Model PI-200 -Online Process Raman System

 With the 1200 grooves/mm grating, the spectral coverage is ~ 2100 cm-1 at 785 nm excitation. The grating is adjustable to allow use with excitation from 670 to 860 nm. The spectra can be exported in SPC or ASCII formats.

Excitation Source

• 785 nm Frequency Stabilized, Narrow Linewidth Laser.
• Laser power (adjustable):  450 mW standard.
• Higher power levels available - up to 1,500mW
• Line width ~ 1.0cm^-1.
• Wavelength accuracy ± 0.1nm.
• Wavelength repeatability (on/off) -< 0.15 cm^-1 .
• Wavelength stability -< 0.3 cm^-1drift per week.
• Laser lifetime -1 year warrenty (6 year projected lifetime).
• Patented design - Pat. No. 6,100,975.

Raman Fiber Optic Probe

• Inphotonics Raman Probe standard (other probes types available).
• 200µm diameter excitation fiber, 400µm collection fiber.
• Focal length - 5mm standard, 3 meter fiber optic cable.
• Rayleigh filtering built into probe tip (>8 O.D.).
• System can accommodate most any Raman probe configuration.
• Probes manufactured from 316-SS, carbon steel, alloy-20, hastelloy, etc.
• Ball probes also available.
• Lowest Raman shift that can be measured ~225 cm^-1.
• ATEX Zone 0 certified.

CCD Detector

• Andor DU401-FI (standard) Higher performance CCD detectors available.
• TE cooling to < -60° - 82° C for low noise applications.
• Pixel size = 26 µm square and full range area of 128 x 1024 pixels.
• Other CCD configurations available; e.g., 256 x 1024 pixels..

Spectograph

• Spectograph aperture: f/2.0.
• Focal length: 135 mm.
• Patented design: No. 6,028,667.
• Diffraction grating: 1200 grooves/mm, ruled standard (other gratings available upon request).
• Resolution: 4 cm^-1with 785 nm excitation.
• Spectral coverage: with 785 nm excitation ~2100 cm^-1, with 830 nm excitation the spectral coverage is ~1900 cm^-1 .
• Fiber optic coupling: bundle to slit adapter with 100 µm fibers (17 fibers) in a linear input array (3.3 mm high) for coupling to spectrograph.
• Temperature controlled: ~30° C for added stability.
• Image curvature at exit plane: < 0.5 pixel over full height of CCD array.
• User adjustable center wavelength via rotating grating.
• Builtin neon lamp for wavelength calibration.

Packaging

• Online 19" rack mount dimensions (80" x 23" x 40"), weight ~ 430 lbs.
• Online Purged enclosure rack mount (72" tall x ~ 28" wide x ~ 36" deep)

Multiplexing

• Up to 18 channels with fiber switcher (17” x 17” X 10”), weight 55 lbs.
• Insertion loss is less then 1 dB.
• Switching time between channels is ~ 0.5 s.
• Patented design:  No. 6,859,581B1.

Online Instrument

• Includes backup laser with an AUTO SWAP feature to automatically switch in the backup laser should the primary laser fail.
• Includes a backup computer with hot swappable ARAID drives that can be quickly used if the primary computer should fail.
• Lasers can be easily switched out with no user optical alignment.
• Software features include automatic X- and Y-axis calibration, real time chemometrics, and continuous laser tracking to ensure stable operation.
• Backup features along with auto calibration ensure that there is minimal downtime (typically < 2 hours/year/channel).
• Includes modeling for 1^st year of use, model training at our facility.
• Remote monitoring of system health available.

System Software

• Data collection with real time chemometrics, laser frequency tracking, multipoint neon lamp absolute wavelength calibration, and throughput normalization features for chemometric model transfer capability.
• Auto calibration features available
• Interface with a DCS system, RS485, RS232, or TCP/IP .
• Data files can be exported into ASCII and SPC formats.

System Stability

• Amplitude stability ± 0.2 % over 24 hours after 30 minutes warmup.
• Frequency stability ± 0.1 cm^-1 over 24 hours after 30 minutes warmup.

Power Requirements

• 115 to 230 VAC, 47 to 63 Hz, 10A

System Warranty

• Two year on both laser and instrument.