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LEDs enable much greater control of the lighting quality than the technologies they are rapidly replacing. Many international standards now specify requirements for internal and external lighting systems in terms of both ‘quality’ and ‘quantity’ of light as well as in terms of efficiency and life time. Photometry in the lighting industry generally focuses on the intensity (i.e. illuminance) and color (i.e. correlated color temperature CCT and color rendering index CRI) of light falling on a surface. LED lamps are extremely versatile in terms of emission spectra, which is why spectral measurement of the illuminance and color has now become essential for any high-end light meters.


The MSC15 – compact, handheld, and low cost

The MSC15 from Gigahertz-Optik GmbH is a modern light meter whose technical concept allows for precise measurement of the illuminance spectrum, color, and color rendering. Its cutting-edge design concentrates on measurement accuracy rather than unnecessary esoteric electronic features which results in a high quality meter for an attractive price. The light sensor consists of a fast spectroradiometer that covers a spectral range between 360 nm and 830 nm (V-lambda range according to CIE S023) with a spectral bandwidth of 10 nm. The device also integrates an optical bandwidth correction feature (CIE 214) in order to further improve the quality of the values calculated based on the spectral measurement data. Another key feature that ensures accurate illuminance measurements of extended lighting conditions is its carefully designed field of view.  Accurate illuminance measurements are only possible with a precise, cosine-corrected entrance optic. The MSC15 has an excellent cosine response (f2≤ 3 %), at the same time as offering a wide measurement range for  illuminance and color between 1 lx and 350,000 lx. The colored touch screen of the device makes it extremely easy to use. Uninterrupted operation of more than 8 hours is provided by its lithium ion battery which is recharged via the USB 2.0. Remote control of the device and data read out are made possible by the supplied software. In addition the MSC15 is equipped with an internal memory  which can be used to store up to 10 measurements measurements internally and read them out via software later.


Calibration of the MSC15

One essential quality feature of photometric devices is their precise and traceable calibration. The MSC15 is calibrated by Gigahertz-Optik’s calibration laboratory that is accredited by DAkkS (D-K-15047-01-00) for the spectral responsivity and spectral irradiance according to ISO/IEC 17025. Every device is supplied with its respective calibration certificate.


Additional functions of the MSC15

The MSC15 also includes additional functions for use in specialist fields of lighting.

LED grow lights need to be measured in terms of the Photosynthetically Active Radiation (PAR) they produce. An additional function of the MSC15 is the display of Photosynthetic Photon Flux Density (PPFD) in µmol/m²s (400 nm to 700 nm) which is a measure of the total number of photons within the PAR wavelength range that reach a surface each second per square meter area.

Neonatal phototherapy lamps used for the treatment of hyperbilirubinemia can be accurately measured in accordance with the latest standards and guidance, irrespective of the lamp type or manufacturer. The MSC15 directly displays total irradiance for bilirubin, Ebi (mW/cm2) in accordance with IEC 60601-2-50:2009+A1:2016 as well as average spectral irradiance (µW/cm2/nm) in accordance with the latest American Academy of Pediatrics recommendations.

Human Centric Lighting requires new metrics beyond traditional photometric and colorimetric values (ref. CIE TN 003:2015). The MSC15 directly displays melanopic irradiance, melanopic illuminance (equivalent melanopic lux) and melanopic daylight equivalent illuminance.

 

Options for the MSC15:

-       Software development kit for integration of the device in the user’s own software

MSC15 for measurement of the illuminance, spectrum, color, and color rendering in the lighting industry
Touchscreen for intutive handling of the meter
Display of photopic lux, CCT and CRI Ra
Display of the spectral power distribution, photopic lux and CCT
Display of the CRI's
Display of photopic and scotopic lux and their ratio.
Display of melanopic lux, etc. according to CIE TN 003: 2015 and Well building Standard
Display of PAR and the spectral power distribution
Display of Bilirubin according IEC 60601-2-50 and the spectral power distribution
Display of Bilirubin according AAP and the spectral power distribution
CIE 1931 view
Example measurement in the MSC15's software
General
Short description

Spectroradiometer for measurement of the illuminance, spectrum, light color, and color rendering

Main features

Mobile meter, spectroradiometer with a 10 nm optical bandwidth and additional optical bandwidth correction (CIE214), precise cosine field of view function, Lithium ion battery with over 8 operation hours

Measurement range

1 lx to 350,000 lx, 360 nm to 830 nm

typical applications

Precise spectral light meter for the lighting industry

Calibration

Factory calibration. Traceable to international calibration standards

Product
MSC15

Handheld meter for illuminance and light color. Color-Touchscreen, simple intuitive Operation with clearly arranged display views. Storage of 10 measuring points and selection of different display views is possible.

(Class B according DIN 5032-7 or AA according to JIS C 1609-1:2006)

 

Measured Quantity

Illuminance photopic
Illuminance scotopic
Spectral Irradiance
Color coordinates (x,y)
CCT
CRI (color rendering index)
PAR– PPFD
Melanopic irradiance
Melanopic illuminance (equivalent melanopic lux)
Melanopic daylight equivalent illuminance
Total irradiance for bilirubin (Ebi)
Average spectral irradiance for bilirubin (AAP)

Input optics

Diffuser window with 10mm diameter, cosine corrected field of view, f2 ≤ 3 %

Spectral Detector
spectral range

(360 - 830) nm

 

Optical Bandwidth

10 nm

optical bandwidth correction applied according to CIE 214

Measurement range typ. white LED

(1 - 350000) lx

 

CCT Measurement range

(1700 - 17000) K

ΔCCT

± 50K (standard illuminant type A)

± 4% (depending on the LED spectrum)

Δy Δx uncertainty

± 0.002 (Standard illuminant A)

Repeatability

± 0.0002

Calibration
Calibration uncertainty

Illuminance (standard illuminant A) +/- 3%

Illuminance (typ. LED) +/- 4%

(Traceable to national standard. Uncertainty of the standard is included)

Miscellaneous
Interface

USB 2.0

temperature range

Operation: 10°C to +30°C

Storage: -10°C to +50°C

Power Supply

5VDC by USB

Power Supply

rechargeable battery

minimum 8h of operation

Display

Color Touchscreen

Weight

160 g

Dimensions

136 mm x 74 mm x 32 mm

Type Description File-Type Download
Datasheet MSC15 PDF
Produktname Product Image Description Show product
Article-Nr Modell Description Request / Compare
Product
15298960 MSC15

MSC15 measurement device, USB cable, case for device and USB cable, S-MSC15 software as a download, calibration, calibration certificate

Re-calibration
15300569 K-MSC15-I

Calibration of the MSC15 including wavelength adjustment. Calibration certificate

Software
15306347 S-SDK-MSC15

Software development kit

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