GAS DETECTION
Results
The hardening process described above can be controlled and regulated very effectively using the GreenFlow System.
Figure 10 shows a typical curve for the temperature, gas concentrations, and volume fl ows.
After the furnace has been loaded, there is a stabilisation phase of approximately one hour with a high gas supply (100%).
The gas supply is then continuously reduced to values between 10-20%. This low gas fl ow remains constant throughout the entire carburising process, which can take several hours. This results in the gas and energy savings described above.
The entire process is documented and can also be used for further quality checks.
However, these savings also depend on the size and loading of the furnace and therefore varies between 80 and 96%. Figure 11 shows examples of this for different sizes of hardening furnace.
Figure 12 shows the potential savings over a period of one month.
Depending on the furnace load, savings of 70-98% can be achieved. The average value in this TQ-XL(1200) system was 82%.
Summary Ipsen’s GreenFlow system is an innovative way of performing high-quality surface treatments on steels under a controlled atmosphere. This process also enables signifi cant energy savings of over 80%.
This is made possible by the use of high-quality and accurate gas analysis based on the proven
INFRA.sens® Sensorik GmbH.
modules from Wi.Tec-
This technology has been of successful use for over two years and opens up a wide range of possibilities for users in terms of product quality and cost reduction.
References
[1] Vogelei, K., Hanzlik, K.: Control of C level in gas carburizing systems – A new route for holistic observation? GASWÄRME International (55) Nr. 7/2006
[2] Mikulović, D., Živanović, D., Ehmeier, F.: C-Pegelregelung mit der O2-Sonde und der L-Sonde. GASWÄRME International (58) Nr. 4/2009
Dr. Bora Özkan
Ipsen International GmbH Flutstraße 78, D-47533 Kleve, Germany Email:
bora.oezkan@ipsen.de Web:
www.ipsenglobal.com
[3] Özkan, B., Hellwig, M.: Hybrid Furnace Technology for Intelligent Energy Use. Proceedings from the 33rd Heat Treating Society Conference and Exposition 2025. Paper No: ht2025p0074, pp. 74-80; 7 pages
https://doi.org/10.31399/asm.cp.ht2025p0074
[4] Wiegleb, G.: Gas Measurement in Theory and Practice. Springer 2023
https://doi.org/10.1007/978-3-658-37232-3
[5] Kampschulte, A. Wiegleb, G.: Use of Innovative NDIR Gas Analysis for Monitoring Industrial Gas Mixing Equipment. International Environmental Technology IET January/February 2025, p.38-39
Alain Barillet Wi.Tec-Sensorik GmbH
Schepersweg 41-61, D-46485 Wesel, Germany Email:
al.barillet@
witec-sensorik.de Web:
www.witec-sensorik.com
Nils Bernhagen
Ipsen International GmbH Flutstraße 78, D-47533 Kleve, Germany Email:
nils.bernhagen@
ipsen.de Web:
www.ipsenglobal.com
Prof. Dr. Gerhard Wiegleb Wi.Tec-Sensorik GmbH
Schepersweg 41-61, D-46485 Wesel, Germany Email:
ge.wiegleb@witec-sensorik.de Web:
www.witec-sensorik.com
Gas Detection
Worldwide advanced gas analysis specialists cater to a host of environmental and industrial applications
Over many years, smartGAS Mikrosensorik GmbH has established itself as a specialist in advanced gas sensing and analysis solutions, supplying industries where precision, reliability, and fl exibility are critical. With technologies based on infrared absorption (NDIR) and photoacoustic spectroscopy (PAS), the company offers systems that enable selective gas detection and precise concentration measurement across a wide range of applications, including wastewater treatment, emission monitoring, safety, and process monitoring.
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Support extends beyond just delivery. Technical assistance, maintenance, and troubleshooting help ensure that systems run effi ciently throughout their lifespan. A high level of customisation further improves this service approach. Analysers can be customised to meet specifi c requirements for gas combinations, ranges, and output signals, while mixed gas calibration ensures accurate analysis even in complex multi-gas environments.
To date, smartGAS has delivered over 1,000 systems worldwide, with installations in various areas, including emission monitoring, refrigeration, fruit ripening and storage, process control, high-voltage equipment monitoring, and laboratory analysis. A strong focus on sensor quality further supports the
company’s reputation. Many components are produced in-house, while additional sensors are sourced from trusted European suppliers, ensuring consistently high standards.
Certifi cation is another key factor in international deployment. smartGAS analysers hold EAC and ATEX approvals, demonstrating compliance with demanding global safety and performance standards and providing assurance for customers operating in regulated environments.
Recent developments have led to smaller devices and a wider range of detectable gases, expanding potential applications. By continuing to invest in sensor innovation, smartGAS aims to make gas measurement easier while supporting environmental protection and improving safety for people and equipment.
With a portfolio of both standard products and
Bar hole sampler delivers integrated precision in gas leak detection
Sensors Inc., has introduced the Bar Hole Sampler, a groundbreaking all-in-one device that redefi nes effi ciency and precision in natural gas leak management. Combining pinpointing, purging, and quantifi cation within a single compact system, it represents a signifi cant step forward for fi eld operations.
The leak pinpointing function uses an internal gas sensor paired with an extraction pump, allowing technicians to rapidly locate leaks with high precision while reducing unnecessary excavation. Purging is supported through dual fl ow options: low fl ow via the internal battery-powered pump, and high fl ow using compressed air via a vacuum venturi. Integrated software provides real- time monitoring of purging progress, further enhancing operational control.
Leak Detection
tailored solutions, smartGAS offers industries versatile tools for precise gas analysis. Its combination of quick delivery, strong service support, proven reliability, and technical fl exibility has established the company as a trusted partner in this vital fi eld.
More information online:
ilmt.co/PL/LAEJ 65912pr@reply-direct.com
Quantitative assessment is carried out by merging fl ow rate data with methane concentration measurements, thereby enabling accurate leak grading. This capability facilitates prioritised repairs, regulatory compliance, and improved environmental and public safety management.
Designed for ease of use, Sensors’ Bar Hole Sampler features intuitive controls and remote Wi-Fi operation, allowing technicians to manage tasks effi ciently and safely. By integrating three critical capabilities into a single streamlined platform, the Bar Hole Sampler is an ideal tool for the gas leak management sector.
More information online:
ilmt.co/PL/ZOmB 65774pr@reply-direct.com
WWW.ENVIROTECH-ONLINE.COM
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