The Next Step in Miniaturization of Infrared Emitters

Application Focus: Refrigerant Monitoring


Itasca, IL, USA & Kaegiswil, Switzerland — The EMIRS 50 is the miniature infrared emitter from Axetris, with an emitting area of 0.8 x 0.8 mm2.

The small size of the emitting chip, combined with an efficient design, allows our customers to modulate the EMIRS 50 at very high frequencies.

While using the infrared source in gas detection systems, it is often not the absolute emission power that is critical; rather, it is the difference in detected power between the “on” and “off” stages of the infrared source.

For this, an infrared source with high modulation depth is essential.

The graph below visualizes the “max-min” difference in optical output power achieved by the EMIRS 50 at various modulation frequencies.

It is clear that the EMIRS 50 allows our customers high flexibility in gas detection system design, since they can choose an emitter modulation frequency to optimize the signal-to-noise (S/N) ratio required to achieve the target gas detection limit.

GraphThe high efficiency of the MEMS-based EMIRS 50, combined with the high modulation depth, ensure easy thermal management and small gas sensor size. The EMIRS 50 is, thus, an ideal product for portable gas sensing applications.

Read more about Axetris infrared sources at

Application Focus: Refrigerant Monitoring

Monitoring refrigerant gases for safety and quality

Refrigerant monitoring for safety and process control is often done using NDIR or PAS gas sensors, where Axetris infrared sources are used.

Today a large variety of refrigerants such as Chlorofluorocarbons (CFCs), Hydrofluorocarbons (HFCs) and Hydrochlorofluorocarbons (HCFCs) are used in industrial and domestic air-conditioning products.

The monitoring of refrigerant gases for process control and safety is critical due to the ability of most refrigerant gases to have serious environmental consequences.

Gas sensors based on Non-Dispersive Infrared (NDIR) or Photoacoustic Spectroscopy (PAS) have the ability to detect such refrigerant gases even in small concentrations, thereby acting as reliable leak detectors.

Read more about the use of Axetris Infrared Sources for refrigerant monitoring.

Axetris is a leading provider of components and modules for gas sensing, gas flow and gas control, powered by Axetris’ proprietary platinum based Pt-microchip technology. All products are manufactured at Axetris’ state-of-the-art micro-technology clean room facilities in the central part of Switzerland.

Axetris USA
Leister Technologies LLC
1275 Hamilton Parkway
Itasca, IL 60143 USA

Toll-free: +1 844-AXETRIS
Phone number +1 855 534 7837
Fax: +1 630 760 1001

Headquarters Switzerland

Axetris AG
Schwarzenbergstrasse 10
CH-6056 Kaegiswil

Phone: +41 41 662 76 76
Fax: +41 41 662 75 25