The scientific grade spectrometer
The QEPRO is the most sensitive spectrometer ocean optics has ever developed. This scientific grade spectrometer is especially well suited for low light level and advanced measurements, such as absorption, reflectance, Raman spectroscopy and fluorescence.
A 15,000 spectra buffer ensures data integrity at high collection rates and an advanced optical design and thermoelectric cooler combine to provide thermal stability over long-term measurements. Whether for high speed or wide concentration range measurements, the QE Pro brings exceptional performance to your lab or process application. Buffering enables full-Spectrum kinetics measurements to be performed every 8 milliseconds or 125 measurements per second.
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- Wavelength range: 185-1100 nm
- Buffering : 15,000 spectra
- TEC: Cooling to -40°C below ambient
- -40°C to +50°C temperature limits
- Back-thinned 2d ffT-ccd detector
- Thermoelectric cooling
- High-speed electronics
- Onboard programmable micro-controller
- 10 user-programmable digital inputs/outputs
| DETECTOR | |
|---|---|
| Type | Back-thinned 2d ccd detector |
| Detector range | 185 – 1100 nm |
| Active pixels | 1024 x 58 |
| Pixel size | 24.6 μm2 |
| Pixel well depth | 1000 Ke- |
| Peak QE | 90% |
| QE @ 250 nm | 65% |
| Sensitivity | ~ 0.065 counts / e- |
| SPECTROSCOPIC | |
| Wavelength range | max. 825 nm |
| Optical resolution | ~ 0.14 - 7.7 nm (fWhm) |
| Signal-to-noise ratio | 1000 : 1 |
| Dark noise | 3 rms counts |
| Dynamic range | 25000 : 1 |
| Integration time | 8 ms - 15 minutes |
| OPTICAL BENCH | |
| Design | f/4, symmetrical crossed czerny-Turner |
| Focal length | 101.6 mm input and output |
| Entrance aperture | 5, 10, 25, 50, 100 or 200 μm |
| Grating options | 14 different grating options, UV through shortwave nir |
| Fibre optic connector | SMA 905 to 0.22 numerical aperture single-strand optical fibre |
| PHYSICAL | |
| Dimensions | 182 x 110 x 47 mm |
| Weight | 1.18 kg (without power supply) |
| ELECTRONICS | |
| Power consumption | 500 mA @ 5 VDC no TE cool; 3.5 A @ 5 VDC with TE cool |
| Data transfer speed | Full spectrum every 7 ms with USB2.0 |
| Inputs/Outputs | 10 onboard digital user-programmable GPIOs |
| Temperature & Thermoelectric (TE) COOLING | |
| Temperature limits | 0°C to 50°C for spectrometer, no condensation |
| Temperature range | 13°C maximum range between the high and low |
| Lowest set point | 40°C below ambient, to -15°C |
| Stability | ±0.1 o C of set temperature in ≤ 2 minutes |
| COMPUTER | |
| Operating systems | Windows, mac os, Linux |
| Computer interfaces | USB 2.0 @ 480 mbps; rs-232 (2-wire) @ 115.2 K baud |
| Peripheral interfaces | SPI (3-wire); i2c integrated circuit |
Low-noise electronics and an 18 bit A/D converter double the QE Pro’s dynamic range and increase its sensitivity by a factor of two compared with typical back-thinned CCD array miniature spectrometers. These enhancements drive applications benefits such as improved lower limit of detection for both absorption and fluorescence measurements, and enable measurements over a wider concentration range
