City Technology celebrates 25 years of Sensoric specialist gas sensing innovation


Honeywell company, City Technology, a World leading manufacturer of gas sensors, is this year celebrating the 25th anniversary of its specialist gas sensing range, Sensoric.

City Technology's Sensoric range, manufactured in Bonn, Germany, provides the most comprehensive specialist gas sensing portfolio available on the market. During the last 25 years millions of sensors have been manufactured at the facility to detect toxic and exotic gases such as ammonia, hydrides, fluorine, chlorine and ozone.

With a pioneering spirit and commitment to innovation, one of the keys to Sensoric's sustained success over the last quarter of a century is the ability to meet complex application needs and create niche solutions, as City Technology's Bonn Site Leader, Dr Andreas Koenig explains. "We excel at solving difficult operational challenges through the application of highly specialised technologies that increase accuracy, reliability and sensitivity, removing the obstacles faced by many challenging applications.

Growing demands for specialist sensing

"The specialist gas sensing market is diverse in nature and has grown considerably since we began as an organisation. Besides the growing use of ammonia for refrigeration, the macro trends of increasing safety standards and evolving chemical regulations have led to a need for the more exotic gases like phosphine, diborane and hydrogen chloride. Applications and exact processes vary, creating their own challenges and this means that bespoke gas sensing solutions are often required to provide an exact fit. Since the early 1990s we put a key focus on designing niche products and today we offer 40 sensors detecting 20 different toxic and exotic gases, 60 variations of those cells and expert application support. Bespoke engineering has proved to be a real differentiator for us and this, combined with our advanced technology, has helped us maintain a strong and consistent double digit year-on-year growth."

Continued innovation and the development of small profile sensing technologies that set the benchmark for performance are key features of the Sensoric range, achieved through consistent investment and the application of best practice manufacturing processes. After the range was introduced in 1990, Sensoric sensors soon became popular with the semiconductor industry through their ability to offer small profile, trace level monitoring with enhanced reliability. This early success led to an expansion into the industrial safety market, and the development of drop-in sensor adaptations for existing instruments. Growth and market expansion soon sparked interest from major gas sensing player First Technology, who acquired the brand in 2004.

Investment and acquisition proves a success

In 2006 First Technology was acquired by the global manufacturing leader, Honeywell. Each acquisition brought with it investment and processes that helped evolve Sensoric into the market leader it is today, as Andreas continues. "Our initial success in the semiconductor industry enabled a quick expansion into industrial safety markets and customised sensor designs. This success and the acquisition by First Technology allowed us to grow and invest in areas like Lean manufacturing and automated sensor manufacture, ensuring we could meet market needs for smaller, more ergonomic sensors with increased sensitivity and reliability.

"Our integration into Honeywell provided further infrastructural support through enhanced sales, marketing, research & development and the application of Velocity Product Development (VPD) techniques. These developments strengthened our technological offering, infrastructure, in-house expertise and reach, as we continued to expand into new markets and regions. This investment has helped us create very strong scientific expertise; today we have several PhD level scientists in our organisation."

Enhanced performance in unique applications

Today, Sensoric sensors are part of the City Technology gas sensing portfolio, serving a wide variety of specialist industries from ammonia refrigeration, gold and coal mining, biogas, emissions, hi-tech laboratories, semiconductor and photovoltaics to water treatment, pulp & paper processing and the chemical industry. Sensoric sensors are used in some of the World's most interesting and unusual applications; the EU Space Agency rocket fuel stores are currently monitored using Sensoric hydrazine sensors, as an example.

A strong market position and sustained growth will no doubt see the brand achieving consistent success for many years to come, supported by some exciting technological innovations in development. Dr Stefan Degen, City Technology's Research and Development Manager for Specialist Gas Sensors, recently delivered an innovation speaker session at the Sensor + Test 2015 exhibition on the latest developments. Dr Degen explains how City Technology will continue to shape the global gas sensing industry through the introduction of revolutionary "smart" technologies. "It's very interesting times for the gas sensing market. As highlighted in my innovation speaker session at Sensor + Test, we are developing smaller and smarter sensors, that will offer enhanced in-built intelligence, greater PPE integration potential and increased reliability, sensitivity and longevity. We are pioneering these technologies that will have a big impact on the global safety industry, providing users with increased safety, ease of use and added value."

Driving the origins of Sensoric into the future

It is no surprise that Sensoric sensors should be at the forefront of such technology, building on its established success, as Dr Degen comments. "Back when we began in specialised gas sensing, we produced the industry's smallest profile toxic gas sensor, which was used in the MSTox portable gas detector. This ground-breaking device was incredibly popular in light of its small, ergonomic design and sensitive high performance monitoring capability. Our technology, especially the highly selective IP protected ammonia (US6248224B1) and hydrogen fluoride (US6423209B1) SE sensors, have been a key aspect of MSTox's success and our latest developments will no doubt allow instrument manufacturers to achieve similar success and differentiation in the future. I feel confident we will not only maintain the degree of success we have enjoyed over the last 25 years, but we will also build on it, creating a greater legacy of innovation that will continue to shape the gas sensing industry."

For more information about City Technology, please visit:


Image 01 (a range of Sensoric sensors) Image 02 (Sensoric sensor for the detection of ammonia)

Image 03 (25th Anniversary Sensoric brand logo)

Image 04 Application Shot (EU Space Agency rocket fuel stores use Sensoric hydrazine sensors) Image 05 (Semiconductor manufacture image) Image 06 (industrial application image) Image 07 (industrial application image)


Media contacts

Freelance PR Contact

Gem Bayless
Tel: +44 7553 113522

Editorial contact:

Caroline Hardiman
Honeywell Life Safety Sensors Division
Tel: +44 (0)1527 406 655
Tel: +44 (0)1527 406 709 (Direct)
Tel: + 44 (0) 7875 228 963

Life Safety Distribution GmbH

Javastrasse 2, CH-8604 Hegnau, Switzerland
Tel: +44 7553 113522
Tel: +41 44 943 4300


About City Technology

City Technology leads the global market in the manufacture and sale of innovative and reliable gas sensors for use in personal and fixed life safety systems. Every day, 50 million people around the world trust City Technology sensors to keep them safe and protect them from harmful gases. With a range of more than 300 products detecting 28 different gases, City Technology is the number one choice for sensing technology. The company is owned by Honeywell, a Fortune 100 diversified technology and manufacturing leader.

About Honeywell

Honeywell International ( is a Fortune 100 diversified technology and manufacturing leader, serving customers worldwide with aerospace products and services; control technologies for buildings, homes and industry; automotive products; turbochargers; and specialty materials. Based in Morris Township, N.J., Honeywell’s shares are traded on the New York, London, and Chicago Stock Exchanges. For more news and information on Honeywell, please visit