Spectrometer VS 140

The VS 140 NIR spectrometer is a high resolution, small, portable, and rugged low cost linear array spectrometer (download datasheet (535kB)). It covers a wavelenghtrange from 800-1700nm. The spectrometer is equipped with a high sensitiv InGaAs PDA (e.g. Hamamatsu G9203-256D, Sensors Unlimited SU256). The device has a high throughput (f/2.4) and very low straylight.

It communicates via true USB 2.0 plug and play interface. The unit is powered by USB (selfpowered hub or pc). Thermoelectric cooling is optional available.

The spectrometer can be operated with the intuitive measuring software VersaSpec (for a demo version see Software Section). The VersaSpec software measures reference, absorbance, transmission/ reflection and allows different spectra calculations. A polynomial fit wavelength linearization is included. An other feature of this software is the real time export to Excel.

Specifications
Physical Parameters
Dimensions	178 mm x 123 mm x 58 mm
Weight	0.6 kg
Detector Specifications
Detector	Hamamatsu G9203-256D InGaAs PDA or Sensor Unlimited SU256/256-LD InGaAs PDA
Pixel count	256
Pixel size	50 痠 x 500 痠
Optical Specifications
Design	f/2.4, Flatfield Concave Grating
Focal length	140 mm
Entrance aperture	100 痠 wide input slit (other dimensions available)
Fiber input	SMA 905
Dispersion	70 nm/mm
Wavelength range	800-1700 nm
Optical Resolution	~7 nm (FWHM, 100 痠 slit))
Pixel Resolution	~3.5 nm/pixel
Stray light	<0,2 ‰ (LP1300 nm, λ = 900 nm/1500 nm)
Sensitivity (@1500 nm):	1100 ct/pWs (G9203-256D) 1400 ct/pWs (SU256)
Electrical parameters
SNR	~8500 (Full scale/mean (STD))
A/D resolution	15 bit used (16 bit ADC)
Integration time	5 .. 65000 ms
Interface	USB 2.0 fullspeed
Power supply	Powered by USB (self powered hub or PC)
TE Cooling	Optional (additional 6 .. 12 V, 3A powersupply necessary)