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    OBLF QSN 750

    Optical Emission Spectrometer for Universal, High Precision Metal Analysis
    Technical Specification
    • Optical System
      • - Paschen-Runge line up
      • - Temperature stabilised
    • Vacuum System
      • - Automatic vacuum control
      • - Pump duty cycle < 5%
    • Spark Stand
      • - Optimized for low Ar consumption
      • - Patented self cleaning
      • - Spark frequenzy up to 1 kHz
    • Spark Generator
      • - Gated Digital Source (GDS)
      • - Completely maintenance free
      • - Fully semiconductor-based & digital control
    • Software Functions
      • - Windows Software
      • - Automatic precision control
      • - Automatic reprofiling
      • - Automatic averaging
      • - Type calibration
      • - Charge control
      • - Data module for statistic process control
    • Applications
      • - All matrices
    • Installation
      • - dimensions approx. 119 x 130 x 90 cm (wxhxd)
      • - weight approx. 550 kg
      • - permissible operating temp. +10 to +40C
      • - argon supply: 3 bar, Ar 4.8 or better
      • - power connection 230V, 50/60Hz, 1.5 kVA

    Our QSN 750-11 model is a spark emission spectrometer that can be used as a single or multi-matrix system thanks to its 750 mm vacuum optics. This results in a broad field of application, which not only covers the entire range of metal producing and processing enterprises, but also includes a large spectrum of options for material testers and testing institutes. Both the integration system and the photomultipliers, which are arranged in accordance with customer specifications, are housed inside the optics and are therefore protected against external influences. The temperature-stabilised optics and the Gated Digital Source (GDS) technology guarantee a high degree of signal reproducibility and thus analytical constancy. The easy-to-reach self-cleaning and patented spark stand and aperture window enable problem-free maintenance by the user. An exhaust filter ensures the consumed argon is purged.


    I n contrast to the compact GS 1000-11 , the QSN 750-11 can also be used within automated production environments. In such cases, the spectrometer is combined with a sample-preparation device and a sample-handling robot to form a single unit, which naturally also ensures automatic cleaning of the counter-electrode. The analysis results are transferred online to the superordinate computer system using a network connection. In order to guarantee optimum quality control, the spectrometer initiates any necessary control sample readings at certain time intervals, whereby the robot is again responsible for sample handling. With the help of previously defined limiting values, the spectrometer automatically monitors control samples. Key system functions are permanently monitored and if necessary this information is transmitted to other systems.


    A large number of analysis programs can arise especially when using multi-matrix systems to perform extensive analytical tasks. For this reason, the matching spectrometer software, OBLFwin, provides numerous individual programming options to perfectly suit user requirements. In addition, the automatic program selection option simplifies assignment of the right analysis program. Depending on the application, the measured values appear on screen approx. 16-30 seconds after the start of the measuring process and can then be printed out, transferred within the network or evaluated later.