UV-LED chamber BSL-02 – up to 300 mW/cm² over 46 × 32 cm
The UV LED chamber BSL-02 is an irradiation chamber based on high-power UV LEDs for curing and bonding in the laboratory and in small-batch production. Within an interior of 46 × 32 × 25 cm the wavelengths 365, 385, 395, 405 and 450 nm are available, and the irradiance reaches up to 300 mW/cm² at 385 to 405 nm. The most common UV curing adhesives can therefore be applied within seconds, controlled by a timer from 0.01 s to 9999 h.
Compared to our irradiance chambers of the series BS, the series BSL-02 offers 40 times the irradiance. In addition, the high irradiance allows for very short exposure times.
With the characteristics typical of UV LEDs like „“Instant Start”, the dimmability and the long service life, the BSL-02 is ideal for laboratory tests and the manual production processes. The irradiance is adjustable from 2% to 100%. The integrated timer controls the irradiance precisely. For even better results, we recommend one of our calibrated UVA+ sensors. The dose control is already integrated in the UV-MAT Touch and UV-MAT control units in the BSL-02 UV LED chamber. By means of an optional sensor, the UV-MAT measures the irradiance continuously, and stops the irradiance at the set target dose.
For different applications, wavelengths of 365 nm, 385 nm, 395 nm, 405 nm and 450 nm are available.
Optionally, two wavelengths can be controlled separately. That way, the irradiance chamber can be optimally customized for the requirements of the photoinitiator. The irradiance of the BSL-02 reaches:
- up to 300 mW/cm² at 385, 395 and 405 nm (version HO)
- up to 200 mW/cm² at 365 nm (version HO)
The chamber is also available in the ECO power level; the values per wavelength are listed below under irradiance per power level.
At up to 300 mW/cm² and a connected load of 600 to 1200 W, the heat input stays low thanks to UV-LED technology and active air cooling of the sample chamber – adhesives cure within seconds without damaging temperature-sensitive components.
The BSL-02 has compact outer dimensions, but provides sufficient room in the sample chamber. The floor space is 46 × 32 cm and the height is 25 cm. In the completely closed and monitored irradiation chamber, the operating personnel are fully protected from the UV radiation.
Calculate irradiance and dose of the BSL-02
Set up the BSL-02 virtually in advance:
Calculate irradiance, uniformity and exposure time for each LED wavelength.
Compare wavelength and dose of the BSL-02 in the simulator
Which of the wavelengths 365, 385, 395, 405 and 450 nm suits your adhesive or coating can be explored in the UV irradiation chamber simulator: for the 46 × 32 cm interior of the BSL-02 it calculates the irradiance for each wavelength and the resulting exposure time up to the target dose.
Technical data of UV-LED chamber BSL-02
| Interior chamber | 46 × 32 × 25 cm |
| Dimensions, chamber | 55.5 × 40 × 43 cm |
| Weight | ~ 40 kg |
| Power consumption | 600–1200 W |
| Wavelength | 365, 385, 395, 405, 450 nm |
| Emission, peak tolerance | ± 5 nm |
| Emission, FWHM | 10–20 nm |
| max. irradiance | 250 mW/cm² (450 nm) |
| max. irradiance | 300 mW/cm² (385–405 nm) |
| max. irradiance | 200 mW/cm² (365 nm) |
| Mains | 100–240 V, 50/60 Hz |
| Cooling | air cooling |
| Timer | 0.01 s to 9999 h |
| Resolution | 0.01 s |
| Dose control | with optional sensor |
| PC interface | USB 2.0 |
| Internal security circuit | over-temperature, door contact |
| Classification | group 0 according to DIN EN 12198:2000 |
| Sample temperature | heating of the samples due to high UV irradiation with long exposure |
| Operation temperature | 10 to 40 °C |
| Storage temperature | -10 to 60 °C |
| Humidity | below 80 %, non-condensing |
Spectra of the irradiation chamber BSL-02
The figure shows how close 385, 395 and 405 nm sit together: their flanks overlap, so a photoinitiator with a broad absorption band responds to all three. 365 nm and 450 nm, by contrast, stand clearly apart. With two wavelengths installed, each carries half the irradiance but can be dimmed independently between 2 and 100 %.
Irradiance, spectrum and LEDs
The chamber is available in two power levels. The values are the typical irradiances at an interior height of 30 mm; a shorter distance to the light source raises the irradiance further. They apply to a chamber fully populated with one LED type. With two wavelengths the chamber is populated half with each LED type, so half the irradiance is available per wavelength.
| Wavelength | ECO | HO |
|---|---|---|
| 365 nm | 100 mW/cm² | 200 mW/cm² |
| 385, 395, 405 nm | 150 mW/cm² | 300 mW/cm² |
| 450 nm | 125 mW/cm² | 250 mW/cm² |
The five wavelengths side by side, each normalised to its maximum. The half width is 10 to 20 nm and the peak wavelength matches the nominal wavelength to within ± 5 nm.
| Wavelength | 365, 385, 395, 405, 450 nm |
| Peak wavelength | ± 5 nm |
| Emission, FWHM | 10 to 20 nm |
Equipment in detail
The chamber has a modular design and can therefore be adapted to different applications. These functions are always included:
 | Dose control The irradiance is measured continuously; the UV-MAT ends the irradiation once the set target dose is reached. The UV-MAT Touch offers the same functions but simplifies operation and documentation. |
 | Dimming and spectral adjustment The LEDs can be dimmed continuously from 2 % to 100 %. They are available in five wavelengths for different applications; as an option two wavelengths are available in one chamber and are controlled separately. |
 | Timer As an alternative to dose control the UV-MAT offers an adjustable timer for time-controlled irradiations between 0.01 s and 9999 h. |
 | Irradiation records Irradiations can be recorded with a PC. The UV-MAT Touch also records them to a USB stick without a PC. |
The two irradiation controls compared
| Feature |  | |
|---|---|---|
| Display | capacitive touch display | monochrome, 128 x 64 px |
| Memory | USB stick | – |
| Number of channels | 1 | 1 |
| Irradiance, dose and temperature measurement | yes | yes |
| Time- and dose-controlled irradiations | yes | yes |
| Recording of measurements | yes | – |
| Oscilloscope view | yes | – |
| Screenshots can be saved to a USB stick | yes | – |
| Pausing and restarting irradiations | yes | – |
| Adding notes and comments to an irradiation | yes | – |
| Remote control from a PC | yes | – |
| Irradiation records | on a USB stick | on the PC |
| User management and admin mode | yes | – |
| Simple firmware upgrades | yes | yes |
Both controls use the same sensors, so one sensor can be used with either device.
The UV-MAT Touch is operated through a high-resolution capacitive touchscreen. A Cortex ARM processor provides durability and the ability to update - new functions can be installed on site. The device and the PC software are compatible with Windows 10 and 11. Single- and multi-channel irradiations are shown numerically and graphically, together with oscillograms and the settings. Parameters are set directly on the device and are password protected.
| Sensor inputs | 24 bit, fully digital |
| Number of sensor inputs | 1 |
| Dose setting range | 0 to 1,000,000 J/cm² |
| Dose resolution | 1 mJ/cm² |
| Irradiation time | 0.01 s to 9999 h |
| PC interface | USB 2.0 |
| Sensor recognition | yes |
| Dimensions | 185 × 251 × 100 mm |
| Permissible operating temperature | 5 to 60 °C |
| Feature | UV-MAT Touch | UV-MAT |
|---|---|---|
| Display | capacitive touch display, 5″ WVGA | graphic, 128 × 64 px, monochrome |
| Display output | irradiance and dose, oscilloscope view | irradiance and dose |
| Data recording rate | adjustable: 1 s to 1 h | – |
| Recording period | > 24,000 h | – |
| Storage interface | 1 × USB stick (up to 32 GB) | data export via USB |
Options
These options are available in addition to the standard equipment:
 | Inert gas box The removable inert gas boxes allow work under inert conditions - for example with adhesives that do not cure completely in the presence of oxygen. Separate gas inlets and outlets make it possible to measure the O₂ concentration at the gas outlet. |
 | Remote control option Complex, multi-stage irradiations - for example a pre-irradiation at low irradiance followed by a high-intensity irradiation - can be parameterised with the remote control option. Up to 30 dose- or time-controlled steps and pauses are possible. At the same time the irradiation is logged and stored on the PC. |
Technical data of the radiometer sensors
The calibrated radiometer sensors are available for every LED wavelength. They are traceably calibrated, can be recalibrated and are supplied with a factory calibration certificate; an ISO 17025 calibration certificate from our accredited calibration laboratory is available as an option. The measuring ranges given are our recommendation and can be adapted on request - please state this with your order.
| Sensor type | UVA+ |
| Spectral range | 330 to 455 nm |
| Measuring range, typical | 0 to 10 W/cm² |
| Resolution | 1 µW/cm² |
| Dose measuring range | 0 to 100 MJ/cm² |
| Dynamic range | up to 10⁷ |
| A/D conversion | 24 bit |
| Temperature sensor | integrated |
| Dimensions | Ø 40 mm, height 35 mm |
| Optical area | Ø 6 mm |
| Weight | 160 g |
| Connecting cable | 1.8 m |
| Operating temperature | 0 to 40 °C |
| Storage temperature | -10 to 60 °C |
| Humidity | < 80 %, non-condensing |
Order numbers, scope of delivery, accessories and versions
| Version | Order number |
|---|---|
| BSL-02 HO version | 860902L-HO |
| BSL-02 ECO version | 860902L-ECO |
The HO version (high output) delivers the higher irradiance, the ECO version is the more economical choice for longer exposures.
HO and ECO differ in irradiance; the values per wavelength are listed above under irradiance per power level. Please state the required wavelength with your order.
| Wavelength | Order number |
|---|---|
| 365 nm | -365nm |
| 385 nm | -385nm |
| 395 nm | -395nm |
| 405 nm | -405nm |
| 450 nm | -450nm |
The wavelength completes the order number, for example 860902L-HO-395nm.
| Version | Order number |
|---|---|
| UV-MAT TOUCH | 820930L |
| UV-MAT | 820920L |
The chamber is controlled by the UV-MAT - either as the UV-MAT with a graphic display or as the UV-MAT Touch with a 5-inch touch display and oscilloscope view. Both measure the irradiance and switch off under dose control.
| Order number | 860801X2 |
|---|---|
| Selectable wavelengths | 365 nm, 385 nm, 395 nm, 405 nm, 450 nm |
The chamber can be equipped with a second wavelength; both are controlled separately. The chamber is then populated half with each LED type, so half the irradiance is available per wavelength.
| Designation | Order number |
|---|---|
| PC software UV-MAT TOUCH | 860901 |
| UVA+ sensor | 814447 |
| Inert gas box | 860802i |
| Designation | Order number |
|---|---|
| Calibration | 17025 |
Accredited calibration to ISO/IEC 17025 in our own calibration laboratory.
The sensors are supplied with a factory calibration certificate as standard; an ISO 17025 calibration certificate is available as an option.
Applications of high-power UV-LED chamber BSL-02
- UV curing and UV bonding
- Sealing and encapsulating
- Laboratory investigation
- Manual bonding
