MMS

The extremely compact design is a characteristic feature of the spectrometers in the MMS family. Small designs are possible because high repeatability, not high resolving power is required for many applications.

Product Info benefits design specifications downloads

Product Info

The MMS spectrometer family delivers compact, robust measurement instruments. The spectrometer is equipped with a high performance detector for portable, process and OEM applications. The unique design provides permanent calibration and thermal stability to guarantee accurate and reliable measurements simultaneously for UV and NIR. The absence of any moving parts guarantees long lifetime and high durability.
Components of the MMS family

Cross-section converter as optical input
Imaging grating
Diode array as opto-electronic output
Interfaces, processing software and support

benefits

design

Blazed, flat-field grating for light dispersion and imaging
Comprises an imaging grating, optical port and an uncooled back-thinned detector (CCD) or Si Photodiode array (PDA)
Electric shutter function that enable minimum integration times and ensure high sensitivity (CCD)
Extremely low noise resulting in high S/N even at low light levels (PDA)
Spectral pixel pitch of 0.4 nm/pixel (CCD) and 0.7 nm/pixel (PDA)
Spectral resolution performance better than 3 nm according the Rayleigh criterion
Precision SMA fiber connector with fixed entrance slit (available in various width) allow precise alignment of core fibers
All optical components attached to an aluminium housing

specifications

	CGS UV-NIR CCD	CGS UV-NIR PDA
Optical entrance	SMA-connector 50 µm optical slit (can be varied upon request) NA = 0.22 (homogeneous illumination of the acceptance angle) 600 µm mono-fiber interface recommended for customer	SMA-connector 40 µm optical slit (can be varied upon request) NA = 0.22 (homogeneous illumination of the acceptance angle) 600 µm mono-fiber interface recommended for customer
Grating	Flat-field, 528 l / mm (center) blazed for approx. 230 nm	Flat-field, 528 l / mm (center) blazed for approx. 230 nm
Sensor array	Hamamatsu S11156, Back-thinned CCD, 2048 pixel Height of element: 1 mm Pixel pitch: 14 µm	Hamamatsu S3903, 1024 pixel
Spectral range	190-1,000 nm	190-935 nm
Resolution (FWHM) with 50µm slit	UV-VIS: < 2.2 nm NIR: < 2.5 nm	UV-VIS: < 2.0 nm NIR: < 2.0 nm
Straylight (ASTM 387-04)	3 AU at 240 nm with deuterium lamp (absorption A10 of NaI)	3 AU at 240 nm with deuterium lamp (absorption A10 of NaI)
Integration time (depending from operation electronics)	min. 30 µs	min. 500 µs
Dimensions L x W x H	78 x 30 x 75 mm³	78 x 30 x 75 mm³

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