CN105371965A - Temperature measurement device of atomizer graphite furnace - Google Patents
Temperature measurement device of atomizer graphite furnace Download PDFInfo
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- CN105371965A CN105371965A CN201510860731.8A CN201510860731A CN105371965A CN 105371965 A CN105371965 A CN 105371965A CN 201510860731 A CN201510860731 A CN 201510860731A CN 105371965 A CN105371965 A CN 105371965A
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- graphite
- temperature
- graphite furnace
- atomizer
- darkroom
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Abstract
The present invention provides a temperature measurement device of an atomizer graphite furnace. The temperature measurement device comprises an end (2) provided with a light entrance small hole (201), and the end (2) is arranged at the front end of a module darkroom (3); a condensing lens (4) is installed on the light path of the light entrance small hole (201) in the module darkroom (3); an infrared thermoelectric sensor (5) is arranged on the emergent light path of the condensing lens (4); the module darkroom (3) is installed in the substrate groove (601) of a soleplate (6); the installation end of the infrared thermoelectric sensor (5) goes through the substrate groove and is fixedly installed on a pre-amplifier board (7); the pre-amplifier board (7) is fixedly installed on the soleplate (6) and is connected with a control lead (8). Through adoption of physical characteristics with a certain correlation between the intensity and the temperature of object infrared radiation, the detection of a sensor from the normal temperature to the high temperature of 3000 DEG C is realized by combining the electronic technology and the optical technology in the prior art, so that the temperature precision may be improved and the atomization efficiency and the measurement accuracy of a graphite furnace may be enhanced in the temperature control range of the whole graphite furnace.
Description
Technical field
The invention belongs to scientific analysis Instrument technology field, specifically just relate to atomic spetrophtometry instrument, especially relate to the atomizer graphite furnace temperature-detecting device of atomic spetrophtometry instrument, expand scope and the precision of detection.
Background technology
Atomic Absorption Spectrometer is a kind of extremely important analytical approach in analytical chemistry field, is widely used in metallurgical industry.Atomic absorption spectrography (AAS) is the method utilizing the degree of absorption of the ground state atom characteristic radiation line of tested element to carry out quantitative test.Both can carry out some major constituents mensuration, can carry out the determination of trace of ppm, ppb level again, 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 detection system, the principle of work of Atomic Absorption Spectrometer is that sample is converted into steam in atomizer, because temperature is lower, most of atom is in ground state, when the Dan Shu gone out from hollow cathode lamp radiation emission is by sample steam, due to radiation frequency and the electronics in atom by ground state transition to corresponding compared with the frequency of the energy required for highly excited level, a part of light by Atomic absorption, i.e. resonance absorption.The unabsorbed light of another part is analytic 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, just can 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 metallic elements, and sensitivity is the highest, is widely used in the trace detection of element.Its temperature controlled precision and speed are the most important determinatives 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 very little, need again to carry out atmosphere of inert gases protection, the size of Gu Wenduguanchakou is very little, usually only has the diameter of several millimeters.This just needs the optical resolution of temperature measuring equipment very high.Graphite furnace is at the non-constant width of the range of temperature of the course of work, and ordinary temperature detects and can not be suitable for, and general touch sensor measurement range is less than 1000 degree, contactless optical temperature measurement scope 1200 ~ 3000 degree.Needing the temperature simultaneously taking into account high/low temperature section just cannot monitor like this, traditional method is that high temperature adopts light temperature control, and accuracy can meet the demands, and low temperature adopts power to control to combine the mode estimating temperature and realizes temperature control, its temperature control accuracy is poor, and influenced factor is a lot.But low-temperature zone is generally the pretreatment stage of Atomic absorption, and it comprises the process such as drying, 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, the sensitivity of lowering apparatus greatly, and serious meeting causes atomization to be measured cannot repeat realization, makes to detect unsuccessfully.
Summary of the invention
Object of the present invention is exactly narrow for existing atomizer graphite furnace temperature detection measurement range, the technological deficiency that accuracy of detection is low, the intensity utilizing object radiation infrared and temperature have the physical characteristics of certain correlativity, in conjunction with existing electronics and optical technology, realize the detection of 3000 degree from normal temperature to high temperature of a sensor.Thus in the temperature controlling range of whole graphite furnace, can temperature accuracy 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 the present invention's design, it is characterized in that: it comprises termination, termination is provided with into light aperture, described termination is contained in the front end in module darkroom, be positioned in module darkroom, in the light path of light aperture, collector lens be housed, infra-red heat electric transducer the emitting light path of collector lens is equipped with, infra-red heat electric transducer is positioned at module darkroom, described module darkroom is contained in the base seat groove of mount pad, the installation end of infra-red heat electric transducer passes base seat groove and is installed on preamplification board, preamplification board is installed on mount pad, preamplification board is connected with and controls lead-in wire.
Further, described mount pad to be contained on fixed triangle support and position is adjustable.
Further, described fixed triangle support is contained on graphite furnace base, enters light aperture to meta anthracite cone temperature observation mouth.
Further; described graphite furnace base is installed with left graphite-pipe fixed mount and right graphite-pipe fixed mount side by side; 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 chilled water input port, graphite furnace base is equipped with stand balance adjustment part.
Further, described mount pad is provided with external thread, and mount pad is contained on fixed triangle support and passes through screw-threaded coupling.
Beneficial effect
The intensity that the present invention utilizes object radiation infrared and temperature have the physical characteristics of certain correlativity, in conjunction with existing electronics and optical technology, realize the detection of 3000 degree from normal temperature to high temperature of a sensor, thus in the temperature controlling range of whole graphite furnace, can temperature accuracy be improved, improve atomization efficiency and the measuring accuracy of graphite furnace.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the embodiment of the present invention.
Accompanying drawing 2 is mounting structure schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment
As shown in Figure 1, a kind of atomizer graphite furnace temperature-detecting device, it is characterized in that: it comprises termination 1, termination 2 is provided with into light aperture 201, described termination 2 is contained in the front end in module darkroom 3, be positioned in module darkroom 3, in the light path of light aperture 201, collector lens 4 be housed, infra-red heat electric transducer 5 emitting light path of collector lens 4 is equipped with, 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 mount pad 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 on mount pad 6, preamplification board 7 is connected with and controls lead-in wire 8.
Described mount pad 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 pairs of meta anthracite cone temperature observation mouths.
Described graphite furnace base 10 is 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 chilled water input port 16, graphite furnace base 10 is equipped with stand balance adjustment part 1.
Described mount pad 6 is provided with external thread, and mount pad 6 is contained on fixed triangle support 9 and passes through screw-threaded coupling.
The course of work of the present invention is, the temperature of graphite-pipe determines ultrared radiant quantity, infrared light is injected after infrared module enters light aperture 201 through graphite cone temperature observation mouth, assemble through collector lens 4 and inject to infra-red heat electric transducer 5, sensor is converted to faint electric signal the infrared light flux sensed, sampling through preamplification board 7 is amplified, and the multiple of amplification carries out intelligent decision, with adaptive light intensity according to the size of image data automatically by rear class microcontroller.Thus reach the faint infrared signal of low-temperature zone and also can stable detection arrive, the infrared signal that high temperature section is strong reduces enlargement factor, is unlikely to signal excessive even saturated.Reach in the operating temperature range of whole graphite furnace normal temperature ~ 3000 degree, can accurately identify.
The intensity that the present invention utilizes object radiation infrared and temperature have the physical characteristics of certain correlativity, in conjunction with existing electronics and optical technology, realize the detection of 3000 degree from normal temperature to high temperature of a sensor, thus in the temperature controlling range of whole graphite furnace, can temperature accuracy be improved, improve atomization efficiency and the measuring accuracy of graphite furnace.
Structure, ratio, size etc. that the present embodiment institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre ", " clockwise ", " counterclockwise " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Claims (5)
1. an atomizer graphite furnace temperature-detecting device, it is characterized in that: it comprises termination (2), termination (2) is provided with into light aperture (201), described termination (2) is contained in the front end of module darkroom (3), be positioned in module darkroom (3), in the light path of light aperture (201), collector lens (4) be housed, infra-red heat electric transducer (5) emitting light path of collector lens (4) is equipped with, 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 mount pad (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 on mount pad (6), preamplification board (7) is connected with and controls lead-in wire (8).
2. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 1, is characterized in that: described mount pad (6) is contained in that fixed triangle support (9) is upper and position is adjustable.
3. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 1, it is characterized in that: described fixed triangle support (9) is contained on graphite furnace base (10), enter light aperture (201) to meta anthracite cone temperature observation mouth.
4. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 3, it is characterized in that: described graphite furnace base (10) is 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 chilled water input port (16), stand balance adjustment part (1) graphite furnace base (10) is equipped with.
5. a kind of atomizer graphite furnace temperature-detecting device as claimed in claim 2, is characterized in that: described mount pad (6) is provided with external thread, and mount pad (6) is contained on fixed triangle support (9) and passes through screw-threaded coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860731.8A CN105371965A (en) | 2015-11-30 | 2015-11-30 | Temperature measurement device of atomizer graphite furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860731.8A CN105371965A (en) | 2015-11-30 | 2015-11-30 | Temperature measurement device of atomizer graphite furnace |
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| Publication Number | Publication Date |
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| CN105371965A true CN105371965A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510860731.8A Pending CN105371965A (en) | 2015-11-30 | 2015-11-30 | Temperature measurement device of atomizer graphite furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894397A (en) * | 2017-12-18 | 2018-04-10 | 上海仪电分析仪器有限公司 | Self-adapting type graphite furnace self-locking device |
| CN110333433A (en) * | 2019-07-11 | 2019-10-15 | 广东金鉴实验室科技有限公司 | A kind of micro- heat distribution tester and test method |
| CN111354554A (en) * | 2018-12-20 | 2020-06-30 | 株式会社岛津制作所 | Graphite furnace and transformer used in graphite furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4120200A (en) * | 1976-06-18 | 1978-10-17 | Bodenseewerk Perkin-Elmer & Co., Gmbh | Method and device for pyrometric temperature measurements |
| US4204770A (en) * | 1977-04-26 | 1980-05-27 | Bodenseewerk Perkin-Elmer & Co., Gmbh | Graphite furnace bore temperature measurements in flameless atomic absorption spectroscopy |
| US4283934A (en) * | 1979-01-29 | 1981-08-18 | Bodenseewerk Perkin-Elmer | Pyrometric temperature measurements in flameless atomic absorption spectroscopy |
| CN2708302Y (en) * | 2004-02-12 | 2005-07-06 | 北京天方辰星科技有限公司 | Double-lamp and double-atomizer integrated atomic absorption spectrometer |
| CN101655392A (en) * | 2008-08-19 | 2010-02-24 | 上海华阳检测仪器有限公司 | Combined probe for reading electronic tag and measuring temperature of automatic meter reading instrument |
| CN202626349U (en) * | 2012-07-02 | 2012-12-26 | 英利能源（中国）有限公司 | Single crystal furnace pyrometer installation structure and single crystal furnace comprising same |
| CN205426346U (en) * | 2015-11-30 | 2016-08-03 | 上海仪电分析仪器有限公司 | Atomizer graphite oven temperature -detecting device |
-
2015
- 2015-11-30 CN CN201510860731.8A patent/CN105371965A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4120200A (en) * | 1976-06-18 | 1978-10-17 | Bodenseewerk Perkin-Elmer & Co., Gmbh | Method and device for pyrometric temperature measurements |
| US4204770A (en) * | 1977-04-26 | 1980-05-27 | Bodenseewerk Perkin-Elmer & Co., Gmbh | Graphite furnace bore temperature measurements in flameless atomic absorption spectroscopy |
| US4283934A (en) * | 1979-01-29 | 1981-08-18 | Bodenseewerk Perkin-Elmer | Pyrometric temperature measurements in flameless atomic absorption spectroscopy |
| CN2708302Y (en) * | 2004-02-12 | 2005-07-06 | 北京天方辰星科技有限公司 | Double-lamp and double-atomizer integrated atomic absorption spectrometer |
| CN101655392A (en) * | 2008-08-19 | 2010-02-24 | 上海华阳检测仪器有限公司 | Combined probe for reading electronic tag and measuring temperature of automatic meter reading instrument |
| CN202626349U (en) * | 2012-07-02 | 2012-12-26 | 英利能源（中国）有限公司 | Single crystal furnace pyrometer installation structure and single crystal furnace comprising same |
| CN205426346U (en) * | 2015-11-30 | 2016-08-03 | 上海仪电分析仪器有限公司 | Atomizer graphite oven temperature -detecting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894397A (en) * | 2017-12-18 | 2018-04-10 | 上海仪电分析仪器有限公司 | Self-adapting type graphite furnace self-locking device |
| CN111354554A (en) * | 2018-12-20 | 2020-06-30 | 株式会社岛津制作所 | Graphite furnace and transformer used in graphite furnace |
| CN111354554B (en) * | 2018-12-20 | 2023-12-22 | 株式会社岛津制作所 | Graphite furnace and transformer used in graphite furnace |
| CN110333433A (en) * | 2019-07-11 | 2019-10-15 | 广东金鉴实验室科技有限公司 | A kind of micro- heat distribution tester and test method |
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Application publication date: 20160302 |
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