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Bieler+Lang gas detection & warning systems

Gas detectors from Bieler+Lang – safety you can rely on!

Hazardous or explosive gases and vapors pose a high risk to people, equipment, and the environment. With gas detection systems from Bieler+Lang, you can detect hazards early—reliably and in compliance with standards. Bieler+Lang, part of the international Safe Monitoring Group, has been developing, manufacturing, and distributing high-performance gas detection systems for over 50 years to ensure maximum safety and minimize the risk of failure.

Your advantages at a glance:

From planning to maintenance: we support you as a reliable partner – nationally and internationally. Our own certified production facility in southern Germany guarantees the highest quality standards and innovative technology. Thanks to short distances and efficient processes, we offer you fast response times and customized solutions. From support with the individual design of your gas detection system – based on decades of experience and current regulations – to commissioning and maintenance, we are at your side as a competent partner. Our international sales network, our own Bieler+Lang service team and numerous qualified service partners guarantee reliable support in German-speaking countries, Europe and worldwide.

Put your trust in Bieler+Lang and the Safe Monitoring Group! Get advice now and enhance your security.

Your expert Bieler+Lang supports you in the planning, installation and maintenance of your gas warning system

Applications for gas warning systems

Products from Bieler+Lang

Proven gas detection & warning systems sorted by device type

Bieler+Lang ist Ihr kompetenter Partner für Sicherheitstechnik und Arbeitsschutz.

In vielen Bereichen ist mit dem Auftreten von gesundheitsschädlichen oder explosionsfähigen Gasen und Dämpfen zu rechnen. Wir helfen Ihnen Menschen, Umwelt, technische Anlagen und Ihre wertvollen Investitionen optimal vor den oft folgenschweren Schäden durch Gase und Dämpfe zu schützen. Schon seit über 50 Jahren warnen unsere Produkte rechtzeitig und sicher vor Gasunfällen und Explosionen.

Vertrauen Sie daher auf Bieler+Lang und der Safe Monitoring Group!

Services from Bieler+Lang

Everything from a single source with Bieler+Lang

Bieler+Lang project planning Planning of the gas meter installation

Project planning

Everything from a single source

We take care of everything for you, from project planning to the installation of your new gas warning system. Our sales and service teams are on hand to provide you with expert support.

Bieler+Lang employee assembles a control cabinet in the production hall

Plant engineering

Individual gas warning systems

From small enclosures to floor-standing cabinets, we manufacture your individual gas detection system to customer specifications.

Bieler+Lang service staff, technicians in front of emergency vehicles

Service & maintenance

Provision for your investment

Conclude a system-specific maintenance contract with us. You can be sure that your system will have the desired high availability.

Vacancies at Bieler+Lang. We are on the road to success!

We are growing and creating new jobs in Achern, Baden

Bieler+Lang employees in production stand at machines

Arbeiten in der Ortenau, der Oberrheinebene, im Schwarzwald – mit High Tech & Innovation in der Gaswarnbranche.

Bieler+Lang, ein Teil der Safe Monitoring Group, wächst kontinuierlich und hat weiterhin Großes vor! Wir haben soeben den erfolgreichsten Monat unserer Unternehmensgeschichte gefeiert. Wir freuen uns jetzt auf neue Mitarbeiter im wachsenden Team:

Aktuell suchen wir neue Mitarbeiter für verschieden Bereiche.

Updates und Details zu allen Jobs finden sie hier.

Service for gas warning devices

Security must be maintained

Service

Maintenance &

Maintenance contracts

NEWSLETTER

Bleiben Sie up to date.

Latest Discontinuations at Bieler+Lang — A Piece of Biogas History Retires:

Thank you for two decades of working together on the energy transition with the GMC Biogas 08 from Bieler+Lang

With the GMC Biogas 08, Bieler+Lang is phasing out a gas analyzer that has been a reliable companion to the biogas industry for many years.

This farewell comes at a time when the biogas industry can look back on impressive growth: Today, in Germany alone, some 9,600 biogas plants ensure a secure and sustainable energy supply!

A little-known fact: Although these plants generate a relatively small share of renewable electricity—5–6%—this share is all the more important, and they do far more than just produce energy: As flexibly controllable power plants, they balance out fluctuations in wind and solar energy, stabilize the power grid, and help maintain a balance between supply security and our electricity prices. At the same time, many plants efficiently utilize the heat generated through combined heat and power (CHP).

Bieler+Lang is proud to have supported this development over many years with reliable gas analysis and gas measurement technology. The GMC Biogas 08 was used not only in Germany but also in numerous biogas projects across Europe and around the world. For many years, it served as a key component for operators, ensuring safe operation and protecting people, the environment, and equipment.

Even though production of the GMC Biogas 08 is now coming to an end, we will, of course, remain committed to our customers. We will continue to service units that have already been installed to the best of our ability. In addition, we will ensure the supply of replacement parts as long as they are available. Our service and support team will continue to serve as a knowledgeable point of contact for all plant operators in the future.

We would like to thank all our customers, partners, and operators for the trust they have placed in us over many years. Together, we have helped ensure that biogas is now an indispensable part of a secure, sustainable, and increasingly flexible energy supply.

We look forward to continuing to support the energy transition in the future with innovative gas detection technology in the biogas sector.

Contribution to the Energy Transition: Bieler+Lang Biogas Analyzer_GMC Biogas 08 in front of a biogas plant and wind turbine_Announcement_July 2026_B+L_part_of_SMG_WEB_2000x2000px_20072026
Bieler+Lang GmbH ISO 14001:2015 and ISO 9001:2025 certification in 2026. Indoor plant in an ExDetector housing as a symbol of environmentally friendly management at Bieler+Lang.

Bieler+Lang ist jetzt nach ISO 14001 zertifiziert 🌱

Wir sind jetzt nach ISO 14001 zertifiziert 🌱

Mehr Transparenz, klare Prozesse und ein verlässlicher Partner in Sachen Umweltstandards. Denn Nachhaltigkeit ist bei uns kein Einzelprojekt, sondern systematisch verankert – z. B. durch:
• Ausbau unserer Ladeinfrastruktur für immer mehr E-Fahrzeuge
• Einsatz unseres ersten vollelektrischen Lieferwagens
• Eigene Energie durch unsere große PV-Anlage
• Optimiertes Abfall- und Verpackungskonzept im B2B-Bereich
Für Sie heißt das: Zusammenarbeit mit einem Unternehmen, das Verantwortung übernimmt – und diese messbar macht.
Das Zertifikat finden Sie hier: Zertifikat ISO 9001 + ISO 14001

Nachhaltigkeit ist für uns kein Projekt, sondern ein Prozess.

Bieler+Lang – part of the global Safe Monitoring Group

SMG – Safer Together!

Logo of the Safe Monitoing Group

SMG – die Safe Monitoring Group

Gemeinsam mehr erreichen: In der Safe Monitoring Group unter der Führung von Alexander Larsson haben sich verschiedenste Unternehmen im Bereich der Gaswarntechnik vereint, um weltweit unsere Stärken auszuspielen.

Von fest installierten Gaswarneinrichtungen, über die Schulungen für Anwender und Fachkundige, bis zu Vermietung, Vertrieb und Wartung von tragbaren Gaswarngeräten bietet das Portfolio der breit aufgestellten SMG für nahezu alle Anwendungsgebiete bestmögliche Lösungen.

Immer im Vordergrund: Die Sicherheit für Menschen, Umwelt und Ihre Investitionen.

Safer Together – die Safe Monitoring Group.