CN108982635A - The method of calibration and calibration equipment of Oxygen Measuring Instrument - Google Patents
The method of calibration and calibration equipment of Oxygen Measuring Instrument Download PDFInfo
- Publication number
- CN108982635A CN108982635A CN201811200296.6A CN201811200296A CN108982635A CN 108982635 A CN108982635 A CN 108982635A CN 201811200296 A CN201811200296 A CN 201811200296A CN 108982635 A CN108982635 A CN 108982635A
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- China
- Prior art keywords
- oxygen
- sensor
- zirconium oxide
- measuring instrument
- comparative analysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 84
- 239000001301 oxygen Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 49
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 38
- ISSXKNWTCLRPJY-UHFFFAOYSA-N O.O.[O-2].[Zr+4].[O-2] Chemical compound O.O.[O-2].[Zr+4].[O-2] ISSXKNWTCLRPJY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000010835 comparative analysis Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 15
- GEIAQOFPUVMAGM-UHFFFAOYSA-N Oxozirconium Chemical compound [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 19
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 18
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 8
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 8
- 229910001928 zirconium oxide Inorganic materials 0.000 description 8
- 238000012795 verification Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004164 analytical calibration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of Oxygen Measuring Instruments, more particularly to the method for calibration and calibration equipment of a kind of Oxygen Measuring Instrument.Steps are as follows for the method for calibration of Oxygen Measuring Instrument: the oxygen amount data that the Zirconium oxide oxygen sensor on zirconia probe will test export oxidizing zirconium oxygen content transducer, data after operation are exported oxygen supply comparative analysis instrument by zirconium oxide oxygen content transducer, sampling pipe, sampling pump acquire the gas with Zirconium oxide oxygen sensor same position, gas collected is detected by lambda sensor, lambda sensor will test result output oxygen supply comparative analysis instrument, and oxygen comparative analysis instrument is shown after being analyzed the detection data received.The present invention does not destroy measuring point environment, does not influence production run, same point, the same time, and the detection check compared on the same interface of Oxygen Measuring Instrument is suitble to use under any environment, and detection data is accurate, provides more accurately data for equipment operation.
Description
Technical field
The present invention relates to a kind of Oxygen Measuring Instruments, more particularly to a kind of verification side of Oxygen Measuring Instrument
Method and calibration equipment, it belongs to technology of instrument and meter field.
Background technique
Oxygen Measuring Instrument is made of zirconium oxide transmitter and zirconia probe, it is suitable for boiler exhaust gas etc.
The detection of aspect oxygen content is a kind of easy, reliable measuring device.But existing Oxygen Measuring Instrument is due to quality
Influence with the factors such as environment are measured, will cause the deviation of measured value, cause testing result inaccurate, this is required reliably
Method carries out on-line testing to Oxygen Measuring Instrument, and the reason of error identifying.
Currently, traditional Oxygen Measuring Instrument on-line testing, is all Standard Gases standardization.In ideal conditions
Under, the verification of these methods is possible, but under complicated operating condition, the method, there is following defects: 1, being aoxidized
During zirconium oxygen analyzer works online, the pressure of oxidation zirconium electrode two sides be it is uneven, especially in burning boiler flue gas inspection,
Test environment is often negative pressure, if the sealing of zirconium oxide detecting element is bad, there is leakage;The gas of reference electrode can leak into tested
Measurement error is caused in pole.2 and the detection of traditional Standard Gases check addition, be that Standard Gases are passed through tested pole with conduit, see oxygen
It measures show value and whether Standard Gases given value is consistent.But under working environment, general tested extremely negative pressure is passed through the pressure of Standard Gases
Power compensates for the negative pressure of test environment, balances pressure at both sides, and the gas of reference electrode will not be leaked to tested pole, the value of verification
There will not be error, will result in verify qualification with Standard Gases in this way, and actual measured value has error.3, Oxygen Measuring Instrument
In working online, the ingredient of examined gas be it is complicated, can there is it is some interference oxidation zirconium measurements ingredients, burn
It in the tail gas of boiler, such as burns bad, has the undesirable combustibility gas under normal operating condition such as carbon monoxide, methane
Body;It needs since Oxygen Measuring Instrument has to zirconium oxide heated by electrodes to minimum 650 DEG C of characteristic, it can be in zirconium oxide electricity
Pole measures chamber and generates second-time burning, consumes remaining oxygen amount, keeps measured value relatively low, and even zero.In this case, Standard Gases are used
Check addition can not be detected.4, in addition all can there are also the moisture and reference electrode and the big pressure difference of tested interpolar in gas
Oxygen Measuring Instrument measurement is had an impact.5, the sampling verification of other way does not accomplish not destroy measuring point environment, no
Influence production run, same point, same time, the detection check compared on the same interface of Oxygen Measuring Instrument.In view of with
The problem of upper is all Standard Gases check addition, and inspection does not measure researches and develops Oxygen Measuring Instrument calibration equipment, runs to equipment
More accurate reliable data are provided, those skilled in the art's technical problem urgently to be solved is become.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of method of calibration of Oxygen Measuring Instrument and verification dresses
It sets, it does not destroy measuring point environment shortly, does not influence production run, same point, the same time, same with Oxygen Measuring Instrument
Compare detection check on interface, be suitble to use under any environment, detection data is accurate, provides for equipment operation and more accurately counts
According to.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions:
A kind of method of calibration of Oxygen Measuring Instrument, its step are as follows: the Zirconium oxide oxygen sensor of zirconia probe will be examined
Data after operation are exported oxygen supply ratio by the oxygen amount data output oxidizing zirconium oxygen content transducer measured, zirconium oxide oxygen content transducer
Compared with analyzer, sampling pipe, sampling pump acquire the gas with Zirconium oxide oxygen sensor same position, and gas collected is passed through peroxide
Sensor is detected, and lambda sensor will test result output oxygen supply comparative analysis instrument, the detection that oxygen comparative analysis instrument will receive
Data are shown after being analyzed.
The gas of above-mentioned sampling pipe, sampling pump acquisition also passes through temperature sensor, flowmeter, firedamp sensor, an oxygen
Change carbon sensor to be detected, testing result is exported after oxygen supply comparative analysis instrument is analyzed and shown.
A kind of calibration equipment of Oxygen Measuring Instrument, structure are as follows: the front end sample tap and zirconium oxide of sampling pipe
The sample tap of probe is in same point, and the front end sample tap of sampling pipe is located at outside the shell of zirconia probe, sampling pipe and sampling
Pump connects, and oxygen sensor, the signal output end of lambda sensor and the signal input part of oxygen comparative analysis instrument are arranged on sampling pipe
It connects, the signal output end of the Zirconium oxide oxygen sensor on zirconia probe and the signal input part of zirconium oxide oxygen content transducer connect
It connects, the signal output end of zirconium oxide oxygen content transducer is connect with the signal input part of oxygen comparative analysis instrument, zirconium oxide oxygen amount pick-up
The signal input part of device and the signal output end of Zirconium oxide oxygen sensor connect.
Temperature sensor, flowmeter, firedamp sensor, carbon monoxide transducer, temperature are additionally provided on above-mentioned sampling pipe
Sensor, flowmeter, firedamp sensor, carbon monoxide transducer signal output end and oxygen comparative analysis instrument signal input part
Connection.
Above-mentioned sampling pipe is connect with radiator.
Above-mentioned oxygen comparative analysis instrument is made of single-chip microcontroller and display.
Above-mentioned single-chip microcontroller uses ATXMEGA32A4U single-chip microcontroller, and display uses 7 inch color touch screens.
The signal input part and Zirconium oxide oxygen sensor, temperature sensor, flowmeter, methane sensing of above-mentioned single-chip microcontroller
The signal output end connection of device, lambda sensor, carbon monoxide transducer.
Above-mentioned temperature sensor uses PT100 temperature transducer;Firedamp sensor is sensed using catalyst fuel gas
Device;Lambda sensor uses fluorescence lambda sensor;Carbon monoxide transducer uses electrochemical carbon monoxide sensor.
Above-mentioned sampling pipe is inserted into the furnace body in tested gasmetry region, and sampling pipe is connect with furnace sealing.
Due to the adoption of the above technical scheme, so that the invention has the advantages that and effect:
When detection check, the not work condition environment of destructive test point;Do not influence production run.Detection check point and zirconia probe are surveyed
Amount point is same point, is not influenced by zirconia probe leakage, keeps detection more representative.It can be to zirconium oxide analysis of oxygen content
The instantaneous value of instrument is compared analysis, and can detecte the influence of CO, fuel gas to oxygen content measurement simultaneously.Do not having to stop
Machine, under conditions of tearing machine open, it can be determined that go out whether zirconia probe has leakage.The verification of combined standard gas, then detected with comparison method
Verification, can provide accurate, reliable oxygen amount data for production run.It is more convenient to the sampling of measuring point, fast.The present invention is shortly not
It destroys measuring point environment, influence production run, same point, same time, compared on the same interface of Oxygen Measuring Instrument
Detection check is suitble to use under any environment, and detection data is accurate, provides more accurately data for equipment operation.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 1, Zirconium oxide oxygen sensor, 2, zirconia probe, 3, sampling pipe, 4, sampling pump, 5, temperature sensor, 6,
Flowmeter, 7, firedamp sensor, 8, lambda sensor, 9, carbon monoxide transducer, 10, radiator, 11, oxygen comparative analysis instrument, 12,
Zirconium oxide oxygen content transducer, 13, tested gasmetry region, 14, furnace body, 15, display, 16, single-chip microcontroller.
Specific embodiment
Below with reference to embodiment, the present invention is described further.Following embodiment is only specific implementation of the invention
Example, but the design concept of the present invention is not limited to this, it is all to be made a non-material change to the present invention using this design, it should all
It belongs to behavior that violates the scope of protection of the present invention.
The method of calibration of Oxygen Measuring Instrument of the present invention is as follows: the Zirconium oxide oxygen sensor 1 of zirconia probe 2 will be examined
Measure oxygen amount data output oxidizing zirconium oxygen content transducer 12, zirconium oxide oxygen content transducer 12 by the data after operation export to
Oxygen comparative analysis instrument 11, sampling pipe 3, sampling pump 4 acquire the gas with 1 same position of Zirconium oxide oxygen sensor, gas collected
Body is detected by lambda sensor 8, and lambda sensor 8 will test result output oxygen supply comparative analysis instrument 11, oxygen comparative analysis instrument
11 the detection data received is analyzed after shown.
The gas that above-mentioned sampling pipe 3, sampling pump 4 acquire also pass through temperature sensor 5, flowmeter 6, firedamp sensor 7,
Carbon monoxide transducer 9 is detected, and testing result is exported after oxygen supply comparative analysis instrument 11 is analyzed and shown.
As shown in Figure 1, the calibration equipment of Oxygen Measuring Instrument of the present invention, specific structure are as follows: before sampling pipe 3
The sample tap of end sample tap and zirconia probe 2 is in same point, and the front end sample tap of sampling pipe 3 is located at zirconia probe 2
Outside shell, sampling pipe 3 is connect with sampling pump 4, on sampling pipe 3 be arranged oxygen sensor 8, the signal output end of lambda sensor 8 with
The signal input part of oxygen comparative analysis instrument 11 connects, the signal output end and oxygen of the Zirconium oxide oxygen sensor 1 on zirconia probe 2
Change the signal input part connection of zirconium oxygen content transducer 12, the signal output end and oxygen comparative analysis instrument of zirconium oxide oxygen content transducer 12
11 signal input part connection, the signal input part of zirconium oxide oxygen content transducer 12 and the signal of Zirconium oxide oxygen sensor 1 export
End connection.
Temperature sensor 5, flowmeter 6, firedamp sensor 7, carbon monoxide transducer 9 are additionally provided on above-mentioned sampling pipe 3,
Temperature sensor 5, flowmeter 6, firedamp sensor 7, carbon monoxide transducer 9 signal output end and oxygen comparative analysis instrument 11
Signal input part connection.
Above-mentioned sampling pipe 3 is also connect with radiator 10.Sampling pipe 3 is inserted into the furnace body 14 in tested gasmetry region 13
Interior, sampling pipe 3 and furnace body 14 are tightly connected.
Above-mentioned oxygen comparative analysis instrument 11 is made of single-chip microcontroller 16 and display 15.The signal input part of single-chip microcontroller 16 with
Zirconium oxide oxygen sensor 1, temperature sensor 5, flowmeter 6, firedamp sensor 7,8 carbon monoxide transducer 9 of lambda sensor letter
The connection of number output end.Temperature sensor 5 uses PT100 temperature transducer;Firedamp sensor 7 is sensed using catalyst fuel gas
Device;The use fluorescence lambda sensor of lambda sensor 8, measurement range, 0-25%;Carbon monoxide transducer 9 is aoxidized using electrochemistry one
Carbon sensor, measurement range, 0-10000PPm.Single-chip microcontroller uses ATXMEGA32A4U single-chip microcontroller, and display uses 7 inches of coloured silks
Color touch screen.
The connection structure of above-mentioned Zirconium oxide oxygen sensor 1, zirconia probe 2 and zirconium oxide oxygen content transducer 12 is existing
Technology, using Chinese patent, Patent No. ZL 2,016 2 1130613.8, entitled Oxygen Measuring Instrument
On-line sampling device.
The sampling of gas sampling point and zirconia probe must be same point, the same time, but will be in zirconia probe
It samples outside shell, is influenced to ensure sample gas not by oxidation zirconium electrode leakage.The sampling pipe centainly sealing stringent with furnace body, no
There can be the leakage of a bit, ensure that measurement check value is unaffected.
Zirconium oxide transmitter will have two-way output valve simultaneously, operate normally all the way for equipment, and another way input oxygen compares point
Analyzer.
Working principle of the present invention is as follows: it is of the invention in the premise for not influencing Oxygen Measuring Instrument and normally measuring
Under, in same observation station, the same time under same environment, the oxygen content of current measuring point is measured with another lambda sensor, and oxygen
Change zirconium probe measurement values and another lambda sensor measured value, compares under same reference axis, to verify zirconium oxide analysis of oxygen content
Instrument measured value, if correct.
Claims (10)
1. the method for calibration of Oxygen Measuring Instrument, it is characterised in that steps are as follows: the zirconium oxide oxygen on zirconia probe (2)
The oxygen amount data that sensor (1) will test export oxidizing zirconium oxygen content transducer (12), and zirconium oxide oxygen content transducer (12) will
Data after operation export oxygen supply comparative analysis instrument (11), and sampling pipe (3), sampling pump (4) acquire and Zirconium oxide oxygen sensor (1)
The gas of same position, gas collected are detected by lambda sensor (8), and lambda sensor (8) will test result output
Oxygen supply comparative analysis instrument (11), oxygen comparative analysis instrument (11) are shown after being analyzed the detection data received.
2. the method for calibration of Oxygen Measuring Instrument according to claim 1, it is characterised in that the sampling pipe
(3), the gas of sampling pump (4) acquisition also passes through temperature sensor (5), flowmeter (6), firedamp sensor (7), carbon monoxide and passes
Sensor (9) is detected, and testing result is exported after oxygen supply comparative analysis instrument (11) is analyzed and shown.
3. the calibration equipment of Oxygen Measuring Instrument, it is characterised in that structure is as follows: the front end sample tap and oxygen of sampling pipe (3)
The sample tap for changing zirconium probe (2) is in same point, and the front end sample tap of sampling pipe (3) is located at outside the shell of zirconia probe (2),
Sampling pipe (3) is connect with sampling pump (4), oxygen sensor (8) is arranged on sampling pipe (3), the signal output end of lambda sensor (8)
It is connect with the signal input part of oxygen comparative analysis instrument (11), the signal of the Zirconium oxide oxygen sensor (1) on zirconia probe (2) is defeated
Outlet is connect with the signal input part of zirconium oxide oxygen content transducer (12), the signal output end of zirconium oxide oxygen content transducer (12) with
The signal input part of oxygen comparative analysis instrument (11) connects, and the signal input part and zirconium oxide oxygen of zirconium oxide oxygen content transducer (12) pass
The signal output end of sensor (1) connects.
4. the calibration equipment of Oxygen Measuring Instrument according to claim 3, it is characterised in that the sampling pipe (3)
On be additionally provided with temperature sensor (5), flowmeter (6), firedamp sensor (7), carbon monoxide transducer (9), temperature sensor
(5), signal output end and the oxygen comparative analysis instrument (11) of flowmeter (6), firedamp sensor (7), carbon monoxide transducer (9)
Signal input part connection.
5. the calibration equipment of Oxygen Measuring Instrument according to claim 3 or 4, it is characterised in that the sampling pipe
(3) it is connect with radiator (10).
6. the calibration equipment of Oxygen Measuring Instrument according to claim 3 or 4, it is characterised in that the oxygen compares
Analyzer (11) is made of single-chip microcontroller (16) and display (15).
7. the calibration equipment of Oxygen Measuring Instrument according to claim 6, it is characterised in that the above-mentioned list
Piece machine (16) uses ATXMEGA32A4U single-chip microcontroller, and display (15) uses 7 inch color touch screens.
8. the calibration equipment of Oxygen Measuring Instrument according to claim 6, it is characterised in that the above-mentioned list
The signal input part and Zirconium oxide oxygen sensor (1), temperature sensor (5), flowmeter (6), firedamp sensor of piece machine (16)
(7), the signal output end connection of lambda sensor (8), carbon monoxide transducer (9).
9. the calibration equipment of Oxygen Measuring Instrument according to claim 8, it is characterised in that the temperature sensing
Device (5) uses PT100 temperature transducer;Firedamp sensor (7) uses catalyst combustible gas sensor;Lambda sensor (8) is adopted
With fluorescence lambda sensor;Carbon monoxide transducer (9) uses electrochemical carbon monoxide sensor.
10. the calibration equipment of Oxygen Measuring Instrument according to claim 3 or 4, it is characterised in that the sampling
It manages (3) to be inserted into the furnace body (14) of tested gasmetry region (13), sampling pipe (3) and furnace body (14) are tightly connected.
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CN201811200296.6A CN108982635B (en) | 2018-10-16 | 2018-10-16 | Verification method and device for zirconia oxygen analyzer |
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CN201811200296.6A CN108982635B (en) | 2018-10-16 | 2018-10-16 | Verification method and device for zirconia oxygen analyzer |
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CN108982635B CN108982635B (en) | 2024-02-13 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111257394A (en) * | 2018-12-31 | 2020-06-09 | 深圳硅基传感科技有限公司 | Test platform for testing consistency of electrochemical parameters |
CN113740490A (en) * | 2021-08-26 | 2021-12-03 | 华能国际电力股份有限公司上海石洞口第一电厂 | Fault detection and verification device and method for flue gas oxygen meter |
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CN111257394A (en) * | 2018-12-31 | 2020-06-09 | 深圳硅基传感科技有限公司 | Test platform for testing consistency of electrochemical parameters |
CN111257394B (en) * | 2018-12-31 | 2021-08-31 | 深圳硅基传感科技有限公司 | Test platform for testing consistency of electrochemical parameters |
CN113740490A (en) * | 2021-08-26 | 2021-12-03 | 华能国际电力股份有限公司上海石洞口第一电厂 | Fault detection and verification device and method for flue gas oxygen meter |
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