Gas Detection Systems
Bieler+Lang – When Safety Counts!
Applications for Gas Warning Systems
Your expert Bieler+Lang supports you in the design of your gas warning system
Products
Gas measurement and warning systems – grouped by device type

Bieler+Lang is your expert partner for safety technology and occupational safety.
In many areas, the occurrence of harmful or explosive gases and vapors is to be expected. We help you to optimally protect people, the environment, technical equipment, and property from serious damage. For over 50 years, our products have been providing timely and reliable warnings of gas accidents and explosions.
Put your trust in Bieler+Lang and the Safe Monitoring Group!
Services
Everything from a single source with Bieler+Lang

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.

Plant engineering
Individual gas warning systems
From small enclosures to floor-standing cabinets, we manufacture your individual gas detection system to customer specifications.

Maintenance & repair
Provision for your investment
Conclude a system-specific maintenance contract with us. So you can be sure that your system will have the desired high availability.
Vacancies
Welcome to Bieler+Lang

Get ready to take off at Bieler+Lang
We want to grow and have full-time and part-time positions available. Are you skilled with your hands and not afraid of technical and electronic components? Then let’s get started!
In addition to the advertised positions, we also welcome unsolicited applications.
Look forward to a job in a friendly environment with great colleagues and a fair salary.
Click here to view our current vacancies.
Service for gas warning systems
Security must be maintained
Service
Maintenance &
Maintenance contracts
NEWSLETTER
Stay up up to date.
Bieler+Lang
We are at trade fairs for you

HYDROGEN Technology EXPO Europe
The European trade fair for hydrogen technology and SOLUTIONS for a
LOW-CARBON FUTURE with hydrogen as an energy carrier.
Visit us at the HYDROGEN Technology EXPO Europe in Hamburg
from October 21-23, 2025. Together with other smg group members,
we will be there for you again in 2025.
Merger
part of Safe Monitoring Group

SMG Safe Monitoring Group
Achieving more together. Under the leadership of Alexander Larrson, the Safe Monitoring Group brings together a wide range of companies in the field of gas detection technology to leverage our strengths across Europe.