During MIG/MAG welding operations, fumes generated can cause health risks for operators. Extraction torches capture fumes directly at the source, close to the welding arc. To ensure effective fume capture, it is important to be able to check the torch extraction airflow.
But how can this airflow be checked easily and directly at the workstation? The AFM is a mechanical device designed to measure the airflow of fume extraction torches and enable operators to quickly verify that they are functioning correctly.
Why check the airflow of a MIG/MAG extraction torch?
Our MIG/MAG fume extraction torches incorporate a device that extracts welding fumes as close as possible to the point of emission. Their effectiveness depends in the particular on the positioning of the torch, the welding conditions, and the performance of the extraction system.
Insufficient airflow can compromise source capture of welding fumes. Conversely, monitoring the airflow makes it possible to verify that the torch is operating within the required measurement range and to identify certain abnormalities that may require further inspection.
Airflow monitoring is therefore an important aspect of overseeing welding fume extraction equipment. It complements good operating practices and the regular maintenance of the equipment.
AFM: A Flow Meter for Fume Extraction Torches
The AFM is a flow measurement tool for MIG/MAG fume extraction torches. It enables welders and operators to quickly measure the airflow of their equipment directly at the workstation.
Its operation is based on a 100% mechanical system. The reading is obtained using a float and a graduated scale, providing a simple and immediate indication without any electronic device or calibration.
The AFM therefore makes daily airflow monitoring easier, without the need for complex measuring equipment.

A readable measurement and a scale tailored to your needs
The AFM features a measurement range from 40 to 100 m³/h, with a stated accuracy of ± 2 m³/h. This range makes it possible to monitor different extraction airflow levels, depending on the characteristics of the torch being used.
Its 60mm diameter also provides a comfortable grip during measurement and inspection operations.
Compatibility with different torches types
Thanks to its four plugs with different diameters, the AFM can be adapted to various types of fume extraction torches. This design makes it easy to use in environments where multiple welding systems are operated.
The tool therefore provides a practical solution for airflow monitoring, eliminating the need for multiple measuring instruments.
How to use the AFM flow meter?
The AFM is used to measure the extraction airflow of the torch. To obtain reliable and meaningful results, it is important to follow the manufacturer's operating instructions and to ensure that the measurement conditions are appropriate for the equipment being tested.
The measurement can then be taken by reading the value indicated by the float on the graduated scale and comparing it with the expected airflow for the torch being tested.
To see how the device works in practice and to follow the different steps of its use, watch our video tutorial:

This demonstration provides a better understanding of how to handle the device and use it for inspecting and monitoring fume extraction torches.
AFM: A practical tool for monitoring welding fume extraction
Easy to use, fully mechanical, and adaptable to different torch models, the AFM simplifies the verification of extraction airflow directly at the workstation.
Its key advantages include:
- Instant reading thanks to the float and graduated scale.
- A measurement range from 40 to 100 m³/h, with a stated accuracy of ± 2 m³/h.
- A 100% mechanical design, requiring no calibration.
- Compatibility with different types of torches, thanks to four plugs with different diameters.
- Comfortable handling, with a diameter of 60 mm.
Airflow monitoring is part of a comprehensive risk prevention approach for hazards associated with welding fumes. However, it does not replace equipment maintenance, required inspections of the extraction system, or any other preventive measures appropriate to the workstation.
Would you like to learn more about the AFM or about welding fume extraction solutions? Discover the equipment offered by ENGMAR and contact our team for further information.




