Generators and stands are designed to excite the atomic spectra of samples for qualitative and quantitative atomic-emission spectral analysis of various materials. They are a universal devices that are a part of atomic emission spectral systems along with generators of arc and/or spark discharge.
The unit is designed for excitation of powder samples in an electric arc atomic emission spectral analysis using the pour-blowing method. It provides high performance routine analysis, characterized by low consumption of graphite electrodes and is used in conjunction with any spectral instruments – "Grand", СТЭ-1, ДФС-458, МФС-8, PGS-2, etc.
The compact monobloc integrates electromechanical components conveying the sample flow and automatic calibration of the electrodes gap, generator up to 40A and a computer communication module.
The system provides highly stable operation. Arc powering system based on a modern semiconductor components, which allows to achieve high efficiency and stabilize the discharge current, regardless of the electrodes condition and the sample flow. The mechanism of the electrode gap calibration and funnel on the outer casing of the combustion chamber to ensure accuracy of the sample flow and maintaining a distance between electrodes during continuous operation. Fastening of the funnel is arranged in such a manner that its cleaning or replacement does not lead to further alignment relatively to the electrode gap.
Technical support |
|
Maximum consumption power, W |
3000 |
Pulse frequency, Hz |
1, 5, 10, 20, 50, 100, 200, 400, 625, 833, 1000 |
Arc current operating range, A |
5 ÷ 40 |
Energy conversion efficiency (at 800W, active load 2Ω), % |
90 |
Current stability, % |
1 |
Electrodes material |
graphite, copper |
Electrodes dimensions, mm: - diameter - length |
6
50 ÷ 200 |
Performance, samples per hour |
60 ÷ 90 |
Sample feed conveyor, mg/s |
1 ÷ 20 |
Sample flow path purification degree, % |
99,5 ÷ 99,9 |
Type of control |
computer |
Power supply |
monophase, 220V, 50Hz |
Dimensions, mm |
400´450´300 |
Weight, kg |
32 |
Features