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Spectrometer VS 140
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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. |
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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. |
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| 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 others on request |
| Pixel count | 256 |
| Pixel size | 50 µm x 500 µm |
| Optical Specifications | |
| Design | f/2.4, Flatfield Concave Grating |
| Focal length | 140 mm |
| Entrance aperture | 100 µm 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 µm 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 | 14, 15 or 16 bit (customer selectable) |
| 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) |