CN107219155A - A kind of device for automatically determining binary channels particulate matter quality concentration - Google Patents
A kind of device for automatically determining binary channels particulate matter quality concentration Download PDFInfo
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- CN107219155A CN107219155A CN201710582157.3A CN201710582157A CN107219155A CN 107219155 A CN107219155 A CN 107219155A CN 201710582157 A CN201710582157 A CN 201710582157A CN 107219155 A CN107219155 A CN 107219155A
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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
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- G01N15/075—
Abstract
The present invention discloses a kind of device for automatically determining binary channels particulate matter quality concentration, and particulate separation sampling module is connected with sample gas humidity control module, and the gas outlet of sample gas humidity control module connects twin-channel sample detecting module；The two-way gas outlet of twin-channel sample detecting module is connected with two-way constant flow regulation module respectively；The gas outlet of two-way constant flow regulation module is connected by triple valve with sampling pump.Apparatus of the present invention can determine the mass concentration of PM10 and PM2.5 particulate matters in atmospheric environment simultaneously, with simple in construction, maintenance cost is low, cycle of operation length, data quick and precisely, really realize on-line automatic continuous monitoring.Apparatus of the present invention, which are truly realized, only needs to a β ray detector and a radiator beta-ray, both the continuous on-line sampling process of binary channels can have been completed, with simple in construction, maintenance cost is low, cycle of operation length, data quick and precisely, instrument cost and later maintenance cost are reduced, on-line automatic continuous monitoring is really realized.
Description
Technical field
The invention belongs to air automatic monitoring equipment technical field, and in particular to one kind automatically determines binary channels particulate matter
Measure the device of concentration.
Background technology
Life and health of the atmospheric environment on people have vital influence, therefore for the particle in atmospheric environment
The monitoring of thing is also particularly important.Atmospheric particulates are dispersed in solid-state or the general name of liquid particles shape material in air.Particle diameter is
0.01 μm~100 μm of Atmospheric particulates, are referred to as overall suspended pellet TSP.And PM10 and PM2.5 refer to aerodynamics respectively
Diameter is less than or equal to 10 μm and 2.5 μm of Atmospheric particulates.PM10 is also referred to as pellet, the World Health Organization
(WHO) what is be then referred to as can enter the particulate matter of chest；PM2.5 can enter human body alveolar, be referred to as lung particulate matter.
PM10 durations in surrounding air are very long, of great impact to health and atmospheric visibility, by people
It after suction, can accumulate in respiratory system, trigger many diseases.PM2.5 is for PM10, it is easier to be suspended in for a long time
In the air, PM10 can enter the nasal cavity and tracheae of people, and PM2.5 is except that can enter lung, moreover it is possible to enter alveolar even blood.Cause
Lung and systemic inflammatorome, increase artery sclerosis, the elevated risk of blood fat cause cardiac arrhythmia, blood pressure rise etc..And PM2.5
Harm be multiple, it can form gray haze, reduce visibility, can also influence ecological environment, and by long-distance sand transport, cause
Regional or global environmental problem, or even influence climate change, PM10 and PM2.5 have become environmental air quality monitoring
Parameter must be surveyed.
The automatic monitoring method of current air particle has：β attenuation sensors, trace oscillating balance method, light scattering method.β
Attenuation sensors are mainly the mass concentration for calculating particulate matter by the loss of the filter paper with particulate matter by measuring ray；
Trace oscillating balance method is that the change by measuring frequency of oscillation calculates a kind of method for being deposited on particulate matter quality on filter membrane；
Light scattering method mainly uses scattering of the particulate matter to light to be directly realized by the measurement of aerosol optical particle diameter, be a kind of noncontact,
Online measuring method.Most of automatic monitors are single channel particle monitoring instrument in the market, can only be realized
The measurement of mono- parameter of PM10 or PM2.5, surveying two parameters needs two instruments, and area occupied is big, and cost is high, and maintenance is big,
In-convenience in use.Although also there is related binary channels particulate matter automatic detection device in the prior art, but this kind of product is in reality
Larger defect is also there is in use, there is following technical problem：(1) due to the cost phase of β ray detectors and radiator beta-ray
To higher, used simultaneously on same machine, necessarily increase the input cost of equipment:；(2) because radiator beta-ray has radiation
Property, its measure ray environmental pollution it is long-range, could really decompose within about 5730；(3) because β ray detectors and β are radiated
Source periodically needs to calibrate and clean, and the cost of equipment maintenance that its opposite band is come is higher.For skill present in above-mentioned prior art
How art problem, research and develop one kind and only need to a β ray detector and a radiator beta-ray, it is continuously online both to have completed binary channels
The device of sampling process has important practical significance.
The content of the invention
For problems of the prior art, binary channels particulate matter is automatically determined it is an object of the invention to provide one kind
The device of mass concentration, really solves and only needs to a β ray detector and a radiator beta-ray, can both complete binary channels company
Continuous on-line sampling process, it is simple and reliable for structure, reduce instrument cost and later maintenance cost.
The technical scheme that the present invention takes is：
A kind of device for automatically determining binary channels particulate matter quality concentration, including particulate separation sampling module, sample air humidity
Spend control module, twin-channel sample detecting module, two-way constant flow regulation module, particulate separation sampling module and sample air humidity degree
Control module is connected, and the gas outlet of sample gas humidity control module connects twin-channel sample detecting module；Twin-channel sampling
The two-way gas outlet of detection module is connected with two-way constant flow regulation module respectively, and the gas outlet of two-way constant flow regulation module passes through three
Port valve is connected with sampling pump.The quality that apparatus of the present invention can determine PM10 and the particulate matters of PM 2.5 in atmospheric environment simultaneously is dense
Degree, with simple in construction, maintenance cost is low, cycle of operation length, data quick and precisely, really realize on-line automatic continuous monitoring.
Twin-channel sample detecting module includes first via particulate matter acquisition testing portion, the second road particulate matter collection portion and filter
Paper tape left and right moving control portion, wherein, first via particulate matter acquisition testing portion includes the first dirt sample sample detecting passage, a β
Ray detector and a beta ray source；Second road particulate matter collection portion only includes the second dirt sample acquisition channel；Filter-paper-tape or so is moved
Dynamic control unit include left side advance collection motor driving wheel, right side retreat collection motor driving wheel, positioning photoelectricity opposite type sensor,
Filter-paper-tape and striker positional punch mechanism, filter-paper-tape are set in by the separately-driven left side advance collection motor of the motor of left and right two
Driving wheel, right side are retreated on collection motor driving wheel, and positioning photoelectricity opposite type sensor is oppositely arranged on the both sides up and down of filter-paper-tape,
Striker positional punch mechanism is arranged on the two-way nozzle lifting control mechanism above filter-paper-tape.
Further, β is installed in the lower end of the first dirt sample sample detecting passage in the first via particulate matter acquisition testing portion
Radiographic source, beta ray source and β-ray detector are oppositely arranged installed in the upper and lower both sides of filter-paper-tape.
Further, the first dirt sample sample detecting passage and the second dirt sample acquisition channel are in parallel arrangement and fixed peace
On two-way nozzle lifting control mechanism.
Further, strainer is provided with the filter-paper-tape, strainer is arranged along both sides above and below filter-paper-tape
The expansion tightening wheel of setting.
Further, the striker positional punch mechanism includes perforating needle, and perforating needle is threadedly secured to two-way nozzle
On lifting control mechanism.
Further, the two-way nozzle lifting control mechanism controls the first dirt sample using eccentric cam and alignment sensor
The upper and lower displacement position of sample detecting passage, the nozzle of the second dirt sample acquisition channel.
Further, the positioning photoelectricity opposite type sensor and striker positional punch mechanism retreat collection motor along right side
The driving direction of driving wheel is successively set on the both sides of the first dirt sample sample detecting passage.
Further, the particulate separation sampling module by PM10 cutters, except water bottle, virtual impact formula cutter,
Sampling pipe constitute, PM10 cutters with except water bottle is connected, the lower end of PM10 cutters is connected with virtual impact formula cutter, and
Sealed, virtual impact formula cutter is connected with two sampling pipes respectively, sampling pipe lower end connecting pipe adapter, managed with O-ring
Road adapter is connected with the first dirt sample sample detecting passage, the second dirt sample acquisition channel of twin-channel sample detecting module.
Further, the sample gas humidity control module is by sampling pipe heat block, muff, sample air humidity degree modulator group
Into sampling pipe heat block and its muff covering are installed in the sampling pipe periphery of particulate separation sampling module bottom, sample air humidity
The circuit of degree modulator is connected with instrument host.
Further, the two-way constant flow regulation module is made up of two flow controlling units and 1 sampling pump, Mei Geliu
Measuring control unit includes flow sensor, high efficiency particulate air filter, ratio adjusting valve, temperature sensor, one
Individual pressure sensor and a humidity sensor, the first dirt sample sample detecting passage of twin-channel sample detecting module, second
Two sample gas channel outlets of dirt sample acquisition channel are connected by pipeline with high efficiency particulate air filter, and pressure sensing is provided with the pipeline
Device, temperature sensor and humidity sensor, after high efficiency particulate air filter outlet is connected with mass flow sensor, gas is adjusted into ratio
Valve is saved, two-way ratio adjusting valve is connected by triple valve with sampling pump.
Beneficial effects of the present invention are：
Particulate separation sampling module in the present invention：Particulate matter in air passes through after TSP cutters, respectively through
After built-in PM10 and PM2.5 two-way cutters, the first dirt sample for respectively enteing right side first via particulate matter acquisition testing portion is adopted
Sample sense channel, the second dirt sample acquisition channel in the second road of left side particulate matter collection portion；Complete particulate matter is precisely separating work.
Sample gas humidity control module：Because ambient humidity crosses the calculating generation that conference causes the concentration value of particulate matter in air
Error；So in the outside of right side the first dirt sample sample detecting passage and left side the second dirt sample acquisition channel, being respectively mounted heating
Module, by controlling the two heating modules respectively, the humid control of the two gas circuits of dynamic regulation is in normal scope.
Twin-channel sample detecting module, which is truly realized, only needs to a β ray detector and a radiator beta-ray, passes through
Circulation driving left side advance collection motor driving wheel, right side retreat collection motor driving wheel operation a cycle, and realization is examined respectively
PM2.5 and PM10 concentration is surveyed, the continuous on-line sampling process of binary channels can have both been completed, it is simple and reliable for structure, reduce instrument cost
And later maintenance cost.
Two flow controlling units of two-way constant flow regulation module can ensure the stream of particulate separation sampling module two-way
Amount is stable in 1.67L/min.
This binary channels particulate matter automated watch-keeping facility of the present invention can complete the Atmospheric particulates of field unattended
Automatic monitoring task, is measured while achievable PM10 and PM2.5 particle concentrations, and realization is continuous, online, supervise in real time, automatically
Survey, with simple in construction, cycle of operation length, easy to maintenance, Monitoring Data quick and precisely, can be carried out with console for centralized control it is real-time
Transmission and the remarkable advantage of control, there is higher economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is twin-channel sample detecting modular structure schematic diagram in the present invention；
Fig. 3 is twin-channel sample detecting modular structure detailed schematic in the present invention；
Wherein, 1, particulate separation sampling module；2nd, sample gas humidity control module；3rd, twin-channel sample detecting module；
4th, two-way constant flow regulation module；5th, the first dirt sample sample detecting passage；6th, the second dirt sample acquisition channel；7th, left side advance collection electricity
Machine driving wheel；8th, photoelectricity opposite type sensor is positioned；9th, β-ray detector；10th, two-way nozzle lifting control mechanism；11st, β rays
Source；12nd, striker positional punch mechanism；13rd, filter-paper-tape；14th, right side retreats collection motor driving wheel；15th, strainer.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, a kind of device for automatically determining binary channels particulate matter quality concentration, including particulate separation sampling mold
Block 1, sample gas humidity control module 2, twin-channel sample detecting module 3, two-way constant flow regulation module 4, particulate separation sampling
Module 1 is connected with sample gas humidity control module 2, and the gas outlet of sample gas humidity control module 2 connects twin-channel sample detecting
Module 3；The two-way gas outlet of twin-channel sample detecting module 3 is connected with two-way constant flow regulation module 4 respectively, and two-way constant current is adjusted
The gas outlet of section module 4 is connected by triple valve with sampling pump.Apparatus of the present invention can determine simultaneously in atmospheric environment PM10 and
The mass concentration of the particulate matters of PM 2.5, with simple in construction, maintenance cost is low, cycle of operation length, data quick and precisely, it is real real
Present line automatic continuous monitoring.
Twin-channel sample detecting module 3 include first via particulate matter acquisition testing portion, the second road particulate matter collection portion and
The left and right moving control portion of filter-paper-tape 13, wherein, first via particulate matter acquisition testing portion include the first dirt sample sample detecting passage 5,
One β-ray detector 9 and a beta ray source 11；Second road particulate matter collection portion only includes the second dirt sample acquisition channel 6；Filter
The left and right moving control portion of paper tape 13 includes left side advance collection motor driving wheel 7, right side and retreats collection motor driving wheel 14, positioning
Photoelectricity opposite type sensor 8, filter-paper-tape 13 and striker positional punch mechanism 12, filter-paper-tape 13 are set in by the motor difference of left and right two
The left side advance collection motor driving wheel 7 of driving, right side are retreated on collection motor driving wheel 14, positioning photoelectricity opposite type sensor 8
The both sides up and down of filter-paper-tape 13 are oppositely arranged on, striker positional punch mechanism 12 is arranged on the two-way nozzle liter of the top of filter-paper-tape 13
Drop on controlling organization 10.
Further, β is installed in the lower end of the first dirt sample sample detecting passage 5 in the first via particulate matter acquisition testing portion
Radiographic source 11, beta ray source 11 and β-ray detector 9 are oppositely arranged installed in the upper and lower both sides of filter-paper-tape 13.
Further, the first dirt sample sample detecting passage 5 and the second dirt sample acquisition channel 6 are in parallel arrangement and fixation
On two-way nozzle lifting control mechanism 10.
Further, strainer 15 is provided with the filter-paper-tape 13, strainer 15 is arranged along filter-paper-tape 13
The expansion tightening wheel that both sides are set up and down.
Further, the striker positional punch mechanism 12 includes perforating needle, and perforating needle is threadedly secured to two-way spray
On mouth lifting control mechanism 10.
Further, the two-way nozzle lifting control mechanism 10 controls the first dirt using eccentric cam and alignment sensor
The upper and lower displacement position of sample sample detecting passage 5, the nozzle of the second dirt sample acquisition channel 6.
Further, the positioning photoelectricity opposite type sensor 8 and striker positional punch mechanism 12 retreat collection along right side
The driving direction of motor driving wheel 14 is successively set on the both sides of the first dirt sample sample detecting passage 5.
Further, the particulate separation sampling module 1 by PM10 cutters, except water bottle, virtual impact formula cutter,
Sampling pipe constitute, PM10 cutters with except water bottle is connected, the lower end of PM10 cutters is connected with virtual impact formula cutter, and
Sealed, virtual impact formula cutter is connected with two sampling pipes respectively, sampling pipe lower end connecting pipe adapter, managed with O-ring
Road adapter is connected with the first dirt sample sample detecting passage 5, the second dirt sample acquisition channel 6 of twin-channel sample detecting module 3
Connect.
Further, the sample gas humidity control module 2 is by sampling pipe heat block, muff, sample air humidity degree modulator group
Into sampling pipe heat block and its muff covering are installed in the sampling pipe periphery of the bottom of particulate separation sampling module 1, sample air humidity
The circuit of degree modulator is connected with instrument host.
Further, the two-way constant flow regulation module 4 is made up of two flow controlling units and 1 sampling pump, each
Flow controlling unit include flow sensor, high efficiency particulate air filter, ratio adjusting valve, temperature sensor,
One pressure sensor and a humidity sensor, the first dirt sample sample detecting passage 5 of twin-channel sample detecting module 3,
Two sample gas channel outlets of the second dirt sample acquisition channel 6 are connected by pipeline with high efficiency particulate air filter, and pressure is provided with the pipeline
Force snesor, temperature sensor and humidity sensor, after high efficiency particulate air filter outlet is connected with mass flow sensor, gas enters
Ratio adjusting valve, two-way ratio adjusting valve is connected by triple valve with sampling pump.
The carrying out practically process of twin-channel sample detecting module 3 is：
A:First dirt sample sample detecting passage 5, the second road of left side particulate matter in right side first via particulate matter acquisition testing portion
Two nozzles of the second dirt sample acquisition channel 6 in collection portion are driven by two-way nozzle lifting control mechanism 10 and risen to most simultaneously
Top, then left side advance collection motor driving wheel 7 is under the driving effect of motor, and driving filter-paper-tape 13 is past to move left a work
Position, it is ensured that be now the unsampled filter-paper-tape 13 of blank at the nozzle of the first dirt sample sample detecting passage 5.
B:The two of first dirt sample sample detecting passage 5, the second dirt sample acquisition channel 6 in the second road of left side particulate matter collection portion
Individual nozzle is driven by two-way nozzle lifting control mechanism 10 drops to bottommost simultaneously, it is ensured that right side first via particulate matter is gathered
The sampling gas circuit sealing in test section and the second road of left side particulate matter collection portion, simultaneously two-way nozzle lifting control mechanism 10 drives
Dynamic striker positional punch mechanism 12 can make a call to a positioning hole in filter-paper-tape 13, and now first via particulate matter acquisition testing portion can be to the
The β that one filter paper acquisition zone carries out the background blank sample of 4 minutes is counted, and draws count value I0.
C:The two of first dirt sample sample detecting passage 5, the second dirt sample acquisition channel 6 in the second road of left side particulate matter collection portion
Individual nozzle is driven by two-way nozzle lifting control mechanism 10 and rises to top simultaneously, and then filter-paper-tape 13 is turned left and moved again
One station, it is ensured that now two collection positions are all the unsampled filter-paper-tapes 13 of blank.
D:The two of first dirt sample sample detecting passage 5, the second dirt sample acquisition channel 6 in the second road of left side particulate matter collection portion
Individual nozzle is driven by two-way nozzle lifting control mechanism 10 drops to bottommost simultaneously, starts sampling, right in sampling process
Dust spot at first via particulate matter acquisition testing portion carries out beta-ray gauge number, waits after end to be sampled, now can be with according to count value
The quality of dust spot herein is calculated, the mass concentration of the particulate matter of this dust spot can have both been calculated according to the sampling volume of this dust spot；
E:The two of first dirt sample sample detecting passage 5, the second dirt sample acquisition channel 6 in the second road of left side particulate matter collection portion
Individual nozzle is driven by two-way nozzle lifting control mechanism 10 and rises to top simultaneously, and then filter-paper-tape 13 is past moves right one
Station, now the dust spot to be detected at first via particulate matter acquisition testing portion is adopted in the second road particulate matter in sampling process
Dust spot at collection portion, the final β now carried out 4 minutes to it is counted, and draws count value Ix.According to the initial weight of dust spot herein
Value I0 and whole weight values Ix calculate the quality of dust spot herein, and the particulate matter of this dust spot can be both calculated according to the sampling volume of this dust spot
Mass concentration；
F:Sampling process to this cycle terminates, during complete periodic sampling, while determining big compression ring
The mass concentration of PM10 and the particulate matters of PM 2.5 in border, then continues to repeat above-mentioned sampling process in next cycle, real real
Present line is automatically continuously detected.
Described above is not limitation of the present invention, it should be pointed out that：Come for those skilled in the art
Say, on the premise of essential scope of the present invention is not departed from, some variations, modifications, additions or substitutions can also be made, these improvement
Protection scope of the present invention is also should be regarded as with retouching.
Claims (10)
1. a kind of device for automatically determining binary channels particulate matter quality concentration, it is characterised in that particulate separation sampling module with
Sample gas humidity control module is connected, and the gas outlet of sample gas humidity control module connects twin-channel sample detecting module；Bilateral
The two-way gas outlet of the sample detecting module in road is connected with two-way constant flow regulation module respectively, the outlet of two-way constant flow regulation module
Mouth is connected by triple valve with sampling pump；Twin-channel sample detecting module includes first via particulate matter acquisition testing
Portion, the second road particulate matter collection portion and filter-paper-tape left and right moving control portion, wherein, first via particulate matter acquisition testing portion includes the
One dirt sample sample detecting passage, a β-ray detector and a beta ray source；Second road particulate matter collection portion only includes second
Dirt sample acquisition channel；Filter-paper-tape left and right moving control portion includes left side advance collection motor driving wheel, right side and retreats collection motor
Driving wheel, positioning photoelectricity opposite type sensor, filter-paper-tape and striker positional punch mechanism, filter-paper-tape are set in by the motor of left and right two
Separately-driven left side advance collection motor driving wheel, right side are retreated on collection motor driving wheel, position photoelectricity opposite type sensor
The both sides up and down of filter-paper-tape are oppositely arranged on, striker positional punch mechanism is arranged on the two-way nozzle elevating control above filter-paper-tape
In mechanism.
2. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
The lower end of the first dirt sample sample detecting passage in first via particulate matter acquisition testing portion is installed by beta ray source, beta ray source and β rays
Detector is oppositely arranged installed in the upper and lower both sides of filter-paper-tape.
3. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
First dirt sample sample detecting passage and the second dirt sample acquisition channel are in parallel arrangement and are fixedly mounted on two-way nozzle elevating control
In mechanism.
4. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Strainer is provided with filter-paper-tape, strainer is arranged along the expansion tightening wheel that both sides are set above and below filter-paper-tape.
5. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Striker positional punch mechanism includes perforating needle, and perforating needle is threadedly secured on two-way nozzle lifting control mechanism.
6. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Two-way nozzle lifting control mechanism controls the first dirt sample sample detecting passage, the second dirt sample using eccentric cam and alignment sensor
The upper and lower displacement position of the nozzle of acquisition channel.
7. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Position photoelectricity opposite type sensor and striker positional punch mechanism and retreat the driving direction of collection motor driving wheel successively along right side
It is arranged on the both sides of the first dirt sample sample detecting passage.
8. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Particulate separation sampling module is constituted by PM10 cutters, except water bottle, virtual impact formula cutter, sampling pipe, PM10 cutters
With except water bottle is connected, the lower end of PM10 cutters is connected with virtual impact formula cutter, and is sealed with O-ring, virtual impact
Formula cutter is connected with two sampling pipes respectively, and sampling pipe lower end connecting pipe adapter, pipeline adapter is adopted with twin-channel
The first dirt sample sample detecting passage, the second dirt sample acquisition channel of sample detection module are connected.
9. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that described
Sample gas humidity control module is made up of sampling pipe heat block, muff, sample air humidity degree modulator, sampling pipe heat block and its insulation
Set covering is installed in the sampling pipe periphery of particulate separation sampling module bottom, the circuit and instrument host of sample air humidity degree modulator
It is connected.
10. a kind of device for automatically determining binary channels particulate matter quality concentration according to claim 1, it is characterised in that institute
State two-way constant flow regulation module to be made up of two flow controlling units and 1 sampling pump, each flow controlling unit includes one
Flow sensor, a high efficiency particulate air filter, a ratio adjusting valve, a temperature sensor, a pressure sensor and one
Humidity sensor, the first dirt sample sample detecting passage of twin-channel sample detecting module, two of the second dirt sample acquisition channel
Sample gas channel outlet is connected by pipeline with high efficiency particulate air filter, and pressure sensor, temperature sensor and wet are provided with the pipeline
Sensor is spent, after high efficiency particulate air filter outlet is connected with mass flow sensor, gas enters ratio adjusting valve, two-way proportion adjustment
Valve is connected by triple valve with sampling pump.
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| CN201720864129.6U Active CN206920288U (en) | 2017-05-31 | 2017-07-17 | A kind of device for automatically determining binary channels particulate matter quality concentration |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860598A (en) * | 2017-11-24 | 2018-03-30 | 华测检测认证集团股份有限公司 | A kind of portable cutter for particles fast calibration device and its calibration method |
| CN109211744A (en) * | 2018-10-26 | 2019-01-15 | 北京纪本科技有限公司 | Optical method particulate material measurement device and method |
| CN109238933A (en) * | 2018-09-29 | 2019-01-18 | 沈阳利凯环境仪器有限公司 | A kind of particle monitoring device |
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