The optical emission spectrometer QSG 750 of the West German company OBLF Spectrometry GmbH can rightly be called a flagship model. This single or multi-matrix model is ideal for all applications requiring the lowest possible limits of detection, maximum reproducibility, and additional metallurgical information about the analyte. The range of applications ranges from the main industries of steel or rolling mills and metalworking industries up to research institutes and universities.
At first glance, the QSG 750-II is comparable to the QSN 750-II . Both models have original identical dimensions, hardware components that have proven their practical reliability: a temperature-stabilized 750 mm vacuum optical chamber , a strobe-pulse generator with a time-selected current selection (GDS technology) with freely variable parameters, a self-cleaning spark stand . Used argon is cleaned by a filter. Easily dismantled design simplifies the necessary service performed by the user.
The main difference from other OBLF instruments lies in the data recording system based on the GISS technology developed by OBLF (Gated Integration of Single Sparks - Gated Integration of Single Sparks). The GISS recording technology, combined with real-time processing of the single spark intensities of all measurement channels, together with time-resolved spectroscopy, makes numerous additional applications possible. Single spark spectrometry (or PDA - pulse distributed analysis - pulse distribution analysis) provides the necessary information about the microscopic composition of the sample, the homogeneity of the sample, the amount of dissolved and undissolved component (for example, aluminum in steel), and also allows you to detect and determine inclusions. To provide these opportunitiesThe OBLFwin spectrometer software contains additional features for identifying bad samples or inclusions. All single spark data can be exported to another computer. Time-resolved spectroscopy can reduce spectral interference and significantly improve detection limits for a number of elements compared to standard spectrometers. It opens up new possibilities in the analysis of pure metals.
All QSG 750 multifunction instruments can be operated manually or automatically for a wide range of applications, especially in the steel industry. In the automatic case, the sample is placed by a robot, and the counter electrode is cleaned by a device specially adapted to the spark stand. The measured values are automatically transferred to the slave systems using a network connection. An integrated modular software system manages and monitors the performance of the spectrometer. The job responsibilities of the system also include the management of analyzed and recalibrated samples.
Characteristics
| Paschen-Runge optical design | 750 mm |
| grating resolution | 2400 lines/mm |
| Inverse dispersion for 1st order | 0.55 nm/mm |
| Wavelength range | 120-800 nm |
| Spark discharge frequency | 1 - 1000 Hz |
| Argon purity | 99.998% |
| Argon consumption per one burn in Fe-matrix | Max. 2.4 l |
| Argon consumption during waiting | capillary |
| Instrument dimensions | 1040 x 900 x 1300 mm |
| Net weight | 550 kg |
Advantages of the optical emission spectrometer OBLF QSG 750-II:
