Gigahertz-Optik GmbH
An der Kälberweide 12
82299 Türkenfeld / Germany
Fax:
Email:
BTS256-LED
LED-tester for Illuminance
The BTS256-LED tester is designed to measure the total flux and luminous color in their relevant units of single assembled and unassembled LEDs. Its many innovative design features makes the LED tester ideal for all applications where accurate luminous flux and color measurement of the individual LED is required as in binning and sorting. In many applications the single LED or LED matrix is integrated into luminaires for general lighting. The light output of these devices is typically specified in illuminance as a function of the distance between luminaire and the surface under illumination. Lighting designers and architects (product picture 1) involved in display, outdoor, landscaping or interior lighting are usually interested in illuminance levels. With the BTS256-LED-DA adapter the BTS256-LED tester can be set-up as an illuminance and luminous color meter to support the complete production process of the luminaire manufacturer. The BTS256-LED-DA adapter with its 20mm diameter diffuse window and bayonet style mount is quickly and simply attached to the BTS256-LED tester and interchangeable with the cone adapter supplied. After selecting the illuminance measurement mode in the software the instrument is ready to act as a lux meter for spot sources. Beside illuminance all relevant luminous color data is measured and displayed. The BTS256-LED’s Bi-technology sensor including photometric photodiode and diode array spectrometer ensure accurate results independent of the light source. Calibration is performed by Gigahertz-Optik’s calibration laboratory for light measurement quantities against calibration standards traceable to national and international metrology laboratories. Re-calibration is recommended every 12 months.
Product Pictures
Picture 1: Example of the typical way to specify the distance dependent Illuminance of luminaires
Picture 2: The BTS256-LED LED-Tester designed for luminous flux measurements of single LEDs can simply be configure for LED illuminance and LED luminous color measurements of spot lamps by the diffuser window adapter BTS256-LED-BA with bayonet mount
Specifications (Data)
| Sensor Design | BiTech Sensor with fine photometric matching photodiode and 256 pixel CMOS photodiode array. Integrated shutter for remote controlled offset compensation. |
| Integral Sensor | integration time setting from 100µs to 6s. Seven (7) measurement ranges with correction range transcendent offset correction. 12Bit SAE ADC |
| spectral response with fine CIE photometric matching. On-line correction by spectral source data | |
| illuminance resolution 0.2 lx; Max illuminance value 250000000 lx | |
| Spectral Sensor | spectral range 380 to 750nm. Pixel resolution 1.5nm. Optical resolution 5nm |
| integration time setting from 5.2ms to 30s. | |
| remote operated shutter for dark signal measurements with identical integrating time than that of the measurement. Delay 100ms open state, 100ms close state | |
iIluminance measurement range (white light):
|
|
| illuminance calibration uncertainty +/-4% | |
| peak wavelength: +/- 1nm | |
| dominant wavelength: +/- 1nm | |
| Δx, Δy reproducibility: Standard Illuminant A +/-0.0001, LEDs +/- 0.0002 at 2000cts peak power | |
| Δx, Δy uncertainty: Standard Illuminant A +/-0.005, LED +/- 0.005 average, max +/-0.01 | |
| CCT Measurement range: 1700 to 17000 K | |
| ΔCCT: Standard Illuminant A 50K; LED up to +/-6% depending of LED spectrum | |
| color Rendering Index Ra and R1 to R14 | |
| Cosine Diffuser | 20mm diameter diffuse quartz glass in adapter with bayonet style mount |
| specified cosine corrected field of few 60° total | |
| cosine matching 5 % within the specified F.O.V. | |
| Microprocessor | 16Bit, 25ns instruction cycle time |
| Power | 5VDC to 7VDC, 250mA peak during aux lamp capacitance loading |
| Remote interface | RS232: 115200Baud, 8D, IS, N; 9PIN SUBD connector with PIN for DC voltage |
| USB to RS232 converter with DC voltage transfer function from PC USB | |
| Software | device set-up for auto or manual ranging with set-able integrating time, on-line or single offset compensation, frequency synchronization |
| measurement modes: CW, manual and automatic data logger | |
| measurement data: Illuminance, Color Temperature, xy, u’v’ Color coordinates, Dominant wavelength, CRI color rendering Index (Ra, R1 - R14), Peak wavelength, Peak Intensity | |
| graphical displays: Emission spectrum, CIE 1931 (x,y) and CIE 1976 (u’, v’) chromaticity diagram | |
| measurement data storage in ASCI format | |
| Temperature | operating: 10 to 30°C Storage: -10 to 50°C |
| Dimensions/Weight | 160mm (6.3 in) L x 85mm (3.3) W x 60mm (2.4 in) H. Weight: 500g (1.1 lb) |
| Carrying case | hard case, 333 x 280 x 70mm, 650g |
Ordering Information
| Model | Item No.: | Description |
| BTS256-LED | 102494 | Measurement device with BTS256-LED-CA10 cone adapter, RS232/USB adapter, hard case, operation manual, software CD, calibration certificate with data user CD |
| BTS256-LED-DA | 102622 | Diffuser window adapter with bayonet type mount. Calibration in illuminance (lx) |
| Re-Calibration: | ||
| K-BTS256-LED-DA-I | 301355 | Re-calibration of BTS256-LED tester with BTS256-LED-DA adapter in illuminance [lx] und spectral responsivity |
| Accessory: | ||
| BTS256-LED-CA5 | 102620-1 | Cone adapter with 5mm diameter |
| BTS256-LED-CA6 | 102620-2 | Cone adapter with 6mm diameter |
| BTS256-LED-CA7 | 102620-3 | Cone adapter with 7mm diameter |
| BTS256-LED-CA8 | 102620-4 | Cone adapter with 8mm diameter |
| BTS256-LED-CA9 | 102620-5 | Cone adapter with 9mm diameter |
| BTS256-LED-CA10 | 102620 | Cone adapter with 10mm diameter |
| BTS256-LED-CA11 | 102620-6 | Cone adapter with 11mm diameter |
| BTS256-LED-CA12 | 102620-7 | Cone adapter with 12mm diameter |
| BTS256-LED-CA13 | 102620-8 | Cone adapter with 13mm diameter |
| BTS256-LED-CA14 | 102620-9 | Cone adapter with 14mm diameter |
| ISD-21-V01 | 102733-01 | Integrating sphere for luminous flux of LEDs under test operated outside of the sphere. 210 mm diameter. 63.5 mm measurement port diameter. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. Replaces model UMBB-210-BTS256LED |
| ISD-50-V01 | 102732-01 | Integrating sphere for luminous flux of LEDs under test operated outside of the sphere. 500 mm diameter. 127 mm measurement port diameter. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. Replaces model UMBB-500-BTS256LED |
| ISD-50HF-V01 | 102717-1 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere. 500 mm diameter. UMSH-AP-500 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-50HF-V02 | 102717-2 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere or outside of the sphere trough the 127mm diameter measurement port. 500 mm diameter. UMSH-AP-500 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-100HF-V01 | 102693-1 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere. 1000 mm diameter. UMSH-AP-1000 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| ISD-100HF-V02 | 102693-2 | Integrating sphere for luminous flux of LEDs under test operated inside of the sphere or outside of the sphere trough the 254mm diameter measurement port. 1000 mm diameter. UMSH-AP-1000 sample holder. Auxiliary lamp. Optional calibration K-BTS256LED-U-I. |
| K-BTS256LED-U-I | 300265 | Calibration or re-calibration of luminous flux [lm] and spectral flux of the BTS256-LED with ISD-type integrating sphere |
| BTS256-LED-ALP | 102621 | DC power supply to operate the auxiliary lamps of ISD-type integrating spheres in constant current mode. BTS256-LED-C-ALP interface adapter for remote On/Off control |
| GB-GD-360-V01 | 102654-1 | Photogoniometer for LEDs and LED lumiares for operation with BTS256-LED Tester |
Related Products
| Model | Description |
| X4 with X4-BTS | Light analyzer for illuminance and irradiance |
| X9-1 with VL-3704-4 | Illuminance lightmeter |
| X1-1 with VL-3701-4 | Illuminance lightmeter |
| P-9710-1 with PD-9310A-2 | High sensitive illuminance lightmeter |
| P-9710-2 with VL-3701-2 | Illuminance flash energy lightmeter |
| HCT-99D | Illuminance and luminous color lightmeter |
| P-9801 with CT-4501-1 | Illuminance and luminous color flash lightmeter |