History

1900
Formation of the ADOS Feuerungstechnische Gesellschaft GmbH company in Aachen as the first factory worldwide to be established for chemical gas analysis on the basis of the Patent of Max Arndt for automatic tests on flue gases. The company was formed by Aachener Industrialists, all with equal shares.

1926
Acceptance of the company shares by the banker Leo Ruetgers as manager and Mrs. Elisabeth Lang née Houben.

1945
After the complete destruction in the Second World War, the manager Leo Ruetgers took over all the Company’s shares.
He commenced with the rebuilding and once more started the production after he was granted approval by the authority of the British occupying forces.

1950
The company name was changed to ADOS GmbH. The program was extended to include the heat technology sector with volumetric measurement equipment (gas, vapour, water) and heat quantity measurement equipment for boiler house control.

1958
Grad. Eng. Herbert Ruetgers started in the company.

1973
Gas analysis was changed from wet-chemical to electric gas test equipment. The company and management was taken over by Grad. Eng. Herbert Ruetgers.

1990
Grad. Eng. Michael Ruetgers started in the company.

1997
Grad. Eng. Michael Ruetgers was invited to join the management as a junior partner.

2000
The company celebrated its Centenary Jubilee.

2005
Extension of the production possibilities by using new gas transmitters.

2012
First ATEX and SIL 1 gastransmitter GTR 210 EX is certified by DEKRA.

2015
GTR 210 MED is certified for marine applications.

2016
First ATEX and SIL 1 central unit FlexADOS 914/LON is certified by TUEV (Technical Control Board).

2017
Entry into fieldbus technology.

2020
DNV-GL-Certification of GTR 210 and FlexADOS 914.
Dipl.-Ing. Michael Rütgers becomes sole managing Director.

2023
By implementing a photovoltaic power system on the flat roof of the production buildings the company produces its own electricity.

Hitsorie Messgerät

A test instrument hanging in a universal joint (to compensate the strong wave motion on board a ship), when measuring carbon dioxide.

Historie Messgerät

The first automatic flue gas monitor "ADOS" 1900:
Driven by updraught in the chimney, the unit takes a sample of flue gas 10-times per hour, automatically analyses the sample and records the content of carbon dioxide.
This forms a measure for the most economic use of fuel by the personnel responsible (boilermen). The standard is around 15% carbon dioxide content in the furnace gases.

Historie Medaillen

In 1898, Max Arndt was awarded the “Elliot Cresson” gold medal in recognition of his patent “Econometer” automatic selfacting flue tester). The medal was awarded by the “Franklin Institute of the State of Pennsylvania, USA”.

Historie 3-fach Messgerät

Triple test instrument (Triplex) for monitoring the CO, H₂ and CO₂ content of the ambient air.
Used in the chemical industry.