CHEMUSB4-UV-VIS Spectrophotometer, Low cost 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 and operating software.
• The CHEMUSB4-UV-VIS covers the 200-850 nm range, has optical resolution of 1.0 nm (FWHM) and captures 3648 wavelengths in <1 second.
• Fully integrated, preconfigured system covers the 200-850 nm range at 1.0 nm (FWHM)
• Small-footprint system ideal for the laboratory and the classroom
• Direct-attach deuterium tungsten light source and sample holder
• 10 µs integration time
• USB 2.0 interface for fast, hassle-free spectrometer-to-PC connection.
• 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.

General specifications

• Spectrometer dimensions: 89.1 mm x 63.3 mm x 34.4 mm
• Spectrometer weight: 190 g
• Light source dimensions: 198 x 105.1 x 40.6 mm
• Light source weight: 200 g
• 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
• Connector: 22-pin connector
• Computer interfaces: USB 2.0 @ 480 Mbps (USB1.1 compatible); RS-232 (2-wire) @ 115.2 K baud
• Operating systems: Windows 98/Me/2000/XP, Mac OS X and Linux with USB port; Any 32-bit Windows OS with serial port.

Detector Specifications

• Detector: Toshiba TCD1304AP Linear CCD array
• Detector range: 200-1100 nm (the CHEMUSB4-UV-VIS is preconfigured to cover the 200-850 nm range)
• Pixels: 3648 pixels
• Pixel size: 8 micrometer x 200 micrometer
• Pixel well depth: 100,000 electrons
• Signal-to-noise ratio: 300:1 (at full signal)
• A/D resolution: 16 bit
• Dark noise: 12 RMS counts
• Corrected linearity: >99.8%
• Sensitivity: 130 photons/count at 400 nm; 60 photons/count at 600 nm
• Fiber optic connector: SMA 905 to 0.22 numerical aperture single-strand optical fiber
• Optical resolution: 1.0 nm FWHM
• Integration time: 3 µs to 65 seconds
• Dynamic range: 2 x 108 (system), 1300:1 for a single acquisition
• Power consumption: 1.8 A @ 5 VDC; external power supply (included)
• Pathlength: 1 cm
• Cuvette shape: Square

Source Specifications

• Light source: Deuterium tungsten
• "Z" dimension: 15 mm
• Bulb life (hours): 800 deuterium; 2,000 tungsten
• Time to stabilized output: ~30 minutes

TheSpectroDirect is a modern single-beam spectrophotometer with an excellent price/performance ratio that is specifically designed for water testing. The instrument is equipped with a wide range of pre-programmed methods based on the proven range of Lovibond® tube tests, tablet reagents, liquid reagents and powder reagents (Vario Powder Packs).

• Wavelength range from 330 to 900 nm
• Interface RS232
• Large illuminated graphic display
• Touch-sensitive film keypad with logical layout
• Use of round vials and rectangular cells of different sizes without adapter
• Fast, easy lamp change
• Software updates free of charge

TheSpectroDirect is a single-beam spectral photometer (see illustration). The light source is a tungsten halogen lamp with flash function. The lamp is switched on only momentarily during of the measurement process1), so there is no need for a warm-up period.

On the back of theSpectroDirect photometer, there is an RS232 interface with a 9-pin D-Sub connector for connection of a PC or a printer with serial interface (see accessories).

A wavelength scan is performed over the user-defined interval between 330 and 900 nm. The display shows the graph of the spectrum; if the user presses a key, the display also shows a data list with the corresponding maximum and minimum absorption levels.

Application exemple: FIA

• The USB4000 is the last-generation flagship spectrometer, with a 3648-element Toshiba linear CCD array for increased signal-to-noise and enhanced electronics for controlling the spectrometer and accessories.
• The Integration Time setting in our software is specified by the user. It's analogous to the shutter speed of a camera: the value specified for the integration time is the amount of time the detector "looks" at the incoming photons. Because the Toshiba detector has an electronic shutter, using software you can specify minimum integration times as short as 10 µs, allowing you to measure transient events like laser pulses. The ability to integrate the spectrometer for brief durations eliminates saturation problems that can occur in high light-level applications such as laser analysis.
• The USB4000's onboard programmable microcontroller 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.
• The USB4000 provides you with an affordable, high-performance 3648-element linear CCD-array detector with an optical bench that's small enough to fit into the palm of your hand. The USB4000 works the same way as other Ocean Optics spectrometers; it accepts light energy transmitted through single-strand optical fiber and disperses it via a fixed grating across the linear CCD array detector, which is responsive from 200-1100 nm.
• At Ocean Optics, we understand that your work is unique and that you want a spectrometer to fit your specific needs. Working with one of our application scientists, we help you determine which configuration will best work for you. When selecting the USB4000 -- you can choose from 14 gratings, 6 slits and hundreds of fiber optic accessories such as light sources, probes and optical fibers to create the optimal system for your application.
• When you purchase a USB4000, you can also choose from Ocean Optics' complete line of spectroscopic accessories. 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, such as light sources, sampling holders, filter holders, flow cells, fiber optic probes and sensors, collimating lenses, attenuators, diffuse reflectance standards, integrating spheres and our extensive line of optical fibers.
• To properly configure a USB4000 Spectrometer for your application, you'll need to specify one of the detector options listed in the table below.

  DET4-200-850	sorting filter 200-850 nm
  DET4-350-1000	sorting filter 300-1000 nm
  DET4-UV	UV upgrade
  DET4-VIS	VIS

• The USB4000 interfaces to a PC, PLC or other embedded controllers via USB 2.0 or RS-232 serial port. 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

• Dimensions: 89.1 mm x 63.3 mm x 34.4 mm
• Weight: 190 grams
• Toshiba TCD1304AP Linear CCD array
• Detector range: 200-1100 nm
• 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
• Dark noise: 12 RMS counts
• 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: 5, 10, 25, 50, 100 or 200 µm wide slits or fiber (no slit)
• Grating options: 14 different grating options, UV through Shortwave NIR
• HC-1 grating option: No
• Detector collection lens option: Yes, L4
• OFLV filter options: OFLV-200-850; OFLV-350-1000
• Other bench filter options: Longpass OF-1 filters
• Collimating and focusing mirrors: Standard or SAG+UPG
• UV enhanced window: Yes, UV4
• Fiber optic connector: SMA 905 to 0.22 numerical aperture single-strand optical fiber
• Wavelength range: Grating dependent
• Optical resolution: ~0.3-10.0 nm FWHM
• Signal-to-noise ratio: 300:1 (at full signal)
• A/D resolution; 16 bit
• Dark noise: 24 RMS counts
• Integration time: 10 µs to 65 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
• Power consumption: 250 mA @ 5 VDC
• Data transfer speed: Full spectrum 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, USB4-BREAKOUT
• Trigger modes: 5 modes
• Strobe functions: Yes
• Connector: 22-pin connector
• 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

Portable turbiditymeter MICRO IR

The portable waterproof turbidity meter MICRO IR with infrared light source (860 nm) is designed to measure turbidity over the range 0 to 1,100 NTU with a detection limit of 0.01 NTU in accordance with ISO 7027 / DIN/EN 27 027.

The automatic 3-point calibration feature makes unit calibration easy. All the user has to do is press the CAL key and then measure the 3 turbidity standards.

The unit is supplied complete with the turbidity standards (0.02 / 100 and 1,000 NTU) as well as 4 AAA alkaline manganese batteries and a 25 mm test vial.

• Principle: nephelometric (90° scattered light)
• Light source: IR-LED (860 nm)
• Keypad conditional acid and solvent resistant; membrane switch keypad with audible feedback
• Auto - Off automatic switch off approx. 20 minutes after last key press
• Display: Graphic-Display
• Update Software update via Internet.
• Memory capacity Memory 1000 data sets with date, time and registration number.
• Sample volume: approx. 12 ml
• Range: 0.01 to 1100 NTU (Auto range)
• Resolution: (NTU) 0.01 from 0.02 - 9.99(NTU), 0.1 NTU from 10.0 - 99.9, 1 NTU from 100 - 1100
• Accuracy: (NTU) ± 2 % of reading or 0.01(NTU) (0 - 500), ± 3 % of reading (500 - 1100)
• Ambient conditions temperature: 5-40°C at 30-90% relative humidity (non condensing).
• Interface RS232 for printer and PC- connection; 9-pin D-sub-mail connector; data format ASCII.
• Power supply 7 NiCd rechargeable batteries (Type AA/Mignon with 750mAh); wall plug mains adapter (Input: 100-230V, 50-60Hz; Output: 15V;530mA) and Lithium battery (CR 2032, 3V) for data storage and real time clock.
• Weight: (instrument) approx. 1000 g including batteries and power pack
• Dimensions: approx. 265 W x 195 H x 70 D
• Specifications meets ISO 7027
• Approval CE
• Guarantee 2 years