CN202814828U - Fluid characteristic measurer - Google Patents
Fluid characteristic measurer Download PDFInfo
- Publication number
- CN202814828U CN202814828U CN 201220350937 CN201220350937U CN202814828U CN 202814828 U CN202814828 U CN 202814828U CN 201220350937 CN201220350937 CN 201220350937 CN 201220350937 U CN201220350937 U CN 201220350937U CN 202814828 U CN202814828 U CN 202814828U
- Authority
- CN
- China
- Prior art keywords
- vibration
- vibrating tube
- fluid
- measurement device
- property measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a fluid characteristic measurer which comprises a base, an actuator installed on the base, a vibration tube for contacting the measured fluid, a vibration sensor for detecting the vibration frequency F of the vibration tube and a controller, wherein the vibration tube is provided with an opened axially extended hollow chamber; the near end of the vibration tube is fixed on the base; a vibration transmission sheet is extended from the vibration tube in the radial direction; the vibration transmission sheet is contacted with the actuator; the controller controls the actuator to enable the vibration tube to have vibration by irregularly driving the vibration transmission sheet, and the characteristics of the fluid are calculated with the combination of the vibration frequency F and the temperature T of the fluid. The fluid characteristic measurer has higher fluid measurement precision, and is convenient to operate and small in size.
Description
Technical field
The utility model relates to measuring appliance, relates in particular to the fluid property measurement device.
Background technology
The fields such as oil, chemical industry, wine brewing usually need to carry out the measurement of fluid density in accumulating, production, process of exchange.Existing liquidensitometer mainly contains following three kinds of forms: glass density meter, pipe vibration tubular type density are taken into account gradiomanometer.
The glass density meter utilizes the law of buoyancy density measurement.Need sampling during operation, reading need to be looked squarely.If glass density meter temperature and fluid to be measured temperature differ larger, then measuring error can strengthen.Troublesome poeration and operating personnel are had relatively high expectations.
Pipe vibration tubular type densitometer utilizes the vibration principle density measurement.Fluid to be measured is by resonantron during operation, according to the liquid of different densities the change difference of resonantron frequency drawn density.This densitometer is had relatively high expectations to working environment, needs construction to change existing equipment and accesses densitometer.Pipeline densitometer itself is expensive, adds the construction complexity again, takes up room greatly, so limited its use and development.
Gradiomanometer calculates density according to 2 pressure differentials of locating about the fluid to be measured.The precision of this gradiomanometer is not high, mainly is to be subject to manometric degree of accuracy.Simultaneously this gradiomanometer is had relatively high expectations to installation environment, and the vertical range between must guaranteeing at 2 is so use less.
Therefore, be necessary to provide improved technical scheme to overcome the technical matters that exists in the prior art.
The utility model content
Technical problem underlying to be solved in the utility model provides fluid property measurement device easy to operate and that volume is little.
For solving the problems of the technologies described above, one side of the present utility model provides a kind of fluid property measurement device, and it comprises:
Pedestal;
Actuator, it is installed on the described pedestal;
Be used for contacting the vibrating tube of measured fluid, it has open axially extended hollow cavity, and the near-end of described vibrating tube is fixed to described pedestal, radially extends vibration-transmitting plate from described vibrating tube, and described vibration-transmitting plate contacts described actuator;
Vibration transducer, it surveys the vibration frequency F of described vibrating tube; And
Controller, it controls described actuator makes described vibrating tube produce vibration by driving described vibration-transmitting plate regularly, and calculates the characteristic of described fluid in conjunction with the temperature T of described vibration frequency F and fluid.
At above-mentioned fluid property measurement device, alternatively, the characteristic of described fluid is density or viscosity.
At above-mentioned fluid property measurement device, alternatively, described fluid property measurement device also comprises the thermometer that is installed on the described pedestal, and described thermometer is at least part of to be extended in the hollow cavity of described vibrating tube, and described thermometer is surveyed described temperature T.
At above-mentioned fluid property measurement device, alternatively, described pedestal arranges center pit and at least two periphery holes, described at least two periphery holes be arranged on symmetrically described center pit around, described vibrating tube is installed in the described center pit, and at least two described actuators are respectively installed in the described periphery hole.
At above-mentioned fluid property measurement device, alternatively, described fluid property measurement device comprises four piezo ceramic elements, described pedestal arranges four periphery holes, described four piezo ceramic elements are respectively installed in the described periphery hole, at least one described piezo ceramic element serves as described actuator, and at least one described piezo ceramic element serves as described vibration transducer, the driving voltage of the described actuator of described controller control cycle ground generation driving.
At above-mentioned fluid property measurement device, alternatively, the far-end of described vibrating tube overhangs, described vibrating tube inboard arranges the vibration isolation groove that the vibration that intercepts vibrating tube is transmitted from far-end to near-end, and described vibration-transmitting plate extends radially outwardly out and is connected at least in part the described far-end of described vibrating tube from described vibrating tube.
At above-mentioned fluid property measurement device, alternatively, the sheet that described vibration-transmitting plate is rounded, square or trapezoidal.
At above-mentioned fluid property measurement device, alternatively, described vibration-transmitting plate arranges through hole and/or reinforcement.
At above-mentioned fluid property measurement device, alternatively, described fluid property measurement device also comprises the first housing, and the circuit cabin of convection cell sealing is set in described the first housing, and described controller is installed in the described circuit cabin.
At above-mentioned fluid property measurement device, alternatively, described fluid property measurement device also comprises second housing fixing with respect to described the first housing, and described the second housing has the submergence chamber, described submergence chamber is provided with the through hole that is communicated with extraneous fluid, and described vibrating tube is arranged in described submergence chamber.
According to the utility model, the fluid property measurement device utilizes the variation of vibrating tube frequency to measure the characteristic of detected fluid, has higher fluid measurement precision, and, vibrating tube directly contacts measured fluid, fluid property measurement device of the present utility model can be applied to any degree of depth of the detected fluid in the calibration range, can avoid the loaded down with trivial details work of taking a sample, and is easy to operate.In addition, fluid property measurement body of the present utility model is long-pending little, and the small and exquisite exquisiteness of doing manual work is subjected to the restriction in space hardly.
By the detailed description below with reference to accompanying drawing, it is obvious that other side of the present utility model and feature become.But should be known in the only purpose design for explaining of this accompanying drawing, rather than as the restriction of scope of the present utility model, this is because it should be with reference to additional claim.Should also be appreciated that, unless otherwise noted, the unnecessary accompanying drawing of drawing to scale, they only try hard to illustrate conceptually structure described herein and flow process.
Description of drawings
Consult by reference to the accompanying drawings the detailed description of following embodiment, will understand more fully the utility model, reference numbers same in the accompanying drawing refers to element same in the view all the time.Wherein:
Fig. 1 shows the external structure synoptic diagram according to the fluid property measurement device of a kind of embodiment of the utility model;
Fig. 2 is that synoptic diagram is looked on the left side of fluid property measurement device shown in Figure 1;
Fig. 3 is for showing the cross-sectional schematic of fluid property measurement device inner structure shown in Figure 1;
Fig. 4 shows the enlarged diagram of the inside partial structurtes of fluid property measurement device shown in Figure 3;
Fig. 5 is the synoptic diagram of the base ends structure of demonstration fluid property measurement device shown in Figure 4;
Fig. 6 and Fig. 7 show the vibrating tube schematic cross-section that produces the ring mode vibration according to the vibrating tube of the fluid property measurement device of a kind of embodiment of the utility model; And
Fig. 8 shows the synoptic diagram that produces the type vibration of vacillating now to the left, now to the right according to the fluid property measurement device of a kind of embodiment of the utility model.
Embodiment
For helping those skilled in the art can understand definitely the claimed theme of the utility model, describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Such as Fig. 1 to shown in Figure 5, according to the fluid property measurement device 100 of a kind of embodiment of the utility model comprise pedestal 1, be installed in actuator 21 on the pedestal 1, be used for contacting measured fluid vibrating tube 3, survey vibration transducer 22 and the controller 5 of the vibration frequency F of vibrating tube 3.Wherein, vibrating tube 3 has open axially extended hollow cavity, and the near-end 31 of vibrating tube 3 is fixed to pedestal 1, radially extends vibration-transmitting plate 4 from vibrating tube 3, vibration-transmitting plate 4 contact activated devices 21; Controller 5 control actuators 21 make vibrating tube 3 produce vibration by driving vibration-transmitting plate 4 regularly, and in conjunction with the characteristic of the temperature T Fluid Computation of the vibration frequency F of vibrating tube 3 and fluid.Because the near-end 31 of vibrating tube 3 is fixed to pedestal 1, therefore, near-end 31 becomes the fulcrum of vibrating tube 3, and as below will describing in detail, under the driving of the ad hoc fashion of actuator 21, vibrating tube 3 can produce the vibration of AD HOC.In a kind of embodiment, the near-end 31 of vibrating tube 3 is welded to pedestal 1.
Alternatively; fluid property measurement device 100 also comprises the first housing 71; the circuit cabin 710 of convection cell sealing is set in the first housing 71; circuit cabin 710 is used for protection and the sealing of circuit; controller 5 is installed in the circuit cabin 710, be used for finishing data acquisition, amplification, processing and with the communication of gauge outfit.In a kind of embodiment, fluid property measurement device 100 also comprises communication cable 84.Communication cable 84 is electrically connected controller 5 and gauge outfit, and communication cable 84 is used for the communication of the data communication of controller 5 and gauge outfit.In addition, be in the portable situation at fluid property measurement device 100 of the present utility model, communication cable 84 also can be used for the suspension of vibration transducer 22.In other embodiment, controller 5 also can carry out wireless telecommunications with gauge outfit, and fluid property measurement device 100 can not comprise communication cable 84.
Alternatively; fluid property measurement device 100 also comprises the second housing 72 of fixing with respect to the first housing 71; the second housing 72 protection vibrating tube 3; avoid mechanical collision damage vibrating tube 3; the second housing 72 has submergence chamber 720; submergence chamber 720 is provided with the through hole 722 that is communicated with extraneous fluid, and vibrating tube 3 is arranged in submergence chamber 720.In a kind of embodiment, fluid property measurement device 100 also comprises web member 82.Web member 82 comprises two connecting portions, and one of them connecting portion is connected with the first housing 71, and another connecting portion is connected with the second housing 72, thereby the first housing 71 is fixing with respect to the second housing 72.In addition, also pedestal 1 can be fixed on the web member 82.
The difference of the frequency that in the different qualities fluid, shows according to vibrating tube 3, fluid property measurement device 100 of the present utility model can be measured the feature of fluid, and for example the characteristic of fluid is density or viscosity.In a kind of embodiment, the characteristic of fluid is density, fluid property measurement device 100 of the present utility model for example is a kind of immersion type vibrating densimeter, it utilizes the variation of vibrating tube 3 frequencies to measure the density of detected fluid, and controller 5 comes the density p of Fluid Computation according to following formula:
ρ=A+B×T+C/F
In above-mentioned formula, A, B and C are respectively the coefficient of demarcating in advance.
In this embodiment, vibrating tube 3 is the stainless-steel tube of 0.2 millimeter to 1 millimeter of wall thickness.In the general industry environment, the material of vibrating tube 3 can adopt the 316L stainless steel; In high corrosion environment, the material of vibrating tube 3 can adopt NI-SPAN-C902, with the corrosion damage of avoiding fluid that vibrating tube 3 is caused.In addition, the structure of vibrating tube 3 of the present utility model is not limited to circular tube structure shown in the drawings, and it can also be the structures such as rectangular tube, elliptical tube or irregular pipe.
Vibration-transmitting plate 4 is used for from actuator 21 to vibrating tube 3 transferring energies, keeps the autovibration of vibrating tube 3.In embodiment of the present utility model; vibration-transmitting plate 4 is the sheet of circle as shown in the figure; yet; vibration-transmitting plate 4 of the present utility model is not limited to circular sheet; vibration-transmitting plate 4 can also be square or trapezoidal sheet; in addition, on vibration-transmitting plate 4 through hole and/or reinforcement can also be set, these extended structures of vibration-transmitting plate 4 are all within scope of patent protection of the present utility model.Preferably, vibration-transmitting plate 4 has the material identical with vibrating tube 3, that is to say that vibration-transmitting plate 4 can be integrally formed with vibrating tube 3, and vibration-transmitting plate 4 consists of single type with vibrating tube 3, to guarantee precision and the long-time stability of vibrating tube 3.Vibration-transmitting plate 4 outer rims arrange abutment ring 40, and the ora terminalis 42 of abutment ring 40 is welded to pedestal 1.Extend thinner wall section 41 between vibration-transmitting plate 4 and the abutment ring 40.Thinner wall section 41 is less than vibration-transmitting plate 4 and abutment ring 40 thickness, thereby thinner wall section 41 is less than vibration-transmitting plate 4 and abutment ring 40 rigidity, and thinner wall section 41 reduces the restriction to vibration-transmitting plate 4, is conducive to the activity of vibration-transmitting plate 4.Abutment ring 40 arranges isolated groove 43.On the one hand, isolated groove 43 has reduced the rigidity of abutment ring 40, is conducive to the activity of the vibration-transmitting plate 4 that links to each other with abutment ring 40; On the other hand, isolated groove 43 reduces to weld the thermal stress that causes near ora terminalis 42.
The far-end of vibrating tube 3 overhangs, the inboard of vibrating tube 3 arranges the vibration isolation groove 30 that the vibration that intercepts vibrating tube 3 is transmitted from far-end to near-end, this vibration isolation groove 30 reduces the vibration of pedestal 1 effectively, and vibration-transmitting plate 4 extends radially outwardly out and is connected at least in part the far-end of vibrating tube 3 from vibrating tube 3.
Owing to rigidity and the elastic modulus of temperature effect vibrating tube 3, therefore affect the frequency of vibrating tube 3, can take the temperature correction measure according to embodiment of the present utility model for the impact of temperature.For example, fluid property measurement device 100 also comprises the thermometer 6 that is installed on the pedestal 1, and thermometer 6 is at least part of to extend in the hollow cavity of vibrating tube 3 temperature T of thermometer 6 real-time detection fluids, be used for density compensation and the close conversion of mark, frequency is carried out temperature compensation.In embodiment as shown in Figures 3 and 4, thermometer 6 is welded to pedestal.The type of thermometer 6 can be: platinum-resistance thermometer, thermocouple thermometer, semiconductor thermometer etc.; the structure of thermometer 6 is not limited to illustrated in vibrating tube 3; its also can be placed on vibrating tube 3 outer, be attached on the vibrating tube 3, to be attached to pedestal 1 first-class, the variation of these structures is all within scope of patent protection of the present utility model.
As shown in Figure 4 and Figure 5, pedestal 1 arranges center pit 11 and at least two periphery holes 12, at least two periphery holes 12 be arranged on symmetrically center pit 11 around, vibrating tube 3 is installed in the center pit 11, at least two actuators 21 are respectively installed in the periphery hole 12.Alternatively, pedestal 1 arranges four periphery holes 12 of axial perforation pedestal 1 and radially penetrates into four water holes 13 of neighboring from center pit 11.When dropping into fluid property measurement device 100 in the fluid, fluid enters center pit 11 by water hole 13, and can further enter vibrating tube 3.Water hole 13 collar extensions are large and interior young.Alternatively, water hole 13 perisporiums are tapering.When dropping into fluid property measurement device 100 in the fluid, this water hole 13 can suppress the generation of bubble.
In a kind of embodiment, fluid property measurement device 100 comprises four piezo ceramic elements, and four piezo ceramic elements are pressed on the vibration-transmitting plate 4 by screw 81.Pedestal 1 arranges four periphery holes 12, and periphery hole 12 is arranged on the same circumference of pedestal 1, yet the setting position of periphery hole 12 is not limited to same circumference, and it also can be ellipse or irregular figure.Four piezo ceramic elements are respectively installed in the periphery hole 12, and at least one piezo ceramic element serves as actuator 21, and at least one piezo ceramic element serves as vibration transducer 22, the driving voltage of controller 5 control cycle ground generation driving actuator 21.For example, in a kind of embodiment, two piezo ceramic elements that are installed in the periphery hole 12 of left and right directions shown in Figure 5 serve as actuator 21, and two piezo ceramic elements that are installed in the periphery hole 12 of above-below direction serve as vibration transducer 22.Two piezo ceramic elements as actuator 21 are subjected to voltage to drive the generation displacement, promote vibration-transmitting plate 4 and make it to produce deformation.Two piezo ceramic elements as vibration transducer 22 are promoted to produce displacement by vibration-transmitting plate 4, thereby produce electric signal, and signal is kept the autovibration of vibrating tube 3 by gathering, process, amplifying two piezo ceramic elements giving again as actuator 21.
At least two actuators 21 periodically promote vibration-transmitting plate 4 synchronously, and the vibrating tube 3 of fluid property measurement device 100 can produce the vibration of various patterns.Fig. 6 and Fig. 7 show that the vibrating tube 3 according to the fluid property measurement device 100 of a kind of embodiment of the utility model produces the vibration sectional view of ring pattern (hoop mode) vibration.Fig. 6 is the moment that the piezo ceramic element of the left and right sides pushes away together, and at this moment, the size of the horizontal X of vibrating tube 3 shortens under the pushing effect of actuator; Relatively simultaneously, the size of vertical Y of vibrating tube 3 is elongated.Figure 7 shows that the piezo ceramic element of the left and right sides with the moment of contracting, because the pushing effect of actuator disappears, laterally the X size is elongated under the rebound effect of self for vibrating tube 3; Relatively simultaneously, the size of vertical Y of vibrating tube 3 shortens.In the fluid property measurement device 100 of this embodiment, utilize the oscillatory type principle to measure the density of fluid, and adopt the ring mode vibration pattern density measurement of this uniqueness, this ring mode vibration pattern is very responsive to the variation of density, can realize high-precision densitometer so demarcate on the basis accurately.
It will be apparent to one skilled in the art that if the frequency that two actuators 21 periodically promote vibration-transmitting plate 4 synchronously is enough high vibrating tube 3 will produce the similar up and down vibration of concertina type.The vibration mode of this similar up and down concertina type can also be used for measuring the viscosity of fluid.
Except ring pattern and the aforementioned similar up and down vibration mode of concertina type, also can realize other vibration modes according to the fluid property measurement device 100 of a kind of embodiment of the utility model.For example, Fig. 8 shows the synoptic diagram that produces the type vibration of vacillating now to the left, now to the right according to the fluid property measurement device 100 of a kind of embodiment of the utility model.As shown in Figure 8, when the actuator 21 on the right pushes away, actuator 21 contractings on the left side, vibrating tube 3 is to left swing to leftward position A; When the actuator 21 on the left side pushes away, actuator 21 contractings on the right, vibrating tube 3 is put right positions B to the right.About two actuators 21 asynchronous promotion vibration-transmitting plate 4 periodically, then vibrating tube 3 produces waggings.
The utility model also provides the method that adopts above-mentioned fluid property measurement device 100 to measure fluid densities, and it comprises: above-mentioned fluid property measurement device 100 is immersed in the measured fluid, and, according to the density p of following formula Fluid Computation:
ρ=A+B×T+C/F
In above-mentioned formula, A, B and C are respectively the coefficient of demarcating in advance.
When being immersed in fluid property measurement device 100 in the measured fluid, fluid enters submergence chamber 720 by the through hole 722 of the second housing 720, and enter in the hollow cavity of opening of vibrating tube 3, therefore vibrating tube 3 inside and outside has fluid, pressure does not have impact substantially on the frequency of vibrating tube 3, that is to say that 3 pairs of pressure of vibrating tube are insensitive.Utilize 3 pairs of insensitive characteristics of pressure of this vibrating tube, fluid property measurement device 100 of the present utility model can be immersed into any degree of depth of the detected fluid in the calibration range, can avoid the loaded down with trivial details work of taking a sample, and is easy to operate.
And, because fluid property measurement device of the present utility model 100 is simple in structure, therefore can make small and exquisitely and exquisite, for example, the probe size of fluid property measurement device 100 can be as small as 55 millimeters * 200 millimeters.Therefore, fluid property measurement device 100 is subjected to space constraint hardly, both can make portablely, also can make the pipeline that is installed to narrow space or the servo-type of tank interior.
In addition, the method for the utility model measurement fluid density has easy and simple to handle, measuring accuracy advantages of higher.
Above embodiment only is used for explanation the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that does not break away from scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (10)
1. the fluid property measurement device is characterized in that, it comprises:
Pedestal;
Actuator, it is installed on the described pedestal;
Be used for contacting the vibrating tube of measured fluid, it has open axially extended hollow cavity, and the near-end of described vibrating tube is fixed to described pedestal, radially extends vibration-transmitting plate from described vibrating tube, and described vibration-transmitting plate contacts described actuator;
Vibration transducer, it surveys the vibration frequency F of described vibrating tube; And
Controller, it controls described actuator makes described vibrating tube produce vibration by driving described vibration-transmitting plate regularly, and calculates the characteristic of described fluid in conjunction with the temperature T of described vibration frequency F and fluid.
2. fluid property measurement device according to claim 1, wherein, the characteristic of described fluid is density or viscosity.
3. fluid property measurement device according to claim 1, it also comprises the thermometer that is installed on the described pedestal, and described thermometer is at least part of to be extended in the hollow cavity of described vibrating tube, and described thermometer is surveyed described temperature T.
4. fluid property measurement device according to claim 1, wherein, described pedestal arranges center pit and at least two periphery holes, described at least two periphery holes be arranged on symmetrically described center pit around, described vibrating tube is installed in the described center pit, and at least two described actuators are respectively installed in the described periphery hole.
5. fluid property measurement device according to claim 4, it comprises four piezo ceramic elements, described pedestal arranges four periphery holes, described four piezo ceramic elements are respectively installed in the described periphery hole, at least one described piezo ceramic element serves as described actuator, and at least one described piezo ceramic element serves as described vibration transducer, and described controller control cycle ground generates the driving voltage that drives described actuator.
6. fluid property measurement device according to claim 1, wherein, the far-end of described vibrating tube overhangs, described vibrating tube inboard arranges the vibration isolation groove that the vibration that intercepts vibrating tube is transmitted from far-end to near-end, and described vibration-transmitting plate extends radially outwardly out and is connected at least in part the described far-end of described vibrating tube from described vibrating tube.
7. fluid property measurement device according to claim 1, wherein, the sheet that described vibration-transmitting plate is rounded, square or trapezoidal.
8. fluid property measurement device according to claim 1, wherein, described vibration-transmitting plate arranges through hole and/or reinforcement.
9. fluid property measurement device according to claim 1, it also comprises the first housing, and the circuit cabin of convection cell sealing is set in described the first housing, described controller is installed in the described circuit cabin.
10. fluid property measurement device according to claim 9, it also comprises second housing fixing with respect to described the first housing, described the second housing has the submergence chamber, and described submergence chamber is provided with the through hole that is communicated with extraneous fluid, and described vibrating tube is arranged in described submergence chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220350937 CN202814828U (en) | 2012-07-19 | 2012-07-19 | Fluid characteristic measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220350937 CN202814828U (en) | 2012-07-19 | 2012-07-19 | Fluid characteristic measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202814828U true CN202814828U (en) | 2013-03-20 |
Family
ID=47873687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220350937 Expired - Fee Related CN202814828U (en) | 2012-07-19 | 2012-07-19 | Fluid characteristic measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202814828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749266A (en) * | 2012-07-19 | 2012-10-24 | 青岛澳邦量器有限责任公司 | Fluid property measuring device and fluid density measuring method |
| CN104634702A (en) * | 2015-03-06 | 2015-05-20 | 合肥工业大学 | Probe for simultaneously measuring piezoelectric torsion-vibration viscosity, density and dielectric constant online |
-
2012
- 2012-07-19 CN CN 201220350937 patent/CN202814828U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749266A (en) * | 2012-07-19 | 2012-10-24 | 青岛澳邦量器有限责任公司 | Fluid property measuring device and fluid density measuring method |
| CN104634702A (en) * | 2015-03-06 | 2015-05-20 | 合肥工业大学 | Probe for simultaneously measuring piezoelectric torsion-vibration viscosity, density and dielectric constant online |
| CN104634702B (en) * | 2015-03-06 | 2018-05-22 | 合肥工业大学 | The online measuring probe simultaneously of a kind of piezoelectricity torsional oscillation formula viscosity, density and dielectric constant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202204632U (en) | Pressure sensor used for sensing pressure of process fluid and process control transducer | |
| CN102749266A (en) | Fluid property measuring device and fluid density measuring method | |
| RU2606931C1 (en) | Primary element with sensors for flow meter | |
| CN102232180B (en) | For adopting the tonometric method and apparatus of quartz crystal | |
| CN201653501U (en) | Magnetostriction liquid level meter | |
| CN102494670A (en) | Method for monitoring foundation settlement by using static water level gauge and static water level gauges used in method | |
| CN202814828U (en) | Fluid characteristic measurer | |
| CN201688894U (en) | Magnetostrictive level meter | |
| CN101408448B (en) | High-frequency high-precision water-level change meter | |
| CN201653466U (en) | Wet steam flow instrument | |
| CN101592513A (en) | Ocean engineering sink tank water level monitor | |
| CN205317300U (en) | Built -in liquid level measurement device | |
| CN201476817U (en) | Vortex flowmeter with integrated vibration resistant structure | |
| CN206974511U (en) | A kind of ultrasonic water level gauge for adapting to water level fluctuation | |
| CN101532867A (en) | Non-contact liquid level detecting device suitable for complex working conditions | |
| CN201600168U (en) | Anti-condensation static-pressure type liquid level transmitter | |
| CN209570248U (en) | A kind of throw-in type liquid transmitter | |
| CN103575450B (en) | Liquid pressure measurement diaphragm closure means, mechanical indicating pointer tensimeter and pressure unit | |
| CN102103003A (en) | Direct liquid level boundary indicator | |
| CN102279029A (en) | Self-calibrating putting-into-type pressure liquid level meter and measuring method thereof | |
| RU2604477C1 (en) | Device for measuring density and level of liquid | |
| JP2929159B2 (en) | Pressure type liquid level measuring device | |
| CN202133437U (en) | Self-calibration drop type pressure liquid level meter | |
| CN203274851U (en) | External non-contact measurement drum type ultrasonic level gauge | |
| CN111551232A (en) | Vacuum tube type temp. difference liquid level meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20160719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |