QSG 750-II0 pages

QSG 750-11

Optical Emission Spectrometer

for Ultimate Performance

Metal Analysis

, 3000 -

2500 -

Al Intensity die

I Technical Specification*

1. Optical System

- Paschen-Runge line-up

- temperature stabilised

2. Vacuum system

- automatic vacuum control

- pump duty cycle < 5%

3. Spark stand

- optimized for low Ar consumption

- patented self cleaning

- spark frequency up to 1 kHz

4. Spark generator

- Gated Digital Source (GDS)

- completley maintenance free

- fully semiconductor-based & digital control

5. GISS-Functions

- time-resolved spectroscopy

- online processing of single spark intensities

- elimination of line interferiences

- spectral background reduction

and optimized limits of detections

- selectable integration windows

for each installed channel

- determination of soluble/insoluble components

- free definable algorithms for the

determination of inclusions

6. Software Functions

- Windows™ Software

- automatic precision control & averaging

- automatic reprofiling

- type calibration

- charge control

- data module for statistic process control

7. Applications

- all matrices

8. Installation

- dimensions approx. 119 x 130 x 90 cm (wxhxd)

- weight approx. 550 kg

- permissible operating temp. +10 to +40°C

- argon supply: 3 bar, Ar 4.8 or better

- power connection 230V, 50/60Hz, 1.5 kVA

3

Our QSG 750-11 spark emission!

spectrometer can also be called

OBLF's flagship model. This

single- or multi-matrix model is ideal for

all applications demanding the lowest

possible detection limits, the highest

degree of reproducibility and additional

metallurgical information about the

analyte. The application spectrum goes

from primary producers like steel mills

or other smelteries through metal:

processing companies right up to

research institutes and universities.

At first glance, the QSG 750-H is

comparable with the

QSN 750-11 model. Given

identical dimensions, it is also fitted

with tried-and-tested hardware

components like the temperature-

stabilised 750 mm vacuum optics, the

Gated Digital Source (GDS) technology

with freely definable parameters and the

patented, self-cleaning spark stand. An

exhaust filter ensures consumed argon is

purged. The easy accessibility of all key

device parts simplifies service tasks that

need to be performed by the user.

The main difference to the other

OBLF spectrometers lies in the

data logging system, which is

based on the GISS technology (Gated

Integration of Single Sparks) developed

by QBLF. In combination with logging

and online processing of the single spark

intensities of all measuring channels,

time-resolved spectroscopy gives rise to

many additional applications. Single

spark spectrometry (or PDA pulse

distributed analysis), for instance,

provides critical information about the

microscopic composition of the sample.

In this respect, key words are the

detection of inhomogeneous samples,

differentiation between dissolved and

undissolved components (e.g.

aluminium in steel) as well as the

detection and determination of

inclusions. To ensure best possible use

can be made of these options, the

OBLFwin software not only includes all

standard functions (materials control,

automatic program selection, etc.), but

also provides additional features that

permit simple definition of parameters

when a bad sample is detected or when

analysing inclusions. All the single spark

data can be made available for export to

other computer systems. Time-resolved

spectroscopy can reduce spectral

interference and substantially improve

the detection limits of many elements in

comparison to standard spectrometers.

This opens up completely new avenues

when analysing pure metals.

All of the QSG 750-11 model's

many functions are available for

manual and automated

operation, as many applications have

shown in the steel industry in particular.

In such cases, sample handling is

performed by a robot and the counter-

electrode is cleaned by a special unit

fitted to the spark stand. The measured

values are automatically transferred to

superordinate systems using a network

connection. Integrated software modules

control and monitor the functionality of

the spectrometer. These functions also

include analysing control and

recalibration samples.

Contact: OBLF Ges. fOr Elektronik & Feinwerktechnik mbH, Salinger Feld 44, D-58454 Witten,

Tel. +49 2302 9879-0, Fax: +49 2302 9879-80, Email: info@oblf.de, Internet: www.oblf.eu