About us

For more than 60 years weber Sensors is represented on the sensor market worldwide. Under the trade mark captor® we develop, produce and distribute sensors for monitoring and measuring of liquid and gaseous media as well as inductive proximity switches and hot metal detector for the steel industry.

Captor products are distributed through a dense sales network worldwide. Our competent partners on-site support you and advise you to find individual solution for your application.

Quality first 

Quality is the upper most goal and corporate culture of the captor group. 
weber Sensors GmbH in Germany as the main production site manufactures according to DIN EN ISO 9001:2015. It certifies not only the quality of the products, but also the quality of the internal communication and logistics. 
We are proud to have with our captor products, the best quality and highest reliability for our customers, combined with leading edge technology. 
We provide world wide consulting, support at the planning stage, installation and commissioning of captor systems.

The captor group

In order to offer state of the art sensing technology plus the added value of application and industry know-how the captor group has emerged.
Each group member can offer turn key solutions for the application and integration of automated solutions.
The captor group is a unification of companies from a variety of industries and technologies addressing the marketplace under the captor umbrella. The members of the captor group are sharing resources and Know-how and most importantly,  share and benefit from the market recognition of the trade mark "captor", that stands for products and services you can rely on.
Today captor partners are well known solution providers in various industries around the world:
  • metal and mining
  • automotive and transportation technology
  • air conditioning
  • power stations and energy distribution
  • water treatment
  • food processing

Captor partners are available in most industrialized countries of the world.

Company History

Günther Weber started his first business in Weinheim, Germany a small town near Heidelberg, with the development and production of sophisticated, electronic measuring equipment for the steel industry. 
By working with this industry he learned how to design equipment and sensors capable to survive this harsh industrial environment.


The first static infrared Hot Metal Detectors without moving parts and without adjustment potentiometers were introduced to the steel industry. 
This development became the famous foto-captor that is still the leading HMD in the steel industry.


The first two-wire inductive proximity switch was introduced by weber as a direct replacement for mechanical limit switches. This was the start of a new era in the sensor industry. 
Many of today's well-known proximity switches can be traced back to the proxi-captor of weber. 
Based on the early pioneering and developments by weber, Germany is today the leading world supplier of proximity switches.


The small "Technology workshop" had to expand. weber founded weber Elektronik GmbH & Co KG at its new location in Kollmar, north of Hamburg, Germany.


Two new families of products were emerging, both based on the calorimetric principle, utilized for the first time in industrial applications by weber: 
the flow-captor and the vent-captor. 
These products opened new markets for the company and they became the building blocks for growth in the coming years.
1979The success of the captor line required a wider, international orientation for Sales, Marketing and Customer Service. For this weber Sensors GmbH was established. 
The captor line was expanding. The requirement of reliable system in automation created new applications and with it came the development of new products.


The increasing demand of captor products then required a factory for manufacture of standard products. Ireland was selected as the location and weber Sensors Ireland Ltd was established. 
At the same time the sales in the UK started growing; weber Sensors Ltd. was then established in Southport, UK.


There were already activities in the USA, and this was the right time to put more emphasis on the US market, weber Sensors Inc. was then established in North Lima, Ohio.


weber Sensors Inc. (WSI) was then exclusively serving the steel industry. But soon the activities were expanded to the much bigger potential outside the steel industry. This required a better-suited location and WSI moved to Woodstock, Georgia.
Due to the evolving global economy in the 1990's the different weber companies started working together as a group, we call it the "captor group".


The captor group was growing. For better coordination and support of the members of the captor group, captor Management Inc. was established.


We have worldwide nearly 100 dedicated employees specializing in development, production, sales and customer support of captor products.


weber sensors Inc move to new larger premises; Acworth GA, European companies restructured, Sales & Marketing, R&D and production split into independent companies; enabling weber to respond efficiently to customer demands and the changing global economy.
They all help our customers and partners with the task of advancing automation. OEMs throughout the world like to work with captor products from weber. Not only because of the wide application of captor products, but because of the global network of the captor group for customer service and support.


The production in Ireland will be closed. Therefore the production capacities in Germany extend and additional jobs can be created.

In December weber Sensors Ltd. in Germany has transferred its business to the weber Sensors GmbH.

Future safe solutions 

The requirements for automation are steadily changing. 
By working together with leading companies of different industries, weber is always on the forefront of new technologies, to the advantage of their customer. 
For over 60 years our customers and their special requirements have always been the focal point of our concern. 
Günther Weber had always headed R&D; this is his expertise and one of the reasons for weber's success today.  Innovation has carried on with a new generation of R&D engineers, following the standard set by Gunther Weber.
Innovation and know-how, together with over 60 years of industrial experience is the reason for the leading edge of the captor products.

System Partnerships 

Many of our customers are international operating OEMs and system integrators. Our contribution to such a partnership exceeds normal customer / supplier relationships. In close cooperation with our customer partners we develop "integrated sensor solutions" designed for the entire concept of the system. 
The combination of the industry specific know how of our customer with our unique experience and knowledge of electronic sensors results in the most economic technical solution for the task in at hand. 
The global captor network provides reliable local support all over the world.