Infrared Emitters

Infrared Emitters for Industrial Applications

Our core expertise lies in the manufacture of electrically powered infrared emitters made from quartz glass. We offer emitters across the short-, medium-, and long-wave infrared spectrum. In terms of design, we are highly flexible – providing both twin-tube emitters in various tube formats and single-tube emitters in multiple configurations.

We specialize in custom-built infrared emitters tailored to individual customer specifications. Whether you require special lengths or single-unit production, simply share your parameters with us – we will manufacture the ideal infrared source for your application.

Advantages of Our Infrared Emitters

Our infrared emitters stand out due to the following key features:

Nearly complete transmission of the heating coil’s radiation through the quartz glass
Resistance to temperature fluctuations thanks to the low thermal expansion of quartz glass
High radiation intensity within a compact design
Exceptional efficiency resulting from minimal convection losses
Optimized directional radiation with minimal lateral emission – further enhanced by the use of our optional reflectors
Connection design adapted to performance requirements and structural conditions
Flexible installation – emitters can be produced for all mounting positions through precise processing of the heating coil
High mechanical stability of the quartz tube
Retrofit capability for integration into existing systems
Long service life ensured by high-quality materials and manufacturing
Custom emitter lengths available up to 4,000 mm

Send Us Your Inquiry

Share the key parameters for your custom infrared emitter – and we will design and manufacture it to your exact requirements.

Not sure about the precise specifications yet? No problem – our experts will be happy to advise you and help define the ideal solution for your application.

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Infrared Emitters with Different Wavelengths

Depending on the heating coil and design of the infrared emitter, radiation can be generated in different wavelength ranges. A distinction is made between short-wave, medium-wave, and long-wave infrared radiation.

Long-Wave Infrared Radiation

Infrared radiation within a spectral range of 3.5 to 6.0 µm is classified as long-wave infrared.

Long-wave IR radiation is characterized by the following properties:

Warm-up time to 100% output: approx. 2–3 minutes
Open system in quartz glass emitters – tube ends are sealed with ceramic end caps
Closed system in ceramic emitters – the heating coil is embedded within the ceramic material
Average specific power between 5 and 20 watts per centimeter of heated coil
Service life of approximately 30,000 to 40,000 operating hours
Highly suitable for continuous processes, less ideal for intermittent or short-cycle operations
Operating temperature of the heating coil up to 650°C

Medium-Wave Infrared Radiation

Medium-wave infrared radiation covers a spectral range of 2.0 to 2.7 µm.

The following properties are characteristic of medium-wave IR radiation:

Warm-up time to 100% output: approx. 1 minute; when using our special heating coils, the warm-up time to 850°C is as short as 35 seconds
Open system – tube ends are closed with ceramic end caps
Limited suitability for vacuum applications
Average specific power between 10 and 35 watts per centimeter of heated coil
Emitter lengths of over 4,300 mm and power ratings up to approximately 11 kW possible
Service life of around 25,000 to 30,000 operating hours
Excellent for continuous processes, conditionally suitable for short-cycle operations
Operating temperature of the heating coil up to 850°C

Short-Wave Infrared Radiation

Short-wave infrared radiation covers a spectral range of 0.8 to 1.6 µm, with fast medium-wave radiation occurring at approximately 1.8 µm.

The following characteristics are typical of short-wave IR emitters:

Warm-up time to 100% output in just 1 second
Closed system – tube ends are hermetically sealed, and the heating coil area is filled with a special gas mixture, making the emitter completely closed to the atmosphere
Highly suitable for vacuum applications
Very high specific power levels achievable
Emitter lengths up to approximately 3,000 mm and power ratings up to 12.5 kW possible
Service life of around 5,000 operating hours
Excellent for short-cycle processes
Heating coil operating temperature exceeding 3,000 Kelvin

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Selecting the Right Emitter

Choosing the correct type of infrared emitter is essential for accurately and efficiently mapping your production processes. The first consideration should always be the absorption behavior of the material to be treated. If the absorption spectrum and the selected wavelength do not match, the component will absorb little to no radiant energy.

We are happy to assist you with initial test trials to determine the most suitable emitter type. In the next step, factors such as process design and environmental conditions must be taken into account. Desired process times, system configuration (e.g. intermittent or continuous operation), and available space also play an important role in defining the optimal emitter design.