Yesterday | Archive for measurement technology
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Immerse yourself in the measurement technology of yesterday: Here you will find developments from 2019 – 2014Have fun and exciting déjà vu games with the measurement technology memory game! The page is currently under construction.
Content
- Thermal imaging cameras / infrared cameras 2019 to 2014
- IR camera for laser processing below 1900 °C
- IR camera with cooling housing, air purge attachment and shutter
- Thermal imaging camera with microscope optics for electronics developers
- IR camera with robust accessories for the glass industry
- Thermal imager detects molding-related errors in injection molding
- Special wavelength range reduces measurement errors below 2000 °C
- Line camera for the production of glass sheets and glass container
- Outdoor protective housing for IR cameras in dusty and humid environments
- Thermal imaging camera with telephoto optics for small objects at a great distance
- 1800 degrees Celsius for metals - trade fair statement
- Thermal imaging camera prevents spread of Ebola fever
- Thermal imaging camera with safety driving circuit for process automation
- Smallest thermal imaging camera for research and development
Thermal imaging cameras / infrared cameras
You can find the current thermal imaging cameras Read.
IR camera for laser processing below 1900 °C
19.11.2019 | When measuring the temperature in processes where lasers are used, the IR camera be insensitive to the scattered light of the laser. The new PI 08M from Optris is ideal for such applications because it has a very narrow-band spectral sensitivity at 800 nm.
Most industrial processing lasers like NIR or CO2-Laser operate outside of this range, so the detector is protected against stray laser light without additional filters. Typical applications are laser welding, laser soldering or laser hardening processes where temperatures play an important role.
With the wavelength range of 800 nm, the PI 08M is the measurement error minimal even with unknown or changing emissivities. At high temperatures, this is only 1,5% of the measured value; below 1500 °C even only 1%. The measuring range extends from 575° to 1900 °C. Inside the new IR camera is a highly dynamic CMOS detector with an optical resolution of up to 764 x 480 pixels, which can be operated at a maximum image frequency of 1 kHz. This means that the thermal imaging cameras from Optris are also suitable for very fast processes.
Fastest 3D stereo camera and image processing in one device
The PI 08M from Optris can be easily integrated into a wide variety of applications. A real-time analog output provides an output signal of 0 to 10 V. The temperature is averaged over an area of 8 x 8 pixels - the position of this area can be freely selected. Also included is a Software Development Kit included, which makes all functions available to the user.
IR camera with cooling housing, air purge attachment and shutter
08.04.2019/XNUMX/XNUMX | the infrared cameras of Compact Line Xi 80 and Xi 400 by Optris have been supplemented with new industrial accessories for use under extreme conditions. The system has a modular structure, so the water cooling housing, the Purging attachment and the shutter can be used individually or in combination.
The out Stainless steel shutter basically serves to protect the optics from dirt and incident objects. This is particularly important when the thermal imager is measuring up and the measurement objects are above it, as in glass industry. With a response time of just 100 ms, the IR camera is optimally protected against falling broken glass. In addition, the shutter can be used in discontinuous processes so that the optics are only exposed to the ambient conditions during the measurement process.
In order to be able to use the compact thermal imaging camera under extreme conditions in industry, there is a Water Cooling made of stainless steel and an air purge attachment made of anodised aluminum are available. Cooling allows use in hot environments up to 250°C. The air purge attachment protects against air particles and prevents condensation on the optics. It can be screwed on in 4 positions, whereby the direction of the air flow can be individually adjusted to the application. A silicon window is integrated in the Purging Attachment, which can be replaced in the event of mechanical damage without complex assembly steps.
Thermal imaging camera with microscope optics for electronics developers
22.11.2018/XNUMX/XNUMX | Optris shows how easy the Thermal imager pi 640 can be converted into a microscope optic with a standard optic. The new microscope lenses were specially developed for the requirements of the electronics industry.
IR camera with robust accessories for the glass industry
20.11.2018/2014/2016 | Optris has XNUMX and XNUMX with the PI 450 G7 and PI 640 G7 two special infrared cameras brought to market for the glass industry. In order to meet the industry-specific requirements, a laminar air purge was developed in addition to the robust cooling jacket. The first well-known customers are using the system for 24/7 line scan applications.
"The overall system offers easy integration and offers the best price-performance ratio for a measuring point on the market," explains Ingo Stahlkopf, Glass Application Specialist at Optris.
In the float process, the temperature profile of the entire glass width must be recorded at various points, e.g. B. through slots a few millimeters wide at the zone transitions in the cooling oven. Compared to conventional systems, the manufacturer offers special thermal imaging cameras in one cooling jacket, which works flawlessly in ambient temperatures up to 315 °C. A laminar air purge can now be integrated between the cooling housing and the application, which prevents dirt deposits on the camera optics with a flexibly adjustable air flow. "The cooling system works so well that the air purge can even be touched," describes Ingo Stahlkopf.
"The Linescan system only needs one computer," it says Torsten Czech, Head of Product Management at Optris to the point. Compared to other solutions on the market, no additional server units, software licenses or maintenance contracts are required. When mounted, the infrared cameras can be focused from the outside and the included, free PIX Connect software can be adapted to the glass application from the PC. Thanks to its folding mechanism, the Laminar Airpurge enables maintenance of the infrared devices without complete disassembly.
Thermal imager detects molding-related errors in injection molding
01.11.2017 | Uncontrolled and unstable processes are the most frequently encountered cost guzzlers in injection molding. 60 to 70% of all part-related defects are caused by the Temperature control of the injection molds. With the thermal imaging cameras from Optris and the online quality monitoring system “IR-Thermo Control” from Willi Steinko and Plexpert, thermal errors in injection molding processing can be detected inline as they occur on the website.
In combination with the "PI Connect" software, the data is transferred to IR thermal control. On this basis, fitters, process engineers and those responsible for quality can quickly, reliably and purposefully produce high-quality components with the shortest possible cycle times. The time and energy savings achieved lead to a reduction in unit costs in the production of the molded parts.
Most common thermal problems and their causes
| appearance | Thermal problem assignment | Most common cause |
| Dimensional problems, lack of mechanical properties | Excessive temperature deviations on the tool wall | Asymetric tempering channel layout, insufficient heat dissipation, bridging of tempering channels |
| Molding default | Excessive temperature deviations on the mold wall, partially or over the entire molded part | Asymetric tempering channel layout, insufficient heat dissipation, bridging of tempering channels |
| Surface markings by gloss and matte spots, burr formation | Thermal impressions of inserts and ejector pins, domes, retainers, ribs and breakthroughs | Insufficient heat dissipation, insufficient insulation of hot runner systems and HK nozzles, non-tempered parts of molded parts |
| Significantly too long cooling times / cycle times | Poorly designed mold temperature control, high pressure losses within the temperature control system, hotspots on the molded part | Clogged cooling ducts, inadequate technical condition of the tempering and cooling units, aggressive water condition, untreated or insufficiently treated water |
The IR-Thermo Control System supplies this important data and shows short-term effects as well as trends such as a gradual increase in temperature in the serial process. The simple installation within 5 minutes on any injection molding machine enables maximum flexibility and availability of the system.
Temperature deviation via reference image method
The process-oriented user guidance facilitates the definition of control limits and automatically provides temperature deviations via a reference image method. Any differences that occur are immediately visible. The IR-Thermo Control quality module creates an image of the molded part in each cycle. A reference image is generated from the first GUT part.
Each subsequent shot is compared with the reference image. If a deviation occurs anywhere, an alarm is issued. These technologies are found e.g. B. Application in 2K injection molding and in the combination of foam and compact injection molding (Krallmann Pilot Werkzeug GmbH).
In another example from automotive sector Disturbances occurring in the process are directly visible. The following application shows a thermal weak point that occurs during production in such a way that the area on the left (left image) has a lower surface temperature than the area on the right. As a result, the component was made almost 2,5 mm shorter. The reason for the dimensional deviation was that the required holding pressure could not be effective. The mold temperature control was then adjusted in this area and thus optimized (picture on the right).
No other technical instrument reveals thermal inadequacies as clearly as this plug and work system IR thermal control. For example, excessive temperature differences on injection molded parts and tools are displayed in a way that is understandable for everyone. This means that the previous laying on of hands to locate hot, warm or cold zones on the component or the tool surface is finally a thing of the past.
Special wavelength range reduces measurement errors below 2000 °C
28.04.2017/XNUMX/XNUMX | The new thermal imaging camera PI 05M from Optris has a continuous measuring range from 900° to 2000 °C. It has a resolution of 764 x 480 pixels and measures in the wavelength range from 500 to 540 nm. It supplements the PI 1M with a measuring range from 0,85 to 1,1 µm and is suitable for use in the metal industry. Due to the special spectral range, it minimizes measurement errors with unknown or changing emissivities.
“With the PI 05M, we have developed another compact thermal imaging camera for the global metal industry that is particularly suitable for measuring the temperature of molten metal,” explains Dr.-Ing. Ulrich Kienitz, CEO of Optris GmbH.
With the PI 05M you can Surfaces up to 2000 °C measure – consistently from 900 °C. With an image frequency of 1 kHz, measurements can be taken at an optical resolution of 72 x 56 pixels, with this area of over 4000 pixels being freely positionable. There is also a direct real-time analogue output with a freely positionable 8 x 8 pixel region. These options offer optimal adaptation to the respective application.
Thermal imaging camera innovations for industrial applications
The camera measures infrared radiation in the Spectral range between 500 and 540 nm and is therefore suitable for all laser processing processes, since thermal radiation above 540 nm is blocked very well. The diode lasers commonly used in the metal sector in the 900 to 1030 nm range or the Nd:YAG laser at 1064 nm therefore have no disruptive effect on the measurement. The camera works here without any additional filters. Basically, this short-wave measurement of metal surfaces has the advantage that measurement errors are greatly minimized in the case of unknown or changing emissivities.
Line camera for the production of glass sheets and glass container
28.09.2016/XNUMX/XNUMX | For the glass industry, Optris presents the Thermal imaging camera 640 G7. With its 7,9 µm filter, it is suitable for measuring glass and offers even more application options thanks to the VGA resolution. The "PI Connect" software enables it to be used as a line scan camera, which is elementary when checking the temperature of ribbons and panes of glass.
Temperature control is of crucial importance in the glass industry and is carried out in almost all process steps. In closed and hot areas, temperatures can sometimes only be determined using a room sensor. The compact infrared thermometers and cameras can also be used in cramped environments with high temperatures. The camera is in the cooling process at the flat glass manufacture used as well as in container glass production.
When measuring temperatures precisely, the emissivity an essential factor. Glass has emissivities of approx. 0,85 in the long-wave range. At higher process temperatures, it is typically measured at 5,0 µm or 7,9 µm, since the emissivity is ≥0,95 in these spectral ranges. The main advantage of 7,9 µm is the lower angle dependency of the emissivity.
Outdoor protective housing for infrared cameras in dusty and humid environments
17.06.2016/XNUMX/XNUMX | In addition to the cooling housings, Optris now also offers specially designed protective housings for outdoor use. The infrared cameras of the Optris PI series can thus year-round outdoors used under harsh conditions. As a special feature, the outdoor protective housing has an air purge attachment. Large outdoor areas can be integrated into the control system via the USB server gigabit, which can also be integrated into the housing.
The outdoor protective housing is with the Degree of protection IP 66 classified and is made of robust sheet steel. The camera lens is effectively protected from external influences by the anti-reflective coated germanium window or a resilient protective film. In addition, the outdoor protective housing is equipped with a blow-out attachment that continuously protects the protective window from contamination and allows the thermal imaging cameras to work even in dusty and humid environments.
By being integrated into an Abus housing PTC heating element, which switches on automatically at temperatures below 15 °C, as well as the fan unit, which ensures even temperature distribution, the thermal imaging camera is always kept at the optimal operating temperature. This results in an application range of -40° to +30 °C. The online USB cameras can be converted to Ethernet via the USB server Gigabit, which can also be integrated, and can therefore be integrated into a process system over long distances. The dimensions of the housing are 390 x 150 x 112 m.
Thermal imaging camera with telephoto optics for small objects at a great distance
21.04.2016/XNUMX/XNUMX | The VGA thermal imaging camera PI 640 from Optris has been supplemented by another interchangeable lens. Four lenses are now available for the different measurement tasks and customer requirements. In addition to the 33°, 60° and 90° optics, measurements can now also be carried out with a 15° telephoto lens.
The PI 640 is in industrial use across all sectors worldwide. In addition to the surface to be measured is the Size of the measuring spot of crucial importance. The telephoto lens now makes it possible to measure the temperature of extremely small objects from greater distances. For example, at a distance of 5 m, the thermal imaging camera can measure the exact temperature of 6 mm2 measure small objects.
The Objectives were designed and developed in Germany. The various components, including the germanium lenses commonly used in the long-wave infrared measurement range (LWIR), are manufactured and assembled at the Berlin company headquarters and the respective optics are calibrated to the thermal imaging cameras. The license-free software is included in the scope of delivery.
1800 degrees Celsius for metals - trade fair statement
15.04.2015 | Dr.-Ing. Ulrich Kienitz, Managing Director of Optris GmbH, Berlin, presents the new developments in infrared technology at the Hanover Fair 2015.
Thermal imaging camera prevents spread of Ebola fever
19.09.2014/XNUMX/XNUMX | Virus epidemics like that H1N1 virus 2009/2010 and the Ebola virus 2014 are highly dangerous and create a worldwide demand for appropriate screening techniques that enable rapid and non-contact identification of travelers who may be infected with fever. With its "PI 160" "PI 160" thermal imaging camera, Optris offers a cost-effective and easy-to-use control system for detecting people with increased body temperature.
“In places with a high concentration of people, such as airports, people can be scanned quickly and across the board so that, in the event of suspicion, they can be discreetly pulled out for individual examination,” explains Dr.-Ing. Ulrich Kienitz, Managing Director of Optris GmbH, the advantages of the application.
The entire system consists of the fast thermal imaging camera PI 160 as well as the comprehensive software package "PI Connect". The high-tech devices are easy to install, operate and can be used on the go. The temperature resolution of 0,1 °C detects the smallest temperature changes that generate an automatic alarm.
Thermal imaging camera with safety driving circuit for process automation
10.11.2014/XNUMX/XNUMX | The new process interface (PIF) from Optris enables automated process monitoring in which the hardware of the PI infrared cameras is combined with all cable connections and the free "PI Connect" analysis software are permanently monitored during operation. The control of the external computer in this monitoring process is unique on the market. The developers have transferred the principle of the safety driving circuit, as known from railway vehicles, to the thermal imaging camera system.
When integrating the thermal imaging cameras into a safety-relevant, automated process, a continuous process monitoring can be guaranteed in 24/7 operation. To ensure this, six fail-safe states are monitored in the industrial PIF: malfunction of the thermal imaging camera, malfunction of the software, failure of the power supply or interruption of the USB line, failure of the PIF power supply, interruption of the connection cable between the camera and PIF and a cable break on the fail-safe cable. These are output via a Relais, that at one steering, e.g. B. one SPS, has been connected. The status is also displayed on the device by an LED.
For integration into the process, the industrial process interface 3 analogue/ alarm outputs, 2 analogue inputs, 1 digital input and 3 alarm relays. This enables monitoring of multiple measurement zones in the camera's field-of-view (FoV). In addition, functions of the camera can be easily controlled remotely.
Smallest thermal imaging camera for research and development
09.04.2014 | Dr.-Ing. Ulrich Kienitz, Managing Director of Optris GmbH, Berlin, presented us at the Hannover Messe 2014 with the smallest thermal imaging camera on the market, which is ideal for R&D.
