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Benchtop Raman Sensors


    The ChemLogix line of high-performance benchtop Raman spectrometers from TSI is intended to deliver maximum flexibility of application. They are available with a wide variety of sample interface options, so that the user can optimize the use of the instrument to his or her particular application.

    Raman spectroscopy has a unique set of advantages in process control uses. The spectrometers are fiber-coupled to probes that will withstand rugged measurement locations.  These challenging analyses may include corrosive, high pressure and high temperature environments through use of immersion probes, flow-through cells and optical ports.  These strategies permit measurements to be made inside of reactors, fermenters and other synthesis and mixing vessels. Non-contact use through an optical port permits precise measurements with minimal risk of sample contamination. Little or no sample preparation is required and there is no interference from water or carbon dioxide vapor. Measurements are made quickly, and therefore timed sequential assays can be used to observe reaction progress, to ascertain endpoints and to understand the kinetics of processes. 

    Our Raman devices have excellent signal-to-noise characteristics and superior fluorescence rejection which enables a wide variety of laboratory and process control to be performed. These devices are simple and easy to use, and yet produce data of sensitivity and resolution similar to more expensive instruments.  Additionally, they are light weight and easy to move between measurement locations.

    • 785 nm excitation laser, power up to 400 mW, enables short analysis times under most circumstances
    • TEC cooled CCD detector (-60° C) keeps dark current signal contributions low
    • Spectrometer range 250-2350 cm-1, 10 cm-1 resolution (average across entire range)
    • Every system is delivered with control and acquisition software, RamanReader
    • Data files can be saved as .txt, .spc, .dat or .bmp formats, can be imported into GRAMS or spreadsheets for post-processing
    • Both non-contact and immersion fiber optics probe styles available with 3, 7 or 10 mm working distance
    • Suitable for harsh environments, such as corrosive liquids, high temperature and pressure
    • On-line process control, including PAT measurement opportunities: structural determination, polymorphic forms, hydrogenation, aqueous solution measurement, phase transformation and reaction monitoring
    • Drug product manufacturing prospects such as lyophilization, fermentation, drug distribution in products such as dermal patches, formulation, blending and head space analysis
    • Chemical industry: polymerization and synthesis progress
    • Geological, mineral and gemstone ID, pharmaceutical, carbon nanotubes and graphene production 

    The PRORAMAN-I industrial process Raman analyzer instrument is driven by a frequency-stabilized diode laser operating at 785 nm.  The spectrometer has a spectral range of 250-2350 cm-1, and the detector is cooled to minimize dark current. The resolution of the system is about 7 cm-1.  The graphic user interface of the control and data acquisition program is shown in Figure 1.  In the top panel, a single spectral acquisition is shown.  In the bottom panel, a time series is portrayed.  In this screen, individual peak heights can be monitored in time, as well as ratios between peaks of interest.  Symbion-RX software is available for process control applications as an option.

    The EXPERTRAMAN-W is a system with very similar specifications to the ProRaman, with wider spectral coverage.  The spectrometer has a range from 250-3250 cm-1, with resolution averaged over the entire range of approximately 10 cm-1.  As with the ProRaman instrument, the RamanReader software has automated wavenumber and intensity calibrations, and can be mated with Grams/AI to perform database searching.  

    Application Notes

    Raman App Notes

    Learn more about our Raman instruments and the many applications in which they are used by reading our library of application notes.

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