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CHEMUSB4-VIS-NIR Spectrophotometer
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The CHEMUSB4-VIS-NIR packages a high-tech built-in light source, a USB4000 Spectrometer, a holder for 1-cm cuvettes, and high-speed electronics into a small-footprint system. The CHEMUSB4-VIS-NIR provides real-time, PC-based spectroscopy and captures full spectra from 370 to 985 nm in only 25 milliseconds. The CHEMUSB4-VIS-NIR is available for $3464. |
Fully integrated, preconfigured system covers the 370 to 985 nm range at 1.0 nm (FWHM)
See changes as small as 0.01 Absorbance Units
Small-footprint system ideal for the laboratory and the classroom
Direct-attach deuterium tungsten/violet LED light source and sample holder
USB 2.0 interface for fast, hassle-free spectrometer-to-PC connection
The CHEMUSB4-VIS-NIR uses the USB-ISS-VIS combination sample holder (1-cm cuvette) and violet LED-boosted tungsten light source for measuring relative absorbance. The light source boosts signal in the blue and provides over 45,000 hours of use.
The CHEMUSB4-VIS-NIR uses our USB4000 Spectrometer. The USB4000 features an onboard programmable microcontroller that provides you with considerable flexibility in controlling the spectrometer and accessories. Through a 22-pin connector, you can implement all operating parameters in the software: control light sources, create processes, and retrieve information on external objects. You have access to 8 user-programmable digital Inputs/Outputs for interfacing to other equipment. (Contact an Applications Scientist regarding what you'll need to program the GPIOs.)
Ocean Optics offers complete line of fiber optic sampling accessories and teaching tools to further enhance your CHEMUSB4-VIS-NIR system. Most accessories have SMA 905 connectors for application flexibility; changing the sampling system is as easy as unscrewing a connector and adding new components or accessories.
For even more flexibility, consider the CHEM4-VIS-FIBER. An optical fiber based system, the CHEM4-UV-FIBER lets you quickly and easily couple fiber optic accessories, such as reflection probes or transmission dip probes, to the system's light source.
The CHEMUSB4-VIS-NIR interfaces to a PC, PLC or other embedded controllers via USB 2.0 or RS-232 serial port. When using the serial port, the system requires a single 5-volt power supply (not included). Data unique to each spectrometer is programmed into a memory chip on the USB4000; our spectrometer operating software reads these values for easy setup and hot swapping among PCs.
Serial
port operation tips: When using the serial port, the USB4000
requires a single 5-volt power supply (not included). Also, SpectraSuite
Spectroscopy Software does not support spectrometer operation via the
serial port. However, using the included Serial Port Command Set, you
can write your own software that makes serial port operation possible.
Convenient Calibration
To maintain the quality of your spectrometer's
wavelength calibration, we recommend our drift-free, calibration light
sources. Click here for details.
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Physical |
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| Spectrometer dimensions: | 89.1 mm x 63.3 mm x 34.4 mm |
| Spectrometer weight: | 190 grams |
| Light source dimensions: | 40.7 mm x 88.8 mm x 34.1 mm |
| Light source weight: | 130 g |
| Detector Specifications | |
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Detector: |
Toshiba TCD1304AP Linear CCD array |
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Pixels: |
3648 pixels |
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Pixel size: |
8 μm x 200 μm |
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Pixel well depth: |
100,000 electrons |
| Signal-to-noise ratio: | 300:1 (at full signal) |
| A/D resolution: | 16 bit |
| Corrected linearity: | >99.8% |
| Sensitivity: | 130 photons/count at 400 nm; 60 photons/count at 600 nm |
| Optical Bench | |
| Design: | f/4, Asymmetrical crossed Czerny-Turner |
| Focal length: | 42 mm input; 68 mm output |
| Entrance aperture: | 25 µm wide slit |
| Grating: | Grating #2 |
| OFLV filter: | OFLV-350-1000 |
| Fiber optic connector: | SMA 905 to 0.22 numerical aperture single-strand optical fiber |
| Spectroscopic | |
| Wavelength range: |
370 to 985 nm (The actual range typically exceeds what's listed here. The range listed is where you will see changes as small as 0.01 absorbance units.) |
| Optical resolution: | 1.0 nm FWHM |
| Signal-to-noise ratio: | 300:1 (at full signal) |
| A/D resolution: | 16 bit |
| Dark noise: | 50 RMS counts |
| Integration time: | 3.8 ms to 10 seconds |
| Dynamic range: | 2 x 108 (system), 1300:1 for a single acquisition |
| Stray light: | <0.05% at 600 nm; 0.10% at 435 nm |
| Light Source/Sample Holder | |
| Power consumption: | 160 mA @ 5 VDC; external power supply (included) |
| Pathlength: | 1 cm |
| Cuvette shape: | Square |
| Light source: | Tungsten halogen and violet LED |
| "Z" dimension: | 15 mm |
| Bulb life (hours): | 45,000 |
| Time to stabilized output: | ~5 minutes |
| Electronics | |
| Power consumption: | 250 mA @ 5 VDC |
| Data transfer speed: | Full scans to memory every 5 ms with USB 2.0 port, 18 ms with USB 1.1 port |
| Inputs/Outputs: | Yes, 8 onboard digital user-programmable GPIOs |
| Analog channels: | No |
| Auto nulling: | Yes |
| Breakout box compatible: | Yes, HR4-BREAKOUT |
| Trigger modes: | 4 modes |
| Strobe functions: | Yes |
| Connector: | 22-pin connector |
| Computer | |
| Operating systems: | Windows 98/Me/2000/XP, Mac OS X and Linux with USB port; Any 32-bit Windows OS with serial port |
| Computer interfaces: | USB 2.0 @ 480 Mbps (USB1.1 compatible); RS-232 (2-wire) @ 115.2 K baud |
| Peripheral interfaces: | SPI (3-wire); I2C inter-integrated circuit |
| Pricing | |
| Retail: | $3464 |
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Convenient Wavelength Calibration!
Click here for Details
