Features

New Lateral Excitation Test Stand from MB Dynamics reduces experimental modal survey measurement errors

MB Dynamics, field-proven industry experts in the design, manufacture and supply of vibration test systems and equipment, has announced the global market introduction of its Lateral Excitation Test Stand.

The MB Dynamics Lateral Excitation Test Stand can be used to help reduce measurement errors which can arise during experimental modal surveys. It does so, by offering versatile modal exciter suspension and support, as well as by applying force to a test structure in one of two unique ways: either horizontally, into the side of a test structure; or, obliquely, beneath a test structure. The stand further allows exact modal exciter positioning, in either horizontal or vertical direction, while still accommodating a maximum suspended load of up to 60 kg.

Designed by 40-year global industry experts in experimental modal analysis, the stand offers seamless compatibility with MB Dynamics’ own industry best-selling MODAL 50A and MODAL 110 exciter systems, of which more than 1,300 remain successfully installed in the field. The main structural parts of the Lateral Excitation Test Stand are constructed of a lightweight, durable, and rugged aluminium, while its rubber-footed adjustable steel legs offer added stability.

The Lateral Excitation Test Stand may also be used in combination with tensioned piano wire or compression stingers to help reduce measurement errors arising from unmeasured transverse forces. This, given that tension-only stingers can be used to apply axial forces without the typical sideloads which can otherwise contaminate measured data. When a piano wire stinger is properly suspended via four supplied turnbuckles, it connects to a test item’s force sensor via the modal exciter’s through-hole and corresponding base, along with any required inertial masses. The piano wire stinger then wraps around a pulley. Any required static preload force is applied via a small hand winch, with a series of quarter-turn handles used to secure the lateral arm and pulley. A low gear-ratio hand crank facilitates easy vertical adjustments of the suspended stinger over a range of 305 mm to 1415 mm. Upon application of sufficient static preload forces, as to exceed dynamic force, the piano wire stinger is secured by tightening the Dumore Chuck within the exciter’s moving element. As the Lateral Excitation Test Stand allows the modal exciter to be set atop its lateral arm and rotated more precisely about its trunnion base, the MODAL 50A or MODAL 110 exciter system can therefore provide excitation at virtually any angle, with up to a 300 mm horizontal adjustment rate, and with exciter motion properly isolated from the test stand.

Typical applications for the MB Dynamics Lateral Excitation Test Stand include virtually any experimental modal survey application incorporating the company’s own MODAL 50A and MODAL 110 exciter systems. These include, though may not be limited to, aircraft and automotive testing, civil engineering, power generation, and test & measurement applications. For more information about the new Lateral Excitation Test Stand, or MODAL 50A and MODAL 110 exciter systems, please contact MB Dynamics at +1-216-292-5850, sales@mbdynamics.com, or visit www.mbdynamics.com

About MB Dynamics, Inc:

Founded in 1939, the Cleveland, Ohio-based MB Dynamics has long distinguished itself as a total solutions provider for vibration test requirements. The company applies its vast wealth of experience in vibration testing and instrumentation to offer a truly one-of-a-kind innovative approach to customer problem-solving in automotive, aerospace, industrial, laboratory R&D, civil engineering, modal and structural testing, general test and measurement, academia, and other sectors. All solutions offered by MB Dynamics are further accompanied by the necessary hardware and software to ensure seamless integration, along with the value-added benefits of full engineering support, offered by one of the industry’s most experienced engineering teams. This local expertise is made available to MB Dynamics customers in more than a dozen countries. Visit www.mbdynamics.com to learn more.

Author: Molly Bakewell Chamberlin, President / Sensors Industry Subject Matter Expert, Embassy Global, LLC

Yokogawa to undertake proof of concept test of 5G, Cloud, and AI for remote control of plant systems with NTT DOCOMO

Yokogawa has signed an agreement with NTT DOCOMO (DOCOMO) to jointly undertake a proof of concept test (PoC) for the remote control of a plant system by utilising 5th generation mobile communications (5G), the cloud, AI, and other technologies.

The PoC will involve the use of cloud-based Yokogawa AI for plant control and a 5G communication module mounted on a three tank level control system to remotely control the water level. This test aims to demonstrate the ease with which companies in the chemical, oil, and other process industries will be able to modify their existing systems to make use of cutting-edge 5G autonomous control devices with the latest cloud-based AI. With the goal of achieving autonomous control in plants in the future, Yokogawa will work together with DOCOMO to verify and optimise this technology.

Driven in part by the ongoing COVID-19 pandemic, there has been a dramatic increase in the need for the improvements in production safety and efficiency that can be achieved through autonomous plant control. In a survey of process industries that Yokogawa conducted last year, 64% of respondents said they anticipated that plants will have fully autonomous operations by 2030, and that autonomous control mechanisms using AI and other technologies and not requiring human intervention will become increasingly common. However, given the latency in communication that occurs between the cloud and device controllers when conventional wireless communication is used, there have been major technological challenges when it came to autonomous remote control of plant systems.

This PoC will examine whether the technical challenge of achieving low latency can be solved by using DOCOMO’s high-speed, large-capacity, low-latency 5G communications network, the DOCOMO Open Innovation Cloud, which offers multi-access edge computing (MEC) to achieve low-latency and meet other such requirements of the 5G era, as well as other cloud technologies. Yokogawa has already completed a trial of an autonomous control system based on its proprietary AI technology that successfully controlled the water level in a three tank level control system, a task that is generally acknowledged to be very difficult, and the technology that was used is considered within the industry to be among the most advanced of its type. In the PoC, by the end of March 2022, Yokogawa will work with DOCOMO to construct a demonstration environment for the cloud-based remote control of the water level in a three tank level control system using the AI, and undertake, among other things, comparison and evaluation of communication performance between LTE and 5G.

Based on its in-depth knowledge of plant control and operational technology, IT, and industry, Yokogawa is helping customers in a broad range of industries visualise issues that impact every area of their business activities, optimise their operations, and thereby create new value and sustain growth. Through this PoC, Yokogawa will work with DOCOMO to create new value and contribute to the development of not only process industries but all other industries as well.

Kenji Hasegawa, a Yokogawa vice president and head of Yokogawa Products Headquarters, commented, “Yokogawa has long played a leading role in the development of distributed control systems that control and monitor the operation of plant production facilities, and we have supported the growth of a wide range of industries. With a view towards a future in which industries adopt autonomous operations, we are now promoting IA2IA (Industrial Automation to Industrial Autonomy). Through the linking of 5G with the cloud, Yokogawa’s AI, and device controllers, we believe that we can make a great contribution in achieving plants whose systems can be remotely controlled and are fully capable of operating autonomously. Along with NTT DOCOMO, we will work to create further value for our customers.”

J2 Innovations releases Project Haystack 4 open-source library

J2 Innovations, a Siemens Company and a founding member of Project Haystack, today announced the release of Haystack Core, an open-source software library for the latest Haystack 4 open standard which can be used by developers to create new smart building and IoT applications.  Written in TypeScript, the open-source initiative will enable more sophisticated applications to be built with ease and at speed.  Haystack Core paves the way for a host of new solutions that can manage energy usage, reduce carbon emissions and leverage the latest technologies. By using the Haystack Core APIs  J2 Innovations’ OEM and ecosystem partners will be able to  create their own Haystack based devices more easily, and faster.

Now in its tenth year since inception, Project Haystack is an open-source initiative that streamlines the way data from the Internet of Things is handled to solve interoperability issues between devices and equipment.  With an emphasis on standardising semantic data models, and using web services, its mission is to unlock the value from the vast quantity of data being generated by the smart devices that permeate our homes, buildings, factories and cities.  Applications have been developed for automation, control, energy, HVAC, lighting and other environmental systems.

Today Project Haystack encompasses the entire value chain of building systems and related intelligent devices.  Founding member companies include Siemens, ConserveIT, J2 Innovations, SkyFoundry, Legrand, and Lynxspring.  Associate members include many other building-related suppliers and service providers of all types.  Novel and innovative ways to apply Haystack are constantly evolving.  J2 Innovations has recently contributed Haystack JSON, a new JSON encoding format that aims to improve upon the existing encoding format by making Haystack data more accessible for developers.

“It’s significant that we’re able to announce this just before Haystack Connect 2021.  The initiative has the potential to take Haystack to a different level of sophistication in the smart buildings and IoT applications world and beyond,” said Gareth Johnson, Senior Cloud Architect, and creator of the library, at J2 Innovations.  “This is the first library written in TypeScript that fully supports Haystack 4.”

“Haystack has always been about being an open, productive, and powerful development environment and we think this will inspire the community to innovate and build leading-edge software applications that will tap into the vast potential of the eco-system.  And the more interesting apps being created will mean the more powerful and pervasive Haystack will become in our lives.”

John Petze, Executive Director of Project-Haystack.org said: “This substantial addition to the library of Haystack tools and software applications demonstrates the continued efforts of the community to advance and streamline the use of smart device data. J2 Innovations has been part of the Haystack journey since the founding of the effort in 2011. We are excited to see this major contribution!”

The Haystack Core libraries provide a suite of powerful APIs that make it easy for working with Haystack data. This includes an implementation of the Haystack data model, filter compilation, unit database, Zinc, Trio and JSON support, client network support with automatic watch management and specialised Haystack React hooks.

The open-source code can be downloaded from GitHub, the largest and most advanced development platform in the world: https://github.com/j2inn/haystack-core

Jason Briggs, CTO, J2 Innovations, and Gareth Johnson, Senior Cloud Architect, J2 Innovations will unveil and deliver a presentation on Haystack Core at Haystack Connect 2021 on May 4 2021 at 14:00 EST. Gareth will also deliver a session on the new Haystack JSON encoding (a.k.a Hayson) just after on 4 May at 14:30 EST.  The presentation will cover utilisation with JSON and OpenAPI schema to create robust Haystack-enabled REST APIs and more.

Haystack Connect 2021 is organised and produced by the Project Haystack Organisation—an open-source community of people and companies who share the vision that a connected, collaborative community can move the industry forward in ways that no single supplier can.  The event builds on the inspiration and mission of the community to address the challenges of making smart device data work seamlessly across applications of all types through the adoption of a standard approach to semantic modelling of equipment systems and their data.

Senseye forms new steering group

Senseye, the Machine Health Management company, has launched a product steering committee with expert input from a wide range of blue-chip clients. This select group of senior operational managers has come together to improve the art of maintenance, share best practice, and contribute to the longer term roadmap and vision of Senseye.

The first meeting in March this year included among others representatives from Alcoa, one of the world’s largest producer of aluminium, Smurfit Kappa, Europe’s leading corrugated packaging company and Schneider Electric. It was led by Robert Russell, CTO and co-founder of Senseye, who was recently named as one of the 100 People in Maintenance that you should follow by CMMS experts UpKeep.

“The Senseye User Group is a great opportunity to discuss the future roadmap, challenges and innovations around deploying a Predictive Maintenance solution,” said Steve Parr, Engineering Director at Smurfit Kappa. “We are hoping the skills, knowledge and experience of so many key stakeholders from a diverse base of manufacturing companies can bring new insights and perspectives.

“It’s providing a good opportunity to question current practices, seek new ideas and overcome barriers to success that otherwise may challenge the effective deployment of maintenance improvement solutions. We are really looking forward to being part of the user group and working with all the other members in shaping the future of Senseye support.”

The meetings will be held three times a year and will focus on a different topic each time. Under the heading From Factory to Senseye, the topic of this discussion was how to get the right data from the shop floor to the cloud. It featured Victor Voulgaropoulos from research and advisory firm Verdantix as a guest presenter.

Low-cost sensor technology, the use of smart sensors, edge and local processing, communications between factory and/or site to the Cloud, as well as the eternal question of cost and ROI were just some of the main conversation topics.

“Our group confirmed that the cost of acquiring data from the shop floor is a key barrier to the expansion of industry 4.0 at the moment”, said Robert Russell. “The maturing of low-cost wireless sensor technology will help accelerate the adoption of PdM and ease the way for further digitalisation.”

Simon Kampa, CEO of Senseye said: “Most companies say they listen to their customers. At Senseye we wanted to take this a step further and get experts to come together as a network and community to openly exchange ideas and discuss maintenance problems. Our aim is to break out of the knowledge silos and share information on best practice across different industries and with organisations at different levels of maturity.

“The ongoing discussions in the community will directly inform our product roadmap. They will help to prioritise and fine tune product development in the long term. The views and problems of the group are a very good indicator for the needs of the wider industry.”

Topics for future discussion in the steering group will include spares optimisation, lifecycle management, servitization, root cause analysis, process simulations, and new business models like pay-per-use.

Renesas and SiFive to develop next-generation high-end RISC-V solutions for automotive applications

Renesas and SiFive have announced a strategic partnership to jointly develop next-generation, high-end RISC-V solutions for automotive applications. The partnership will also include SiFive licensing the use of their RISC-V core IP portfolio to Renesas.

“RISC-V is an important element in providing additional capabilities and options for new and existing customers,” said Takeshi Kataoka, Senior Vice President, General Manager of Automotive Solution Business Unit at Renesas. “We are very excited to work with SiFive as their lead partner to develop next-generation semiconductor solutions through the collaboration of our accumulated expertise in the automotive field, and SiFive’s high-end RISC-V technologies.”

“We are excited to collaborate with Renesas to develop next-generation automotive solutions powered by the SiFive Intelligence platform,” said Patrick Little, Chairman and CEO, SiFive. “Our roadmap of advanced, high-performance RISC-V processor cores and AI accelerators will deliver significant core performance increases with the capabilities needed to meet Automotive application requirements, along with enhanced AI capabilities to power scalable, workload-accelerated solutions.”

Renesas provides automotive solutions including ADAS, Autonomous Driving (AD), Electric Vehicles (EV), and Connected Gateway (CoGW) to customers all over the world by utilising its diverse portfolio of industry-leading microcontrollers (MCUs) and system-on-chips (SoCs), as well as analog and power products.  With a safe, comfortable, and environmentally-conscious society of future mobility in mind, Renesas is exploring the use of next-generation, high-performance RISC-V cores optimised for automotive applications to expand high-end SoC and MCU development capabilities to continue providing innovative and trusted automotive solutions to customers worldwide.

The SiFive Intelligence platform, based on SiFive RISC-V Vector processors with AI ISA extensions, features a differentiated software toolchain to enable the development of scalable solutions for AI and ML applications. SiFive RISC-V processors are pre-integrated with advanced trace, debug, and security solutions compatible with industry tools to simplify heterogeneous integration and migration. The SiFive RISC-V portfolio is silicon-proven and available in leading and advanced manufacturing foundries, offering flexibility for customers and partners.

Farnell shares exclusive discounts and bundle deals for customers this spring

Farnell is offering exclusive discounts to customers across Europe on a range of products from well-known brands including Tektronix, Omega, Omron, Rohde & Schwarz, Keysight, AMETEK and many more. Customers purchasing product bundles can also receive up to 50% off until 30 April 2021. The products included in the exclusive promotion will include components from Farnell’s passive, electromechanical, connector, development board, test, tool and production supply ranges, including:

  • VIRALERT 3 Human Body Temperature Screening System from AMETEK Land: This system uses thermal and visual cameras to provide temperature measurement and facial recognition whilst socially distanced. VIRALERT 3 scans a subject in approximately two seconds to enable seamless monitoring at a facility entrance, minimising delays and queues. This screening system from AMETEK Land is now available to Farnell customers with up to 25% off.
  • Advanced Power Applications Saver Bundle from Tektronix: This bundle of market leading test equipment from Tektronix is available exclusively to Farnell customers and includes an MDO34 Oscilloscope, Probes, 2231A-30-3 Power Supply, DMM6500 Digital Multimeter and KickStart Software. The Advanced Power Applications bundle represents a 20% saving compared to purchasing the products individually.
  • PM5000 Series Power Meters from Schneider Electric: A popular product from the PowerLogic range offering power quality analysis up to the 15th harmonic and flush-mounting. Farnell customers can purchase power meters in the PM5000 range with an exclusive 10% discount.
  • Solder Wire from Multicomp Pro: Specially formulated to complement no clean wave and reflow soldering processes, Multicomp Pro’s lead-free 1.2mm diameter soldering wire is available exclusively from Farnell with a limited time 30% discount.

For more information and the full range of discounts available, visit Farnell’s spring offers page here.

Sensirion and s-peers: using environmental sensors to develop a concept for automated air quality assurance

s-peers has developed an innovative concept with the help of Sensirion to store, analyse and forecast air-quality data.

Air quality and regular ventilation have become highly relevant in pandemic times. Minute droplets (known as aerosols) are emitted not only when coughing or sneezing, but also during normal breathing and when talking. Viruses can be found in these aerosols. Frequent and effective ventilation is therefore more important than ever. The more fresh air, the less exhaled air with possible viruses in a closed room. Optimal air quality also increases concentration and prevents fatigue, headaches or a drop in performance. With the help of s-peers’ concept and the use of Sensirion’s industry-leading environmental sensors, automated monitoring and control of air quality becomes possible. If values rise above a critical threshold, the system sends a signal and prompts the windows to be opened, for example. This ensures that ventilation is not forgotten or is not carried out too late. In addition, air quality is documented, thus ensuring a healthier working environment.

Thanks to the sensor data, it is possible to provide forecasts for when the room is occupied and with how many people then, or at what time it is necessary to ventilate or leave the room. This is particularly relevant for schools, events, libraries or open-plan offices.

What works inside, also works outside

The WHO calls air pollution, especially high concentrations of particulate matter, one of the biggest health risks, on a par with smoking. It is therefore of enormous relevance for companies or cities to measure outdoor air data as well. Reliable and cost-efficient sensors provide immediate feedback when air quality deteriorates. For companies with their own production facilities, early detection of process errors that can lead to environmental pollution is of great interest. It can also increase the safety of production workers. Sensor solutions such as Sensirion’s Nubo Air are already being used in city centres. The Nubo Air enables real-time monitoring of air pollution. Measuring, storing and analysing this data provides policymakers with sound data to make optimal decisions or even optimise air quality for their citizens using intelligent control of traffic lights.

Reserve your seat for the roundtable “Breath in – Data out: Get the Most Data out of Your Sensors” on April 20, 15:00 – 16:00, at SAP NOW – the largest SAP user conference in Switzerland. Matthias Feldle from s-peers AG and Pascal Gerner from Sensirion will jointly present their innovative concept that stores CO2 data, analyses it and uses it for forecasting. They will also discuss how such valuable sets of sensor data can be used to optimise existing business processes and develop new business models.

Register for the roundtable here: https://webapp.spotme.com/welcome/sapnow

ADLINK Technology joins Senseye to enable rapid ROI from predictive maintenance

Senseye, the Machine Health Management company, welcomes ADLINK Technology to the Senseye Ready Partner Ecosystem, enabling customers to utilise ADLINK’s range of machine condition monitoring (MCM) devices to achieve plug and play integration with Senseye’s predictive maintenance software suite (Senseye PdM).

ADLINK Technology Inc., a global leader in edge computing, joins the Senseye Ready ecosystem to offer predictive maintenance solutions supported by the Senseye ROI Lock guarantee. Manufacturing, maintenance and operations managers can now implement predictive maintenance with complete confidence that they will get a minimum 100% return on their software investment.

Senseye Ready hardware and devices offer simple integration with Senseye’s predictive maintenance platform. Customers benefit from a wide choice of compatible equipment to suit their individual requirements and budget.

ADLINK’s range of rugged machine condition monitoring (MCM) devices are pre-configured with its Edge IoT software, allowing the aggregation of asset performance data from multiple sensors at the edge on the factory floor. This data is streamed to Senseye’s cloud-based platform for automated analysis, identifying abnormal behaviour or early signs of known failure modes. By alerting maintenance managers to take action, Senseye helps to avoid costly unplanned equipment shutdowns.

Graham Dunlop, Partner Director – Senseye, comments: “We developed Senseye Ready to provide additional benefit to our customers by simplifying procurement and assuring them access to the very best hardware solutions to increase maintenance efficiencies and avoid unplanned machine downtime. We saw a perfect fit with ADLINK and the focus both companies have on improving manufacturing operations and driving adoption of Industry 4.0 best practice.”

Daniel Collins, Director of IoT Solutions & Technology – ADLINK, comments: “Joining the Senseye Ready Partner ecosystem is part of ADLINK’s commitment to making factories smarter. Our offerings support data acquisition and analysis from many different types of manufacturing assets, enabling predictive maintenance capabilities across fleets and factories to yield higher productivity and reduce losses due to machine downtime.”

NASA’s Perseverance rover commences cutting-edge scientific measurements on Mars with Finnish equipment

NASA’s Perseverance rover has now spent its first months on the surface of Mars. The testing and deployment phase is proceeding well, and after the first technology demonstration with the Ingenuity helicopter, the rover is commencing the continuous scientific measurements. With the arrival of the humidity and pressure measurement instruments onboard Perseverance, the first meteorological network on another planet is being created.

The Perseverance rover landed successfully on Mars in February 2021 and will now explore an ancient river delta in the Jezero Crater for at least the next Martian year, which is approximately two Earth years. After the landing, the rover stretched its robotic arms and has already delivered a good number of high-quality photos, videos, and audio samples back to Earth.

The rover’s Mars Environmental Dynamics Analyzer (MEDA) instrumentation suite, developed by a Spanish-led research consortium, has also been deployed. MEDA is a weather station that has been developed specifically for the conditions on Mars. Instruments by the Finnish Meteorological Institute (FMI) and Vaisala are included in the MEDA suite to measure pressure and humidity conditions on Mars.

The measurements and local wind data provided by the MEDA suite is also used by the Ingenuity Helicopter.

The measurement instruments need to be able to deliver reliable high-quality measurements even after the long space journey.

“Accurate and reliable science-based measurements are at the core of Mars research. That’s why it is great to receive verification that our sensors are working in the extreme conditions on Mars, even after the demanding space journey. Vaisala’s measurement technology is at its best in challenging measurement conditions,” says Liisa Åström, Vice President of Products and Systems at Vaisala.

“The equipment on Mars needs to work in all conditions and is tested accordingly. Manufacturing, testing, and finalising the measurement instruments has been a major project lasting many years, so it feels great to see the instruments finally at work on Mars,” summarises Maria Hieta, Research Engineer at FMI.

Hieta continues: “For instance, the humidity measurement instruments on Perseverance have gone through a tough selection process. FMI built 13 different instrument models around the humidity sensor, and these models were tested several times in harsh conditions such as very low temperatures. Additionally, the tests exposed them to vibration and shocks. The most reliable model was chosen as part of the MEDA equipment.”

First measurements reflect expectations

The MEDA equipment has now delivered the first round-the-clock measurement series on pressure and relative humidity to Earth. The measured values correspond to what was expected.

“The pressure levels and variation according to the time of day in the Jezero Crater reflect our models well. Relative humidity is practically zero (0% RH) during the day and rises during the night as the local temperature falls to nearly -80 °C. For comparison, 20 percent relative humidity is considered very low on Earth, and relative humidity near zero is hardly ever measured. The pressure data has also let us observe dust devils passing Perseverance, showing them as fast and sharp declines in the pressure signal,” explains Maria Genzer, Group Leader of Planetary Research and Space Technology at FMI.


Martian weather conditions and atmosphere interest Finnish researchers

The Perseverance rover has been designed to explore Mars’ conditions and geology as well as to search for signs of ancient life. Even though signs of life are fascinating, Finnish researchers are especially interested in the Martian atmosphere.

“Earth and Mars share a lot of similarities, which is why we find the study of Mars’ atmosphere so fascinating: it helps us to understand the behaviour of Earth’s atmosphere. Additionally, dust storms on Mars can be harsh, so it is crucial to be able to predict the storms if we are to send manned space missions to Mars in the future. For this reason, Mars needs a weather station network,” states Maria Genzer.

Meteorological observation network based on Finnish expertise

Perseverance and the Curiosity rover, which landed on Mars in 2012, provide measurements approximately 3,700 kilometers apart from each other. Both rovers carry similar Finnish pressure and humidity measurement instruments, which deliver data that is sent to Earth for analysis.

The data from the rovers, combined with observations from NASA’s InSight Lander on Mars, form the first three-point meteorological observation network on another planet. The network will enable even more accurate modelling of Mars’ atmosphere and its phenomena.

“In the future, we hope to get more measurement points on Mars. This is the ultimate goal for example in our MetNet program, in which we are developing small probes that will impact and penetrate Mars’ surface. These probes would then form a comprehensive meteorological observation network on the planet,” Maria Hieta explains.

The Mars 2020 mission is a part of NASA’s Mars exploration program. One of the main tasks of the Perseverance rover is to gather and store a series of rock and soil samples that can be brought back to Earth for analysis in the future. Finnish technology is scheduled to be launched to Mars again in 2022 aboard the ExoMars mission by the European Space Agency (ESA) and the Russian space agency Roscosmos.

Current calibration system eliminates EMF

A current calibration system designed by Guildline Instruments has eliminated thermal EMF effects.

The 6622A DCC bridge uses a process of automatic current reversal. The unique architecture of the bridge and its control algorithm further removes gain and offset errors in the Nano-voltmeter balance detector and the precision toroid. The end results are shown by long term accuracy and linearity without the need for routine, frequent verification tests or calibrations.

Incorporating a unique ‘self-calibration’ functionality for the embedded null detector which is performed as part of each measurement, it also, via the standard interchange technique, automatically performs a ‘self-calibration’ of the measurement ratios to < 0.02 x 10-6.

With an operating range up to 10,000A and it’s modular design, the 6622A can be found in many calibration laboratories, Nuclear test labs and is heavily used in Electric Vehicle PowerTrain developments.

For more details on the Guildline Instruments 6622A current calibration system, please view full details at EvolutionMeasurement.com or call +44 (0)1264 316470