Model BTS256-EF -High Accuracy Flicker Meter and General Lighting Spectral Luxmeter
Traditional lux meters are increasingly being replaced by spectral light meters such as the MSC15. However, the lighting industry also needs high accuracy spectral light meters that can handle more complex measurements. These include measurement of pulse width modulated light and the ability to measure both internal and external illumination, determination of thermal transient behavior of lamps, and so on. The primary criterion that such meters must always meet is the quality of their photometric features. Additional electronic features may improve usability and display quality, but they cannot compensate for substandard measurement results. Manufacturers of lamps and luminaires for general lighting purposes must consider light flicker when qualifying product safety in terms of EMC immunity requirements. In addition to the influence of mains voltage fluctuations, flicker effects caused by the lamp and the luminaire itself must be taken into account.
- Hand-held portable splash-proof universal Light Meter with datalogger
- Light Flicker measurement according to CIE:TN-006, CIE:TN-012, IEC TR 61547, IEC TR 63158, Mp ASSIST, JA10, IES:RP-16-10, IEEE 1789-2015, etc.
- Many more measurands as Illuminance and Light Color.: Spectral irradiance, photopic, scotopic and melanopic illuminance, spectral irradiance, PAR, CCT, CRI, color coordinates, Option: WiFi, etc.
- BiTec Sensor for higher measurement accuracy and perfect LED measurement performance, WiFi Optional
- Validated Flicker measurements in Intercomparison campaigns
The European Commission`s Ecodesign Regulation now requires SVM and Pst measurements and even specifies limit values for them.
With the BTS256-EF, Gigahertz Optik GmbH, a renowned measuring device manufacturer, offers a universal measuring device for the determination of all relevant light parameters in general lighting. Combined with a programmable AC source, the BTS256-EF becomes a comprehensive flicker test system for lamps and luminaires including voltage fluctuation immunity tests IEC TR 61547-1:2017. See technical article about the measurement of TLA (Temporal Light Artefacts).
The BTS256-EF is a high-quality measuring device for photometric and colorimetric measurement of general lighting products and conditions.
*One of its unique features is the from Gigahertz-Optik developed innovative BiTec sensor that consists of a V(lambda) filtered Si photodiode and a spectroradiometer unit. This makes it extremely linear, stable, and fast and is therefore a guarantee for higher measurement accuracy which is not accompanied by any disadvantages. Both sensors can be used independently and the mutual correction of the sensors is advantageous for accuracy, speed and versatility.
Thus, the meter supports all the requirements of a modern spectral light meter allowing also high accuracy for LED measurements:
- Cosine field of view illuminance measurement for accurate evaluation of extended illumination (class B DIN 5032 part 7 or AA according to JIS C 1609-1:2006)
- Flicker measurement
- Spectral measurement technology, required for LED light, color, color rendering, color effects
- Photodiode for synchronization to pulse width modulated light and flicker measurement
- alpha-opic illuminance and irradiance measurement (CIE S 026:2018)
- Compact and robust design for portable hand-held use
In its function as a light-flicker meter, the BTS256-EF supports all current flicker measurands/quantities:
- Percent Flicker (IEEE Std 1789-2015, IES: RP-16-10, CIE:TN-006, CIE:TN-012)
- Flicker Index (IEEE Std 1789-2015, IES: RP-16-10, CIE:TN-006, CIE:TN-012)
- FFT Frequency component analysis
- Pst Short term flicker severity (CIE:TN-006, CIE:TN-012, IEC TR 61547)
- Stroboscopic Visibility Measure, SVM (CIE:TN-006, CIE:TN-012, IEC TR 63158)
- Mp ASSIST Flicker perception metric
- Joint Appendix JA10
In addition, the BTS256-EF allows flicker tests according to IEC TR 61547 when operated in combination with power supply LPS-CH-500. These tests aim to probe flicker stability when light sources are operated in an AC circuit under the influence of disturbance signals.