CN107860692A - Dust concentration caliberating device and scaling method in dust work environment - Google Patents
Dust concentration caliberating device and scaling method in dust work environment Download PDFInfo
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- CN107860692A CN107860692A CN201711056257.9A CN201711056257A CN107860692A CN 107860692 A CN107860692 A CN 107860692A CN 201711056257 A CN201711056257 A CN 201711056257A CN 107860692 A CN107860692 A CN 107860692A
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- 239000000428 dust Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 102
- 238000005070 sampling Methods 0.000 claims abstract description 99
- 238000011017 operating method Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 210000004712 air sac Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
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- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the dust concentration caliberating device in dust work environment and scaling method, the device includes wind-tunnel, sensor of dust concentration and dust sampler, and this method includes following operating procedure：Step 1：Assemble the dust concentration caliberating device in dust work environment；Step 2：Open debugging magnetic valve and idle discharge magnetic valve；Step 3：Debugging；Step 4：Test；Step 5：Compare demarcation.The present invention, the degree of accuracy of sampling improve, and improve the degree of accuracy of demarcation.
Description
Technical field
The present invention relates to the dust concentration caliberating device in dust work environment and scaling method, belong to powder concentration measurement
Technical field.
Background technology
Dust refers to the aerial particulate that suspends, and excessive or very few dust will all produce calamity to environment in air
Influence.In production and living, industrial dust is the natural enemy of human health, be induce a variety of diseases the main reason for one of,
Particularly Mine Dust, the health of worker is on the one hand seriously endangered, causes worker to suffer from pneumoconiosis, another aspect dust concentration
The danger of the too high blast that also lies dormant.It is annual because dust disaster and caused by casualties high number, caused to country
Huge economic loss.To this in order to strictly control dust concentration, it is necessary to be monitored to dust concentration, conventional concentration monitor
Equipment is sensor of dust concentration, the quality and accuracy of sensor of dust concentration, is that effective the maximum of measurement dust concentration is protected
Card.The scaling method of common sensor of dust concentration is to install a mark with sectional position in wind-tunnel and sensor of dust concentration
Accurate dust sampler, dust sampler measure the dust concentration in wind-tunnel, the survey with sensor of dust concentration by weight method
Value is compared, and determines the demarcation accuracy of sensor of dust concentration.But existing dust sampler can not ensure wind-tunnel
Flow velocity it is identical with sampling flow velocity, therefore cause the flowmeter of dust sampler can not accurately show dust flow, cause dust
Concentration sensor can not accurate calibration.
The content of the invention
In order to solve above-mentioned problem, the invention discloses the dust concentration in a kind of dust work environment to demarcate dress
Put and scaling method, its concrete technical scheme are as follows：
Dust concentration caliberating device in dust work environment, the caliberating device are used to demarcate in dust work environment gas sample
Dust concentration, including wind-tunnel, sensor of dust concentration and dust sampler,
The sensor of dust concentration and dust sampler with wind-tunnel through connection, sensor of dust concentration and dust sampler
The level height of placement is consistent, and sensor of dust concentration connects wind-tunnel by testing tube, and the dust sampler passes through sampling pipe
Wind-tunnel is connected, the testing tube is consistent with sampling length of tube, and the sustained height of the same radial section positioned at wind-tunnel,
The testing tube is provided with test magnetic valve, and the testing tube tested between magnetic valve and wind-tunnel offers test branch pipe,
Test branch pipe penetrates with testing tube, and the test branch pipe is provided with debugging magnetic valve, the test branch pipe and testing tube
Shape of cross section it is consistent with aperture, it is described test magnetic valve and debugging electromagnetic valve linking control, when testing closed electromagnetic valve,
Debug magnetic valve to open, when testing magnetic valve opening, debug closed electromagnetic valve, and test magnetic valve and debugging magnetic valve synchronization
Action；
The sampling pipe is provided with sampling magnetic valve, and sampling branch pipe is offered between the sampling magnetic valve and wind-tunnel, described
Sampling branch pipe penetrates with sampling pipe, and the sampling branch pipe is provided with idle discharge magnetic valve, sampling pipe and the sampling branch pipe
Shape of cross section it is consistent with aperture, it is described sampling magnetic valve and idle discharge electromagnetic valve linking control, when sampling closed electromagnetic valve,
Idle discharge magnetic valve is opened, when sampling magnetic valve opening, idle discharge closed electromagnetic valve, and sample magnetic valve and the synchronization of idle discharge magnetic valve
Action；
Be provided with test pressure differential meter between the wind-tunnel and test pipeline, a high-pressure mouth of test pressure differential meter by airway tube with
Wind-tunnel is connected, and a low pressure port of test pressure differential meter is connected by airway tube and testing tube, no two on test pressure differential meter
Pressure tappings are blocked；
Sampling differential manometer is provided between the wind-tunnel and sampling pipe, a high-pressure mouth for sampling differential manometer passes through airway tube and wind
Hole is connected, and a low pressure port for sampling differential manometer is connected by airway tube and sampling pipe, and no two take on sampling differential manometer
Pressure mouth is blocked；
The dust sampler includes air chamber, air pump and the gas pipeline of connection air chamber and air pump.
The gas pipeline is provided with flowmeter.
The sampling pipe is connected with air chamber, and the air chamber offers two parallel slideways, the both sides of the edge of the slideway
Sealing strip is oppositely arranged, sealing strip is partly overlapped, and slideway is sealed, and the junction of sampling pipe and air chamber is located at two slideways
It is middle.
The control handle through slideway is provided with two slideways, the control handle is located at one end in air chamber
Plane frame is connected with, the plane frame is adjacent to air chamber inwall, and plane frame is fixedly connected with collection air bag, the opening of the collection air bag
Around the surrounding of plane frame, and seal against fixation.
Dust concentration scaling method in dust work environment, the scaling method are used for the standard for demarcating sensor of dust concentration
Exactness, including following operating procedure：
Step 1：Assemble the dust concentration caliberating device in dust work environment：Assemble dust work as claimed in claim 4
Dust concentration caliberating device in environment；
Step 2：Debugging magnetic valve and idle discharge magnetic valve are opened, while tests magnetic valve and samples magnetic valve and be closed；
Step 3：The debugging stage：After being on wind-tunnel, wind-tunnel starts to send out dirt, and differential manometer to be tested is aobvious with sampling differential manometer
Show to be zero, and after hair dirt stabilization, close debugging magnetic valve and idle discharge magnetic valve, now, test magnetic valve and sample magnetic valve
Open, booster air pump；
Step 4：Test phase：When air pump starts state, observation test pressure differential meter and sampling differential manometer, when test pressure differential meter and
When sampling differential manometer shows zero, the data of sensor of dust concentration are read, and record test is held time, and collects time period
It is interior, by the dusty gas of sampling pipe；
Step 5：Compare demarcation：The concentration for the dusty gas that step 4 collects is calculated, the reading with sensor of dust concentration
Compare, demarcate sensor of dust concentration.
The concrete methods of realizing that step 4 collects sampling pipe dusty gas is as follows：
Mobile two control handles simultaneously so that plane frame faces sampling pipe, under the suction force effect of air pump, and wind-tunnel
Airflow function under, by the gas of sampling pipe enter collection air bag in.
The step 4 test is held time is full of required time no more than this environment next part air bag by gas.
The present invention operation principle be：
Sensor of dust concentration can in real time, on the spot, continuous continual monitoring and display dust concentration, still, dust concentration
Before sensor dispatches from the factory and after a certain number of uses, it is necessary to demarcate, its accuracy of measurement is improved.
By gathering the dusty gas in certain time, the concentration and dust concentration for measuring the dusty gas sense the present invention
The read-around ratio of device to sensor of dust concentration compared with demarcating.
The beneficial effects of the invention are as follows：
The present invention, the degree of accuracy of sampling improve, and improve the degree of accuracy of demarcation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention,
Fig. 2 is the structural representation of dust sampler of the present invention,
Fig. 3 is the A direction views of air chamber in Fig. 2,
Reference numerals list：1-wind-tunnel, 2-sampling differential manometer, 3-airway tube, 4-test magnetic valve, 5-dust sampler,
6-idle discharge magnetic valve, 7-sampling branch pipe, 8-sampling pipe, 9-testing tube, 10-debugging magnetic valve, 11-test branch
Pipe, 12-sensor of dust concentration, 13-test magnetic valve, 14-test pressure differential meter, 15-gas pipeline, 16-air pump,
17-collection air bag, 18-air chamber, 19-control handle, 20-plane frame, 21-slideway.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated.It should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.
Fig. 1 is the structural representation of the present invention, and Fig. 2 is the structural representation of dust sampler of the present invention, and Fig. 3 is in Fig. 2
The A direction views of air chamber, reference component names are followed successively by：Wind-tunnel 1, differential manometer 2 is sampled, airway tube 3, tests magnetic valve 4, powder
Dirt sampler 5, idle discharge magnetic valve 6, sampling branch pipe 7, sampling pipe 8, testing tube 9, debugging magnetic valve 10, test branch pipe 11,
Sensor of dust concentration 12, test magnetic valve 13, test pressure differential meter 14, gas pipeline 15, air pump 16, collection air bag 17, air chamber 18,
Control handle 19, plane frame 20, slideway 21.
Visible with reference to accompanying drawing, the dust concentration caliberating device in this dust work environment, the caliberating device is used to demarcate
The dust concentration of dust work environment gas sample, including wind-tunnel, sensor of dust concentration and dust sampler.The present invention, wind
Dirt is sent out in hole, while the gas of same concentrations is measured by sensor of dust concentration and dust sampler, should by experimental determination
The concentration of gas, the test concentrations of sensor of dust concentration are contrasted, both compare data, enter rower to sensor of dust concentration
It is fixed, improve its test accuracy.
The sensor of dust concentration and dust sampler are adopted with wind-tunnel through connection, sensor of dust concentration and dust
The level height that sample device is placed is consistent, and sensor of dust concentration connects wind-tunnel by testing tube, and the dust sampler is by adopting
Sample pipe connects wind-tunnel, and the testing tube is consistent with sampling length of tube, and the sustained height of the same radial section positioned at wind-tunnel.Really
The concentration of sensor of dust concentration and dusty gas that dust sampler receives and various aspects of performance and parameter are protected close to consistent,
It is easy to accurate calibration.
The testing tube is provided with test magnetic valve, and the testing tube tested between magnetic valve and wind-tunnel offers test branch
Pipe, test branch pipe penetrate with testing tube, and the test branch pipe is provided with debugging magnetic valve, the test branch pipe and test
The shape of cross section of pipe is consistent with aperture, the test magnetic valve and debugging electromagnetic valve linking control, when test closed electromagnetic valve
When, debugging magnetic valve is opened, and when testing magnetic valve opening, debugs closed electromagnetic valve, and test magnetic valve and debugging magnetic valve
Synchronization action.
Stable constant pressure environment will be kept in the present apparatus first, the sampling pipe is provided with sampling magnetic valve, the sampling
Sampling branch pipe is offered between magnetic valve and wind-tunnel, the sampling branch pipe is penetrated with sampling pipe, and the sampling branch pipe is set
Be equipped with idle discharge magnetic valve, the sampling pipe is consistent with aperture with the shape of cross section of sampling branch pipe, it is described sampling magnetic valve and
Idle discharge electromagnetic valve linking is controlled, and when sampling closed electromagnetic valve, idle discharge magnetic valve is opened, when sampling magnetic valve opening, idle discharge
Closed electromagnetic valve, and sample magnetic valve and idle discharge magnetic valve synchronization action.
Before official testing, the unstable dusty gas environment of early stage, without sensor of dust concentration and dust
Sampler, avoid the part dusty gas from remaining in sensor of dust concentration and dust sampler, influence dust concentration sensing
The sensitivity of device and dust sampler to stable dust atmosphere, by test branch pipe and sampling branch pipe by the gas of the early stage
Body is discharged, and cuts off the dust atmosphere of stable constant pressure from test branch pipe and sampling by debugging magnetic valve and idle discharge magnetic valve
Branched pipe flows out, and influences the stable gas pressure inside apparatus of the present invention.
Test pressure differential meter is provided between the wind-tunnel and test pipeline, a high-pressure mouth of test pressure differential meter passes through air guide
Pipe is connected with wind-tunnel, and a low pressure port of test pressure differential meter is connected by airway tube and testing tube, no on test pressure differential meter
Two pressure tappings are blocked.
Sampling differential manometer is provided between the wind-tunnel and sampling pipe, a high-pressure mouth for sampling differential manometer passes through airway tube
Connected with wind-tunnel, a low pressure port for sampling differential manometer is connected by airway tube and sampling pipe, is sampled no two on differential manometer
Individual pressure tappings are blocked.
Correct connecting test differential manometer and sampling differential manometer, by differential manometer come monitor wind-tunnel and sensor of dust concentration and
Dust sampler air pressure is consistent, and sample gas reaches unanimity with the dusty gas aspect factor at sensor of dust concentration.
The dust sampler includes air chamber, air pump and the gas pipeline of connection air chamber and air pump.Air chamber is used to buffer
Air-flow, air pump are used to maintain stable flowing gas state, keep the internal environment of voltage stabilizing.
The gas pipeline is provided with flowmeter.Even if flowmeter coordinates the time, for calculating the reality of sample gas
Volume.
The sampling pipe is connected with air chamber, and the air chamber offers two parallel slideways, the both sides of the edge of the slideway
Sealing strip is oppositely arranged, sealing strip is partly overlapped, and slideway is sealed, and the junction of sampling pipe and air chamber is located at two slideways
It is middle.Slideway, which is used to slide to collection air bag, to be used, and does not influence the air pressure in air chamber, will not gas leakage.
The control handle through slideway is provided with two slideways, the control handle is located at one end in air chamber
Plane frame is connected with, the plane frame is adjacent to air chamber inwall, and plane frame is fixedly connected with collection air bag, the opening of the collection air bag
Around the surrounding of plane frame, and seal against fixation.Debugging stage, collection air bag are located at air chamber inwall, when gathering gas, are moved to
At sampling pipe, the gas in sampling pipe is gathered.
Dust concentration scaling method in dust work environment, the scaling method are used for the standard for demarcating sensor of dust concentration
Exactness, including following operating procedure：
Step 1：Assemble the dust concentration caliberating device in dust work environment：Assemble dust work as claimed in claim 4
Dust concentration caliberating device in environment；
Step 2：Debugging magnetic valve and idle discharge magnetic valve are opened, while tests magnetic valve and samples magnetic valve and be closed；
Step 3：The debugging stage：After being on wind-tunnel, wind-tunnel starts to send out dirt, and differential manometer to be tested is aobvious with sampling differential manometer
Show to be zero, and after hair dirt stabilization, close debugging magnetic valve and idle discharge magnetic valve, now, test magnetic valve and sample magnetic valve
Open, booster air pump；
Step 4：Test phase：When air pump starts state, observation test pressure differential meter and sampling differential manometer, when test pressure differential meter and
When sampling differential manometer shows zero, the data of sensor of dust concentration are read, and record test is held time, and collects time period
It is interior, by the dusty gas of sampling pipe；
Step 5：Compare demarcation：The concentration for the dusty gas that step 4 collects is calculated, the reading with sensor of dust concentration
Compare, demarcate sensor of dust concentration.
The concrete methods of realizing that step 4 collects sampling pipe dusty gas is as follows：
Mobile two control handles simultaneously so that plane frame faces sampling pipe, under the suction force effect of air pump, and wind-tunnel
Airflow function under, by the gas of sampling pipe enter collection air bag in.After acquisition time terminates, by collection air bag movement, make collection
The opening of air bag is closely attached to air chamber inwall.Wind-tunnel is closed, after dust precipitation, removes collection air bag manually, during taking really
Collection air sac sealing is protected, inside and outside gas exchange is prevented, influences the intracapsular gas concentration of gas collection and gas volume.
The step 4 test is held time is full of required time no more than this environment next part air bag by gas.When tested
Between be more than collection air bag strut completely the time required to when, sampling pipe need overcome bigger pressure gas could be allowed to enter gas collection
Capsule, certainly will influence both air pressure of sensor of dust concentration and dust sampler, and test result is inaccurate.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, in addition to
Formed technical scheme is combined by above technical characteristic.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (7)
1. the dust concentration caliberating device in dust work environment, the caliberating device is used to demarcate to be taken in dust work environment gas
The dust concentration of sample, it is characterised in that including wind-tunnel, sensor of dust concentration and dust sampler,
The sensor of dust concentration and dust sampler with wind-tunnel through connection, sensor of dust concentration and dust sampler
The level height of placement is consistent, and sensor of dust concentration connects wind-tunnel by testing tube, and the dust sampler passes through sampling pipe
Wind-tunnel is connected, the testing tube is consistent with sampling length of tube, and the sustained height of the same radial section positioned at wind-tunnel,
The testing tube is provided with test magnetic valve, and the testing tube tested between magnetic valve and wind-tunnel offers test branch pipe,
Test branch pipe penetrates with testing tube, and the test branch pipe is provided with debugging magnetic valve, the test branch pipe and testing tube
Shape of cross section it is consistent with aperture, it is described test magnetic valve and debugging electromagnetic valve linking control, when testing closed electromagnetic valve,
Debug magnetic valve to open, when testing magnetic valve opening, debug closed electromagnetic valve, and test magnetic valve and debugging magnetic valve synchronization
Action；
The sampling pipe is provided with sampling magnetic valve, and sampling branch pipe is offered between the sampling magnetic valve and wind-tunnel, described
Sampling branch pipe penetrates with sampling pipe, and the sampling branch pipe is provided with idle discharge magnetic valve, sampling pipe and the sampling branch pipe
Shape of cross section it is consistent with aperture, it is described sampling magnetic valve and idle discharge electromagnetic valve linking control, when sampling closed electromagnetic valve,
Idle discharge magnetic valve is opened, when sampling magnetic valve opening, idle discharge closed electromagnetic valve, and sample magnetic valve and the synchronization of idle discharge magnetic valve
Action；
Be provided with test pressure differential meter between the wind-tunnel and test pipeline, a high-pressure mouth of test pressure differential meter by airway tube with
Wind-tunnel is connected, and a low pressure port of test pressure differential meter is connected by airway tube and testing tube, no two on test pressure differential meter
Pressure tappings are blocked；
Sampling differential manometer is provided between the wind-tunnel and sampling pipe, a high-pressure mouth for sampling differential manometer passes through airway tube and wind
Hole is connected, and a low pressure port for sampling differential manometer is connected by airway tube and sampling pipe, and no two take on sampling differential manometer
Pressure mouth is blocked；
The dust sampler includes air chamber, air pump and the gas pipeline of connection air chamber and air pump.
2. the dust concentration caliberating device in dust work environment according to claim 1, it is characterised in that the gas
Pipe installing has flowmeter.
3. the dust concentration caliberating device in dust work environment according to claim 2, it is characterised in that the sampling
Pipe is connected with air chamber, and the air chamber offers two parallel slideways, and the both sides of the edge of the slideway have been oppositely arranged sealing strip,
Sealing strip is partly overlapped, and slideway is sealed, and the junction of sampling pipe and air chamber is among two slideways.
4. the dust concentration caliberating device in dust work environment according to claim 3, it is characterised in that described in two
The control handle through slideway is provided with slideway, one end that the control handle is located in air chamber is connected with plane frame, institute
State plane frame to be adjacent to air chamber inwall, plane frame is fixedly connected with collection air bag, and the opening of the collection air bag is around the four of plane frame
Week, and seal against fixation.
5. the dust concentration scaling method in dust work environment, the scaling method is used to demarcate the accurate of sensor of dust concentration
Degree, it is characterised in that including following operating procedure：
Step 1：Assemble the dust concentration caliberating device in dust work environment：Assemble dust work as claimed in claim 4
Dust concentration caliberating device in environment；
Step 2：Debugging magnetic valve and idle discharge magnetic valve are opened, while tests magnetic valve and samples magnetic valve and be closed；
Step 3：The debugging stage：After being on wind-tunnel, wind-tunnel starts to send out dirt, and differential manometer to be tested is aobvious with sampling differential manometer
Show to be zero, and after hair dirt stabilization, close debugging magnetic valve and idle discharge magnetic valve, now, test magnetic valve and sample magnetic valve
Open, booster air pump；
Step 4：Test phase：When air pump starts state, observation test pressure differential meter and sampling differential manometer, when test pressure differential meter and
When sampling differential manometer shows zero, the data of sensor of dust concentration are read, and record test is held time, and collects time period
It is interior, by the dusty gas of sampling pipe；
Step 5：Compare demarcation：The concentration for the dusty gas that step 4 collects is calculated, the reading with sensor of dust concentration
Compare, demarcate sensor of dust concentration.
6. the dust concentration scaling method in dust work environment according to claim 5, it is characterised in that the step
The concrete methods of realizing of four collection sampling pipe dusty gas is as follows：
Mobile two control handles simultaneously so that plane frame faces sampling pipe, under the suction force effect of air pump, and wind-tunnel
Airflow function under, by the gas of sampling pipe enter collection air bag in.
7. the dust concentration scaling method in dust work environment according to claim 6, it is characterised in that the step
Four tests are held time is full of required time no more than this environment next part air bag by gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056257.9A CN107860692B (en) | 2017-11-01 | 2017-11-01 | Dust concentration calibration device and calibration method in dust operation environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056257.9A CN107860692B (en) | 2017-11-01 | 2017-11-01 | Dust concentration calibration device and calibration method in dust operation environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107860692A true CN107860692A (en) | 2018-03-30 |
| CN107860692B CN107860692B (en) | 2020-03-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711056257.9A Expired - Fee Related CN107860692B (en) | 2017-11-01 | 2017-11-01 | Dust concentration calibration device and calibration method in dust operation environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900609A (en) * | 2019-03-14 | 2019-06-18 | 北京理工大学 | A kind of wide range dust concentration detector calibration system and scaling method |
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