CN110095393A - Particulate matter measurement method and device with wetting balance - Google Patents
Particulate matter measurement method and device with wetting balance Download PDFInfo
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- CN110095393A CN110095393A CN201910382815.3A CN201910382815A CN110095393A CN 110095393 A CN110095393 A CN 110095393A CN 201910382815 A CN201910382815 A CN 201910382815A CN 110095393 A CN110095393 A CN 110095393A
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- particulate matter
- wetting balance
- carrier
- enriched
- gas
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- 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
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
Abstract
The particulate matter measurement method with wetting balance that the invention discloses a kind of, includes the following steps: first wetting balance step, and the particulate matter enrichment carrier for allowing current sample period to use is placed in first wetting balance point, carries out first wetting balance processing；Particulate matter enrichment carrier Jing Guo first wetting balance step is moved into sampled point, and the particulate matter in sampling gas circuit is allowed to be enriched on particulate matter enrichment carrier by particulate matter enriching step；Increment measurement step, detection are enriched in the mass incremental on particulate matter enrichment carrier in current sample period；Clean dried gas is carried out wetting balance again to the particulate matter enrichment carrier that current sample period uses and handled by wetting balance step again；Amendment step is measured, the mass incremental of carrier is enriched with by the particulate matter in detection current sample period, and correct measurement result.The present invention can overcome since particulate matter enrichment vector background variation leads to measured deviation.
Description
Technical field
The present invention relates to particulate matter field of measuring technique more particularly to one kind to overcome since particulate matter enrichment vector background becomes
Change the particulate matter measurement method and device with wetting balance for leading to measured deviation.
Background technique
In the particulate measurement system based on β radiation absorption principle, there are larger to measurement for the moisture in sample gas
Influence, be mainly shown as in sampling process due to the variation of sample gas humidity and temperature cause particulate matter enrichment carrier hair
The absorption or precipitation of unboiled water point, lead to the variation of vector background.It is main at present to pass through dynamic with DHS (dynamic heat) system
Computer heating control controls sample gas relative humidity in a lower stationary value, and reducing the variation of sample gas humidity with this causes
Vector background variation to reducing influence of the humidity to measurement result.But in actual use, when humidity is higher,
DHS system can not will adopt rising to the peak of permission even if by heating temperature in the section beyond its steady operation
Sample gas humidity is controlled in specified rh value.The effect of its stable carrier background will be weakened, and lead to measurement data
And there are biggish deviations for true value.Therefore a set of wetting balance system is introduced, and proposed a kind of for overcoming due to vector background
Variation leads to the detection method of measured deviation, and the enrichment carrier sheet of the particulate matter due to caused by sample gas can be effectively reduced in this method
Measured deviation caused by bottom changes.
In conventional measurement systems: Fig. 1 be it is traditional based on Beta-ray particulate measurement system, mainly by sampling system,
DHS system, detection device composition, chief component include: sampling head 1, beta ray source 5, the particulate matter enrichment (filter of carrier 6
Paper), detection device 7, sampling pump, DHS system 10, it is as follows that system starts conventional measurement systems workflow when sampled measurements:
Sampling pump 9 starts while starting DHS system 10, and sample gas flows through DHS system 10 by sampling head 1, in DHS system
Air-flow is enriched with carrier 6 (filter paper) by particulate matter by particulate matter enrichment carrier 6 (filter paper) after system 10 heats it
Filtration, particulate matter is enriched on carrier, and sample gas by particulate matter enrichment carrier (filter paper) by by sampling pump 9
Outflow system.Detection device 7 is simultaneously monitored particle concentrations amount of substance increment in particulate matter enrichment process simultaneously.
Therefore a set of wetting balance system is introduced, and proposed a kind of for overcoming due to particulate matter enrichment vector background variation
The detection method and system for leading to measured deviation can be effectively reduced the enrichment vector background of the particulate matter due to caused by sample gas and become
Measured deviation caused by change.
Summary of the invention
Overcome the object of the present invention is to provide a kind of since particulate matter enrichment vector background variation leads to the band of measured deviation
The particulate matter measurement method and device of wetting balance.
To achieve the goals above, technical solution provided by the invention are as follows: a kind of particulate matter survey with wetting balance is provided
Amount method allows the particulate matter enrichment carrier by wetting balance processing to be enriched with and measure particulate matter, includes the following steps:
First wetting balance step, sets up first wetting balance point, and the particulate matter enrichment for allowing current sample period to use carries
Body is placed in first wetting balance point, carries out first wetting balance processing；
Particulate matter enrichment carrier Jing Guo first wetting balance step is moved into sampled point, and allowed by particulate matter enriching step
Particulate matter in sampling gas circuit is enriched on particulate matter enrichment carrier；
Increment measurement step, detection are enriched in the mass incremental on particulate matter enrichment carrier in current sample period；
Wetting balance step again carries out at wetting balance again the particulate matter enrichment carrier that current sample period uses
Reason；
Amendment step is measured, the mass incremental of carrier is enriched with by the particulate matter in detection current sample period, and correct
Measurement result.
In first wetting balance step, it is first wet that carrier progress is enriched with to the particulate matter by the gas in sampling gas circuit
Balance Treatment is spent, before sampling gas circuit enters first wetting balance step, further includes: pass through the gas for sampling air-channel system
After sampling head, DHS system, using preceding gas path switching device by gas pass through gas-filtering device, allow sampling gas circuit in gas
Body forms clean dried gas.
In the first wetting balance step, first wetting balance point, the particulate matter for allowing current sample period to use are set up
Enrichment carrier is placed in first wetting balance point, first passes through clean dried gas that the gas in sampling gas circuit is formed in advance to currently adopting
The particulate matter enrichment carrier that the sample period uses carries out first wetting balance processing.
The first wetting balance step is realized by rear gas path switching device, will be adopted by rear gas path switching device
The sampling gas circuit that sampling point comes out switches at first wetting balance point, and sampling gas circuit is allowed to enter the particle that current sample period uses
Object is enriched with carrier, into first wetting balance step.
To achieve the goals above, the present invention also provides technical solution are as follows: a kind of particulate matter with wetting balance is provided
Measuring device allows the particulate matter enrichment carrier by wetting balance processing to be enriched with and measure particulate matter, comprising:
First wetting balance mechanism, comprising: first wetting balance point, the particulate matter for allowing current sample period to use are rich
Collection carrier is placed in first wetting balance point, carries out first wetting balance processing；
Particulate matter is enriched with mechanism, and the particulate matter for that will pass through first wetting balance step is enriched with carrier and moves into sampled point,
And the particulate matter in sampling gas circuit is allowed to be enriched on particulate matter enrichment carrier；
Increment measurement mechanism increases for detecting the quality being enriched on particulate matter enrichment carrier in current sample period
Amount；
Wetting balance processing mechanism again, the particulate matter enrichment carrier for using current sample period carry out wet again
Spend Balance Treatment；
Correction mechanism is measured, for being enriched with the mass incremental of carrier by the particulate matter in detection current sample period, and
Correct measurement result.
It is to be enriched with carrier to the particulate matter by the gas in sampling gas circuit to carry out for the first time in first wetting balance mechanism
Wetting balance processing, before sampling gas circuit enters first wetting balance step, further includes: pass through the gas for sampling air-channel system
After over-sampling head, DHS system, passes through gas-filtering device by gas using preceding gas path switching device, allow and sample in gas circuit
Gas forms clean dried gas.
In the first wetting balance mechanism, including first wetting balance point, the particulate matter for allowing current sample period to use
Enrichment carrier is placed in first wetting balance point, first passes through clean dried gas that the gas in sampling gas circuit is formed in advance to currently adopting
The particulate matter enrichment carrier that the sample period uses carries out first wetting balance processing.
The first wetting balance mechanism is realized by rear gas path switching device, will be adopted by rear gas path switching device
The sampling gas circuit that sampling point comes out switches at first wetting balance point, and sampling gas circuit is allowed to enter the particle that current sample period uses
Object is enriched with carrier, into first wetting balance step.
Compared with prior art, due in particulate matter measurement method and device of the present invention with wetting balance, by particle
Object enriching step and increment measurement step are refined as wetting balance step, particulate matter enriching step, increment measurement step, wet again
Spend equilibrium step and measurement amendment step.The present invention effectively controls sampling just by wetting balance and again wetting balance step
Particulate matter enrichment carrier variation after the completion of beginning state and again wetting balance step.By the way that particulate matter is enriched with carrier variation control
In reduced levels, to solve the problems, such as the uncontrollable of DHS thrashing bring particulate matter enrichment vector background variation, effectively protect
The accuracy of measurement result is demonstrate,proved.
Through the following description and in conjunction with the attached drawings, the present invention will become more fully apparent, these attached drawings are used to explain the present invention
Embodiment.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the particulate matter measuring apparatus of the prior art.
Fig. 2 show the flow diagram of the particulate matter measurement method of the invention with wetting balance.
Fig. 3 show the system block diagram of the particulate matter measuring apparatus of the invention with wetting balance.
Fig. 4 show the configuration diagram of one embodiment of the particulate matter measuring apparatus of the invention with wetting balance.
Fig. 5 show the flow diagram of one embodiment of the particulate matter measurement method with wetting balance.
Specific embodiment
The embodiment of the present invention described referring now to the drawings, similar element numbers represent similar element in attached drawing.Such as
Upper described, with reference to Fig. 2 and Fig. 4, the present invention provides a kind of particulate matter measurement method with wetting balance, allows by wetting balance
The particulate matter enrichment carrier of reason is enriched with and is measured to particulate matter, is included the following steps:
First wetting balance step 100 sets up first wetting balance point 11, and first wetting balance point 11 is located at sampling gas
Sampling gas circuit is obtained clean dried gas, and to positioned at first wetting balance after completing a upper sampling period by Lu Zhong
The particulate matter enrichment carrier that current sample period at point 11 uses carries out first wetting balance processing, and sampling head 1 is in atmosphere
Particulate matter screened, humidity is controlled by DHS system 10, DHS system 10 by dynamic heat control will sampling
Gas phase, in a lower stationary value, reduces particulate matter enrichment caused by sample gas humidity changes with this and carries to humid control
Body changes to reduce influence of the humidity to measurement result, but in actual use, when humidity is higher, DHS system 10
Can be in the section beyond its steady operation, it can not be wet by sample gas the peak of permission is risen to even if by heating temperature
Degree control is in specified rh value.Its stable particle object enrichment carrier effect will be weakened, cause measurement data with
There are biggish deviations for true value；In the present embodiment, first wetting balance step 100 is achieved in that as shown in figure 4, will
The gas of air-channel system is sampled after sampling head 1, DHS system 10, using preceding gas path switching device 2, is switched in preceding gas circuit
Under the control of device 2, allow gas by gas-filtering device 3, gas-filtering device 3 is used for the particulate matter and aqueous vapor in gas
Absorbed, by gas particulate matter and aqueous vapor be filled into low concentration to get to clean dried gas, done by cleaning
Pathogenic dryness body to be enriched with particulate matter carrier progress wetting balance；At this point, gas circuit is switched to first humidity by rear gas path switching device 7
Particulate matter at equalization point 11 is enriched with carrier, i.e., by clean dried gas to the particulate matter being located at first wetting balance point 11
It is enriched with carrier and carries out first wetting balance processing, it should be noted that the gas in gas circuit will be sampled and pass through cutting head 1, DHS system
Gas after system 10 and gas-filtering device 3 is defined as clean dried gas.
Particulate matter enrichment carrier Jing Guo first wetting balance step 100 is moved into sampled point by particulate matter enriching step 200
12, and the particulate matter in sampling gas circuit is allowed to be enriched on particulate matter enrichment carrier；Specifically, first wetting balance step is completed
Afterwards, stop sampling pump 9 to work, particulate matter is enriched with carrier and moves into sampled point 12 from first wetting balance point 11, is then restarted
Sampling pump 9 works, and sampling gas circuit comes out after DHS system 10 from sampling head 1, under the control of preceding gas path switching device 2, directly
Discharge samples air-channel system after connecing the particulate matter enrichment carrier entered through at sampled point 12, wherein the particulate matter enrichment in gas
On particulate matter enrichment carrier；
Increment measurement step 300 detects the mass incremental being enriched on particulate matter carrier in current sample period, passes through
Detection device 8 detects the mass incremental being enriched on particulate matter carrier；
Clean dried gas is enriched with the completion particulate matter that current sample period uses by wetting balance step 400 again
Particulate matter enrichment carrier carry out again wetting balance handle；Sampling gas circuit is obtained clean dried gas to pass through at sampled point 12
Particulate matter carrier carry out again wetting balance handle, complete increment measurement step after, gas pass through sampling head 1, DHS system
10, under the control of preceding gas path switching device 2, gas obtains clean dried gas, gas filtration dress by gas-filtering device 3
Set 3 for in gas particulate matter and aqueous vapor absorb, by gas particulate matter and aqueous vapor be filled into low concentration, i.e.,
Clean dried gas is obtained, clean dried gas carries out at wetting balance again the particulate matter enrichment carrier at sampled point 12
Reason；
It should be noted that under the control of preceding gas path switching device 2, gas passes through in wetting balance step again
Gas-filtering device 3 obtains clean dried gas, and it is flat to carry out humidity again using the particulate matter enrichment carrier on sampled point 12
Weighing apparatus processing, then under the control of rear gas path switching device 7, gas circuit enters first wetting balance point 11, it is flat to first humidity is located at
The particulate matter enrichment carrier that the lower period at weighing apparatus point 11 uses carries out first wetting balance processing, and in other words, first humidity is flat
Weighing apparatus step and again wetting balance step can be while carrying out.
Amendment step 500 is measured, the mass incremental of carrier is enriched with by the particulate matter in detection current sample period, and repair
Positive measurement result.
With reference to Fig. 3 and Fig. 4, to achieve the goals above, the particulate matter measurement with wetting balance that the present invention also provides a kind of
Device, comprising:
First wetting balance mechanism 20, including first wetting balance point 11, and first wetting balance point 11 is located at sampling gas
Lu Zhong obtains clean dried gas for that will sample gas circuit, and makes to the current sample period being located at first wetting balance point
Particulate matter is enriched with carrier and carries out first wetting balance processing；Sampling head 1 screens the particulate matter in atmosphere, passes through
DHS system 10 controls humidity, and DHS system 10 is controlled by dynamic heat and controls sample gas relative humidity at one
Lower stationary value reduces particulate matter enrichment carrier variation caused by sample gas humidity changes with this to reduce humidity to survey
The influence of result is measured, but in actual use, when humidity is higher, DHS system 10 can be in beyond its steady operation
Section, can not be by sample gas humid control in specified relative humidity the peak of permission is risen to even if by heating temperature
Value.The effect of its stable particle object enrichment carrier will be weakened, and leading to measurement data and true value, there are biggish deviations；At this
In embodiment, first wetting balance mechanism 20 works in this way: as shown in figure 4, by the gas for sampling air-channel system by adopting
After sample head 1, DHS system 10, gas is allowed to pass through under the control of preceding gas path switching device 2 using preceding gas path switching device 2
Gas-filtering device 3, gas-filtering device 3 be used for in gas particulate matter and aqueous vapor absorb, by the particle in gas
Object and aqueous vapor are filled into low concentration to get to clean dried gas, are enriched with and are carried come team's particulate matter by the clean dried gas
Body carries out wetting balance；At this point, gas circuit is switched to the enrichment of the particulate matter at first wetting balance point 11 by rear gas path switching device 7
It is flat to be enriched with the first humidity of carrier progress to the particulate matter being located at first wetting balance point 11 by clean dried gas for carrier
Weighing apparatus.
Particulate matter is enriched with mechanism 30, moves into for that will pass through the particulate matter enrichment carrier that first wetting balance mechanism 20 dehumidifies
Sampled point 12, and the particulate matter in sampling gas circuit is allowed to be enriched on particulate matter enrichment carrier；Specifically, first wetting balance step
After the completion, stop sampling pump 9 to work, particulate matter enrichment carrier is moved into sampled point 12, then restarts the work of sampling pump 9, adopts
Sample gas circuit comes out after DHS system 10 from sampling head 1, under the control of preceding gas path switching device 2, is directly entered and passes through sampling
Discharge sampling air-channel system after particulate matter enrichment carrier at point 12, wherein the particulate matter in gas is enriched in particulate matter enrichment and carries
On body；
Increment measurement mechanism 40 increases for detecting the quality being enriched on particulate matter enrichment carrier in current sample period
Amount detects the mass incremental for being enriched in particulate matter and being enriched on carrier by detection device 8；
Wetting balance processing mechanism 50 again, the particulate matter for using current sample period clean dried gas are rich
Collect carrier and carries out the processing of wetting balance again；Clean dried gas is obtained for gas circuit will to be sampled and passes through the particle at sampled point 12
Object carrier carries out wetting balance again and handles；After completing increment measurement, gas passes through sampling head 1, DHS system 10, in preceding gas circuit
Under the control of switching device 2, gas obtains clean dried gas by gas-filtering device 3, and clean dried gas is to sampled point
Particulate matter enrichment carrier at 12 carries out wetting balance again and handles；
Correction mechanism 60 is measured, for being enriched with the mass incremental of carrier by the particulate matter in detection current sample period,
And correct measurement result.
It should be noted that in embodiments of the present invention, clean dried gas is passed through by the gas in sampling gas circuit
Gas after cutting head 1, DHS system 10 and gas-filtering device 3 is defined as clean dried gas, in actual operation, does
The gas of dry cleaning can be to be stored in a specific gas container in advance, when needing to use clean dried gas, Ke Yicong
Output is that particulate matter enrichment carrier is allowed to carry out particulate matter enrichment to first wetting balance point or sampled point in gas container
It allows clean dried gas to be impacted respectively with after particulate matter enrichment before and realizes wetting balance, clean dried gas can be with
It is made by particular requirement.
Below with reference to Fig. 4,5, the detailed process for the particulate matter measurement method with wetting balance that the present invention will be described in detail:
1, particulate matter-screening is carried out by sampling head；
2, DHS system humidity controls；
3, switching gas circuit is to filtering gas circuit branch, and in this step, gas circuit switching is carried out by preceding gas path switching device 2
Gas circuit is switched to filtering gas circuit branch, is to allow sampling gas circuit by gas-filtering device；
4, sampling gas circuit is by filter device filtration of particulate matters and moisture, is the use of gas-filtering device 3 in this step
In in gas particulate matter and aqueous vapor absorb, by gas particulate matter and aqueous vapor be filled into low concentration to get arriving
Clean dried gas；
5, gas circuit is switched to first wetting balance point, allows clean dried gas by first wetting balance point, and to being located at
The particulate matter enrichment carrier that current sample period at first wetting balance point uses carries out first wetting balance processing；
6, gas circuit is switched to sampling gas circuit, is to switch to realize by preceding gas path switching device in this step；
7, the particulate matter enrichment carrier being located at first wetting balance point is moved on to sampled point entrance by particulate matter enriching step
Current sample period, particulate matter are enriched with carrier and carry out particulate matter enrichment, it should be noted that this step is to complete first humidity
It is carried out under Balance Treatment；
8, switching gas circuit to filtering gas circuit branch；
9, sampling gas circuit samples gas circuit at this time and passes through rear gas path switching device by filter device filtration of particulate matters and moisture
7 are controlled, and sampling gas circuit is allowed to switch to first wetting balance point；
11a, the particulate matter enrichment carrier for completing particulate matter enriching step are still located at sampled point, clean dried gas pair
The particulate matter enrichment carrier of completion particulate matter enriching step at sampled point carries out wetting balance again and handles；
11b, clean dried gas are enriched with carrier by the particulate matter at first wetting balance point and carry out first wetting balance
Processing；
12, measurement amendment.
It should be noted that above step 11a and 11b can be carried out simultaneously.
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (8)
1. a kind of particulate matter measurement method with wetting balance allows and is enriched with carrier to particle by the particulate matter of wetting balance processing
Object is enriched with and is measured, which comprises the steps of:
First wetting balance step, sets up first wetting balance point, and the particulate matter enrichment carrier for allowing current sample period to use is set
In first wetting balance point, first wetting balance processing is carried out；
Particulate matter enrichment carrier Jing Guo first wetting balance step is moved into sampled point, and allows sampling by particulate matter enriching step
Particulate matter in gas circuit is enriched on particulate matter enrichment carrier；
Increment measurement step, detection are enriched in the mass incremental on particulate matter enrichment carrier in current sample period；
Wetting balance step again, to current sample period use completion particulate matter enriching step particulate matter be enriched with carrier into
Wetting balance is handled row again；
Amendment step is measured, the mass incremental of carrier is enriched with by the particulate matter in detection current sample period, and correct measurement
As a result.
2. the particulate matter measurement method with wetting balance as described in claim 1, which is characterized in that first wetting balance step
In, carrier is enriched with to the particulate matter by the gas in sampling gas circuit and carries out first wetting balance processing.
3. the particulate matter measurement method with wetting balance as claimed in claim 2, which is characterized in that the first wetting balance
In step, first wetting balance point is set up, the particulate matter enrichment carrier for allowing current sample period to use is placed in first wetting balance
Point first passes through the clean dried gas that the gas in sampling gas circuit is formed in advance and carries to the particulate matter enrichment that current sample period uses
Body carries out first wetting balance processing.
4. the particulate matter measurement method with wetting balance as claimed in claim 2, which is characterized in that the first wetting balance
Step is realized by rear gas path switching device, the sampling gas for being come out the sampled point by the rear gas path switching device
Road switches at first wetting balance point, allows sampling gas circuit to enter the particulate matter enrichment carrier that current sample period uses, enters
First wetting balance step.
5. a kind of particulate matter measuring apparatus with wetting balance allows and is enriched with carrier to particle by the particulate matter of wetting balance processing
Object is enriched with and is measured characterized by comprising
First wetting balance mechanism, comprising: first wetting balance point, the particulate matter for allowing current sample period to use, which is enriched with, to be carried
Body is placed in first wetting balance point, carries out first wetting balance processing；
Particulate matter is enriched with mechanism, and the particulate matter for that will pass through first wetting balance is enriched with carrier and moves into sampled point, and allows sampling
Particulate matter in gas circuit is enriched on particulate matter enrichment carrier；
Increment measurement mechanism, for detecting the mass incremental being enriched on particulate matter enrichment carrier in current sample period；
Wetting balance processing mechanism again, to current sample period use complete particulate matter enrichment particulate matter be enriched with carrier into
Wetting balance is handled row again；
Correction mechanism is measured, for being enriched with the mass incremental of carrier by the particulate matter in detection current sample period, and is corrected
Measurement result.
6. as claimed in claim 5 with the particulate matter measuring apparatus of wetting balance, which is characterized in that first wetting balance mechanism
In, it is to be enriched with carrier to the particulate matter by the gas in sampling gas circuit to carry out first wetting balance processing.
7. as claimed in claim 6 with the particulate matter measuring apparatus of wetting balance, which is characterized in that the first wetting balance
In mechanism, the particulate matter enrichment carrier for allowing current sample period to use is placed in first wetting balance point, first passes through sampling gas circuit in advance
In the clean dried gas that is formed of gas particulate matter enrichment carrier that current sample period is used carry out first wetting balance
Processing.
8. as claimed in claim 6 with the particulate matter measuring apparatus of wetting balance, which is characterized in that the first wetting balance
Mechanism is realized by rear gas path switching device, is cut the sampling gas circuit that sampled point comes out by the rear gas path switching device
It shifts at first wetting balance point, allows sampling gas circuit to enter the particulate matter enrichment carrier that current sample period uses, carry out first
Wetting balance processing.
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| CN201910382815.3A CN110095393A (en) | 2019-06-20 | 2019-06-20 | Particulate matter measurement method and device with wetting balance |
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| CN201910382815.3A CN110095393A (en) | 2019-06-20 | 2019-06-20 | Particulate matter measurement method and device with wetting balance |
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| CN1108764A (en) * | 1993-09-09 | 1995-09-20 | 日本钢管株式会社 | Apparatus for automatically measuring dust concentration in flue gas |
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| JP2011013157A (en) * | 2009-07-03 | 2011-01-20 | Kimoto Denshi Kogyo Kk | Measuring device of suspended particulate matter, and preservation device of the suspended particulate matter |
| CN104502248A (en) * | 2014-12-31 | 2015-04-08 | 江苏天瑞仪器股份有限公司 | Automatic dual-ray detection method of mass concentration and elementary composition of particulate matter in gaseous fluid |
| CN107271339A (en) * | 2017-06-29 | 2017-10-20 | 苏州浪声科学仪器有限公司 | Fine grained on-line analysis device |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
| CN210742060U (en) * | 2019-06-20 | 2020-06-12 | 深圳国技仪器有限公司 | Particulate matter measuring device with humidity balance function |
-
2019
- 2019-06-20 CN CN201910382815.3A patent/CN110095393A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108764A (en) * | 1993-09-09 | 1995-09-20 | 日本钢管株式会社 | Apparatus for automatically measuring dust concentration in flue gas |
| JP2006003090A (en) * | 2004-06-15 | 2006-01-05 | Dkk Toa Corp | Suspended particulate matter measurement device |
| JP2009031227A (en) * | 2007-07-30 | 2009-02-12 | Kimoto Denshi Kogyo Kk | Device for measuring suspended particular substances |
| JP2011013157A (en) * | 2009-07-03 | 2011-01-20 | Kimoto Denshi Kogyo Kk | Measuring device of suspended particulate matter, and preservation device of the suspended particulate matter |
| CN104502248A (en) * | 2014-12-31 | 2015-04-08 | 江苏天瑞仪器股份有限公司 | Automatic dual-ray detection method of mass concentration and elementary composition of particulate matter in gaseous fluid |
| CN107271339A (en) * | 2017-06-29 | 2017-10-20 | 苏州浪声科学仪器有限公司 | Fine grained on-line analysis device |
| CN108303356A (en) * | 2017-12-29 | 2018-07-20 | 安徽蓝盾光电子股份有限公司 | A kind of atmosphere particulate matter monitoring instrument |
| CN210742060U (en) * | 2019-06-20 | 2020-06-12 | 深圳国技仪器有限公司 | Particulate matter measuring device with humidity balance function |
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