlarged easily.

The capaNCDT 6200 series is a unique modular multi-channel measurement system for capacitive displacement sensor and particularly stands out due to its excellent price/performance ratio. The measurement system consists of one controller and the respective demodulator for the sensor. The controller can be extended to 4 channels. All capacitive displacement sensors from Micro-Epsilon can be used with the capaNCDT 6200 controlle , which can measure thickness, tilt angle and vibrations in the sub-micrometre and nanometre range.

New flexibility for capacitive displacement measurement - capaNCDT 6200
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turboSPEED DZ140 – fail-safe up to 285ºC

December 10, 2014

Current sensors

The new eddy current-based sensor system measures the rotational speed of turbochargers in bench and field tests. turboSPEED DZ140 is optimised for thin turbine blades made from aluminium or titanium. The system is thermally stable and very well protected from external interference.

The turboSPEED DZ140 is the fourth generation of eddy current-based revolution counters for turbochargers. The sensor system is suitable for speed measurements of 200 to 400,000 rpm. The sensor is just three millimetres in diameter, yet it provides the highest immunity to interference in harsh test conditions. The integrated temperature measurement feature records – among other data – the actual ambient temperature near to the sensor. The turboSPEED DZ140 provides much higher immunity to interference than other eddy current-based revolution counters. The DZ 140 eddy-current measuring system is resistant to oil and dirt. The maximum operating temperature of the miniature sensor is 285°C, which is a key advantage compared to optical speed measuring systems, as this helps to achieve high precision measurements on a continuous basis. The well engineered design also enables easy sensor replacement without further adjustments.

turboSPEED DZ140 – fail-safe up to 285ºC
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New price class of eddy current displacement sensors - eddyNCDT 3001

December 08, 2014

Current sensors

The eddyNCDT 3001 is a cost-effective eddy current sensor with housing that has to date only been reserved for inductive sensors and proximity sensors. This compact sensor comes with integrated electronics including temperature compensation, offering an excellent price/performance ratio, as well as easy operation. The high measurement accuracy and linearity as well as the high frequency response rate of 5 kHz are outstanding characteristics compared to other sensors in the same price class. The sensors are factory-calibrated for ferromagnetic and non-ferromagnetic materials in the measuring range of 4 mm. The sensors are protected to IP67 and are therefore universally applicable in automation, machine building and machine design. As the sensors are easy to use and cost-effective, they are particularly suitable for standard production in OEM applications. The new DT3001series opens up new application fields for the Micro-Epsilon product range based on the eddy current principle.

New price class of eddy current displacement sensors - eddyNCDT 3001
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Measuring spindle growth in high speed milling machines - eddyNCDT SGS 4701

December 08, 2014

Current sensors

In order to minimise positioning errors in machine tools, the eddy current sensor SGS 4701 measures the thermal extension of high-frequency spindles.

The spindle is at the heart of a machine tool and so plays a decisive role in the dimensional accuracy and surface quality of the respective workpiece. High speeds and the heat generated result in the axial extension of the workpiece spindle and to the resultant positioning error during finishing of the workpiece. The new eddyNCDT SGS 4701 miniature eddy current sensor measures the thermal and centrifugal force extension of high-frequency spindles by measuring on the labyrinth-ring. The measured values are fed into the CNC machine tool as correction values and compensate for any positioning errors. The miniature sensor models have dimensions of 4.5 x 10 x 12 mm³ or 4 x 4 x 10 mm³ and can be integrated with the controller into the machine tool spindle. For ease of handling and in order to achieve maximum accuracy, the eddyNCDT SGS 4701 is factory calibrated for ferromagnetic and non-ferromagnetic materials used by the customer. For temperature compensation of the eddyNCDT SGS 4701, the temperature of the sensor is measured via the resistance of the eddy current coil. This signal is also available to the customer, which can eliminate the need for any additional temperature sensing technology. Due to its interchangeability with the previous model, the new mini-sensor technology can be easily upgraded at any time. This sensor is now available as a standard catalogue product and suited for OEM modifications as well.

Measuring spindle growth in high speed milling machines - eddyNCDT SGS 4701
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