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CHEMUSB4-UV-VIS Spectrophotometer
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The CHEMUSB4-UV-VIS is the perfect
marriage of our USB-interface spectrometer technology and modular
accessories. The system consists of a USB4000 Spectrometer with a
combination deuterium tungsten halogen light source and 1-cm cuvette
holder and high-speed electronics.
The CHEMUSB4-UV-VIS covers
the 210 to 880 nm range, has optical resolution of 1.0 nm (FWHM)
and captures 3648 wavelengths in <1 second.
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Features
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Fully integrated, preconfigured
system covers the
210 to 880 nm range at 1.0 nm (FWHM)
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See changes as small as 0.01 Absorbance Units
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Small-footprint system ideal for the
laboratory and the classroom
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Direct-attach deuterium tungsten
light source and sample holder
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USB 2.0 interface for fast,
hassle-free spectrometer-to-PC connection
Direct-attach Light Source
The CHEMUSB4-UV-VIS features
the USB-ISS-UV-VIS combination sample holder and deuterium tungsten
light source (200-1100 nm). This sampling system holds standard 1-cm
cuvettes for easy-to-perform absorbance measurements. The USB-ISS-UV-VIS
allows you to control both the intensity of the tungsten bulb and the
shutter via software. The USB-ISS-UV-VIS requires an external power
supply (included).
Programmable Microcontroller
The CHEMUSB4-UV-VIS 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.)
Modular Design
Ocean Optics offers complete
line of fiber optic sampling
accessories and teaching tools to
further enhance your CHEMUSB4-UV-VIS 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-UV-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.
Plug-and-Play Operation
The CHEMUSB4-UV-VIS
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.
Specifications
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Physical
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Spectrometer dimensions: |
89.1 mm x 63.3 mm x 34.4 mm |
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Spectrometer weight: |
190 grams |
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Light source dimensions: |
89.1 mm x 77.79 mm x 34.4 mm |
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Light source weight: |
200 g |
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Detector Specifications |
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Detector:
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Toshiba TCD1304AP Linear CCD array |
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Pixels:
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3648 pixels |
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Pixel size:
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8 μm x 200 μm |
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Pixel well depth:
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100,000 electrons |
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Signal-to-noise ratio: |
300:1 (at full signal) |
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A/D resolution: |
16 bit |
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Corrected linearity: |
>99.8% |
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Sensitivity: |
130 photons/count at 400 nm; 60 photons/count
at 600 nm |
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Optical Bench |
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Design: |
f/4, Asymmetrical crossed Czerny-Turner |
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Focal length: |
42 mm input; 68 mm output |
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Entrance aperture: |
25 µm wide slit |
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Grating: |
Grating #1 |
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OFLV filter: |
OFLV-200-850 |
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UV enhanced window: |
Yes, UV4 |
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Fiber optic connector: |
SMA 905 to 0.22 numerical aperture single-strand optical fiber |
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Spectroscopic |
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Wavelength range: |
210 to 880 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.) |
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Optical resolution: |
1.0 nm FWHM |
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Signal-to-noise ratio: |
300:1 (at full signal) |
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A/D resolution: |
16 bit |
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Dark noise: |
50 RMS counts |
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Integration time: |
3.8 ms to 10 seconds |
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Dynamic range: |
2 x 108
(system), 1300:1 for a single acquisition |
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Stray light: |
<0.05% at 600 nm; 0.10% at 435 nm |
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Light Source/Sample Holder |
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Power consumption: |
1.8 A @ 5 VDC; external power supply
(included) |
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Pathlength: |
1 cm |
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Cuvette shape: |
Square |
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Light source: |
Deuterium tungsten |
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"Z" dimension: |
15 mm |
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Bulb life (hours): |
800 deuterium; 2,000 tungsten |
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Time to stabilized output: |
~30 minutes |
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Electronics |
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Power consumption: |
250 mA @ 5 VDC |
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Data transfer speed: |
Full scans to memory every 4 ms with USB 2.0 port,
18 ms with USB 1.1 port |
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Inputs/Outputs: |
Yes, 8 onboard digital user-programmable GPIOs |
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Analog channels: |
No |
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Auto nulling: |
Yes |
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Breakout box compatible: |
Yes, HR4-BREAKOUT |
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Trigger modes: |
5 modes |
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Strobe functions: |
Yes |
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Connector: |
22-pin connector |
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Computer |
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Operating systems: |
Windows 98/Me/2000/XP, Mac OS X and Linux
with USB port; Any 32-bit Windows OS with serial port |
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Computer interfaces: |
USB 2.0 @ 480 Mbps (USB1.1 compatible); RS-232 (2-wire) @ 115.2 K baud |
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Peripheral interfaces: |
SPI (3-wire); I2C inter-integrated circuit |
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Pricing |
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Retail: |
$4619 |
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Applications Scientist
Convenient Wavelength Calibration!
Click here for Details
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CHEM4 Systems for Education
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