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About the Group

Condition Monitoring Technology Group (CMTG) is dedicated to delivering excellence, innovation, and top-notch service across diverse precision markets. 

Our expertise lies in the realms of vibration and acoustic analysis, vibration condition monitoring, as well as the intricate science of structural and rotating machinery. With a focus on precision, we cater to a spectrum of industries, including aviation, power generation, automotive, defence, and manufacturing.

The Group

Condition Monitoring Technology Group (CMTG) stands as a dynamic conglomerate, comprising six prominent brands dedicated to delivering quality, innovation, and unparalleled service across precision markets. With a focus on vibration analysis and the intricate science of structural and rotating machinery condition monitoring, CMTG caters to diverse sectors such as aviation, defence, automotive, and power generation.

Within the CMTG umbrella, each company plays a distinctive role in shaping the group's expertise. Beran, a foundational force since 1984 in Devon, spearheads advancements in condition monitoring systems for the power generation industry. Helitune specializes in aerospace, contributing expertise in rotor track and balance equipment, while Semia and SEI extend the group's influence in the aerospace sector. Prosig, a key player in the field of vibration monitoring, enhances the group's capabilities with its innovative solutions.

CMTG combines over 35 years of experience with cutting-edge technologies to provide comprehensive system capabilities. Our commitment to optimizing complex systems, identifying potential failures, and devising effective solutions resonates across aviation, power generation, automotive, advanced engineering, defence, and manufacturing industries. With a global footprint, CMTG boasts local sales and support facilities strategically located in the UK, France, Germany, Italy, and the USA. 

Embrace the future of precision monitoring and testing with CMTG's world-class solutions.

CMTG work across the aviation, power, and automotive industries specialising in

  • Vibration Monitoring Instrumentation
  • Diagnostics
  • Prognostics
  • Test and Measurement


  • Electronic design
  • Bespoke engineering solutions
  • Software development
  • Manufacturing
  • Repair, calibration and maintenance Services
Our brands

Helitune is a renowned player in the aviation industry, specializing in the design and production of rotor track and balance (RTB) systems, vibration analysis tools, and health monitoring equipment. 

With a distinct focus on precision and reliability, Helitune's expertise extends to crafting RTB systems tailored for military applications, solidifying its position as a key contributor to advanced aviation technology.

Helicopter in the air against blue sky

Semia stands as a distinguished specialist in aerospace vibration management, offering a comprehensive suite of products designed for precise vibration measurement on aircraft. 

Our expertise is rooted in a deep understanding of aerospace dynamics, ensuring that our products meet the exacting standards required for reliable and accurate performance in the aviation industry.

Navy plane P-3C Orion of VP-5 in flight

SEI excels in the production, installation, and maintenance of the Structural Data Recording Set (SDRS) tailored for both military and commercial aircraft. 

Our commitment to precision and reliability ensures that our SDRS technology meets the highest standards in the aerospace industry.

Power station at twilight

Beran stands as a seasoned authority in the power industry, boasting 40 years of invaluable experience in the design and manufacturing of cutting-edge condition and protection monitoring systems. 

Our expertise extends to crafting not only online vibration condition monitoring systems but also portable solutions, complemented by specialized software. With an unwavering commitment to excellence, Beran is dedicated to safeguarding critical infrastructure and assets through innovative and reliable technology.

Engineer model of car in black and white

Prosig is at the forefront of cutting-edge technology, specialising in the comprehensive development of advanced systems for noise, vibration, and harshness (NVH). 

Our expertise extends to the meticulous realm of acoustical testing, providing tailored solutions that cater specifically to the dynamic needs of both the automotive and power industries. With an unwavering commitment to innovation and precision, Prosig is a trusted partner in enhancing performance, reliability, and efficiency in these crucial sectors.

DJB member of staff at work

DJB excels in the field of vibration sensor technology and accessories. 

Our specialisation extends to the meticulous manufacturing of accelerometers, alongside the development of associated instrumentation and calibration services. With a commitment to precision and reliability, DJB stands as a trusted provider, ensuring optimal performance in the realm of vibration measurement and monitoring.

Office environment hands on laptop

If you want to learn new things, enjoy working with talented colleagues, and want to be part of creating bespoke solutions for some of the biggest organisations in the world, then come and join our team.