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  • Titelbild


The OBLF OS.5c spark emission spectrometer allows a versatile, flexible and fast analysis of all common metallic materials. Equipped with state-of-the-art detector technology, the metal analyzer enables precise determination of the material composition at an attractive device price. The analytical spectrum also includes the precise analysis of short wavelength elements like phosphorus, sulfur or nitrogen.







  • Complete and flexible inclusion of all analytical tasks
  • Easily extendable features
  • The latest, specially developed detector technology
  • Good performance with regard to detection limit, precision, stability
  • Robust design for use in heavy-duty environments
  • Most comprehensive multi-matrix application options
  • Compact spectrometer
  • vacuum optics
More Infos

OBLF’s OS.5c is a compact spark spectrometer to feature a semiconductor-based detector system whose analytical performance – including the spectral resolution required for a laboratory spectrometer – is comparable to established photomultiplier-based systems. The OS.5c allows the determination of all common elements which are analyzed in spark spectrometry.

In addition to this, the OS.5c model comes in an operator-friendly housing. Being both simple to operate and of compact, solid design, the spectrometer is highly suitable for use in production environments but also for goods receipt and materials control purposes as well as in test labs with diverse analytical tasks. Subsequent extensions of the analytical capabilities are easily possible without having to make major system changes.

In order to guarantee that external conditions at the place of installation cannot influence the system, the detectors and the specially developed readout system have been housed in the temperature and vacuum-stabilised optical system. As in all OBLF spectrometers, the OS.5c makes use of maintenance-free, digital GDS III excitation, which, in conjunction with short analysis times, enables optimised spark discharges to be generated for any given application. Thanks to OBLF’s patented automatic pulse cleaning system, the optimised spark stand only requires very infrequent maintenance and can be operated at low cost. The modern Windows®-based spectrometer software, OBLFWin, permits simple operation of the machine and offers all the usual settings needed for spark spectroscopy.

Precise instructions on how to operate the spectrometer and use the software are naturally given during installation. The customer only has to ensure availability of a power and an argon supply.

Technical Data


  • spectrometer in Paschen-Runge mounting
  • Rowland circle diameter 500 mm
  • optics and read-out electronics temperature stabilised to 36°C ± 0.1°C for excellent long-term stability
  • automatic computer controlled profiling
  • optimised detector lines for the used wavelength region
  • high UV sensitivity without sensor coating
  • shock resistance
  • evacuated light metal chamber
  • maintenance free 2-stage rotary vane pump
  • vacuum pump integrated in cabinet
  • pump duty cycles <5%
  • oil diffusion protection
  • automatic pressure regulation and stabilisation

Spark Generator

  • Gated Digital Source (GDS) with integrated multi-spark system
  • maintenance free
  • spark frequency up to 1 kHz
  • unipolar medium voltage discharge
  • separate parameter for pre-sparking and integration selectable
  • variable excitation parameters & discharge characteristics selectable by software
  • Ignition voltage 20kV

Spark Stand

  • Argon purged spark stand, optimised for low Ar consumption
  • patented self-cleaning
  • open sample stand for easy handling
  • low-wear top plate with 12 mm opening
  • optionally adapters for small parts and wires are available
  • low-wear tungsten electrode
  • pneumatic sample clamp for rapid sample handling
  • automatic electrode cleaning as option
  • About 3 l Argon consumption per measurement
  • easy maintenance


  • 16 Bit AD conversion for each pixel
  • DSP processor controlled sensor read-out
  • USB interface to spectrometer PC

Dimensions & Weight

  • width 70 cm
  • height 116 cm
  • depth  100 cm
  • weight about 300 kg

Power Supply

  • 230V; 50/60 Hz; 1,5 kVA
  • 200 W in stand-by mode

Environmental Conditions

  • operation temperature 10 – 40 ºC


  • standard computer system
  • MS Windows® 10 operating system with custom specific regional and language settings


  • OBLFwin spectrometer program
  • easy routine operation
  • freely configurable sample IDs
  • automatic repeatability control for measurements
  • automatic averaging
  • warning signal if calibration is exceeded
  • bad sample detection as option
  • as many analysis programs to customer specifications as required
  • individual analysis parameters for each program
  • multivariate calibration model (incl. line overlaps and matrix effects)
  • easy and simultaneous recalibration of a complete matrix
  • automatic program selection
  • type calibration and type measurement
  • spectrometer control sample measurements
  • average and standard deviation from chosen measurements
  • automatic reminder of regular recalibration
  • grade control by comparison with grade database settings
  • automatic display of of selected grade or material number
  • freely editable grade database
  • printout of certificates
  • analysis database
  • several statistical functions as display of control charts
  • automatic analysis data export
  • system check preceding each analyse
  • system diagnostics module
  • software supported maintenance tasks, for example entrance window cleaning
  • Module for the display of emission spectra and line definition


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