<p id="isPasted">When we first came up with the idea to enhance our projection units with the power of blue light wavelengths, we knew we were onto something extraordinary. </p><p>By solving long-standing challenges with difficult materials, extending scanning ranges, and enabling new multi-sensor configurations, blue laser vision systems are opening up application areas that were previously impractical or impossible.</p><p>Today, we can confidently say that the new generation of 3D scanners delivers 2.5x better data completeness and 50% more scanning power. </p><p>When paired with red laser systems in multi-sensor setups, you can also perform a simultaneous 3D scanning tasks with no interference, which can be essential for applications like  <a href="https://www.photoneo.com//bin-picking" target="_blank">bin picking</a> and <a href="https://www.photoneo.com//3d-meshing" target="_blank">3D meshing</a>.</p><h2><strong>The Physics Behind the Blue Laser Advantage</strong></h2><p>To understand why blue laser technology represents such a significant advancement, we need to dive into the fundamental physics of light interaction with materials. The key lies in wavelength. </p><p>Blue lasers typically operate at wavelengths around 405-450 nanometers. This is significantly shorter than the 650-670 nanometer wavelengths of traditional red lasers.</p><p>This shorter wavelength brings several crucial advantages.</p><h3><strong>Enhanced Surface Interaction</strong></h3><p>Shorter wavelengths scatter more effectively across a broader range of materials. This phenomenon means that blue light interacts more readily with surface textures and microscopic irregularities that longer wavelengths might pass through or reflect away from. </p><p>The result is dramatically improved data capture on challenging materials that have historically been problematic for 3D scanning.</p><h3><strong>Reduced Speckle Noise</strong></h3><p>One of the most significant technical improvements blue lasers bring is the reduction of speckle noise. </p><p>Speckle patterns – those granular interference patterns that appear when coherent light reflects off rough surfaces – have long been a nemesis of <a href="https://www.photoneo.com/how-to-evaluate-3d-sensing-technologies/" target="_blank">precision 3D scanning</a>. </p><p>The finer speckle structure produced by blue lasers creates less interference with captured data, resulting in cleaner, more accurate point clouds.</p><h3><strong>Superior Signal-to-Noise Ratio</strong></h3><p>Blue laser vision systems can achieve higher signal-to-noise ratios, particularly when combined with sensors optimized for blue wavelengths. </p><p>This improvement translates directly into better data quality, especially in challenging scanning conditions where ambient light or material properties might compromise measurement accuracy.</p><h2><strong>Breaking Through Material Barriers</strong></h2><p>Perhaps nowhere is the advantage of blue laser technology more apparent than in its ability to handle materials that have traditionally challenged <a href="https://www.photoneo.com/3d-scanning-software/" target="_blank">3D scanning systems</a>.</p><h3><strong>Reflective and Metallic Surfaces</strong></h3><p><a href="https://ai.photoneo.com/automotive" target="_blank">Automotive manufacturing</a>, with its abundance of polished metal components, stamped parts, and reflective surfaces, has been a particularly challenging environment for traditional 3D scanning</p><p>Blue lasers excel at penetrating through surface reflections and capturing meaningful geometric data from highly reflective materials. </p><p>This capability opens up new possibilities for in-line quality inspection of  <a href="https://ai.photoneo.com/automotive" target="_blank">automotive</a> components, from body panels to precision-machined engine parts.</p><hr /><p><em>To take a deeper look into how 3D vision can transform inspection and quality control.</em> <em>Not only in the automotive industry. Download our free e-book today. </em></p><p><a href="https://ai.photoneo.com/3d-vision-automotive-quality-control-ebook" target="_blank">Go to Download</a></p><h3><strong>Dark and Absorptive Materials</strong></h3><p>At the opposite end of the spectrum, very dark materials that absorb most incident light have also posed challenges for red laser systems. </p><p>Blue light’s high energy density and distinct absorption properties enable better data capture from difficult materials. Consequently, systems can reliably scan complex surfaces without requiring sprays or special surface preparation.</p><h3><strong>Transparent and Semi-Transparent Objects</strong></h3><p>One of the most exciting applications of blue laser technology is in scanning transparent and semi-transparent materials. </p><p>Blue laser systems unlock complex measurements previously considered impractical with red light. A primary example is <a href="https://www.photoneo.com/case-cat/automotive/" target="_blank">automotive</a> gap and flush inspection, where the system must accurately capture the interface between transparent plastic and painted metal.</p><h2><strong>Extended Dynamic Range Capabilities</strong></h2><p>Blue laser technology doesn’t just improve scanning quality at traditional ranges – it extends the useful scanning envelope significantly. </p><p>Several factors contribute to this <a href="https://www.photoneo.com/high-dynamic-range/" target="_blank">enhanced dynamic range</a> performance:</p><ul><li><strong>Higher Power Density </strong>– Blue laser projection units can deliver significantly more optical power within the same laser safety class restrictions. This increased power density means a more useful signal reaches distant objects, enabling reliable data capture at ranges that would be marginal or impossible with red laser systems.</li><li><strong>Improved Dynamic Range – </strong>When combined with advanced sensors and processing algorithms, blue laser systems can achieve dynamic ranges 20dB or more beyond traditional systems. This extended dynamic range means the scanner can simultaneously capture fine details on nearby objects while still maintaining signal integrity from distant surfaces – a crucial capability for <a href="https://www.photoneo.com/mixed-palletizing-3d-vision/" target="_blank">applications like palletizing</a>, where robots might need to scan objects at various heights within a large working volume.</li><li><strong>Better Ambient Light Suppression</strong> – The spectral characteristics of blue lasers, combined with precisely matched optical filters, enable  <a href="https://www.photoneo.com/lighting-conditions-machine-vision/" target="_blank">superior ambient light suppression</a>. This capability is particularly valuable in industrial environments where natural lighting, overhead fluorescents, or other illumination sources might interfere with scanning operations.</li></ul><h2><strong>Multi-Sensor Synergy</strong></h2><p>One of the most innovative applications of blue laser technology is in <a href="https://www.photoneo.com/multi-perspective-3d-vision-automotive-industry/" target="_blank">multi-sensor scanning configurations</a>. Because blue and red wavelengths operate in distinct spectral bands, sensors using different laser colors can operate simultaneously without interference.</p><p>This capability enables several powerful scanning modalities:</p><h3><strong>Parallel Multi-View Scanning</strong></h3><p>Scanning in succession adds time and complexity to the operation. Rather than scanning sequentially from different angles, <a href="https://www.photoneo.com/motioncam-3d-color-blue-launch-webinar-faq/" target="_blank">blue and red laser systems</a> can scan simultaneously from multiple perspectives. </p><p>This parallel operation cuts scanning time in half while providing the multiple viewpoints needed for complete object reconstruction.</p><h3><strong>Complementary Material Coverage</strong></h3><p>Different laser wavelengths interact differently with various materials. By using both blue and red lasers simultaneously, scanning systems can optimize data capture across a broader range of surface types. This way, you can essentially combine the strengths of both technologies.</p><h3><strong>Enhanced Robustness</strong></h3><p>Multi-wavelength scanning provides inherent redundancy. If one laser struggles with a particular surface or material characteristic, the other wavelength often compensates. The results introduces more complete and reliable data capture.</p><h2><strong>Applications Transformed by Blue Laser Technology</strong></h2><p>The capabilities enabled by blue laser technology are opening up entirely new application areas and dramatically improving existing ones:</p><h3><strong>Advanced Quality Inspection</strong></h3><p>The improved resolution and material compatibility of blue laser systems enable quality <a href="https://www.photoneo.com/case-study/automated-inspection-of-large-objects-in-motion/" target="_blank">inspection applications</a> that were previously impractical. </p><p>Weld bead inspection, surface finish analysis, and dimensional verification of complex geometries all benefit from the <a href="https://www.photoneo.com/crash-car-inspection-3d-vision-motion/" target="_blank">enhanced data quality</a> and completeness that blue lasers provide.</p><h3><strong>Outdoor and Variable Lighting Applications</strong></h3><p>Superior ambient light suppression makes blue laser systems viable for applications in uncontrolled lighting environments. </p><p>Solar panel inspection, <a href="https://www.photoneo.com/case-cat/agriculture/" target="_blank">agricultural applications</a>, and railway maintenanc. All of these scenarios where consistent artificial lighting isn’t practical – become feasible with robust blue laser scanning systems.</p><h3><strong>High-Precision Assembly Operations</strong></h3><p>In electronics manufacturing and other <a href="https://ai.photoneo.com/dynamic-assembly-3d-vision-ebook" target="_blank">precision assembly operations</a>, the improved resolution and material handling capabilities of blue laser systems enable more sophisticated guidance and verification tasks. </p><p>Component placement and quality verification can all be performed with higher confidence and accuracy.</p><h3><strong>Large-Scale Automation</strong></h3><p>The extended range capabilities of blue laser systems enable automation in larger working volumes. <a href="https://www.photoneo.com/automated-warehouse/" target="_blank">Warehouse automation</a>, large-part manufacturing, and infrastructure inspection applications all benefit from the ability to capture high-quality data across greater distances.</p><h2><strong>Looking Forward: The Future of Blue Laser Technology</strong></h2><p>As blue laser technology matures, we can expect to see continued improvements in several areas:</p><h3><strong>Integration with Artificial Intelligence</strong></h3><p>The higher quality, more complete data provided by blue laser systems creates better inputs for AI-powered analysis and decision-making systems. This synergy between improved sensing and intelligent processing will enable even more sophisticated <a href="https://www.photoneo.com/application/" target="_blank">automation applications</a>.</p><h3><strong>Enhanced Multi-Modal Sensing</strong></h3><p>Future sensing systems will evolve by integrating blue laser structured light with complementary modalities, such as thermal imaging, hyperspectral analysis, or advanced RGB processing. This synergy will enable comprehensive systems capable of unprecedented material analysis and geometric precision.</p><hr /><p><em>Explore Photoneo’s Blue Laser devices – MotionCam-3D Color (Blue) for dynamic scanning in motion and PhoXi 3D Scanner Gen3 for the maximum precision in static scenes.</em></p><p><br /></p>

Physics Behind the Blue Laser Advantage

Why Blue Laser is Becoming the Core of High-Fidelity 3D Scanning

<p id="isPasted"><em>Spectroscopy technology is critical for numerous industries, facilitating precise analysis of physical, chemical, and structural properties through interactions between matter and infrared light. Hamamatsu Photonics introduces the FTIR Engine C16511-01, a state-of-the-art near-infrared spectrometer designed for rapid and accurate data acquisition in demanding industrial environments. Leveraging advanced optical interferometry, Ethernet connectivity, and a compact form factor, this instrument enhances real-time monitoring capabilities in sectors such as pharmaceuticals, food processing, and biotechnology. By addressing previous technological limitations, Hamamatsu’s innovation provides greater accuracy, reliability, and integration flexibility, significantly advancing the application of industrial spectroscopy.</em></p><h2>Introduction</h2><p>Optical spectroscopy is a technique that analyzes how light interacts with matter to determine its physical, chemical, or structural properties using wavelengths in the ultraviolet (UV), visible, or infrared spectrum. Increasingly, spectroscopy is essential in sectors such as pharmaceutical manufacturing, food processing, and biotechnology, where rapid and accurate real-time data acquisition is crucial for quality control and operational efficiency <sup>[1]</sup>. Responding to these industry demands, Hamamatsu Photonics has released the <a href="https://www.hamamatsu.com/us/en/product/optical-sensors/spectrometers/ftir-engine/C16511-01.html">FTIR Engine C16511-01</a>. It is engineered to overcome limitations of traditional spectrometers, including slow data processing, limited integration flexibility, and inadequate communication interfaces <sup>[2]</sup>.</p><h3>Current Challenges in Optical Spectroscopy</h3><p>Traditionally, industrial spectroscopy faced substantial challenges, primarily involving complex instrumentation and limited data transfer speeds. Bulky equipment often cannot fit easily into crowded factory environments. Many traditional systems rely on USB connections, limiting data speed and reliability, which complicates rapid decision-making in industrial production <sup>[2]</sup>. These industrial diffractive spectrometers also face a critical trade-off between spectral resolution and measurement speed. FTIR spectrometers, however, overcome this compromise, delivering high spectral resolution simultaneously with high-speed data collection <sup>[2]</sup>.</p><p>Moreover, environmental factors such as temperature variations, vibrations from machinery, and electromagnetic interference can affect optical components. These factors make it challenging to maintain consistently high wavelength accuracy. Precision alignment of mirrors and detectors also poses difficulties over extended operational periods, especially in environments where frequent calibration may be impractical. Uncalibrated measurements become unstable and degrade the quality of collected data, leading to less confident quality control outcomes.</p><p>Another significant issue is the variability in sample conditions and analyte concentrations, which can demand real-time monitoring. Bulky or sensitive spectrometers may have limited tolerance for environmental fluctuations, necessitating controlled laboratory-like conditions that are not always feasible in process lines <sup>[3]</sup>. Consequently, industrial facilities experience production slowdowns, higher operational costs, and elevated risk of noncompliant products. When high wavelength accuracy and stable data acquisition are not ensured, results can become inconsistent or erroneous, necessitating rework or scrapped batches, directly impacting a company’s competitiveness <sup>[4]</sup>.</p><p>In short, the combination of physical hardware constraints, suboptimal communication interfaces, environmental stressors, and calibration complexities can all impede successful spectroscopic analysis <sup>[5]</sup>. Addressing these limitations is essential for safeguarding product integrity, optimizing resource usage, and enabling effective real-time decision-making in modern industrial ecosystems <sup>[1]</sup>. </p><h2>Introducing the FTIR Engine C16511-01</h2><p>The <a href="https://www.hamamatsu.com/us/en/product/optical-sensors/spectrometers/ftir-engine/C16511-01.html">FTIR Engine C16511-01</a> from Hamamatsu integrates advanced Fourier Transform Infrared (FTIR) technology within a compact, rugged enclosure optimized for industrial applications<sup> [1]</sup>. By utilizing Ethernet (GigE Vision) connectivity, this new instrument ensures significantly enhanced communication speed and reliability compared to traditional USB-connected spectrometers <sup>[1,2]</sup>.</p><h3><iframe id="680910fd4f6c9900d9178b4a" width="250" class="specs-iframe" height="440" src="https://wevolver.com/iframe/specs/ftir-engine-ft-nir-spectrometer?iframe=true" frameborder="0" scrolling="no"></iframe>Advanced Optical Interferometer Technology</h3><p>Central to the FTIR Engine C16511-01 is its Michelson optical interferometer, which includes a built-in light input section, beam splitter, fixed mirror, movable mirror (ϕ3 mm), and a high-performance InGaAs photodetector. This configuration precisely captures variations in light intensity signals caused by the position of the movable mirror. These signals are processed using a Fourier transformation, producing highly accurate optical spectra <sup>[1]</sup>.</p><p>Additionally, the system features an integrated vertical cavity surface-emitting laser (VCSEL). A VSCEL is a specialized semiconductor laser that emits light perpendicular to the wafer surface, providing continuous, precise monitoring of the movable mirror’s position. This distinctive laser design ensures superior wavelength accuracy and thermal stability by producing a stable and narrow emission profile, which is critical for sensitive industrial processes requiring rigorous quality control. By delivering a consistent reference signal, the VCSEL minimizes measurement drift and enhances the overall precision of Fourier transform calculations, thus maintaining reliable spectral data throughout demanding industrial operations <sup>[1]</sup>.</p><h2>Detailed Technical Capabilities</h2><h3>High Signal-to-Noise Performance</h3><p>With a signal-to-noise ratio exceeding 10,000, the device can reliably detect and quantify subtle variations in spectral data. This sensitivity ensures accurate measurements even in environments with inherent background noise, enabling precise detection of low-concentration analytes critical for many industrial processes <sup>[1]</sup>.</p><h3>High-Speed Data Acquisition</h3><p>The FTIR Engine C16511-01 records spectra at a rate of 275 frames per second. This capability is crucial for capturing dynamic processes in real-time, essential for rapidly evolving reactions or high-throughput industrial environments where timely data is critical<sup> [1]</sup>.</p><h3>Ethernet Connectivity</h3><p>The Ethernet (GigE Vision) interface provides rapid and reliable data transfer, fully compatible with Windows and Linux operating systems, offering easy integration with OEM equipment. It ensures robust, continuous performance even in electromagnetically noisy industrial environments<sup> [1,2]</sup>.</p><h3>Compact Form Factor</h3><p>The compact design, measuring 68 × 124 × 66 mm and weighing approximately 580 g, facilitates integration into constrained or mobile industrial settings without sacrificing durability. This form factor enables installation in various operational configurations, including robotic or automated systems, where space efficiency is paramount <sup>[1]</sup>.</p><h3>High Wavelength Accuracy</h3><p>The built-in VCSEL laser provides precise positional feedback of the movable mirror, maintaining consistent wavelength accuracy. This capability ensures reliable quantitative and qualitative analyses across multiple measurements, which is critical in regulatory-sensitive applications such as pharmaceuticals and food safety <sup>[1]</sup>.</p><h3>Broad Spectral Range</h3><p>Covering wavelengths from 1100 nm to 2500 nm, the FTIR Engine enables comprehensive analysis across a wide variety of chemical compounds. This extensive spectral coverage supports diverse industrial applications, facilitating detailed molecular characterization essential for quality control and research<sup> [1].</sup></p><h3>Versatile Industrial Applications</h3><p>The FTIR Engine C16511-01 is a versatile analytical tool supporting various industries. In pharmaceuticals, it enables rapid, non-destructive inspection of medicinal products, ensuring accurate identification and quantification of active pharmaceutical ingredients (APIs) and excipients. It also supports polymorphism studies essential for drug solubility, stability, and bioavailability, and quickly detects cross-contamination between production batches, preventing costly disruptions<sup> [5,8]</sup>.</p><p>Within food processing and agriculture, the engine rapidly authenticates ingredients, detects contaminants, and evaluates nutritional profiles, providing immediate quality assurance. Its non-destructive nature and minimal sample preparation streamline routine testing, ensuring consistency and safety in food production <sup>[6,9]</sup>.</p><p>Biotechnology industries utilize the FTIR Engine for real-time monitoring of biochemical reactions, gaining valuable insights into reaction dynamics, yield optimization, and purity control. It plays a vital role in downstream processing, verifying protein and enzyme purity, and preventing costly batch failures by identifying deviations early <sup>[7,10]</sup>.</p><p>Additionally, the FTIR Engine significantly enhances recycling processes by rapidly identifying various polymers such as polyethylene, polypropylene, and polystyrene. Automated inline systems leverage its capabilities for efficient sorting of multi-layer plastics, improving recycling accuracy and supporting sustainable waste management <sup>[5,11]</sup>.</p><h2>User Benefits and Integration</h2><p>The FTIR Engine C16511-01 provides significant operational advantages, including high precision and rapid measurements for improved decision-making and quality assurance. Its robust Ethernet connectivity ensures reliable, high-speed data transfer, reducing downtime and maintenance requirements. The compact design simplifies integration across diverse industrial setups, enhancing flexibility.</p><p>To further support customers, Hamamatsu’s FTIR Engine comes with intuitive evaluation software. This software facilitates streamlined data acquisition, real-time configuration, and spectral visualization. It logs extensive spectral data and supports automated batch processing. Additionally, detailed DLL specifications allow integrators to develop custom software modules using languages such as C++ or Python, tailored to specific analytical needs. These APIs seamlessly integrate with existing SCADA systems and synchronize with third-party sensors or actuators, significantly improving overall process control and operational efficiency <sup>[1]</sup>.</p><p><span class="fr-img-caption fr-fic fr-dib"><span class="fr-img-wrap"><img src="https://images.wevolver.com/eyJidWNrZXQiOiJ3ZXZvbHZlci1wcm9qZWN0LWltYWdlcyIsImtleSI6ImZyb2FsYS8xNzQ1NDE3NDYzNjYyLTExQTd3XzZBTHlXN0VzNUJIUTR6b0JsOVFiUnF2QjlhLmpwZyIsImVkaXRzIjp7InJlc2l6ZSI6eyJ3aWR0aCI6OTUwLCJmaXQiOiJjb3ZlciJ9fX0=" style="width:833px" class="fr-fic fr-dib" /><span class="fr-inner">Connection diagram for transmission measurement.</span></span></span></p><h2 id="isPasted">Additional Options and Accessories</h2><p>Hamamatsu offers several accessories that further improve reliability and integration flexibility. Vibration isolation tables ensure measurement stability, specialized optical fiber cables minimize signal distortion, and flexible power options (12 V or 24 V) accommodate diverse industrial requirements. The FTIR Engine is also compatible with the L16462-01, a fiber-coupled diffused reflection light source designed for near-infrared applications. This light source enhances signal collection for diffuse reflectance measurements, improving data quality in in-line or remote monitoring applications. Together, these options ensure consistent data quality in demanding operational conditions <sup>[1]</sup>.</p><h3>Enhance Your Real-Time Monitoring Capabilities</h3><p>The FTIR Engine C16511-01 offers high-speed, high-accuracy spectral data acquisition in a compact, industrial-ready design. With advanced optical interferometry, integrated VCSEL technology, and robust Ethernet connectivity, it supports reliable in-line analysis across a range of demanding applications—from pharmaceutical manufacturing to polymer sorting.</p><p><a href="https://www.hamamatsu.com/eu/en/product/optical-sensors/spectrometers/ftir-engine/C16511-01.html">Learn more about the FTIR Engine C16511-01 and how it can support your analytical and process control requirements.</a></p><h2>References</h2><p>[1] Hamamatsu FTIR Engine C16511-01 Technical Documentation, Hamamatsu Photonics</p><p>[2] Hamamatsu FTIR Engine C15511-01 Technical Documentation (Previous Version), Hamamatsu Photonics</p><p>[3] Mitchell, S. (2020). "Calibration complexities in near-infrared reflectance technology for high-throughput lines." Journal of Applied Spectroscopy, 47(1), 11–15.</p><p>[4] Smith, J. &amp; Wilhelm, K. (2021). "Transmission Bottlenecks in High-Volume Spectral Data Systems." Industrial Engineering Journal, 58(2), 89–97.</p><p>[5] FTIR Spectroscopy Testing and Analysis, Contract Laboratory: https://outsource.contractlaboratory.com/ftir-spectroscopy-testing-and-analysis</p><p>[6] Agilent Technologies, FTIR Applications in Food Testing: https://www.agilent.com/library/applications/5991-1246EN_AppNote_MM_FoodIngredients.pdf</p><p>[7] Mettler Toledo, FTIR Spectroscopy for Bioprocess Monitoring:<a href="https://www.mt.com/us/en/home/applications/L1_AutoChem_Applications/ftir-spectroscopy.html"> https://www.mt.com/us/en/home/applications/L1_AutoChem_Applications/ftir-spectroscopy.html</a></p><p>[8] Huang, T., &amp; Carter, S. (2022). "Advancements in FTIR-Based Contamination Detection in Pharmaceutical Manufacturing." Journal of Pharmaceutical Analysis, 34(3), 211–219.</p><p>[9] Rossi, L., &amp; Martins, J. (2021). "Nutrient Profiling Using FTIR Spectroscopy in Food Production." Food Quality and Safety Journal, 17(4), 98–104.</p><p>[10] Pérez, M. &amp; Clarkson, D. (2023). "Real-Time Downstream Process Monitoring with FTIR in Biotechnology." Bioprocess Engineering Quarterly, 45(2), 67–72.</p><p>[11] Tanaka, Y. &amp; Basu, R. (2021). "Automated Inline FTIR Analysis for Multi-Layer Polymer Recycling." Journal of Sustainable Materials Engineering, 22(1), 13–21.</p>

Hamamatsu Photonics introduces the FTIR Engine C16511-01, a state-of-the-art near-infrared spectrometer designed for rapid and accurate data acquisition in demanding industrial environments.

Compact, High-Speed Spectroscopy for Real-Time Applications: The FTIR Engine C16511-01

<p dir="ltr" id="isPasted">Monitoring pressure and flow in pneumatic systems is critical, as these statistics directly affect their efficiency and safety. You need to be sure that you select the correct hose diameter in order to achieve the right pressure and flow rates. This is made easier by the availability of online calculation tools.</p><p dir="ltr">A simple experiment can demonstrate how hose diameter affects airflow. If you try breathing through a straw, you’ll soon realise how hard it is to force a large quantity of air through such a small diameter tube. To make it through to the other end, you have to blow very gently, at a low pressure. If you try breathing hard or under greater pressure, the air won’t have sufficient space to travel to the other end. So, if you want a greater airflow, you’ll have to use a bigger straw. You can try it with different-sized straws to see how expanding the diameter makes the airflow easier.&nbsp;</p><h2 dir="ltr">Pressure Vs Flow</h2><p dir="ltr">Pressure and flow have a dynamic relationship, which is directly affected by hose diameter.</p><h3 dir="ltr">Pressure</h3><p dir="ltr">Pressure is a physical force which is produced by compressing an air or gas into a more limited space. There are various subdivisions of pressure, including static, dynamic and total pressure, where total pressure is the sum of the first two. Static pressure refers to any gas or fluid that’s not moving, while dynamic pressure is the opposite, where the gas or air flows with some velocity.</p><h3 dir="ltr">Flow</h3><p dir="ltr">In a pipeline or pneumatic system, flow refers to the quantity of gas or fluid passing through a specific region of the hose or pipeline in a given amount of time. While there are subdivisions such as mass or volume flow, pneumatics usually defines flow rate as the volume of air flowing through a cross-section of hose in a measured amount of time. This is typically expressed in units of measurement like cubic feet per second, minute or hour.</p><h3 dir="ltr">Hose Or Pipe Diameter</h3><p dir="ltr">Hose or pipe diameter indicates the size, but it may refer to either the inner, outer or nominal diameter. Nominal diameter (DN) is the most frequently used in pneumatics and fluid transmission, as it helps to standardise measurements across the world. This facilitates the compatibility of components like flow meters and hose or piping products manufactured by different countries. Hose diameter directly affects <a title="Pneumatic Systems" href="https://www.rowse-pneumatics.co.uk/blog/post/improving-airflow-efficiency-in-pneumatic-systems" target="_blank">airflow in pneumatic systems</a> and the hose’s carrying capacity.&nbsp;</p><h3 dir="ltr">ID And OD</h3><p dir="ltr">Hoses often specify both the internal diameter (ID) and outer diameter (OD), but the stated size often refers to the ID. This is because that measurement defines the inner space through which the air will flow, whereas the OD can vary according to the thickness of the hose walls. This, in turn, depends on what they’re made of, whether they have insulation or reinforcing materials to make them stronger. The hose’s ID is, therefore, the critical measurement of diameter that determines its flow capacity.</p><h3 dir="ltr">Nominal Diameter</h3><p dir="ltr">To further confuse the issue, pipes and hoses are often identified by a trade standard measurement in millimetres, known as the nominal diameter (DN). This is a dimensionless whole number, which has only a tenuous relationship to the hose’s actual size. For example, a 200mm or 8-inch nominal diameter pipe size can represent a range of hoses, pipe components or tubing of up to 220mm. The DN number relates to the physical ID of the bore or the OD of a hose’s end connections.</p><p dir="ltr">The original term was Diametre Nominel, referring to the metric standards established by the International Standards Organization, which is why it’s DN and not ND. You might also see the American hose specification NPS, which stands for nominal pipe size, which is measured in inches. This NPS shouldn’t be confused with the acronym referring to thread types, which stands for National Pipe Thread Straight.</p><h2 dir="ltr">The Relationship Between Flow Rate, Pressure And Hose Diameter</h2><p dir="ltr">An equation formulated by Swiss physicist and mathematician Daniel Bernoulli in 1738 is known as&nbsp;<a title="Bernoullis Principle" href="https://www.britannica.com/science/Bernoullis-theorem" target="_blank" rel="nofollow noopener">Bernoulli’s principle</a>. This demonstrates that increasing the flow rate will produce a corresponding decrease in pressure, while the opposite is also true. So, increasing the pressure in a pneumatic hose will cause a corresponding reduction in airflow. Bernoulli's principle for measuring airflow forms the basis of differential pressure flow meters. You might come across another equation that affects flow rate, called Poiseuille’s law, but this is more applicable to viscous fluids than to air.</p><p dir="ltr">You might also see the term ‘burst pressure’ listed among the hose specifications, which refers to the maximum pressure the hose can endure before it ruptures, as air can no longer flow through it. Many commercial hoses are manufactured with a safety margin of three to one, which means that the burst pressure is generally three times the level of the specified rating. So, if you see a hose rated at a burst pressure of 900 psi or 63 bar, it indicates that its working pressure level is 300 psi or 21 bar.&nbsp;</p><h2 dir="ltr">The Importance Of Correctly Sized Hoses</h2><p dir="ltr"><a title="Hose" href="https://www.rowse.co.uk/blog/post/how-to-choose-the-right-air-hose" target="_blank">Choosing the correct size of hose</a> for your pneumatic system is critical for maintaining adequate airflow, but there are other crucial measurements that also affect the performance of your pneumatic system. Starting with the compressor, other components, such as FRL combinations and fittings, must all be correctly sized for maximum efficiency. Pneumatic hose fittings, for example, have an unexpected effect on flow rates, often causing a pressure drop where they compress the hose into the joint.&nbsp;</p><p dir="ltr">Some fittings have a surprisingly small diameter, especially quick-connect fittings, which allow much less airflow. If you want to get the best out of your compressed air system, any restriction anywhere in the system could have a significant impact. Reduced airflow will degrade the overall performance of the application, and you’ll find you’re wasting energy and money to run it.&nbsp;</p>

Industrial pneumatic systems rely on two important parameters when specifying pipes and hoses: pressure and flow. Both of these are directly related to pipe diameter, and a number of complex equations have been worked out for calculating the relationship between them.

How Does Hose Diameter Affect Air Flow In Pneumatic Systems?

<p dir="ltr" id="isPasted">The number and types of valves have grown immensely, contributing much to the safety and performance of industrial operations.&nbsp;</p><h2 dir="ltr">The Most Common Types Of Valves</h2><p dir="ltr">The most common types of valves used in industry include ball valves, globe valves, butterfly valves, gate valves and check valves. So let’s look at their usual applications, plus their advantages and disadvantages.</p><h3 dir="ltr">Ball Valves</h3><p dir="ltr">Ball valves are self-explanatory. They use a ball that allows a junction to be open, closed or partially blocked to control the flow of air or other fluid substances through a system. They’re most common in flow and pressure control applications for gases and liquids, including corrosive fluids and slurries.</p><h4 dir="ltr">Advantages</h4><ul><li dir="ltr"><p dir="ltr">Ball valves are ideal for compressed air and gases, providing a reliable and leak-proof seal.&nbsp;</p></li><li dir="ltr"><p dir="ltr">They can handle temperatures up to 200°C and pressures up to 700 bars.&nbsp;</p></li><li dir="ltr"><p dir="ltr">Their structure is simple, with a compact and low-maintenance design that doesn’t need lubrication.</p></li><li dir="ltr"><p dir="ltr">They open and close rapidly and offer multi-way design flexibility.</p></li><li dir="ltr"><p dir="ltr">They’re the most cost-effective valves, with a range of convenient sizes.&nbsp;</p></li></ul><h4 dir="ltr">Disadvantages</h4><ul><li dir="ltr"><p dir="ltr">Ball valves are unsuitable for precision throttling applications. Their throttling characteristics are poor and can cause erosion on the valve seat.</p></li><li dir="ltr"><p dir="ltr">Any residual particles in fluid media are liable to collide with and stick to surfaces, causing abrasion, leakage and other problems.</p></li></ul><h3 dir="ltr">Globe Valves</h3><p dir="ltr">Globe valves are one of the most popular and widely used industrial valves. &nbsp;They regulate airflow or fluids using linear motion, adjusting the position of a mobile plug or disc around a stationary ring seat. They consist of a spherical body, split in half around an internal baffle that usually runs parallel to the length of the valve. You’ll find them most commonly in high-temperature applications, where they function as general-purpose flow control valves.</p><h4 dir="ltr">Advantages</h4><ul><li dir="ltr"><p dir="ltr">Globe valves offer good full-closing and throttling characteristics, so they’re most often used in throttling applications.</p></li><li dir="ltr"><p dir="ltr">Their opening and closing time is shorter than other types.</p></li><li dir="ltr"><p dir="ltr">It’s easy to seat the body ring of a globe valve.</p></li><li dir="ltr"><p dir="ltr">They can also function as stop-check valves.</p></li><li dir="ltr"><p dir="ltr">They provide effective flow control with positive shut-off.</p></li><li dir="ltr"><p dir="ltr">Globe valves have a better ability to&nbsp;<a title="Minimise Leakage" href="https://www.rowse.co.uk/blog/post/how-to-find-leaks-in-pneumatic-systems" target="_blank">minimise leakage</a>.</p></li></ul><h4 dir="ltr">Disadvantages</h4><ul><li dir="ltr"><p dir="ltr">Globe valves often have higher pressure relief.</p></li><li dir="ltr"><p dir="ltr">A greater force is required to close them under high pressure, which may require an actuator with significant torque.</p></li></ul><h3 dir="ltr">Butterfly Valves</h3><p dir="ltr">Butterfly valves have limited control capabilities as they’re operated manually by turning a handle through 90°. They’re specifically designed for flow regulation, employing a metal disc that can be turned perpendicular to the flow to close it off. Fluid flow can be regulated by making intermediate rotations. You’ll find butterfly valves in many different industrial applications, most commonly in food processing, chemical and pharmaceutical services.</p><h4 dir="ltr">Advantages</h4><ul><li dir="ltr"><p dir="ltr">Butterfly valves offer great flexibility. They can be operated pneumatically, manually or electronically using gears, handles, or actuators. &nbsp; &nbsp;</p></li><li dir="ltr"><p dir="ltr">They’re extremely accurate, highly reliable and need little maintenance.</p></li><li dir="ltr"><p dir="ltr">They can handle corrosive liquids at low pressures and temperatures.</p></li><li dir="ltr"><p dir="ltr">They can be used for throttling.</p></li><li dir="ltr"><p dir="ltr">Butterfly valves can be installed or removed without dismantling the pipe system.</p></li></ul><h4 dir="ltr">Disadvantages</h4><ul><li dir="ltr"><p dir="ltr">You won’t get tight shut-offs with a butterfly valve.&nbsp;</p></li><li dir="ltr"><p dir="ltr">Even when fully open, part of the disc will still be exposed to the flow.</p></li></ul><h3 dir="ltr">Gate Valves</h3><p dir="ltr">Gate valves are linear motion valves used for the control and isolation of flow. They are most commonly employed for simple on-off applications. They operate by lifting a rectangular or circular gate out of the path of the fluid, so the flow is then unobstructed. The valve dimensions are determined by the pipeline’s bore diameter, which is the same as the gate opening. They’re suitable for high-pressure applications and high-temperature environments.</p><h4 dir="ltr">Advantages</h4><ul><li dir="ltr"><p dir="ltr">Gate valves offer minimal pressure loss due to their laminar flow principle.</p></li><li dir="ltr"><p dir="ltr">When fully open, gate valves provide tight sealing and a low-pressure drop.</p></li><li dir="ltr"><p dir="ltr">They offer very low friction loss.</p></li><li dir="ltr"><p dir="ltr">You can use them in a circuit in both directions.</p></li><li dir="ltr"><p dir="ltr">Gate valves are cost-effective and help save energy.</p></li></ul><h4 dir="ltr">Disadvantages</h4><ul><li dir="ltr"><p dir="ltr">Gate valves may cause vibrations.</p></li><li dir="ltr"><p dir="ltr">You can’t open or close them quickly.</p></li><li dir="ltr"><p dir="ltr">&nbsp;They may leak if irregular high-temperature changes in the system put a load on the pipe’s valve end.</p></li><li dir="ltr"><p dir="ltr">Their valve seating surfaces are tricky to operate, maintain and repair.</p></li></ul><h3 dir="ltr">Check Valves</h3><p dir="ltr">Check valves allow a single direction of flow while preventing backflow in the opposite direction. For this reason, they’re also called non-return valves (NRV). You’ll find them in many manufacturing processes, where they’re commonly used to protect compressors and pumps. They offer an additional layer of protection to a system and can serve as a reliable backup.</p><h4 dir="ltr">Advantages</h4><ul><li dir="ltr"><p dir="ltr">Check valves have a simple design and versatile materials.&nbsp;</p></li><li dir="ltr"><p dir="ltr">They operate automatically without any manual or automated intervention.&nbsp;</p></li><li dir="ltr"><p dir="ltr">The flow velocity controls opening and closing, with the valve opening further as the flow rate increases.</p></li><li dir="ltr"><p dir="ltr">They sustain pressure and maintain the intended flow direction by preventing backflow.</p></li><li dir="ltr"><p dir="ltr">They maintain system integrity.</p></li></ul><h4 dir="ltr">Disadvantages</h4><ul><li dir="ltr"><p dir="ltr">You can’t use check valves in pulsating systems where the flow fluctuates.</p></li><li dir="ltr"><p dir="ltr">The closing element may crash, resulting in excessive wear and potential damage.</p></li></ul><h2 dir="ltr">More And Different Valves</h2><p dir="ltr">You have to consider your application carefully when deciding&nbsp;<a title="Valves" href="https://www.rowse.co.uk/blog/post/choosing-the-right-process-control-valves" target="_blank">which valves to use</a>. Influencing factors include the fluid medium, operating conditions, flow control requirements and cost. In this article we’ve explained the most common types of valves, but you’ll find many more on the market.&nbsp;</p><p dir="ltr">The demand for industrial valves is increasing due to technological advances in valve design and materials. These include far more complex&nbsp;<a title="Valve Control" href="https://www.siemens.com/us/en/products/buildingtechnologies/hvac/valves-actuators.html" target="_blank" rel="nofollow noopener">electronic and intelligent valve control</a> systems to meet the need for progressively intricate industrial processes.</p>

Valves are crucial to many industrial applications. They control, direct and regulate the flow of various substances through a network of passages by opening, closing or partially blocking these pathways. You’ll find valves in most industrial sectors, handling different types of gases and fluids.

What Are The Most Common Types Of Valves?

<p dir="ltr" id="isPasted">Various other standards also exist, including those set up by the British Standards Institution (BSI), the European Committee for Standardisation (CEN), the American Society of Mechanical Engineers (ASME) and many more.&nbsp;</p><p dir="ltr">Here we will look specifically at the ANSI valve standards, which represent the primary US standards prevailing in the valve industry.&nbsp;<a title="ANSI" href="https://www.ansi.org/" target="_blank">ANSI</a> standards don’t overshadow those established by ISO or API but represent guidelines that integrate, enhance and solidify them. They’re effectively the bridge that joins the universality of the ISO to the robust regulations of the ASME. This enables free technological exchange and seamless international cooperation.</p><h2 dir="ltr">Why Are Standards Important?</h2><p dir="ltr">When a component like a pneumatic valve is categorised for standards compliance, it’s because it has a recognisable set of features and behaviours. These standards define&nbsp;<a title="Operate" href="https://www.rowse-pneumatics.co.uk/blog/post/how-do-pneumatic-valves-work" target="_blank">how they operate</a> and the parameters critical to their manufacture to ensure this operation is uniform worldwide. Industries rely on these standards to confirm the universal compatibility of their products and thus streamline their global operations. This is important for several reasons:</p><ul><li dir="ltr"><p dir="ltr">It prioritises safety and requires manufacturers and suppliers to distribute valves that won’t endanger lives or equipment.</p></li><li dir="ltr"><p dir="ltr">It simplifies manufacturing and production and makes components easily available worldwide.</p></li><li dir="ltr"><p dir="ltr">It brings all the major industrial players under the same regulatory umbrella and speeds up the adoption of new policies and innovations.</p></li><li dir="ltr"><p dir="ltr">It contributes to price regulation within a globally uniform margin, preventing exploitation by rogue manufacturers.</p></li></ul><h2 dir="ltr">What Features Define ANSI Specification Valves?</h2><p dir="ltr">Some of the designated ANSI specification categories are a combined reference to ASME regulations, which can confuse. These are called “ANSI class” ratings and relate to separate parameters. You’ll often see numbers like ANSI 150, 300, 600, etc, which are a class of ratings derived from the ANSI standard ASME B16.5-2020. This is also sometimes abbreviated to ANSI + the ASME regulation numbers, such as:&nbsp;</p><ul><li dir="ltr"><p dir="ltr">ANSI B16.34 – valves: threaded, flanged, plus welding end</p></li><li dir="ltr"><p dir="ltr">ANSI B16.10 – valve dimensions: end-to-end and face-to-face</p></li><li dir="ltr"><p dir="ltr">ANSI B16.5 – &nbsp; pipe flanges and flanged fittings</p></li><li dir="ltr"><p dir="ltr">ANSI B16.1 – &nbsp; pipe flanges and flanged fittings: cast iron</p></li><li dir="ltr"><p dir="ltr">ANSI B16.25 – butt-welding ends</p></li></ul><p dir="ltr">Sometimes, the term ANSI is combined with other designations, such as ANSI/ISA or ANSI/FCI. Other combinations include ANSI numbers based on regulations established by the API, where the API part is not necessarily included.&nbsp;</p><p dir="ltr">For instance, ANSI 599 relates to steel plug valves with specific types of ends or flanges originally determined by API 599. Similarly, ANSI 11v6 or 11v7 are applied to gas lift valves. The designation comes from API RP 11v6 and 11v7, which established the recommended practice for installation, setting, repair and testing of this type of valve. The ANSI tag acts as the umbrella designation for an earlier group of accredited bodies that set up the initial standards.</p><p dir="ltr">Confused? The ANSI standards are based on the ASME, API and other regulations, and govern aspects of valves and their components. Their remit covers materials, dimensions, tolerances and pressure-temperature ratings, including methods of marking, testing and designating valve structures. So a component rated as ANSI 150 or 600, for instance, uses a common shorthand designation for a particular class of ASME-regulated standards.</p><h2 dir="ltr">Some Examples Of ANSI Specification Valves</h2><p dir="ltr">Most ANSI specification valves fall into categories such as ball valves, butterfly valves, check valves, gate valves, plug valves, globe valves and strainers. Within these categories, each type of valve will be subdivided into those made of different materials, such as brass, cast iron or steel. Steel itself can be forged, carbon, lugged or stainless. The construction of various types of valve can include Y-section, T-section, angled, rising stem and screw-down non-return (SDNR).&nbsp;</p><p dir="ltr">In these cases, they’ll have an ANSI number like 150, 300, or 600, which refers specifically to the class of flanges used for the valve. All the classes fall within the ASME 16 group of regulations. Additional standards such as ISO 5211 or EN 558 may also be applied to the whole valve structure, but the ANSI standard is applicable only to the flange components.&nbsp;</p><p dir="ltr">For example, a forged steel ANSI 150 gate valve may be designed to API 602 specifications with ANSI class 150 flanges. More complex valves may be governed by several different standards, which each apply to different components. For example, a carbon steel ANSI 600 globe valve falls within the ANSI 600 class of flanges, designed under the original API 600 regulations. It also has a rising stem and stainless steel disc, and its material composition is governed by BS1414 and ASME B16.34.</p><h2 dir="ltr">Why Do You Need To Standardise Valve Manufacture?</h2><p dir="ltr">Valves of many types are vital to industry. They enable the flow and transport activities demanded by pneumatics, hydraulics and other systems. They play a very important role, and because the demand for valves is always increasing, uniform production standards are imposed. Valve standards ensure consistently safe and efficient performance in a high-pressure environment where you can’t afford any room for error. The lifespan of your pneumatic system and pipe network may depend on the accurate selection of a valve and its application.</p><p dir="ltr">ANSI standards provide detailed insight and information for manufacturers, suppliers and end users. You’ll find the type of materials to be used and main specifications such as dimensions, pressure ratings, cover design, precise test requirements and other examination requirements. Whether it’s cast iron or stainless steel, butterfly or ball valve, with flanged or butt ends, ANSI standards ensure that it meets the stringent design and safety requirements of an accredited institution. ANSI standards ensure that complying components also fit seamlessly into your&nbsp;<a title="Architecture" href="https://www.rowse.co.uk/blog/post/choosing-the-right-process-control-valves" target="_blank">process control architecture</a>, wherever you are in the world.</p>

Valve standards fall into three main categories depending on whether they are established by the International Organisation for Standardisation (ISO), the American Petroleum Institute (API) or the American National Standards Institute (ANSI). 

What Are ANSI Specification Valves?

<p id="isPasted">Quality control in manufacturing is no easy task and too often involves learning from hindsight. By the time parts churn off the assembly line and undergo inspection, it might be too late to catch problems. Waiting until the tail end of the manufacturing process to ensure defect-free products wastes a lot of resources, time, and money.</p><p>But there is an effective alternative.</p><p>Imagine, for example, a welding process where a thermal camera closely tracks the heat signature of the product as it is being manufactured. If the part is being welded incorrectly, an alert goes off immediately so the process can course-correct in real time. Such game-changing efficiencies in manufacturing are beginning to take root, based on advanced technologies like machine learning (ML), and are part of an overarching investment in predictive resolution.</p><h2>The Evolution of Predictive Maintenance</h2><p>If the term predictive resolution sounds familiar, it might be because it's closely related to its more familiar cousin: predictive maintenance.</p><p>The speed with which data-driven technologies have shaped manufacturing in just a few short years is astonishing. Iterations of newer evolutions of digital transformation, like Industry 4.0 and Industry 5.0, have benefited the sector in many ways, especially in facilitating predictive maintenance.</p><p>Predictive maintenance is one of the primary tenets of Industry 4.0 and runs on the theory that we can use data about equipment health to prevent serious failures before they happen. By studying machines' vibration or heat signatures and inputting this data into ML models, manufacturers can tell when equipment will fail and intervene to avert disaster. Such proactive corrections save expensive downtime, traditionally a significant challenge in the sector.</p><h2>Moving to Predictive Resolution</h2><p>Predictive maintenance is a subset of predictive resolution. The same vast suite of advantages that predictive maintenance delivers applies to predictive resolution. But the two are different in a few fundamental ways.</p><p>Predictive maintenance tells manufacturers when equipment is about to fail. Predictive resolution goes a few steps further and suggests ways to fix the problem. So, while predictive maintenance addresses the&nbsp;<em>ifs</em> and&nbsp;<em>whens</em>, predictive resolution tackles the&nbsp;<em>hows</em>.</p><p>Predictive maintenance has a much tighter focus, with its sights set on manufacturing equipment. Predictive resolution, on the other hand, covers most business operations—from supply chain management to worker scheduling and process improvements, in addition to equipment health. The welding operation fix using thermal cameras mentioned earlier is an example of predictive resolution addressing process inefficiencies. Machines with real-time monitoring equipment can address production line delays immediately and fix bottlenecks to meet daily and even hourly production quotas.</p><p>Predictive resolution does not just find what is wrong with manufacturing equipment; it finds—and suggests fixes for—what is not working throughout relevant business operations.</p><h2>The Technology and Infrastructure Driving the Evolution</h2><p>Where manufacturing was an opaque process before, digital transformation and data have made&nbsp;<iframe id="66cd9c945347023b21649503" width="250" class="specs-iframe" height="440" src="https://wevolver.com/iframe/specs/analog-devices-max32670-xx-ardz-development-platforms?iframe=true" frameborder="0" scrolling="no" data-lf-form-tracking-inspected-kn9eq4roawkarlvp="true" data-lf-yt-playback-inspected-kn9eq4roawkarlvp="true" data-lf-vimeo-playback-inspected-kn9eq4roawkarlvp="true"></iframe> operations more transparent. As a result, it's easier to find and fix inefficiencies.</p><p>Arguably, one of the biggest game-changers for the industry has been developing and deploying IIoT sensors at scale. When machines have sensors, they can "communicate," and manufacturers can use that information to make data-driven decisions. But IIoT alone is not enough. The sheer glut of data the IIoT generates can easily lead to manufacturers drowning in too much information. However, technologies such as AI help OEMs make sense of the data. When fed into predictive ML models, the data is able to deliver predictive maintenance.</p><p>Now, the breaking of data silos between various departments in a manufacturing company, along with the ability to read unstructured data, is leading to further advancements in how the industry makes data-driven decisions—through predictive resolution.</p><p>And the efficiencies have moved beyond machines on the production floor. Generative AI models can train on proprietary information stored in manuals, equipment maintenance logs, emails, and more to create training modules for employees using natural language processing (NLP). Less experienced workers can query generative AI models to access repair instructions and record logs in a central location, so data is not locked and siloed.</p><h2>The Future Impact of Predictive Resolution</h2><p>One of the biggest challenges for the manufacturing sector has traditionally been usable and relevant data availability. Now that the technologies are in place, expect predictive resolution to help manufacturers in a variety of new and unique ways.</p><p>The use cases for predictive resolution abound.</p><p>Product servitization, for example, where OEMs lease instead of sell equipment, can use predictive resolution for a steadier source of revenue. Manufacturers can access data from this leased equipment to further fine-tune predictive AI models.</p><h2>Conclusion</h2><p>Manufacturers are already gaining reduced downtime and cost savings with predictive maintenance. In addition to root cause analysis and predictive maintenance, predictive resolution has a much more sweeping scope in finding and fixing problems beyond machines. OEMs who have paved the way with digital transformation stand poised to reap the benefits from this holistic approach.</p>

Source: William / stock.adobe.com; generated with AI

Manufacturers are already gaining reduced downtime and cost savings with predictive maintenance. In addition to root cause analysis and predictive maintenance, predictive resolution has a much more sweeping scope in finding and fixing problems beyond machines.

Industry 4.0

ORGANIZATIONS.

SHAPING THE INDUSTRY.

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