Sunday 3 April 2011

Infrared Spectroscopy

  
infrared spectroscopy

Infrared Spectroscopy- Chemical Composition and Identification of Polymers and Organic Compounds

   
             FT-IR, Fourier Transform Infrared Spectroscopy, is an exceptional means for the profiling and screening of sample compounds. FT Infrared Spectroscopy testing is used to identify the chemical compounds in a wide range of products, including coatings, foods, paints, pharmaceuticals, consumer products, and polymers, to name a few. FT Infrared Spectroscopy is a useful analytical device for the detection of functional groups and describing covalent bonding data.
          In addition, FT Infrared Spectroscopy testing is useful in the determination and identification of all kinds of inorganic and organic compounds, identification of compounds in mixtures, as well as chromatographic effluents, functional groups of organic materials, and the molecular makeup of surfaces. Other FT Infrared Spectroscopy testing applications include impurities screening, contamination identification, gas calibration, and both qualitative and quantitative scans. In other words, FT Infrared Spectroscopy is a robust real-time monitoring methodology for the quantification and detection of multiple compounds in a simultaneous manner.  
             Normally, FT Infrared Spectroscopy equipment and systems do not need to be calibrated. Calibration is not required due to the use of a standards library that includes calibrated infrared spectra stored on the hard disk drive of the system (or instrument) computer. Basically, the FT Infrared Spectroscopy testing system transmits an IR (infrared) beam of light through an area that is to be analyzed, then captures this beam after passing through the area and finally generates a full infrared spectrum of the light, resulting in the identification of the materials present and allows for the concentration to be identified.

Helium Mass Spectrometer Leak Detector




Varian VSPR021
The VS PR02 is a portable Helium Mass Spectrometer Leak Detector with a fully integrated DS 42 rotary vane primary pump. This powerful instrument is extremely easy to use, without sacrificing valuable functionality.
Ø                  Features
Ø                  Totally automatic startup and tuning/calibration routine
Ø                  Touch screen with intuitive menu structure make it is easy to navigate
Ø                  High clarity, wide angle, TFT color display provides excellent visibility
Ø                  High Test Port Pressure allows short cycle times, and detection of large leaks
Ø                  High Sensitivity (5 x 1012 MDL) meets the most stringent test requirements
Ø                  High Helium Pumping Speed ensures fast response and cleanup
Ø                  New spectrometer optimizes sensitivity and mass separation
Ø                  Multiple language and units capability facilitates worldwide use
Ø                  Compact, lightweight design enables easy transporting of instrument
Ø                  Automatic test cycle sequencing with selectable roughing and test times
Ø                  3 leak rate set points, 1 pressure set point, and 1 audible leak rate alarm
Ø                  Set points w/ selectable greater than or less than settings
Ø                  Turbo High Vacuum Pump is totally maintenance free.
Ø                  Protection from air inrushes caused by power failures and possible operator errors.
Ø                  Split Flow function allows accurate testing of vacuum process systems
Ø                  Useful for sniffing and/or vacuum applications, to measure or locate leaks
Ø                  Specifications
Ø                  Primary pump DS 42, 2 m3/hr (34 l/m)
Ø                  Minimum Detectable Leak 5 x 10 12 mbar l/s, atm cc/sec, 5 x 1013 Pa m3/sec
Ø                  Maximum Test Pressure 13 mbar, 10 Torr, 1330 Pa
Ø                  He Pumping Speed (fine test) 1.8 l/s
Ø                  Calibration routine Automated or Manual, to Internal or External leak
Ø                  Background suppression Pushbutton initiated Auto Zero, and Auto Zero < Zero
Ø                  User Interface High Clarity, Color Display, TFT Touch Screen
Ø                  Selectable languages English, French, German, Japanese, Korean, Mandarin, Spanish
Ø                  Automated Cyclin Programmable Rough Time, Test Time, Reject Set points
Ø                  Set Points 5 Set points, N/O or N/C; 3 Leak Rate, 1 Pressure, 1 Audio
Ø                  Response time <0.5 sec
Ø                  Communications Interface RS 232 isolated@ 9600 baud (DB9)
Ø                  Conformance Standards UL/CSA, CE
Ø                  Weight 38 kg (83 lbs)
Ø                  Size, mm (in) 567 (22.3) L, 396 (15.6) W, 441 (17.4) H
Ø                  Power Requirements 100 VAC, 50 Hz, or 115 VAC, 60 Hz, 20 A
Ø                  Max. Branch Circuit Breaker: 20A w/ motorrated delay