CN106840293A - A kind of multi-parameter mass flowmenter - Google Patents
A kind of multi-parameter mass flowmenter Download PDFInfo
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- CN106840293A CN106840293A CN201710168783.8A CN201710168783A CN106840293A CN 106840293 A CN106840293 A CN 106840293A CN 201710168783 A CN201710168783 A CN 201710168783A CN 106840293 A CN106840293 A CN 106840293A
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- density
- pipe
- flow
- main measurement
- measurement pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
- G01F1/88—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure with differential-pressure measurement to determine the volume flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/48—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by a capillary element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/026—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
- G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
- G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
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Abstract
The present invention discloses a kind of multi-parameter mass flowmenter, including main measurement pipe, and density measure Guan Yuzhu measurement pipes are connected connection, and the lower end of density measure pipe is connected with density throttling element with the horizontal tube connection of main measurement pipe；Density measure tube side face is connected with density pressure connector under pressure connector and density；Pressure connector is connected by density capillary with density transmitter under pressure connector and density in density；Top on the right side of main measurement pipe is connected with flow throttling element, and flow pressure connector is connected with the side of main measurement pipe, and flow pressure connector is connected by flow capillary in the both sides of flow throttling element with flow transmitter；Top installation settings on the right side of main measurement pipe has pressure transmitter, and temperature element (TE base is connected with density measure pipe, and installation settings has temperature element (TE on temperature element (TE base；It can keep very high measurement accuracy, realize stably measured, and vdiverse in function, cost is relatively low.
Description
Technical field
The present invention relates to measuring equipment technical field, and in particular to a kind of multi-parameter mass flowmenter.
Background technology
At present, as flow measurement control technology develops, particularly in industry becomes more meticulous production management, to flow measurement
It is required that more and more higher.
Being only capable of measuring volume flow existing flowmeter, it has unitary function more, it is impossible to meet actual metered work more
It is required that problem；Although it can coordinate the densitometer to carry out density compensation, the density compensation needs partial installation, not only takes
Equipment construction installing space, and densitometer is high to flow control requirement, it is limited to significantly and uses scope, and practical application effect is not
It is good；And it lacks medium monitoring function, it is necessary to install other instrument, is brought inconvenience to user.Existing some liquid qualities
Flowmeter can be with degree of precision ground direct measurement mass of medium flow, but it has poor seismic behavior more, once pipe
Road will cause that measurement error is dramatically increased in the presence of some vibrations, and it involves great expense, and service precision is not high with stability, into
This height, causes, using burden, to be unsuitable for popularization and application to enterprise.
For this reason, it may be necessary to a kind of multi-parameter mass flowmenter, solves the above mentioned problem in the presence of prior art.
The content of the invention
It is an object of the invention to provide a kind of multi-parameter mass flowmenter, to solve the function in the presence of prior art
It is single, it is impossible to meet actual metered job requirement, equipment construction installing space is taken, its supporting densitometer is to flow control requirement
Height, limits to it and uses scope significantly, and practical application effect is not good, it is necessary to install other measuring instruments, is brought inconvenience to user,
Conventional liq mass flowmenter poor seismic behavior, involves great expense, and service precision is not high with stability, high cost, is caused to enterprise
Using burden, the problems such as be unsuitable for popularization and application.
To achieve the above object, the present invention provides a kind of multi-parameter mass flowmenter, including main measurement pipe, main measurement pipe bag
Left side pipe, horizontal tube and the right side pipe of the connection that is interconnected are included, left side pipe, horizontal tube and right side pipe form "U" shaped structure, close
The top for spending measurement pipe is connected with the top of the left side pipe of main measurement pipe and is connected, the bottom of density measure pipe and main measurement pipe
Horizontal tube is connected connection, and the lower end of density measure pipe is connected with density and throttles with the horizontal tube connection of main measurement pipe
Part；The side on density measure pipe top is connected with pressure connector in density, and the side of density measure pipe bottom is connected with density
Lower pressure connector；Pressure connector passes through density capillary and density transmitter phase under pressure connector and density in density
Connection, density transmitter is connected with holding wire；
Top on the right side of main measurement pipe is connected with flow throttling element, and flow is connected with the side of main measurement pipe
Pressure connector, flow pressure connector is connected by flow capillary in the both sides of flow throttling element with flow transmitter,
Flow transmitter is connected with holding wire；
Top installation settings on the right side of main measurement pipe has pressure transmitter, and pressure transmitter is connected with holding wire；
Temperature element (TE base is connected with density measure pipe, installation settings has temperature element (TE on temperature element (TE base,
Temperature element (TE is connected with holding wire.
Preferably, two ends of main measurement pipe are respectively arranged with pipeline coupling flange.
Preferably, two ends of main measurement pipe are provided with horizontal component.
Preferably, pipeline coupling flange is separately positioned on two horizontal components of end of main measurement pipe.
Preferably, the top of density measure pipe is provided with bending part, the end of the top bending part of density measure pipe
It is connected with the left side pipe of main measurement pipe and is connected.
Preferably, pressure connection under pressure connector, density in main measurement pipe, density measure pipe, density throttling element, density
Part, density transmitter, density capillary and holding wire component density measuring mechanism；Main measurement pipe, flow throttling element, flow pressure
Connector, flow transmitter, flow capillary and holding wire constitute flow-metering mechanism；Main measurement pipe, pressure transmitter and letter
Number line constitutes pressure elements；Density measure pipe, temperature element (TE, temperature element (TE base and holding wire constitute temperature-measuring element.
Preferably, pipeline coupling flange, main measurement pipe and density measure pipe constitute connecting line.
Preferably, connecting line outer wrap is provided with shell, gauge outfit base is provided with the top of shell, on gauge outfit base
Gauge outfit is installed.
Preferably, shell, gauge outfit base and gauge outfit constitute shell and gauge outfit component.
Preferably, holding wire passes through threading protection suite, and is extend into gauge outfit by gauge outfit mounting seat.
The invention has the advantages that：
Multi-parameter mass flowmenter of the invention, can solve the problem that the unitary function in the presence of prior art, it is impossible to meet
Actual metered job requirement, takes equipment construction installing space, and its supporting densitometer is high to flow control requirement, and it is limited to significantly
Using scope, practical application effect is not good, it is necessary to install other measuring instruments, is brought inconvenience to user, and poor seismic behavior is made
High price is expensive, and service precision is not high with stability, conventional liq mass flowmenter high cost, is caused using burden to enterprise, uncomfortable
The problems such as popularization and application；It can both measure mass flow, it is also possible to measure medium volume flow, Media density, medium pressure
Power and medium temperature, can keep very high measurement accuracy, can realize stably measured, and it is insensitive to pipeline vibrations, expands significantly
Open up industry spot measurement and use scope；It can improve production security to medium state real-time monitoring；Its structure is closed
Reason, it is vdiverse in function, pipeline liquid medium measuring multiple parameters can be realized；Its use cost is low, measures safe to use, meets
Measuring multiple parameters demand, automatization level is high, saves human resources, meets measuring instrument demand, is widely used, application prospect
It is good.
Brief description of the drawings
Fig. 1 is the structural representation of multi-parameter mass flowmenter of the invention；
Fig. 2 is the side view of multi-parameter mass flowmenter of the invention.
In figure, 1 is pipeline coupling flange, and 2 is main measurement pipe, and 3 is density measure pipe, and 4 is density throttling element, and 5 is flow
Throttling element, 6 is pressure connector in density, and 7 is pressure connector under density, and 8 is density capillary, and 9 is density transmitter, 10
It is shell, 11 is flow pressure connector, and 12 is flow capillary, and 13 is flow transmitter, and 14 is pressure transmitter, and 15 is temperature
Degree component mount, 16 is temperature element (TE, and 17 is holding wire, and 18 is threading protection suite, and 19 is gauge outfit base, and 20 is gauge outfit.
Specific embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
A kind of multi-parameter mass flowmenter, as depicted in figs. 1 and 2, including main measurement pipe 2, main measurement pipe 2 is including mutually interconnecting
Lead to left side pipe, horizontal tube and the right side pipe for connecing, left side pipe, horizontal tube and right side pipe form "U" shaped structure, density measure pipe
3 top is connected with the top of the left side pipe of main measurement pipe 2 and is connected, the level of the bottom of density measure pipe 3 and main measurement pipe 2
Pipe is connected connection, and the lower end of density measure pipe 3 is connected with density throttling element with the horizontal tube connection of main measurement pipe 2
4；The side on the top of density measure pipe 3 is connected with pressure connector 6 in density, and the side of the bottom of density measure pipe 3 is connected with close
The lower pressure connector 7 of degree；Pressure connector 7 is become by density capillary 8 with density under pressure connector 6 and density in density
Device 9 is sent to be connected, density transmitter 9 is connected with holding wire 17；
The top on the right side of main measurement pipe 2 is connected with flow throttling element 5, is connected with the side of main measurement pipe 2
Flow pressure connector 11, flow pressure connector 11 is become by flow capillary 12 in the both sides of flow throttling element 5 with flow
Device 13 is sent to be connected, flow transmitter 13 is connected with holding wire 17；
The top installation settings on the right side of main measurement pipe 2 has pressure transmitter 14, and pressure transmitter 14 is connected with holding wire 17
Connect；
Temperature element (TE base 15 is connected with density measure pipe 3, installation settings has temperature on temperature element (TE base 15
Element 16, temperature element (TE 16 is connected with holding wire 17.
It can be seen that, the multi-parameter mass flowmenter of the present embodiment, it has following features：(1) integrated package assembly, built-in
Flow, density, temperature, pressure, each part interact, and measurement parameter is comprehensive available, ensure certainty of measurement, are set using totally-enclosed
Meter, delicate structure facilitates in-site installation operation, disclosure satisfy that industrial application environment；(2) its low cost, can greatly save and set
Standby investment.Pipeline typically vibrations are on many ginseng mass flow meter measurement precision without influence；(3) it uses main measurement pipe 2 to be surveyed with density
The structure that buret 3 is separated, and in the bottom packing density throttling element 4 of density measure pipe 3, density throttling element 4 could be arranged to
Infundibulate, can effectively control the interior media flow velocity of density measure pipe 3, so as to avoid velocity of medium dry to density measurements
Disturb, greatly improve density measurement accuracy, its infundibulate density throttling element 4 can be prevented effectively from medium impurity and be sunk at throttling element
Product, effectively prevents impurity from blocking throttling element；(4) because the density medium is in flow regime so that medium is constantly updated, so
Media density measurement substantially with working media density synchronous so that density measurements can more meet industrial production reality, improve
Certainty of measurement, it is to avoid traditional density meter quiescent atmosphere density measure drawback；(5) its main measurement pipe 2 is passed through using seamless steel pipe
Special process is processed and formed at one time (U-shape structure) so that its main measurement pipeline splices without any weld seam, so as to avoid conventional tube
Leakage and potential safety hazard that welding splicing is caused, product reliability are greatly improved；(6) its pressure, densitometer and liquid level gauge pressure
Using diaphragm pressure, with splendid anti-blocking, antiseptic power；Its connected mode is using threaded connection, it is to avoid conventional flange
The thick heaviness of attachment structure so that overall structure small volume, it is light, and also movable whorl attachment structure sealing and intensity are high,
Dielectric leakage is prevented effectively from, with splendid security；(7) it can simultaneously measure density, flow, temperature, pressure information, right
Measurement multi-parameter real-time continuous monitoring so that its function is very powerful, can in time be carried out pre- to production process real-time monitoring
It is alert, find that production is abnormal in time, with high safety in utilization；(8) its pressure elements is arranged on flowmeter rear portion, both can be with
Pipeline pressure is monitored, flowmeter working condition can be monitored again, killed two birds with one stone；(9) it uses totally-enclosed design, institute
There is measuring cell and pipeline to be in metastable working environment, it is to avoid traditional partial installation, each measurement part by dust,
Drench with rain, dirty, Exposure to Sunlight, electromagnetic environment high radiation, high and low temperature environment influence, occur drift, aging, data distortion, catastrophic failure
Situations such as damage, so as to improve DATA REASONING precision and stability.
Embodiment 2
A kind of multi-parameter mass flowmenter, it is similar to Example 1, except that, two ends difference of main measurement pipe 2
It is provided with pipeline coupling flange 1.
Preferably, two ends of main measurement pipe 2 are provided with horizontal component.
Preferably, pipeline coupling flange 1 is separately positioned on 2 two horizontal components of end of main measurement pipe.
Preferably, the top of density measure pipe 3 is provided with bending part, the end of the top bending part of density measure pipe 3
Portion is connected with the left side pipe of main measurement pipe 2 and is connected.
Preferably, pressure under pressure connector 6, density on main measurement pipe 2, density measure pipe 3, density throttling element 4, density
Connector 7, density transmitter 9, density capillary 8 and the component density measuring mechanism of holding wire 17；Main measurement pipe 2, flow throttles
Part 5, flow pressure connector 11, flow transmitter 13, flow capillary 12 and holding wire 17 constitute flow-metering mechanism；Main survey
Buret 2, pressure transmitter 14 and holding wire 17 constitute pressure elements；Density measure pipe 3, temperature element (TE 16, temperature element (TE base
15 and holding wire 17 constitute temperature-measuring element.
Preferably, pipeline coupling flange 1, main measurement pipe 2 and density measure pipe 3 constitute connecting line.
Embodiment 3
A kind of multi-parameter mass flowmenter, it is similar to Example 2, except that, connecting line outer wrap is provided with
Shell 10, the top of shell 10 is provided with gauge outfit base 19, and gauge outfit 20 is provided with gauge outfit base 19.
Preferably, shell 10, gauge outfit base 19 and gauge outfit 20 constitute shell and gauge outfit component.
Preferably, holding wire 17 passes through threading protection suite 18, and is extend into gauge outfit 20 by gauge outfit mounting seat 19.
Multi-parameter mass flowmenter of the invention, wherein flow computing meet following relational expression：
In formula：qvIt is volume flow；C is efflux coefficient；ε is inflatable coefficient；β is aperture ratio；D is opening diameter；Δp
It is differential pressure；ρ is measured Media density；
It carries out accurate measurement to density, and specific manifestation is：
(wherein：PSurveyIt is densimeter measurement pressure value, h is that density is vertically connected with part distance)；
Then (2) introduction-type (1) is obtained：
In formula：qmIt is instantaneous mass flow, Δ P1 is that differential pressure transmitter measures differential pressure, and Δ P is the differential pressure range upper limit, qmmax
It is the mass flow upper limit.
Multi-parameter mass flowmenter of the invention, its density measure pipe 3 and the upper weld of main measurement pipe 2, density measure pipe 3
Bottom is welded with the horizontal tube of main measurement pipe 2, and density throttling element 4 is welded on the bottom of density measure pipe 3, the upside of density measure pipe 3
Pressure connector 6 in face welding density, pressure connector 7 under the downside of density measure pipe 3 welding density, density transmitter 9 is believed
Number transmitted by holding wire 17；Flow throttling element 5 is welded on the middle and upper part of main measurement pipe 2, and the signal of flow transmitter 13 passes through signal
Line 17 is transmitted；The signal of pressure transmitter 14 is transmitted by holding wire 17；The signal of temperature element (TE 16 is transmitted by holding wire 17.Pipeline
Adpting flange 1 and the welding of the upper horizontal portions of main measurement pipe 2, the top fold part of density measure pipe 3 and the vertical tube of main measurement pipe 2
Weld road upper weld, 2 times horizontal pipeline parts in the bottom of density measure pipe 3 and main measurement pipe.Its suitable measurement conventional flow meters
It is difficult to the liquid mass flow for measuring；The flowmeter can both measure mass flow, can also measure medium volume flow, medium
Density, pressure medium and medium temperature, keep very high measurement accuracy and measurement stability；And the flowmeter is also to medium state
Real-time monitoring, improves production security；The flow meter function is various, solves pipeline liquid medium measuring multiple parameters problem；Should
Flowmeter is lower than traditional liquid mass flowmenter use cost, measurement safety in utilization is higher；More meet measuring multiple parameters need
Ask, the system automation level is high, save human resources, application prospect is very considerable.
Multi-parameter mass flowmenter of the invention, is mainly improved said structure, other NM function, portions
Part and structure, when needed, can be implemented using the part and structure that can realize corresponding function in the prior art.
Although the present invention is described in detail above to have used general explanation and specific embodiment, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of multi-parameter mass flowmenter, including main measurement pipe (2), it is characterised in that main measurement pipe (2) is including being interconnected
The left side of connection is managed, horizontal tube and right side are managed, and left side pipe, horizontal tube and right side pipe form "U" shaped structure, density measure pipe
(3) top is connected with the top of the left side pipe of main measurement pipe (2) and is connected, bottom and the main measurement pipe of density measure pipe (3)
(2) horizontal tube is connected connection, and the lower end of density measure pipe (3) is connected with the horizontal tube connection of main measurement pipe (2) and sets
It is equipped with density throttling element (4)；The side on density measure pipe (3) top is connected with pressure connector (6) in density, density measure pipe
(3) side of bottom is connected with pressure connector (7) under density；Pressure connector under pressure connector (6) and density in density
(7) it is connected with density transmitter (9) by density capillary (8), density transmitter (9) is connected with holding wire
(17)；
Top on the right side of main measurement pipe (2) is connected with flow throttling element (5), connect setting on the side of main measurement pipe (2)
There is flow pressure connector (11), flow pressure connector (11) passes through flow capillary in the both sides of flow throttling element (5)
(12) it is connected with flow transmitter (13), flow transmitter (13) is connected with holding wire (17)；
Top installation settings on the right side of main measurement pipe (2) has pressure transmitter (14), pressure transmitter (14) and holding wire (17)
It is connected；
Temperature element (TE base (15) is connected with density measure pipe (3), installation settings has temperature on temperature element (TE base (15)
Degree element (16), temperature element (TE (16) is connected with holding wire (17).
2. multi-parameter mass flowmenter as claimed in claim 1, it is characterised in that two ends difference of main measurement pipe (2)
It is provided with pipeline coupling flange (1).
3. multi-parameter mass flowmenter as claimed in claim 2, it is characterised in that two ends of main measurement pipe (2) are set
There is horizontal component.
4. multi-parameter mass flowmenter as claimed in claim 3, it is characterised in that pipeline coupling flange (1) is separately positioned on
On (2) two horizontal components of end of main measurement pipe.
5. multi-parameter mass flowmenter as claimed in claim 4, it is characterised in that the top of density measure pipe (3) is provided with
Bending part, the end of the top bending part of density measure pipe (3) is connected with the left side pipe of main measurement pipe (2) and is connected.
6. the multi-parameter mass flowmenter as any one of claim 1-5, it is characterised in that main measurement pipe (2), density
Pressure connector (7), density transmitter under pressure connector (6), density in measurement pipe (3), density throttling element (4), density
(9), density capillary (8) and holding wire (17) component density measuring mechanism；Main measurement pipe (2), flow throttling element (5), flow
Pressure connector (11), flow transmitter (13), flow capillary (12) and holding wire (17) constitute flow-metering mechanism；Main survey
Buret (2), pressure transmitter (14) and holding wire (17) constitute pressure elements；Density measure pipe (3), temperature element (TE (16), temperature
Degree component mount (15) and holding wire (17) constitute temperature-measuring element.
7. multi-parameter mass flowmenter as claimed in claim 6, it is characterised in that pipeline coupling flange (1), main measurement pipe
(2) and density measure pipe (3) constitute connecting line.
8. multi-parameter mass flowmenter as claimed in claim 7, it is characterised in that connecting line outer wrap is provided with shell
(10) gauge outfit base (19), is provided with the top of shell (10), gauge outfit (20) is installed on gauge outfit base (19).
9. multi-parameter mass flowmenter as claimed in claim 8, it is characterised in that shell (10), gauge outfit base (19) and table
Head (20) constitutes shell and gauge outfit component.
10. multi-parameter mass flowmenter as claimed in claim 9, it is characterised in that holding wire (17) is through threading protective case
Part (18), and extend into gauge outfit (20) by gauge outfit mounting seat (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168783.8A CN106840293A (en) | 2017-03-21 | 2017-03-21 | A kind of multi-parameter mass flowmenter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168783.8A CN106840293A (en) | 2017-03-21 | 2017-03-21 | A kind of multi-parameter mass flowmenter |
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| CN106840293A true CN106840293A (en) | 2017-06-13 |
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| CN201710168783.8A Pending CN106840293A (en) | 2017-03-21 | 2017-03-21 | A kind of multi-parameter mass flowmenter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319891A (en) * | 2019-07-10 | 2019-10-11 | 上海五零盛同信息科技有限公司 | A kind of high-precision wide-range integrated differential pressure type flow meter |
| CN110319891B (en) * | 2019-07-10 | 2024-06-07 | 上海五零盛同信息科技有限公司 | High-precision wide-range integrated differential pressure type flow measuring device |
-
2017
- 2017-03-21 CN CN201710168783.8A patent/CN106840293A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319891A (en) * | 2019-07-10 | 2019-10-11 | 上海五零盛同信息科技有限公司 | A kind of high-precision wide-range integrated differential pressure type flow meter |
| CN110319891B (en) * | 2019-07-10 | 2024-06-07 | 上海五零盛同信息科技有限公司 | High-precision wide-range integrated differential pressure type flow measuring device |
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Application publication date: 20170613 |
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