CN203241344U

CN203241344U - Computer multi-element analyzer

Info

Publication number: CN203241344U
Application number: CN 201320124337
Authority: CN
Inventors: 夏赞贵
Original assignee: NANJING NONGBO ANALYTICAL INSTRUMENT Co Ltd
Current assignee: NANJING NONGBO ANALYTICAL INSTRUMENT Co Ltd
Priority date: 2013-03-18
Filing date: 2013-03-18
Publication date: 2013-10-16
Anticipated expiration: 2023-03-18

Abstract

The utility model discloses a computer multi-element analyzer. The computer multi-element analyzer comprises an electric arc furnace, a carbon-sulfur analysis box, a colorimetric analysis box, an electronic scale, a computer and a single chip microprocessor; the carbon-sulfur analysis box is used for analyzing the content of carbon element and sulfur element in the electric arc furnace and inputting a digital signal corresponding to the carbon element and sulfur element to the single chip microprocessor; the colorimetric analysis box is used for analyzing the content of other trace elements except the carbon element and sulfur element in the electric arc furnace and inputting a digital signal corresponding to the trace element into the single chip microprocessor; the electronic scale is connected with the single chip microprocessor; the single chip microprocessor is communicated with the computer through RS232; the computer is also connected with a printer and a display screen. The computer multi-element analyzer is high in detection precision and convenient to operate; the computer is communicated with the single chip microprocessor through the RS232, the remote automatic control is realized.

Description

The computer multi-element analyser

Technical field

The utility model is a kind of microelement analyzer.

Background technology

Progress along with science and technology, every profession and trade is more and more higher to the requirement of product quality, for the product that adapts to the every field such as metallurgy, casting, mining, building, machinery, electronics, environmental protection, health, chemical industry, electric power, technical supervision detects needs, chemical constitution in the domestic and international common element analyser test material, elemental analyser commonly used is generally spectroanalysis instrument and conventional chemical analyser.

Spectroanalysis instrument is to utilize the physical method analysis, utilizes the electric spark excited sample, the photoelectric tube sampling, and quick and convenient, detection elements is many, but expensive, and is high to conditional requests such as analysis environments;

And chemical analyzer adopts traditional analysis to detect more, traditional analysis exists low to conditional requests such as analysis environments, accuracy of detection is high, the advantage such as easy to operate, but also exist detection speed slow, once can only analyze an element, use the shortcomings such as the easy contaminated environment of chemical reagent, detect simultaneously the coherent element composition and will overlap instruments, all the other elements of the another set of detection of a cover detection carbon-sulfure elements with two.And detection elements analysis major part is measured according to langbobier law, because langbobier law is the index of coincidence rule, therefore the ideal linearity that obtains to measure also is difficult, affected thus actual measurement result, traditional detection method does not just satisfy the needs of analyzing linearity like this, thereby need to often carry out the loaded down with trivial details correction work such as calibration.

Summary of the invention

The purpose of this utility model is to propose a kind of computer multi-element analyser, and accuracy of detection is high, easy to operate, and analyst coverage is wide, and a cover instrument can be measured relevant elemental composition simultaneously.Computing machine has been realized remote auto control by RS232 and single chip communication.

In order to realize above purpose, the technical scheme that the utility model adopts is: the computer multi-element analyser, it is characterized in that, and comprise electric arc furnaces, analysis of carbon and sulfur case, colorimetric analysis case, electronic balance, computing machine and single-chip microcomputer; Carbon-sulfure elements content and the digital signal that carbon-sulfure elements is corresponding are input to single-chip microcomputer in the analysis of carbon and sulfur case analysis electric arc furnaces; The colorimetric analysis case is analyzed other micronutrient levels except carbon-sulfure elements in the electric arc furnaces and the digital signal of corresponding trace element correspondence is input to single-chip microcomputer; Electronic balance links to each other with single-chip microcomputer; Single-chip microcomputer is by RS232 and compunication.

For ease of data-printing and demonstration directly perceived, computing machine also is connected with printer and display screen.

Compared with prior art, the utility model has the advantage of: accuracy of detection is high, easy to operate, and analyst coverage is wide, and a cover instrument can be measured relevant elemental composition simultaneously.Computing machine has been realized remote auto control by RS232 and single chip communication.

Description of drawings

Fig. 1 is the utility model principle block diagram.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

The utility model is comprised of computing machine, electronic balance, analysis of carbon and sulfur case, single-chip microcomputer, colorimetric analysis case, electric arc furnaces, printer and display screen.During work sample got into thin particle, when analyzing carbon-sulfure elements sample is added in the crucible of arc burning stove, adding suitable adjuvant burns under pure oxygen environment, produce CO2 and SO2 gas, then burning gases are imported the analysis of carbon and sulfur case, Single-chip Controlling analysis of carbon and sulfur case under the computer software effect moves, and analyzes the correlation parameter of burning gases; When analyzing all the other elementary compositions sample is passed through the processing of chemical reagent, add suitable chromogenic reagent, obtain the proportional different chromophoric solutions of each element, each solution is measured at the colorimetric case, obtain the related concentrations parameter of corresponding element according to lambert-Beer law.

Obtaining of all these parameters all amounts to the RS232 PORT COM of calculating software control, and control signal and simulating signal are sent in the single-chip microcomputer according to analyzing needs.Single-chip Controlling 3 road carbon combustion of sulfur passages, gas channels, analysis channel according to absorption, the colorimetric of burning gases, obtain the integral combustion amount of CO2 and SO2 gas; Monolithic processor controlled all the other 5 the tunnel be the chromophoric solution of measuring all the other each elements than the chrominance channel.

When normal the measurement, analytical standard sample at first, after the process measuring process, the per second sampling obtains concentration or the absorbance of each element for 6 times, the concentration of each element or the percentage composition of absorbance and corresponding element are stored, behind 3 above samples of general analysis, the data and the true origin that store are fitted to curve, common fitting becomes curve y=k*x+b or quafric curve y=k1*x*x+k0*x+b, and the curve of each measurement point and match shown at coordinate, observe the relation of matched curve and each measurement point, suitably delete the large measurement point of deviation, again matched curve, the curve of Select Error minimum so just can fit within the sample in the different content scope in the same curve as working curve, when measuring sample with the concentration of element or the absorbance substitution working curve that measure, just obtain meeting the linear result who requires, thereby improve the linearity of instrumental analysis.On Single-chip Controlling, using 12 A/D modulus ic chip L7109 to carry out analog to digital conversion measures, for the antijamming capability that improves measurement and the precision of measurement, measurement data is carried out 6 samplings of per second then average filtering, use light-coupled isolation at control solenoid valve passage simultaneously, avoid electromagnetism to the disturbance of sampled signal, Effective Raise antijamming capability and sampling precision.

The utility model is to utilize traditional chemical method to measure.Because the traditional analysis instrument is measured according to langbobier law, because langbobier law is the index of coincidence rule, therefore be difficult to the ideal linearity that obtains to measure, utilize the precision of the correction energy Effective Raise instrument detection of software, because traditional analysis wants two cover instruments could satisfy the requirement that detects conventional element, the utility model is by the organic combination of computing machine, by the software control upper and lower computer in addition, the test section is integrated into a cover instrument, has simplified analytical procedure.

Reach designing requirement through above software and hardware in conjunction with the utility model.

Claims

1. the computer multi-element analyser is characterized in that, comprises electric arc furnaces, analysis of carbon and sulfur case, colorimetric analysis case, electronic balance, computing machine and single-chip microcomputer; Carbon-sulfure elements content and the digital signal that carbon-sulfure elements is corresponding are input to single-chip microcomputer in the analysis of carbon and sulfur case analysis electric arc furnaces; The colorimetric analysis case is analyzed other micronutrient levels except carbon-sulfure elements in the electric arc furnaces and the digital signal of corresponding trace element correspondence is input to single-chip microcomputer; Electronic balance links to each other with single-chip microcomputer; Single-chip microcomputer is by RS232 and compunication.

2. computer multi-element analyser according to claim 1 is characterized in that, computing machine also is connected with printer and display screen.