VEOS

Featuring cutting-edge detector technology on the basis of semiconductor detectors that were specially developed for emission spectroscopy, OBLF’s VeOS spark emission spectrometer enables versatile, flexible and quick analysis of all common metallic materials. The analytical spectrum also includes the precise analysis of short wavelength elements like nitrogen or low carbon.

Benefits

Complete and flexible inclusion of all analytical tasks
Easily extendable features
The latest, specially developed detector technology
Excellent performance with regard to detection limit, precision, stability
Robust design for use in heavy-duty environments
Most comprehensive multi-matrix application options without any restrictions
regarding the selection of elements for analysis
Accurate detection of N and traces of carbon (ULC)

More Infos

OBLF’s VeOS is the first spark spectrometer to feature a semiconductor-based detector system whose analytical performance – including the spectral resolution required for a laboratory spectrometer – is every bit as good as established photomultiplier-based systems. This brand new photo-detector technology was specifically developed for spark emission spectroscopy and guarantees excellent results over the entire required wavelength range of 130 to 800 nm. The design of the light-sensitive detectors, which are characterised by a surface that is 100 times more light sensitive than detectors found in conventional systems, was specially adapted to suit the requirements of emission spectroscopy. As a result, this is the first device to offer the best possible combination of spectral sensitivity and spectral resolution along with an innovative design that both guarantees OBLF’s well-known quality and the greatest flexibility of use. In addition to this, the VeOS model comes in a new, 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-stabilised vacuum optical system. As in all OBLF spectrometers, the VeOS 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 new Windows®-based spectrometer software, OBLFWin, permits simple operation of the machine and offers all the usual settings needed for spark spectroscopy.

Technical Data

Optics

spectrometer in Paschen-Runge mounting
Rowland circle diameter 500 mm
wavelength range 130-700 nm
optics and read-out electronics temperature stabilised to ± 0.1°C for excellent long-term stability
cooled optics and read-out system
automatic computer controlled profiling
optimised detector lines for each wavelength region
high UV sensitivity without sensor coating
shock resistance

Vacuum System

evacuated light metal chamber
maintenance free 2-stage rotary vane pump
vacuum pump integrated in cabinet
pump duty cycle <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

Electronics

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

Dimensions & Weight

width 74 cm
height 134 cm
depth 115 cm
weight about 300 kg

Power Supply

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

Environmental Conditions

operation temperature 10 – 40 ºC

Computer-Hardware

standard computer system
MS Windows® 7 operating system with custom specific regional and language settings

Software

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 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
single spark evaluation module as option
Module for the display of emission spectra and line definition