Celebrating the life and work of Hans Christian Ørsted

The discoverer of Electomagnetism

 

2020 marks the 200th anniversary of the discovery of electromagnetism by Hans Christian Ørsted (14/08/1777 – 09/03/1851), the Danish physicist and chemist who found that electric currents create magnetic fields. In 1820, Ørsted (commonly spelled Oersted) published a paper detailing that a compass needle was deflected from magnetic north by the presence of an electric current. Later findings the same year showed that an electric current produces a circular magnetic field as it flows through a wire.

 

Acknowledging Ørsted’s pioneering work and discoveries in the field of electromagnetism, Oersted's law and the Oersted, the unit of magnetic induction (Oe) are named after him. Ørsted was awarded the Copley Medal by the Royal Society of London, and a grant of 3,000 francs by the French Academy for his work. In later years he was elected a foreign member of the Royal Swedish Academy of Sciences (1822) and a Foreign Honorary Member of the American Academy of Arts and Sciences (1849). In 1829, Ørsted founded what would become the Technical University of Denmark (DTU).

 

Many everyday items are only possible because of electromagnetism. Imagine a world without electric motors, microphones, loudspeakers, and transformers…and that’s just the start.

 

Electromagetism is – of course – also fundamental to the principles of operation for the current sense transducer. Historically, engineers have been very creative when it comes to measuring current. However, when the application requires very high accuracy – such as power analysers, MRI scanners and other medical equipment, or power supplies used in particle accelerators in large scientific research establishments such as CERN, zero-flux technology, also called ‘fluxgate’, is accepted as the best solution. This approach uses the magnetic field generated by the circulation of the current.

 

At Danisense, we have refined and developed ‘fluxgate’, including the use of a closed loop which balances opposing magnetic fields, so eliminating offset and linearity issues. Using this combination of techniques, it is possible to achieve extremely accurate results even in harsh environments, and our products deliver best-in-class stability and accuracy.

 

We are therefore proud to celebrate our fellow countryman’s achievements, and we owe Ørsted a great debt of gratitude. Danisense is indeed thankful to be standing on the shoulders of such a giant.

Digi-Key now stocking Danisense current transducers

Popular models now available through world’s leading High-Service distributor following global deal

 

Key points:

  • Global distribution agreement with High Service distributor
  • 17 models plus accessories available ex-stock
  • Danisense products renowned for high accuracy, high reliability and ease-of-use

 

Taastrup, Denmark, October 2019…Danisense, the leader in high-accuracy current transducers for demanding applications, has signed a global agreement with Digi-Key, the leading high service distributor which is now stocking seventeen of Danisense’s most popular models plus accessories.

 

Included on the Digi-Key linecard are current transducers that span 50 – 2000A. All are based on Danisense’s innovative closed loop, flux gate sensor technology, which results in highly-accurate, stable and repeatable measurement. The products are made in Danisense’s vertically-integrated Danish facility and enjoy a reputation for high reliability and quality.

 

Comments Loic Moreau, Sales & Marketing Director, Danisense A/S: “We are delighted that Digi-Key – one of the world’s leading distributors – has decided to stock our most popular current transducers in its portfolio. We believe that Digi-Key’s global penetration into key automotive, renewables and industrial sectors will help drive our business forward.”

 

Added Shawn Martinsen, Product Manager – Sensor Technology

 “Danisense will help to expand Digi-Key’s broad portfolio of high accuracy current transducers for applications like e-mobility, power converters, oscilloscopes, multimeters, medical equipment, battery storage, and much more, to service the needs of our ever growing global customer base.”

For more information about Danisense products available through Digi-Key, visit their Supplier Center page on the Digi-Key website.

 

DANISENSE: Precision – Innovation
By combining complex magnetic performance with advanced electronics Danisense provides efficient and precise solutions that match the requirements of worldwide customers in demanding industries. Danisense was founded in 2012 and today is based in Denmark and Japan. The company’s founders and key employees are highly-experienced and possess specialized knowledge about high precision current transducers, enabling Danisense to create solutions that enable its customers to quickly and easy measure AC and DC currents with accuracies down to 1ppm. Its products are of the highest quality and have an extremely flat frequency response and outstanding DC stability.

 

About Digi-Key Electronics
Digi-Key Electronics, headquartered in Thief River Falls, Minn., USA, is an authorized global, full-service distributor of electronic components, offering more than 9 million products, with over 1.7 million in stock and available for immediate shipment, from over 800 quality name-brand manufacturers. Digi-Key also offers a wide variety of online resources such as EDA and design tools, datasheets, reference designs, instructional articles and videos, multimedia libraries, and much more. Technical support is available 24/7 via email, phone and webchat. Additional information and access to Digi-Key's broad product offering can be found by visiting www.digikey.com.
 

 

 

For more information please contact:

Loic Moreau

Sales & Marketing Director, Danisense A/S

Tel: +41 78 704 29 67

E-mail: lmo@danisense.com

Website : www.danisense.com

 

Or Agency:

Nick Foot

Director, BWW Communications

Tel: +44 1491 636393

E-mail: nick.foot@bwwcomms.com

How a Zero Flux Current Transducer Works: new video from Danisense

Tutorial discusses how to achieve a measurement accuracy of 1PPM

 

Key points:

  • Zero flux & closed loop principles combine to deliver best-in-class stability and accuracy
  • Instructional video explains operation of leading current sense transducers
  • Suits EV, medical and research physics applications

 

Taastrup, Denmark, June 2020…Danisense, the leader in high-accuracy current transducers for demanding applications, has produced a new tutorial video which discusses how – using the zero flux principle - current transducers can be produced with a measurement accuracy as accurate as 1ppm for applications such as power analysers in EV production, medical equipment such as MRI scanners and power supplies for particle accelerators.

 

The video explains zero flux technology, also called ‘fluxgate’ and how it works, including the use of a closed loop which balances opposing magnetic fields, so eliminating offset and linearity issues. Using this combination of techniques, it is possible to achieve extremely accurate results even in a harsh environment.

 

Comments Loic Moreau, Sales & Marketing Director, Danisense A/S: “The test and measurement industry has had to be extremely creative to cope with the increasing challenges set by customers who require greater accuracy in tough conditions. Current sense transducers from Danisense are acknowledged to be amongst the most reliable and high performance in the industry. We hope this video will help customers understand the technologies we use so that they can benefit from the results.”

 

Please view the video at https://www.danisense.com/documentation/flux-gate

 

 

DANISENSE: Precision – Innovation
By combining complex magnetic performance with advanced electronics Danisense provides efficient and precise solutions that match the requirements of worldwide customers in demanding industries. Danisense was founded in 2012 and today is based in Denmark and Japan. The company’s founders and key employees are highly-experienced and possess specialized knowledge about high precision current transducers, enabling Danisense to create solutions that enable its customers to quickly and easy measure AC and DC currents with accuracies down to 1ppm. Its products are of the highest quality and have an extremely flat frequency response and outstanding DC stability.
 

 

 

 

For more information please contact:

Loic Moreau

Sales & Marketing Director, Danisense A/S

Tel: +41 78 704 29 67

E-mail: lmo@danisense.com

Website : www.danisense.com

 

Or Agency:

Nick Foot

Director, BWW Communications

Tel: +44 1491 636393

E-mail: nick.foot@bwwcomms.com

New PCB-mount current transducer from Danisense features high stability and accuracy

Compact and lightweight – suits 1U PSUs

 

Key points:

  • Compact and lightweight
  • Best-in-class stability and accuracy
  • Suits 1U power supplies

 

Taastrup, Denmark, April 2020…Danisense, the leader in high-accuracy current transducers for demanding applications, has launched its ultra-stable, high-precision DP series of PCB-mount current transducers for isolated DC and AC current measurement up to 72A. With a footprint of 64.9 x 60mm, a height of 32mm and light weight of 250g, this compact device is suitable for 1U power supplies and other space-constrained applications.

 

Benefitting from Danisense’s closed-loop, compensated Fluxgate technology which provides a fixed excitation frequency and second harmonic zero flux detection for best in class accuracy and stability, DP series PCB-mount current transducers feature a maximum linearity error of 10 ppm and a measurement resistance of up to 100Ω at full scale.   Devices are programmable for 12,5A, 25A, or 50A usage via the PCB layout.

 

Applications include MPS for particle accelerators, stable power supplies, precision drives, battery-testing and evaluation systems, power measurement and power analysis. Comments Loic Moreau, Sales & Marketing Director, Danisense A/S: “Our technology has enabled us to deliver a PCB-mount current transducer with class-leading stability and accuracy. Its small size and low weight make it possible to include such high-performance measurement functionality on the PCB for the first time.”

 

DANISENSE: Precision – Innovation
By combining complex magnetic performance with advanced electronics Danisense provides efficient and precise solutions that match the requirements of worldwide customers in demanding industries. Danisense was founded in 2012 and today is based in Denmark and Japan. The company’s founders and key employees are highly-experienced and possess specialized knowledge about high precision current transducers, enabling Danisense to create solutions that enable its customers to quickly and easy measure AC and DC currents with accuracies down to 1ppm. Its products are of the highest quality and have an extremely flat frequency response and outstanding DC stability.
 

 

 

For more information please contact:

Loic Moreau

Sales & Marketing Director, Danisense A/S

Tel: +41 78 704 29 67

E-mail: lmo@danisense.com

Website : www.danisense.com

 

Or Agency:

Nick Foot

Director, BWW Communications

Tel: +44 1491 636393

E-mail: nick.foot@bwwcomms.com