A Legacy of Excellence

Photonis and Centronic unite under Exosens brand to strengthen leadership in Nuclear Instrumentation and Radiation Detection

MÉRIGNAC, FRANCE
JUNE 3rd, 2025

Exosens group, a global leader in advanced detection technologies, is proud to announce the integration of Photonis Nuclear Instrumentation and Centronic Limited under a unified product brand: Exosens.

This strategic move brings together two renowned pioneers in nuclear instrumentation and radiation detection. While the legal entities of Photonis and Centronic remain unchanged, both product lines will now be marketed under the Exosens brand. This branding unification marks the emergence of a global powerhouse combining technological excellence, innovation, and deep industry heritage.

A stronger brand to drive innovation and impact

By combining their respective strengths, Photonis and Centronic bring together decades of expertise and are accelerating innovation and expanding their reach across safety-critical markets.

With manufacturing locations in both Brive-la-Gaillarde (France), and Croydon (UK), the two entities will continue operations under the Exosens brand, representing a powerful legacy of precision engineering, reliability, and technological excellence.

“This branding transition marks a major step forward in our mission to lead the future of nuclear instrumentation and radiation detection technologies across multiple critical industries. By combining our expertise, we are reinforcing our position in nuclear reactor safety and expanding our capabilities to provide state-of-the-art solutions for other demanding industries such as aerospace, medical, and defense applications. Our commitment to innovation ensures that we continue to set new standards for safety, reliability, and performance worldwide,” said Ulrich Laupper, President of the Exosens Ultimate Detection Business Unit.

A Legacy of Excellence

Founded in 1945, Centronic is widely recognized for its pioneering work in nuclear instrumentation and radiation detection, including the development of Geiger-Müller tubes and its long-standing collaboration with the UK and global nuclear power sector. Over the decades, the company expanded its detection technologies to address the unique needs of the aerospace, medical, and defense sectors. Its portfolio includes advanced silicon photodiodes and custom sensor solutions designed for high-reliability applications.

Photonis Nuclear Instrumentation, with over 50 years of experience, has played a pivotal role in nuclear instrumentation for the nuclear energy industry. Its cutting-edge neutron and gamma detectors are critical for the operation and safety of nuclear power plants, fuel cycle facilities, waste monitoring systems, and international nuclear research initiatives. Designed to perform in extreme environments, these technologies meet the highest standards for accuracy, durability, and safety.

Exosens: delivering tailored, high-reliability solutions

Exosens offers a comprehensive range of standard, customized, and bespoke sensor technologies, specializing in safety-critical instrumentation, It includes:

Gamma and neutron detectors
Silicon photodiodes
Geiger-Müller tubes
Coil wound components

The brand is committed to upholding the highest standards of safety and performance, across all its technologies, including its market-leading reactor safety detection solutions for the emerging SMR (Small Modular Reactor) market.

With a global footprint and vertically integrated manufacturing capabilities, Exosens guarantees complete control over its production processes, ensuring exceptional quality and reliability. Its multidisciplinary team of scientists and engineers collaborate closely with customers to develop advanced, customized solutions that meet and exceed the most rigorous industry requirements.

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