CN109406614A - Hand-held oxygen detection instrument and its working method - Google Patents
Hand-held oxygen detection instrument and its working method Download PDFInfo
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- CN109406614A CN109406614A CN201811549115.0A CN201811549115A CN109406614A CN 109406614 A CN109406614 A CN 109406614A CN 201811549115 A CN201811549115 A CN 201811549115A CN 109406614 A CN109406614 A CN 109406614A
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- probe
- temperature
- slope
- amplifier
- sample
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- 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
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
Abstract
The invention discloses a kind of hand-held oxygen detection instrument, including host, probe, flow cell；The host is connected with the probe by connecting line；The host includes shell, and the electronic system being arranged in the shell；The probe internally provided temperature sensor；The probe is equipped with pressure sensor and humidity sensor.Hand-held oxygen detection instrument has automatic calibration mode, sample calibration mode and measurement pattern.It is automatic to calibrate using air as standard sample after booting；Also available standards sample carries out sample calibration in use process.Hand-held oxygen detection instrument of the invention, high sensitivity, measurement range is wide, reaction is fast, selectivity is good, sensor life-time is long, can be used for the storage of grain fruits and vegetables, incubator, speedily carries out rescue work, tunnel, underground utilities, civil air defense works, the oxygen contents detection such as naval vessels, it can also be used to the measurement of oxygen concentration in the boiler combustion process gas phase such as power station, smelting, chemical industry.
Description
Technical field
The present invention relates to oxygenation measurement technical fields, and in particular to a kind of hand-held oxygen detection instrument.
Background technique
Oxygen detection instrument is distributed widely in petroleum, chemical industry, combustion gas, coal, metallurgy, electric power, municipal administration, agricultural, food, life
The all trades and professions such as object, medicine, colleges and universities, scientific research, the measurement for oxygen concentration in operating environment and sample.
Oxygen detection instrument has the types such as Electrochemical Detection principle, zirconium oxide testing principle, paramagnetic testing principle.Electrochemistry oxygen
Analyzer measurable range is extended to percentage level from ppm, applied widely, cheap, is suitable for most applications
Occasion, the general 3-5 service life of sensor, needs to regularly replace.Zirconia oxygen analyzer, price are higher than electrochemistry class oxygen
Analyzer, be suitable for flue gas, the measurement of flue oxygen, it can also be used to other occasions, measuring speed is fast, can micrometer amount constant oxygen, but its
High failure rate needs to preheat 700 degree or so, while cannot otherwise can containing big concentration combustible gas such as hydrogen etc. in tested gas
Sensor is damaged, on-line measurement is suitble to, it is bigger than electrochemistry oxygen analyzer weight.Paramagnetic oxygen analyzer sensor is limited without the service life,
It is slightly sensitive to flow, it need to guarantee that admission pressure is stablized, price is also expensive, needs to pre-process and safeguard.
Polarography lambda sensor is constituted, electrode surface by inlaying anode (silver) on the insulating material and cathode (gold or platinum)
It is covered with one layer thin of selective semi-permeable membrane, permission oxygen while electrode and external isolation can be entered.In electrode and film
Between be filled with electrolyte solution.When being applied with polarizing voltage on the electrode of polarography lambda sensor, oxygen can penetrate film in cathode
On react and generate electric current, size of current is directly proportional to oxygen concentration.Polarography lambda sensor high sensitivity, measurement range
Width, reaction is fast, and selectivity is good.
Summary of the invention
The present invention is the technical issues of actual needs solves: aiming at the shortcomings in the prior art, providing a based on polarogram
The hand-held oxygen detection instrument of method, instrumental sensitivity is high, fast response time, good portability, and be switched on automatic calibration, easy to use,
It can be used for the storage of grain fruits and vegetables, incubator, speedily carry out rescue work, tunnel, underground utilities, civil air defense works, the oxygen contents detection such as naval vessels, it is also possible to
The measurement of oxygen concentration in the boiler combustion process gas phase such as power station, smelting, chemical industry.
Technical problem solved by the invention can be realized using following technical scheme:
Hand-held oxygen detection instrument, including host, probe, flow cell；The host and the probe are connected by connecting line
It connects；
The host includes shell, and the electronic system being arranged in the shell；The outer side of shell is equipped with saturating
Bright window and waterproofing membrane switch；The lower end of the shell is equipped with water-proof connector, connects the probe with connecting line；The waterproof
Thin film switch is equipped with operation key；
It is described probe by protective case, interior electrode, permeable membrane, press mold ring, electrolyte, probing shell, water-proof cable fixing head,
The composition such as connecting line；The interior electrode, the components such as anode, insulator and glass tube that cathode, silver including being made of platinum are constituted；
The probing shell is stainless steel；
The flow cell is stainless steel；The flow cell top, side and bottom are respectively equipped with test chamber, sample inlet
And sample export；The sample export and the sample inlet are connect with stainless steel tube；The probe is equipped with external screw thread, described
Flow cell, which is equipped with, to be tightened in the test chamber with the matched internal screw thread of probe, the probe by screw thread；
The electronic system includes the first amplifier, the second amplifier, third amplifier, the 4th amplifier, A/D conversion
Device, controller, memory, display, alarm, first amplifier, the second amplifier, third amplifier, the 4th amplification
Device is connect with the A/D converter, and the controller is connect with the memory, display, alarm, and the controller is also
Operation with waterproofing membrane switch is keyed, and makes respective response to the triggering of the operation key；
Wherein, the probe goes back built-in temperature sensor；The temperature sensor is built in the interior electrode of the probe
In glass tube；The probe is equipped with pressure sensor and humidity sensor；The pressure sensor and the humidity sensor
It is respectively positioned on the front end of the probing shell lateral wall；The oxygen signal of the signal input part and the probe of first amplifier is defeated
Outlet connection, the signal input part of second amplifier are connect with the signal output end of the temperature sensor, the third
The signal input part of amplifier is connect with the signal output end of the pressure sensor, the signal input part of the 4th amplifier
It is connect with the signal output end of the humidity sensor.
The working method of hand-held oxygen detection instrument, includes the following steps:
Probe is screwed in into flow cell first, measures the Standard Gases of certain oxygen concentration at different temperatures, with probe output
Electric current ItDivided by the concentration C of Standard Gases at each temperature, the slope A to pop one's head under different temperatures is calculatedt, obtain probe slope At
With the corresponding relationship A of temperaturet=a*f (t), and be stored in the memory of electronic system, a value is preset as 1；
The hand-held oxygen detection instrument has automatic calibration mode, sample calibration mode and measurement pattern, Three models
The course of work it is as follows:
The hand-held oxygen detection instrument is placed in air after startup self-detection, runs automatic calibration mode, is executed following dynamic
Make:
1) temperature sensor, pressure sensor, humidity sensor measure Current Temperatures t, pressure P respectivelyc, humidity H；Probe
Measure current flow It；By PcIt is stored in the memory of electronic system；
2) according to temperature t, the saturated vapor pressure P that Current Temperatures t is lauched is obtainedw；By formula CP=C0*(1-H*Pw/
Pc) pressure is calculated as Pc, temperature t, oxygen concentration C when humidity is H in airP, C in formula0For the oxygen concentration of dry air, i.e. C0
=20.94%；With the electric current I of probe outputtDivided by CP, calculate the slope A to pop one's head in when calibrating under Current Temperaturest'；By temperature
T, according to be stored in the memory of electronic system pop one's head in slope AtWith the corresponding relationship A of temperaturet=a*f (t), calculates temperature
The slope A to pop one's head in when spending tt, calculate At’/At；
3) a=A is enabledt’/At, obtain new probe slope AtWith the corresponding relationship A of temperaturet=a*f (t), and stored
In the memory of electronic system；
Automatic calibration mode is finished, and hand-held oxygen detection instrument executes following movement automatically into measurement pattern:
I) temperature sensor measurement Current Temperatures t；Pressure sensor measures current pressure P；Probe measurement current flow It；
II) according to the probe slope A stored in the memory of electronic systemtWith the corresponding relationship A of temperaturet=a*f (t),
Calculate the slope A to pop one's head under Current Temperatures tt；
III) by formula Ct=It/At*PcThe oxygen concentration C of/P calculating current samplet, and by CtIt is shown in the value of temperature t
On display；
IV) repeat step I), II), III) movement, until the order of operation key is received, into sample calibration mode
Or other modes；
If the hand-held oxygen detection instrument in measurement pattern receives the order that operation key carries out sample calibration, into
Enter sample calibration mode, execute following movement:
B) probe is screwed in into flow cell, is passed through known oxygen concentration CcSample gas；
B) temperature sensor measurement Current Temperatures t；Pressure sensor measures current pressure Pc；Probe measurement current flow It；
And by PcIt is stored in the memory of electronic system；
C) with the electric current I of probe outputtDivided by Cc, calculate the slope A to pop one's head in when calibrating under Current Temperaturest'；By temperature
T, according to be stored in the memory of electronic system pop one's head in slope AtWith the corresponding relationship A of temperaturet=a*f (t), calculates temperature
The slope A to pop one's head in when spending tt, calculate At’/At；
D) a=A is enabledt’/At, obtain new probe slope AtWith the corresponding relationship A of temperaturet=a*f (t), and stored
In the memory of electronic system；
Sample calibration mode is finished, and hand-held oxygen detection instrument is automatically into measurement pattern.
Compared with prior art, beneficial effects of the present invention are as follows:
1, it is based on electrochemistry polarography, high sensitivity, measurement range is wide, and reaction is fast, and selectivity is good, and sensor life-time is long.
2, probe internally provided temperature sensor, pressure sensor, humidity sensor, using air as standard sample, be switched on automatic school
Standard can save complicated calibration actions, user-friendly.
3, also available standards sample carries out sample calibration in use process, and measurement accuracy is high.
4, instrument good portability, it is easy to use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hand-held oxygen detection instrument of the present invention；
Fig. 2 is the structural block diagram of electronic system of the present invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
As shown in Figure 1, hand-held dissolved oxygen analytic instrument of the invention, including host 10, probe 20 and flow cell 30；It is described
Host 10 is connected with the probe 20 by connecting line；
The host 10 includes shell 11, and the electronic system 12 being arranged in the shell 11；The shell 11
Outside is equipped with transparency window 110 and waterproofing membrane switch 111；The lower end of the shell 11 is equipped with water-proof connector 112, uses connecting line
Connect the probe 20；The waterproofing membrane switch 111 is equipped with operation key 113；
It is described probe 20 by protective case 21, interior electrode 22, permeable membrane 23, press mold ring 24, electrolyte 25, probing shell 26,
The composition such as water-proof cable fixing head 27, connecting line 28.The interior electrode 22, the sun that cathode 221, silver including being made of platinum are constituted
The components such as pole 222, insulator 223 and glass tube 224；
As shown in Fig. 2, the electronic system 12 includes the first amplifier 121, the second amplifier 122, third amplifier
123, the 4th amplifier 124, A/D converter 125, controller 126, memory 127, display 128, alarm 129, described
One amplifier 121, the second amplifier 122, third amplifier 123, the 4th amplifier 124 connect with the A/D converter 125
It connects, the controller 126 is connect with the A/D converter 125, memory 127, display 128, alarm 129, the control
Device 126 is also connect with the operation key 113 of the waterproofing membrane switch 111, makes corresponding sound to the triggering of the operation key 113
It answers；
Wherein, the probe 20 goes back built-in temperature sensor 29；The temperature sensor 29 is built in the probe 20
In the glass tube 224 of interior electrode 22；The probe 20 is equipped with pressure sensor 13 and humidity sensor 14；The pressure sensing
Device 13 and the humidity sensor 14 are respectively positioned on the front end of 26 lateral wall of probing shell；The letter of first amplifier 121
Number input terminal connect with the oxygen signal output end of the probe 20, the signal input part of second amplifier 122 and the temperature
Spend the signal output end connection of sensor 29, the signal input part of the third amplifier 123 and the pressure sensor 13
Signal output end connection, the signal input part of the 4th amplifier 124 and the signal output end of the humidity sensor 14 connect
It connects.
The working method of hand-held oxygen detection instrument, includes the following steps:
Probe 20 is screwed in into flow cell 30 first, measures the Standard Gases of certain oxygen concentration at different temperatures, with probe 20
The electric current I of outputtDivided by the concentration C of Standard Gases at each temperature, the slope A to pop one's head under different temperatures is calculatedt, obtain probe
Slope AtWith the corresponding relationship A of temperaturet=a*f (t), and be stored in the memory 127 of electronic system 12, a value is default
It is 1；
The hand-held oxygen detection instrument has automatic calibration mode, sample calibration mode and measurement pattern, Three models
The course of work it is as follows:
The hand-held oxygen detection instrument is placed in air after startup self-detection, runs automatic calibration mode, is executed following dynamic
Make:
1) temperature sensor 29, pressure sensor 13, humidity sensor 14 measure Current Temperatures t, pressure P respectivelyc, humidity
H；20 measurement current flow I of probet；By PcIt is stored in the memory 127 of electronic system 12；
2) according to temperature t, the saturated vapor pressure P that Current Temperatures t is lauched is obtainedw；By formula CP=C0*(1-H*Pw/
Pc) pressure is calculated as Pc, temperature t, oxygen concentration C when humidity is H in airP, C in formula0For the oxygen concentration of dry air, i.e. C0
=20.94%；The electric current I exported with probe 20tDivided by CP, calculate the slope A to pop one's head in when calibrating under Current Temperaturest'；By temperature
Spend t, according to be stored in the memory 127 of electronic system 12 pop one's head in slope AtWith the corresponding relationship A of temperaturet=a*f (t), meter
The slope A of probe 20 when calculating temperature tt, calculate At’/At；
3) a=A is enabledt’/At, obtain the slope A of new probe 20tWith the corresponding relationship A of temperaturet=a*f (t), and by its
It is stored in the memory 127 of electronic system 12；
Automatic calibration mode is finished, and hand-held oxygen detection instrument executes following movement automatically into measurement pattern:
I) temperature sensor 29 measures Current Temperatures t；Pressure sensor 13 measures current pressure P；20 measurement of probe is current
Electric current It；
II) according to the slope A of the probe 20 stored in the memory 127 of electronic system 12tWith the corresponding relationship A of temperaturet
=a*f (t) calculates the slope A of probe 20 under Current Temperatures tt；
III) by formula Ct=It/At*PcThe oxygen concentration C of/P calculating current samplet, and by CtIt is shown in the value of temperature t
On display 128；
IV) repeat step I), II), III) movement, until the order of operation key 113 is received, into sample calibrating die
Formula or other modes；
If the hand-held oxygen detection instrument in measurement pattern receives the order that operation key 113 carries out sample calibration,
Then enter sample calibration mode, execute following movement:
C) probe 20 is screwed in into flow cell 30, is passed through known oxygen concentration CcSample gas；
B) temperature sensor 29 measures Current Temperatures t；Pressure sensor 13 measures current pressure Pc；20 measurement of probe is current
Electric current It；And by PcIt is stored in the memory 127 of electronic system 12；
C) with the electric current I of 20 output of probetDivided by Cc, calculate the slope A of probe 20 when calibrating under Current Temperaturest'；By
Temperature t, according to be stored in the memory 127 of electronic system 12 pop one's head in slope AtWith the corresponding relationship A of temperaturet=a*f (t),
The slope A of probe 20 when calculating temperature tt, calculate At’/At；
D) a=A is enabledt’/At, obtain new probe slope AtWith the corresponding relationship A of temperaturet=a*f (t), and stored
In the memory 127 of electronic system 12；
Sample calibration mode is finished, and hand-held oxygen detection instrument is automatically into measurement pattern.
Corresponding hand-held oxygen detection instrument is formed according to above-mentioned design scheme, is based on electrochemistry polarography, it is probe internally provided
Temperature sensor, pressure sensor, humidity sensor, using air as standard sample, be switched on automatic calibration, can save complicated calibration
Movement, user-friendly, also available standards sample carries out sample calibration in use process, and measurement accuracy is high.Instrumental sensitivity
Height, measurement range is wide, and reaction is fast, and selectivity is good, and sensor life-time is long, can be used for the storage of grain fruits and vegetables, incubator, speedily carries out rescue work, cheats
The oxygen contents such as road, underground utilities, civil air defense works, naval vessels detection, it can also be used to the boiler combustion process gas such as power station, smelting, chemical industry
The measurement of oxygen concentration in phase.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (2)
1. hand-held oxygen detection instrument, including host, probe, flow cell；The host is connected with the probe by connecting line；
The host includes shell, and the electronic system being arranged in the shell；The outer side of shell is equipped with transparency window
And waterproofing membrane switch；The lower end of the shell is equipped with water-proof connector, connects the probe with connecting line；The waterproofing membrane
Switch is equipped with operation key；
The probe is by protective case, interior electrode, permeable membrane, press mold ring, electrolyte, probing shell, water-proof cable fixing head, connection
The composition such as line；The interior electrode, the components such as anode, insulator and glass tube that cathode, silver including being made of platinum are constituted；It is described
Probing shell is stainless steel；
The flow cell is stainless steel；The flow cell top, side and bottom are respectively equipped with test chamber, sample inlet and sample
Product outlet；The sample export and the sample inlet are connect with stainless steel tube；The probe is equipped with external screw thread, the circulation
Pond, which is equipped with, to be tightened in the test chamber with the matched internal screw thread of probe, the probe by screw thread；
The electronic system include the first amplifier, the second amplifier, third amplifier, the 4th amplifier, A/D converter,
Controller, memory, display, alarm, first amplifier, the second amplifier, third amplifier, the 4th amplifier are equal
Connect with the A/D converter, the controller is connect with the memory, display, alarm, the controller also with institute
The operation key connection for stating waterproofing membrane switch, makes respective response to the triggering of the operation key；
It is characterized by: the probe goes back built-in temperature sensor；The temperature sensor is built in the interior electrode of the probe
Glass tube in；The probe is equipped with pressure sensor and humidity sensor；The pressure sensor and the humidity sensor
Device is respectively positioned on the front end of the probing shell lateral wall；The signal input part of first amplifier and the oxygen signal of the probe
Output end connection, the signal input part of second amplifier connect with the signal output end of the temperature sensor, and described the
The signal input part of three amplifiers is connect with the signal output end of the pressure sensor, the signal input of the 4th amplifier
End is connect with the signal output end of the humidity sensor.
2. the working method of hand-held oxygen detection instrument as described in claim 1, it is characterised in that:
The probe is screwed in into the flow cell first, measures the Standard Gases of certain oxygen concentration at different temperatures, it is defeated with popping one's head in
Electric current I outtDivided by the concentration C of Standard Gases at each temperature, the slope A to pop one's head under different temperatures is calculatedt, it is oblique to obtain probe
Rate AtWith the corresponding relationship A of temperaturet=a*f (t), and be stored in the memory of the electronic system, a value is preset as
1；
The hand-held oxygen detection instrument has automatic calibration mode, sample calibration mode and measurement pattern, the work of Three models
It is as follows to make process:
The hand-held oxygen detection instrument is placed in air after startup self-detection, runs automatic calibration mode, executes following movement:
1) temperature sensor, pressure sensor, humidity sensor measure Current Temperatures t, pressure P respectivelyc, humidity H；It is described
Probe measurement current flow It；By PcIt is stored in the memory of the electronic system；
2) according to temperature t, the saturated vapor pressure P that Current Temperatures t is lauched is obtainedw；By formula CP=C0*(1-H*Pw/Pc) meter
Calculating pressure is Pc, temperature t, oxygen concentration C when humidity is H in airP, C in formula0For the oxygen concentration of dry air, i.e. C0=
20.94%；With the electric current I of the probe outputtDivided by CP, calculate the slope A to pop one's head in when calibrating under Current Temperaturest'；By temperature
T is spent, according to the slope A that pops one's head in the memory for being stored in the electronic systemtWith the corresponding relationship A of temperaturet=a*f (t), meter
The slope A to pop one's head in when calculating temperature tt, calculate At’/At；
3) a=A is enabledt’/At, obtain new probe slope AtWith the corresponding relationship A of temperaturet=a*f (t), and store it in described
In the memory of electronic system；
Automatic calibration mode is finished, and hand-held oxygen detection instrument executes following movement automatically into measurement pattern:
I) the temperature sensor measurement Current Temperatures t；The pressure sensor measures current pressure P；The probe measurement is worked as
Preceding electric current It；
II) according to the probe slope A stored in the memory of the electronic systemtWith the corresponding relationship A of temperaturet=a*f (t),
Calculate the slope A to pop one's head under Current Temperatures tt；
III) by formula Ct=It/At*PcThe oxygen concentration C of/P calculating current samplet, and by CtIt is shown in the value of temperature t described
On display；
IV) repeat step I), II), III) movement, until the order of the operation key is received, into sample calibration mode
Or other modes；
If the hand-held oxygen detection instrument in measurement pattern receives the order that the operation key carries out sample calibration, into
Enter sample calibration mode, execute following movement:
A) probe is screwed in into the flow cell, is passed through known oxygen concentration CcSample gas；
B) the temperature sensor measurement Current Temperatures t；The pressure sensor measures current pressure Pc；The probe measurement is worked as
Preceding electric current It；And by PcIt is stored in the memory of the electronic system；
C) with the electric current I of the probe outputtDivided by Cc, calculate the slope A to pop one's head in when calibrating under Current Temperaturest'；By temperature
T, according to the slope A that pops one's head in the memory for being stored in the electronic systemtWith the corresponding relationship A of temperaturet=a*f (t) is calculated
The slope A to pop one's head in when temperature t outt, calculate At’/At；
D) a=A is enabledt’/At, obtain new probe slope AtWith the corresponding relationship A of temperaturet=a*f (t), and store it in described
In the memory of electronic system；
Sample calibration mode is finished, and the hand-held oxygen detection instrument is automatically into measurement pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549115.0A CN109406614A (en) | 2018-12-18 | 2018-12-18 | Hand-held oxygen detection instrument and its working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549115.0A CN109406614A (en) | 2018-12-18 | 2018-12-18 | Hand-held oxygen detection instrument and its working method |
Publications (1)
| Publication Number | Publication Date |
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| CN109406614A true CN109406614A (en) | 2019-03-01 |
Family
ID=65459927
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811549115.0A Pending CN109406614A (en) | 2018-12-18 | 2018-12-18 | Hand-held oxygen detection instrument and its working method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044597A (en) * | 2019-12-30 | 2020-04-21 | 上海誉琰科技有限公司 | Gas-liquid two-phase oxygen analyzer and working method |
| CN111579619A (en) * | 2020-05-28 | 2020-08-25 | 江苏集萃深度感知技术研究所有限公司 | Oxygen detector, detection method and application |
| CN112147278A (en) * | 2020-08-27 | 2020-12-29 | 河海大学 | Measuring device for oxygen content of multiple horizontal layers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102435646A (en) * | 2011-09-09 | 2012-05-02 | 大连赛恩仪表股份有限公司 | Hand-held trace dissolved oxygen analytic instrument with charging base and flow detection pool |
| CN207248812U (en) * | 2017-07-08 | 2018-04-17 | 广东中健检测技术有限公司 | A kind of portable dissolved oxygen meter |
| CN108680551A (en) * | 2018-07-09 | 2018-10-19 | 山东省科学院海洋仪器仪表研究所 | Optical dissolved oxygen sensor original position self-calibrating device and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435646A (en) * | 2011-09-09 | 2012-05-02 | 大连赛恩仪表股份有限公司 | Hand-held trace dissolved oxygen analytic instrument with charging base and flow detection pool |
| CN207248812U (en) * | 2017-07-08 | 2018-04-17 | 广东中健检测技术有限公司 | A kind of portable dissolved oxygen meter |
| CN108680551A (en) * | 2018-07-09 | 2018-10-19 | 山东省科学院海洋仪器仪表研究所 | Optical dissolved oxygen sensor original position self-calibrating device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044597A (en) * | 2019-12-30 | 2020-04-21 | 上海誉琰科技有限公司 | Gas-liquid two-phase oxygen analyzer and working method |
| CN111579619A (en) * | 2020-05-28 | 2020-08-25 | 江苏集萃深度感知技术研究所有限公司 | Oxygen detector, detection method and application |
| CN111579619B (en) * | 2020-05-28 | 2023-04-07 | 江苏集萃深度感知技术研究所有限公司 | Oxygen detector, detection method and application |
| CN112147278A (en) * | 2020-08-27 | 2020-12-29 | 河海大学 | Measuring device for oxygen content of multiple horizontal layers |
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