CHEMUSB4-UV-VIS Spectrophotometer

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.

Features

• Fully integrated, preconfigured system covers the 210 to 880 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 light source and sample holder

• 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

Physical
Spectrometer dimensions:	89.1 mm x 63.3 mm x 34.4 mm
Spectrometer weight:	190 grams
Light source dimensions:	89.1 mm x 77.79 mm x 34.4 mm
Light source weight:	200 g
Detector Specifications
Detector:	Toshiba TCD1304AP Linear CCD array
Pixels:	3648 pixels
Pixel size:	8 μm x 200 μm
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 #1
OFLV filter:	OFLV-200-850
UV enhanced window:	Yes, UV4
Fiber optic connector:	SMA 905 to 0.22 numerical aperture single-strand optical fiber
Spectroscopic
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.)
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:	1.8 A @ 5 VDC; external power supply (included)
Pathlength:	1 cm
Cuvette shape:	Square
Light source:	Deuterium tungsten
"Z" dimension:	15 mm
Bulb life (hours):	800 deuterium; 2,000 tungsten
Time to stabilized output:	~30 minutes
Electronics
Power consumption:	250 mA @ 5 VDC
Data transfer speed:	Full scans to memory every 4 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 (with the USB-ADP-BB adapter)
Trigger modes:	5 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:	Call for Price