EMG-22 express multicomponent gas-analyzer

Main technical parameters

number of defined gas-mixture components	200
resolving power of mass-spectrometer	600
Sensitivity	20 ppm
Average square deviation of a random component of the error for the estimation of isotopic U235/U238 indication	0,1%
mass range a.u.m.	1-800
measured concentration range, % vol	0,1-100
lower limit of measured concentration, ppm	10
analysis time (sec, not more than)	1
operating setup time (h)	1
panoramic view	400 lines of mass-spectrum
Full-cycle time of estimation of U235/U238 indication by uranium hexaflourine, not more than	3 min
power consumption, (W)	120
supply voltage (V)	~220
weight, kg	60
overall dimensions, mm	800x600x1200
Setup area	2 m

EMG-22 is developed on the basis of time-of-flight mass-spectrometer and used for the estimation of uranium hexafluorine isotopic composition. The device provides automatic analysis of isotopic composition either at the laboratory or within the technological cycle.

At the beginning of 2001 special tests of experimental model of EMG-22 took place at the Ural electrochemical complex (Novouralsk, Sverdlovskaya obl.)

An established 6-channel sample preparation system running from EMG-22 was tested.

Test results:

High reliability of the gas-analyzer
Outstanding analytical characteristics of the device
Easy and comfortable utilization of EMG-22

The hardware of EMG-22 ensures:

Automatic probes and standards commutation in accordance with the given algorithm
Percent estimation of gas-composition
Archiving of the analysis results
Automatic diagnostics of all units

Using mass-spectrum panoramic-view mode one can clearly see full data on isotopic composition, including information on all the admixtures present in the particular sample.

Panoramic view of mass-spectrum

The full-cycle time of a single sample analysis is 3 minutes. Estimation begins when U235/U238 indicators has stable exponents. Such algorithm ensures high stability and accessibility of the analysis results.

Ratio of areas U235/U238 and U238

ENG-22 is a device of a special manufacturing design, it is solid and combined from electronic blocks of modern high-tech characteristics.

The weight, dimensions and power consumption of EMG-22 are much lower than that of MI-1201 AGM-01 mass-spectrometers (produced by PO "Electron", Sumi) presently utilized at the Ural electrochemical complex.

The results of the described test were presented at the seminar organized by Co-ordination Council of Technologies and Science of the Atom Energetic Ministry of Russian Federation at the field of mass-spectral equipment and were highly valued by specialists present there.