CN205426346U - Atomizer graphite oven temperature -detecting device - Google Patents
Atomizer graphite oven temperature -detecting device Download PDFInfo
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- CN205426346U CN205426346U CN201520978903.7U CN201520978903U CN205426346U CN 205426346 U CN205426346 U CN 205426346U CN 201520978903 U CN201520978903 U CN 201520978903U CN 205426346 U CN205426346 U CN 205426346U
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Abstract
The utility model provides an atomizer graphite oven temperature -detecting device which characterized in that: it includes end (2), is equipped with into light aperture (201) on end (2), end (2) dress is at the front end in module darkroom (3), is equipped with collector lens (4) on lieing in the light path of light aperture (201) into in module darkroom (3), is equipped with infrared pyroelectric sensor (5) on the emitting light path of collector lens (4), module darkroom (3) dress is in base groove (601) of mount pad (6), and the fixed dress in base groove is worn out on preamplification board (7) to the installation end of infrared pyroelectric sensor (5), and preamplification board (7) fixed dress is on mount pad (6), and preamplification board (7) are connected with control lead wire (8). The utility model discloses the physical characteristic who utilizes ultra -red intensity of object radiation and temperature to have certain dependence combines current electron and optical technique, realizes 3000 degrees the detection from normal atmospheric temperature to high temperature of a sensor to at the temperature control of whole graphite oven within range, can both improve the temperature accuracy, improve the atomization efficiency and the accuracy of measurement of graphite oven.
Description
Technical field
This utility model belongs to scientific analysis Instrument technology field, the most just relates to atomic spetrophtometry instrument, especially relates to the atomizer graphite furnace temperature-detecting device of atomic spetrophtometry instrument, expands scope and the precision of detection.
Background technology
Atomic Absorption Spectrometer is a kind of extremely important analysis method in analytical chemistry field, is widely used in metallurgical industry.Atomic absorption spectrography (AAS) is the method that the degree of absorption of the ground state atom characteristic radiation line utilizing tested element carries out quantitative analysis.Both can carry out some major constituents mensuration, and can carry out again ppm, ppb level determination of trace, Atomic Absorption Spectrometer can measure multiple element, and wherein flame atomic absorption spectrometry can measure 10-9The g/mL order of magnitude, graphite oven atomic absorption can measure 10-13The g/mL order of magnitude.
Atomic Absorption Spectrometer is made up of light source, atomizer, beam splitting system and detecting system, the operation principle of Atomic Absorption Spectrometer is that sample is converted into steam in atomizer, owing to temperature is relatively low, most of atoms are in ground state, when the Dan Shu gone out from hollow cathode lamp radiation emission is by sample steam, owing to radiation frequency is corresponding to the frequency of the energy required for highly excited level by ground state transition with the electronics in atom, a part of light by Atomic Absorption, i.e. resonance absorption.The unabsorbed light of another part is analysis signal, is received by photodetector system.The degree weakened because of absorption due to sharp Line beam is directly proportional to the concentration of analytical element in atomic vapour, so by measurement result compared with standard, so that it may obtain the constituent content in sample.
Graphite furnace atomizer is one of topmost device of atomic absorption analyzer device, and analyst coverage almost covers all of metallic element, and sensitivity is the highest, is widely used in the trace detection of element.Its temperature controlled precision and speed are the most important determiners of atomization efficiency and measurement index, and the accuracy of temperature detection and speed are temperature controlled preconditions.But existing graphite furnace body dimension is the least, needing again to carry out atmosphere of inert gases protection, the size of Gu Wenduguanchakou is the least, the diameter of the most several millimeters.This optical resolution being accomplished by temperature measuring equipment is the highest.Graphite furnace can not be suitable in the non-constant width of range of temperature of work process, ordinary temperature detection, and general touch sensor is measured scope and is less than 1000 degree, contactless optical temperature measurement scope 1200～3000 degree.So needing the temperature simultaneously taking into account high/low temperature section just cannot monitor, traditional method is that high temperature uses light temperature control, and accuracy can meet requirement, and the mode that low temperature uses power control combination to estimate temperature realizes temperature control, its temperature control accuracy is poor, and impacted factor is a lot.But low-temperature zone is usually the pretreatment stage of Atomic Absorption, the process such as it includes being dried, ashing.And the temperature of this process is inaccurate, or the process effect of making is not thorough, or crosses loss of effect sample, causes overall atomization efficiency low, is substantially reduced the sensitivity of instrument, and serious meeting causes atomization measurement cannot repeat to realize so that detect unsuccessfully.
Utility model content
The purpose of this utility model is aiming at existing atomizer graphite furnace temperature detection and measures narrow limits, the technological deficiency that accuracy of detection is low, the infrared intensity of object radiation and temperature is utilized to have the physical characteristic of certain dependency, in conjunction with existing electronics and optical technology, it is achieved sensor detection of 3000 degree from room temperature to high temperature.Thus in the temperature controlling range of whole graphite furnace, temperature accuracy can be improved, improve atomization efficiency and the measuring accuracy of graphite furnace.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of atomizer graphite furnace temperature-detecting device of this utility model design, it is characterized in that: it includes termination, termination is provided with into light aperture, described termination is contained in the front end in module darkroom, it is positioned in the light path of light aperture equipped with collecting lens in module darkroom, equipped with infra-red heat electric transducer on the emitting light path of collecting lens, infra-red heat electric transducer is positioned at module darkroom, described module darkroom is contained in the base seat groove of mounting seat, the installation end of infra-red heat electric transducer passes base seat groove and is installed on preamplification board, preamplification board is installed in mounting seat, preamplification board connects control lead-in wire.
Further, described mounting seat is contained on fixed triangle support and position is adjustable.
Further, described fixed triangle support is contained on graphite furnace base, enters light aperture and meta anthracite is bored temperature observation mouth.
Further; left graphite-pipe fixed mount and right graphite-pipe fixed mount it is installed with side by side on described graphite furnace base; the left surface of left graphite-pipe fixed mount is equipped with left spectrum channel protective glass; right flank is provided with graphite-pipe injection port; the right flank of right graphite-pipe fixed mount is equipped with right spectrum channel protective glass; the leading flank of left graphite-pipe fixed mount and right graphite-pipe fixed mount is equipped with cooling water input, equipped with stand balance adjustment part on graphite furnace base.
Further, described mounting seat is provided with external screw thread, and mounting seat is contained on fixed triangle support passes through screw-threaded coupling.
Beneficial effect
This utility model utilizes the infrared intensity of object radiation and temperature to have the physical characteristic of certain dependency, in conjunction with existing electronics and optical technology, realize the detection of 3000 degree from room temperature to high temperature of a sensor, thus in the temperature controlling range of whole graphite furnace, temperature accuracy can be improved, improve atomization efficiency and the measuring accuracy of graphite furnace.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of this utility model embodiment.
Accompanying drawing 2 is the mounting structure schematic diagram of this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is described further.
Embodiment
As shown in Figure 1, a kind of atomizer graphite furnace temperature-detecting device, it is characterized in that: it includes termination 1, termination 2 is provided with into light aperture 201, described termination 2 is contained in the front end in module darkroom 3, it is positioned in module darkroom 3 in the light path of light aperture 201 equipped with collecting lens 4, equipped with infra-red heat electric transducer 5 on the emitting light path of collecting lens 4, infra-red heat electric transducer 5 is positioned at module darkroom 3, described module darkroom 3 is contained in the base seat groove 601 of mounting seat 6, the installation end of infra-red heat electric transducer 5 passes base seat groove and is installed on preamplification board 7, preamplification board 7 is screwed and is contained in mounting seat 6, preamplification board 7 connects control lead-in wire 8.
Described mounting seat 6 is contained on fixed triangle support 9 and position is adjustable.
As shown in Figure 2, described fixed triangle support 9 screwed lock is contained on graphite furnace base 10, enters light aperture 201 and meta anthracite is bored temperature observation mouth.
Left graphite-pipe fixed mount 11 and right graphite-pipe fixed mount 12 it is installed with side by side on described graphite furnace base 10; the left surface of left graphite-pipe fixed mount 11 is equipped with left spectrum channel protective glass 13; right flank is provided with graphite-pipe injection port 14; the right flank of right graphite-pipe fixed mount 12 is equipped with right spectrum channel protective glass 15; the leading flank of left graphite-pipe fixed mount 11 and right graphite-pipe fixed mount 12 is equipped with cooling water input 16, equipped with stand balance adjustment part 1 on graphite furnace base 10.
Described mounting seat 6 is provided with external screw thread, and mounting seat 6 is contained on fixed triangle support 9 passes through screw-threaded coupling.
Work process of the present utility model is, the temperature of graphite-pipe determines ultrared amount of radiation, infrared light is injected after infrared module enters light aperture 201 through graphite cone temperature observation mouth, assemble through collecting lens 4 and inject to infra-red heat electric transducer 5, sensor is converted to the faint signal of telecommunication the infrared light flux sensed, sampling through preamplification board 7 is amplified, and the multiple of amplification is carried out intelligent decision by rear class microcontroller automatically according to the size gathering data, with adaptive light intensity.Thus reach the faint infrared signal of low-temperature zone and can also stable detection arrive, the infrared signal that high temperature section is strong reduces amplification, is unlikely to signal excessive the most saturated.Reach, in the operating temperature range of whole graphite furnace room temperature～3000 degree, can accurately identify.
This utility model utilizes the infrared intensity of object radiation and temperature to have the physical characteristic of certain dependency, in conjunction with existing electronics and optical technology, realize the detection of 3000 degree from room temperature to high temperature of a sensor, thus in the temperature controlling range of whole graphite furnace, temperature accuracy can be improved, improve atomization efficiency and the measuring accuracy of graphite furnace.
Structure depicted in the present embodiment institute accompanying drawings, ratio, size etc., the most only in order to coordinate the content disclosed in description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall in the range of the technology contents disclosed in this utility model obtains and can contain.Simultaneously, in this specification cited as " on ", D score, "left", "right", " middle ", " clockwise ", the term of " counterclockwise " etc., it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
Claims (5)
1. an atomizer graphite furnace temperature-detecting device, it is characterized in that: it includes termination (2), termination (2) is provided with into light aperture (201), described termination (2) is contained in the front end of module darkroom (3), it is positioned in the light path of light aperture (201) in module darkroom (3) equipped with collecting lens (4), equipped with infra-red heat electric transducer (5) on the emitting light path of collecting lens (4), infra-red heat electric transducer (5) is positioned at module darkroom (3), described module darkroom (3) is contained in the base seat groove (601) of mounting seat (6), the installation end of infra-red heat electric transducer (5) passes base seat groove and is installed on preamplification board (7), preamplification board (7) is installed in mounting seat (6), preamplification board (7) connects control lead-in wire (8).
2. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 1, it is characterised in that: described mounting seat (6) is contained in fixed triangle support (9), and above and position is adjustable.
3. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 2, it is characterized in that: described fixed triangle support (9) is contained on graphite furnace base (10), enter light aperture (201) and meta anthracite is bored temperature observation mouth.
4. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 3, it is characterized in that: on described graphite furnace base (10), be installed with left graphite-pipe fixed mount (11) and right graphite-pipe fixed mount (12) side by side, the left surface of left graphite-pipe fixed mount (11) is equipped with left spectrum channel protective glass (13), right flank is provided with graphite-pipe injection port (14), the right flank of right graphite-pipe fixed mount (12) is equipped with right spectrum channel protective glass (15), the leading flank of left graphite-pipe fixed mount (11) and right graphite-pipe fixed mount (12) is equipped with cooling water input (16), equipped with stand balance adjustment part (1) on graphite furnace base (10).
5. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 2, it is characterised in that: described mounting seat (6) is provided with external screw thread, and mounting seat (6) is contained on fixed triangle support (9) passes through screw-threaded coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520978903.7U CN205426346U (en) | 2015-11-30 | 2015-11-30 | Atomizer graphite oven temperature -detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520978903.7U CN205426346U (en) | 2015-11-30 | 2015-11-30 | Atomizer graphite oven temperature -detecting device |
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| CN205426346U true CN205426346U (en) | 2016-08-03 |
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| CN201520978903.7U Active CN205426346U (en) | 2015-11-30 | 2015-11-30 | Atomizer graphite oven temperature -detecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371965A (en) * | 2015-11-30 | 2016-03-02 | 上海仪电分析仪器有限公司 | Temperature measurement device of atomizer graphite furnace |
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- 2015-11-30 CN CN201520978903.7U patent/CN205426346U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371965A (en) * | 2015-11-30 | 2016-03-02 | 上海仪电分析仪器有限公司 | Temperature measurement device of atomizer graphite furnace |
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