RU2422778C2 - Flow rate metre with multitude of flow tubes - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: flow rate metre (200) consists of: first flow tube (201) for first flow of medium with pair of first sensors (215, 215') attached to it, additional flow tube (202) for second flow of medium with pair of additional sensors (216, 216') attached to it, common exciter (220) generating first vibration response and additional vibration response in flow tubes (201, 202) correspondingly, and measuring electronic equipment receiving first and additional vibration responses and defining characteristics of first flow and characteristics of second flow from them.

EFFECT: simultaneous measurements of two independent flows of medium avoiding installation of two separate flow rate metres.

33 cl, 12 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a flowmeter and, in particular, relates to a flowmeter with many flow tubes.

State of the art

Vibration tube sensors, such as Coriolis mass flow meters and vibratory densitometers, typically operate by detecting the movement of a vibrating tube that contains fluid material. Characteristics associated with the material in the tube, such as mass flow, density, etc., can be determined by processing the measurement signals received from the motion transducers associated with the tube. The vibration modes filled with the vibrating material of the systems generally depend on the combined characteristics, including mass, stiffness and damping, of the tube itself and the material contained in it.

A typical Coriolis mass flow meter includes one or more tubes that are connected in a line in the form of a pipe channel or other transport system and carry material, such as liquids, suspensions, and the like. in system. We can assume that each tube has a setting of natural vibration modes, including, for example, the mode of flat bending, torsional, radial and conjugate modes. In a typical application of the Coriolis mass flow measurement, the tube is excited in one or more vibration modes when material flows through it, and the movement of the tube is measured at points dispersed along the tube. Excitation, as a rule, is provided by an actuator, for example, an electromechanical device, such as an exciter such as a voice coil, which applies periodic disturbance to the tube. Mass flow can be determined by measuring the time delay or phase differences between movements at the locations of the transducers. To measure the vibrational response of a flow tube or tubes, two such transducers (or sensors) are usually used, which are typically placed downstream and upstream of the actuator. Both of these sensors are connected to electronic measuring equipment using cables, for example, using two independent pairs of wires. The measuring equipment receives signals from two sensors and processes the signals to obtain mass flow measurement results.

Flowmeters are used to perform mass flow measurements of a wide variety of fluid flows. One area where Coriolis flowmeters could potentially be used is the measurement and distribution of fuels, including alternative fuels. The market for alternative fuels continues to expand due to the increasing problems of environmental pollution, as well as due to increasing problems regarding the cost and availability of unleaded gasoline and other traditional fuels. In fact, many governments have to obey legislation that encourages the use of alternative fuels.

The prospect for using Coriolis measuring instruments in the alternative fuel market is refueling vehicles such as cars, buses, and so on. Today, refueling of individual vehicles is carried out at gas stations where traditional gasoline pumps are used, or using a compressed natural gas metering device (CNG) for alternative fuels. Traditional gasoline dispensers require two separate and independent measuring devices so that two vehicles can be refueled at the same time. A dual fuel metering unit can measure two streams. These two streams can have different speeds. Also, these two streams may contain different materials (i.e., for example, two different types of fuel) and may have different densities.

However, to ensure the competitiveness of pump production in such a rapidly growing industry, it is necessary to minimize the total cost and size of the fuel pump for alternative fuels. Thus, there is the problem of developing an economical fuel flow meter that can provide two simultaneous measurements of fuel consumption in two independent streams.

One well-known approach is to install two separate flow meters on a single fuel metering device. Although this approach is quite workable, it has several disadvantages. Two measuring devices require twice the space in the fuel dispenser compared to one measuring device. Two measuring devices can double the cost of measurements in the fuel metering unit. Two measurement devices may require a doubling of electricity.

SUMMARY OF THE INVENTION

According to an embodiment of the present invention, a flow meter with a plurality of flow tubes is provided. A flowmeter with a plurality of flow tubes comprises a first flow tube conducting the first flow and a pair of first sensors attached to the first flow tube. A flow meter with a plurality of flow tubes further comprises at least one additional flow tube conducting at least one additional flow, and at least one pair of additional sensors attached to at least one additional stream tube. This at least one additional stream is independent of the first stream. A flow meter with a plurality of flow tubes further comprises a common exciter configured to vibrate both the first flow tube and at least one additional flow tube to create a first vibration response and at least one additional vibration response.

According to an embodiment of the invention, a measurement method is provided for a flowmeter with a plurality of flow tubes. The method comprises creating vibrations of a first flow tube conducting a first flow and vibrations of at least one additional flow tube. Vibration is created by a common pathogen. The method further comprises receiving a first vibrational response of the first flow tube, receiving at least one additional vibrational response of at least one additional flowing tube, and determining a characteristic of the first stream from the first vibrational response and at least one additional vibration response.

According to an embodiment of the invention, a measurement method is provided for a flowmeter with a plurality of flow tubes. The method comprises creating vibrations of a first flow tube conducting a first flow and vibrations of at least one additional flow tube conducting at least one additional flow. Vibration is created by a common pathogen. This at least one additional stream is independent of the first stream. The method further comprises receiving a first vibrational response of a first flow tube and receiving at least one additional vibrational response of at least one additional flow tube. The method further comprises determining a characteristic of the first stream from the first vibrational response and at least one additional vibrational response and determining at least one characteristic of the additional stream from the first vibrational response and at least one additional vibrational response.

According to an embodiment of the invention, a calibration method is provided for a flowmeter with a plurality of flow tubes. The method comprises zeroing a flow meter with a plurality of flow tubes and zeroing one or more control measuring instruments associated with a flow meter with a plurality of flow tubes. The method further comprises measuring a first flow through a first flow tube of a flow meter with a plurality of flow tubes using a flow meter with a plurality of flow tubes and using one or more control measuring instruments, and also measuring at least one additional flow through at least at least one additional flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control flax measuring instruments. The method further comprises determining two or more flow calibration coefficients (FCFs) for a flowmeter with multiple flow tubes using a first flow measurement and at least one additional flow measurement.

Aspects of the Invention

According to one aspect of the flowmeter, the flowmeter comprises a Coriolis flowmeter.

According to another aspect of the flowmeter, the flowmeter comprises a vibrating densitometer.

According to another aspect of the flowmeter, the first stream and at least one additional stream come from a common input.

According to a further aspect of the flow meter, the first stream comes from the first input, and at least one additional stream comes from the second input.

According to another aspect of the flowmeter, the flowmeter further comprises measuring electronics configured to vibrate the first flow tube and vibrate at least one additional flow tube, the vibration being carried out by a common pathogen, receiving a first vibrational response of the first flow tube, receiving at least , one additional vibrational response of the at least one additional flow tube and determining the characteristics of the first stream from the first vibration ion response and at least one additional vibrational response.

According to another aspect of the flow meter, the flow meter further comprises measuring electronics configured to vibrate the first flow tube and vibrate at least one additional flow tube, wherein at least one additional flow tube conducts at least one additional a stream, wherein the vibration is carried out by a common pathogen, and at least one additional stream is independent of the first stream, receiving the first vibrational response of the first stream cleansing, receiving at least one additional vibrational response of at least one additional flow tube, determining a characteristic of a first stream from a first vibrational response and at least one additional vibrational response and determining a characteristic of a second stream of at least one additional stream from the first vibrational response and at least one additional vibrational response.

According to a further aspect of the flowmeter, the flowmeter further comprises measuring electronics configured to determine the characteristics of the first stream and at least the characteristics of one additional stream using the first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to another aspect of the flowmeter, the flowmeter further comprises measuring electronics configured to determine the characteristics of the first stream and at least the characteristics of one additional stream using the first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to yet another aspect, the flow meter further comprises measuring electronics configured to zero a flow meter with a plurality of flow tubes for a calibration process, zero one or more control measuring instruments associated with a flow meter with a plurality of flow tubes, measure a first flow through a first flow tube of a flow meter with a plurality flow tubes using a flow meter with multiple flow tubes and using one or more control measures measuring instruments, measuring at least one additional flow through at least one additional flow tube of a flowmeter with a plurality of flow tubes using a flow meter with a plurality of flow tubes and using one or more control measuring instruments and determining two or more calibration factors ( FCF) flow for a flowmeter with multiple flow tubes using the measurement of the first stream and measuring at least one additional stream.

According to a further aspect of the flowmeter, the flowmeter further comprises measuring electronics configured to determine two or more flow calibration coefficients (FCFs) for a flowmeter with a plurality of flow tubes using the equation

According to another aspect of the flow meter, the flow meter further comprises measuring electronics configured to determine two or more calibration coefficients (FCF) of the flow for a flow meter with multiple flow tubes using the equation

.

.

According to one aspect of the method, the at least one additional flow tube has zero flow.

According to another aspect of the method, the at least one additional flow tube conducts at least one additional stream.

According to another aspect of the method, the first stream and at least one additional stream proceed from a common input.

According to a further aspect of the method, the first stream comes from the first input, and at least one additional stream comes from the second input.

According to another aspect of the method, the at least one additional stream tube conducts at least one additional stream that is independent of the first stream, the method further comprising determining at least one characteristic of the additional stream, at least one additional stream from the first vibrational response and at least one additional vibrational response.

According to a further aspect of the method, the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to another aspect of the method, the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to another aspect, the method further comprises zeroing the flow meter with multiple flow tubes for a calibration process, zeroing one or more control measuring instruments associated with a flow meter with multiple flow tubes, measuring a first flow through a first flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments, measurement of at least one additional flow through at least one additional flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments and determining two or more calibration coefficients (FCF) of the flow for a flow meter with multiple flow tubes using a measurement of the first stream and measuring at least one additional stream.

According to a further aspect of the method, the determination comprises determining two or more calibration coefficients (FCF) of a flow for a flowmeter with multiple flow tubes using the equation

.

.

According to another aspect of the method, the determination comprises determining two or more flow calibration coefficients (FCFs) for a flowmeter with multiple flow tubes using the equation

.

.

According to one aspect of the method, the first stream and at least one additional stream come from a common input.

According to a further aspect of the method, the first stream comes from the first input, and at least one additional stream comes from the second input.

According to a further aspect of the method, the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to another aspect of the method, the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

и

and

,

,

) первого потока и второй массовый расход (

) второго потока.to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream.

According to another aspect, the method further comprises zeroing the flow meter with multiple flow tubes for a calibration process, zeroing one or more control measuring instruments associated with a flow meter with multiple flow tubes, measuring a first flow through a first flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments, measurement of at least one additional flow through at least one additional flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments and determining two or more calibration coefficients (FCF) of the flow for a flow meter with multiple flow tubes using a measurement of the first stream and measuring at least one additional stream.

According to a further aspect, the definition comprises determining two or more flow calibration coefficients (FCFs) for a multiple flow tube flow meter using the equation

According to another aspect of the method, determining two or more coefficients (FCF) comprises determining two or more coefficients (FCF) using the equation

According to one aspect of the calibration method, the determination comprises determining two or more flow calibration coefficients (FCFs) for a multiple flow tube flow meter using the equation

According to one aspect of the calibration method, the determination comprises determining two or more flow calibration coefficients (FCFs) for a multiple flow tube flow meter using the equation

.

.

Brief Description of the Drawings

Figure 1 - flow meter containing the assembly of the flow meter and measuring electronics;

2 is a diagram of a flowmeter with multiple flow tubes, according to a variant of the invention;

3 is a flowchart of a measurement method for a flowmeter with multiple flow tubes, according to an embodiment of the invention;

4 is a diagram of a flowmeter with multiple flow tubes, according to a variant of the invention;

5 is a diagram of a flow meter with multiple straight tube flow tubes according to an embodiment of the invention;

6 is a flow meter with multiple flow tubes, according to a variant of the invention;

7 is a flow meter with many flow tubes, according to a variant of the invention;

Fig. 8 is a flow meter with a plurality of flow tubes in an initial calibration setup, according to an embodiment of the invention;

Fig. 9 is a flowmeter with a plurality of flow tubes in an initial calibration setup, according to an embodiment of the invention;

10 is a flowchart of a method for calibrating a flowmeter with multiple flow tubes according to an embodiment of the invention;

11 is a diagram of the initial calibration installation, according to a variant of the invention;

12 is a flow meter with multiple flow tubes according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

1-12 and in the following description, specific examples are described to give those skilled in the art how to implement and use the best embodiment of the invention. In order to assimilate the new principles of the invention, the presentation of certain known aspects has been simplified or omitted. Specialists in the art should be obvious resulting from the shown examples, options that are not beyond the scope of the present invention. It will also be apparent to those skilled in the art that the features described below can be combined in various ways to create many other variations of the invention. As a result, the invention is not limited to the specific options described below, but is limited only by the claims and their equivalents.

Figure 1 shows a flow meter 5 containing the assembly 10 of the flow meter and measuring electronics 20. The measuring electronics 20 are connected to the assembly 10 of the flow meter by means of electrical wires 100 that provide information on density, mass flow, volume flow, total mass flow, temperature and other information through line 26. Those skilled in the art will appreciate that the present invention can be used in any type of Coriolis flowmeter, regardless of the number of pathogens, sensors, flows x tubes or vibration of the working mode. In addition, it should be understood that the flowmeter 5 alternatively comprises a vibrating densitometer.

The flowmeter assembly 10 includes a pair of flanges 101 and 101 ', manifolds 102 and 102', a pathogen 104, sensors 105-105 ', and flow tubes 103A and 103B. The pathogen 104 and the sensors 105 and 105 'are connected to the flow tubes 103A and 103B.

Flanges 101 and 101 'are attached to manifolds 102 and 102'. The manifolds 102 and 102 'can be attached to opposite ends of the spacer 106. The spacer 106 maintains the distance between the manifolds 102 and 102' to prevent unwanted vibrations in the flow tubes 103A and 103B. When the flowmeter assembly 10 is inserted into a piping system (not shown) through which the measured material is transferred, the material enters the flowmeter assembly 10 through the flange 101, passes through the intake manifold 102, where the entire amount of material is directed to the input of the flow tubes 103A and 103B, flows through the flow tubes 103A and 103B and enter back into the exhaust manifold 102 ', where it leaves the flowmeter assembly 10 through the flange 101'.

The flow tubes 103A and 103B are selected and suitably mounted on the intake manifold 102 and the exhaust manifold 102 ′ so as to provide substantially the same distribution of masses, moments of inertia and elastic moduli with respect to the axes W-W and W′-W ′, respectively. The flow tubes exit outward from the collectors virtually in parallel.

The flow tubes 103A and 103B are excited by the pathogen 104 in opposite directions with respect to the respective bending axes W and W ', which is called the bending mode of the flowmeter with phase mismatch. Pathogen 104 may comprise one of many well-known configurations, for example, a magnet located on the flow tube 103A and an opposing coil located on the flow tube 103B. An alternating current passes through the opposite coil, causing vibrations of both tubes. The corresponding excitation signal is supplied from the measuring electronics 20 via an electric wire 110 to the exciter 104.

Measuring electronics 20 receives sensor signals through electrical wires 111 and 111 ', respectively. The meter electronics 20 generates an excitation signal on the wire 110, causing the pathogen 104 to cause vibrations of the flow tubes 103A and 103B. Measuring electronics 20 processes the speed signals to the left and right of the sensors 105 and 105 ', to calculate the mass flow rate. Channel 26 provides input and output means that allow the measurement electronics 20 to interact with an operator or other electronic system. The description of FIG. 1 is merely an example of the operation of a Coriolis flowmeter and does not imply a limitation of the idea underlying the present invention.

Figure 2 presents a diagram of a flow meter 200 with multiple flow tubes, according to a variant of the invention. The flow meter 200 includes a first flow tube 201 and at least one additional flow tube 202. Both flow tubes 201 and 201 include flanges 212 at the inlet and outlet ends. It should be understood that the flowmeter 200 with multiple stream tubes may include more than two stream tubes. However, for clarity, only two tubes are shown here. Through the flow meter 200, flow material may pass, including a first stream and at least one additional stream that is independent of the first stream.

A common pathogen 220 is located between the first flow tube 201 and the second flow tube 202, which causes the vibration of both flow tubes 201 and 202. If the flow meter 200 with many flow tubes includes more than two flow tubes, the number of pathogens will be one less than the number flow tubes due to the fact that the pathogen is used to vibrate at least two flow tubes.

The first flow tube 201 includes a pair of first sensors 215 and 215 'installed to detect vibration of the first flow tube 201. The first sensors 215 and 215' may be supported by some kind of rigid support structure (not shown), in which the sensor is held fixed position and measures the relative vibration movement of the corresponding flow tube. The second flow tube 202 includes a pair of second sensors 216 and 216 ′ mounted to detect vibration of the second flow tube 202 and also mounted on a support structure (not shown). The supporting structure for sensors 215 and 215 'may be the same or different from the supporting structure used for sensors 216 and 216'. When vibrating the flow tubes 201 and 202, the pair of the first sensors 215 and 215 'measures the flow characteristic for the first flow tube 201, and the pair of the second sensors 216 and 216' measures the flow characteristic for the second flow tube 202.

Measurements of the flow characteristics from a pair of first sensors 215 and 215 'and a pair of second sensors 216 and 216' are received and processed by measuring electronics 20 (see figure 1). The measurement electronics 20 may perform a first flow measurement related to the first stream, and may produce a second flow measurement related to the second stream. Processing may create, for example, mass flow rate and / or density measurements.

Another characteristic that can be created by processing is the viscosity value for each stream. If two flow tubes have different cross-sectional areas of the flow, then, for example, a flow meter 200 with multiple flow tubes may be configured to measure dynamic viscosity and deposition. By processing, you can also create other characteristics of the stream, which is included in the scope of the description and claims.

The first thread is independent of the second thread. As a result, the first stream is not associated with or is not influenced by the second stream, and vice versa. Consequently, the flow through each flow tube can be measured and controlled independently of the flow through the other tube.

In one embodiment, the first stream may have a flow rate different from the second stream. In one embodiment, the first stream may comprise a first stream material, and the second stream may comprise a second stream material. The first stream may have a first density, and the second stream may have a second density. For example, the first stream may comprise a first fuel, and the second stream may comprise a second fuel. Each fuel can flow at a different speed. Thus, the measurement electronics 20 can use the measurements of the first and second flows to conduct two independent measurement operations, for example, fuel.

In one embodiment, the flow tubes 201 and 202 comprise, as shown, substantially U-shaped flow tubes. In the alternative embodiment shown in FIG. 5 and discussed below, flow tubes 201 and 202 may comprise substantially straight flow tubes. However, you can use other forms, and they do not go beyond the scope of the description and claims.

In one embodiment, the first flow tube 201 has the same cross-sectional area as the second flow tube 202. Alternatively, they may have different cross-sectional areas.

FIG. 3 is a flowchart 300 of a measurement method for a flowmeter with multiple flow tubes according to an embodiment of the invention. This method can be used to measure flow only through the first flow tube, measure flow only through the second flow tube, or to measure flow simultaneously through both flow tubes: the first and second.

At step 301, the common pathogen 220 causes vibration of the first stream tube and the second stream tube. The first stream tube may conduct the first stream, and the second stream tube may conduct the second stream. In one embodiment, each flow tube has a separate set of sensors (see figure 2). Alternatively, the flow tubes share one set of sensors (see FIG. 4).

At 302, a first vibrational response of the first flow tube is received. The first vibrational response may comprise an electrical signal generated by a set of sensors, where the electrical signal refers to the first vibrational response. In the first flow tube, the first flow material flows. Therefore, the first vibrational response may include the vibrational response of the flow material in the first flow tube.

At step 303, a second vibrational response of the second flow tube is received. The second vibrational response may comprise an eclectic signal generated by a set of sensors, where the electrical signal refers to the second vibrational response. Thus, the second vibrational response may include the vibrational response of the flow material in the second flow tube, may include a non-flow vibrational response, or may include the vibrational response of an empty second flow tube.

) первого потокового материала. Дополнительно, из первого и, по меньшей мере, одного дополнительного вибрационных откликов можно определить плотность, вязкость и т.д. первого потокового материала.At 304, a characteristic of the first stream is determined. It should be understood that at this stage it is possible to determine more than one characteristic of the first stream. The characteristic of the first stream is determined from the first and at least one additional vibrational responses. The characteristic of the first stream may comprise a mass flow rate (

) first streaming material. Additionally, density, viscosity, etc., can be determined from the first and at least one additional vibrational responses. first streaming material.

) второго потокового материала. Дополнительно, из первого и, по меньшей мере, одного дополнительного вибрационных откликов можно определить плотность, вязкость и т.д. второго потокового материала.At step 305, the characteristic of the second stream of the at least one additional stream is determined. It should be understood that at this stage it is possible to determine more than one characteristic of at least one additional stream. The characteristic of the second stream is determined from the first and at least one additional vibrational responses. The characteristic of the second stream may comprise a mass flow (

) second streaming material. Additionally, density, viscosity, etc., can be determined from the first and at least one additional vibrational responses. second streaming material.

Although the flow through each flow tube is independent, the measurement of mass flow in one flow tube depends on the flow through the other tube. Flow through one tube shifts the phase in the other tube. Due to this connection, a new mass flow equation is used in the flow meter 200 with a plurality of flow tubes according to the invention. The new equations of the two flow tubes are based on the time delay occurring in both flow tubes 201 and 202 (i.e., Δt ₁ and Δt ₂ ).

) путем использования уравненияIn a known two-pipe Coriolis flowmeter, the phase between the two flow tubes is measured and the phase difference between the intake sensors and the exhaust sensors of the measuring device is calculated. This phase difference is converted into one time delay (Δt), which is used to determine the flow rate (e.g. mass flow

) by using the equation

In this equation, one measurement of time delay (Δt) can be used to measure flow. The time delay (Δt) is adjusted using the zero time delay (Δtz). Zero time delay (Δtz) contains the calibration factor determined in the absence of flow.

However, this well-known equation for mass flow is not adequate for a flowmeter with many flow tubes. The reason for this is that in the presence of two flow tubes, according to the invention, the flow creates a certain phase in both flow tubes. This is true even in cases where the flow flows in only one of the two flow tubes. In a known flow meter, due to the passage of a common flow through both flow tubes, the generated phase is the same in each tube. As a result, the created phase does not appear as a phase difference between the two tubes and does not affect the calculation of the result. Thus, in the prior art, one time delay can be used to determine the flow rate in a known flow meter.

In contrast, in the present invention, the first and second streams are independent. For this reason, the phase generated by both streams may differ in the two streams. Therefore, the mass flow equation based on one time delay cannot be used.

A stream in a flowmeter 200 with multiple flow tubes creates a phase in both flow tubes 201 and 202 even if the flow exists in only one of the flow tubes. These two phases created may differ from each other. As a result, flow measurement will require time delay measurements in each flow tube. Flow measurement can be carried out for one or two streams. This measurement pattern can be illustrated by the following equations

,

,

where the subscript 1 refers to the first stream tube, and the subscript 2 refers to the second stream tube. The second term in equations (2) and (3) (that is, for example, for the “2” term of FCF ₁₂ ) is necessary because the flow through one flow tube creates a phase in the other tube. Equations (2) and (3) can be used in measuring electronics 20 to determine the mass flow rates in both flow tubes 210 and 202.

) верхний индекс А обозначает, какая потоковая трубка проводит поток. Если поток проходит через вторую потоковую трубку 202, то тогда значение временной задержки будет выглядеть как (

). Нижний индекс В обозначает потоковую трубку, от которой принимают вибрационный отклик. Следовательно, значение (

) представляет временную задержку, измеренную для второй потоковой трубки, когда имеет место поток через первую потоковую трубку. В альтернативном варианте, значение (

) представляет собой временную задержку, измеренную для первой потоковой трубки, когда имеет место поток через вторую потоковую трубку 202. Нулевой верхний индекс обозначает состояние отсутствия потока, где значение (

) обозначает временную задержку, измеренную для первой потоковой трубки 201, когда общий возбудитель 220 вызывает вибрацию первой потоковой трубки в нулевом состоянии, то есть состоянии отсутствия потока.Further, for the time delay values in the form (

) The superscript A indicates which stream tube conducts the stream. If the stream passes through the second stream tube 202, then the time delay value will look like (

) The subscript B denotes a flow tube from which a vibrational response is received. Therefore, the value (

) represents the time delay measured for the second stream tube when there is flow through the first stream tube. Alternatively, the value of (

) represents the time delay measured for the first stream tube when there is a flow through the second stream tube 202. Zero superscript indicates a no flow state, where the value (

) denotes the time delay measured for the first stream tube 201, when the common pathogen 220 causes the first stream tube to vibrate in the zero state, that is, the state of no flow.

However, to determine the flow characteristics, a simpler form of equations (2) and (3) can be used. Equations (2) and (3) do not have symmetry. One possible type of symmetry is time delay symmetry. If the time delay is symmetrical, that is, if

,

,

then equations (2) and (3) are transformed into

Members of T represent temperature measurements. Member Tc ₁ represents the temperature of the first flow tube, and member Tm ₁ represents the temperature of the first flow fluid. Similarly, the term Tc ₂ represents the temperature of the second flow tube, and the term Tm ₂ represents the temperature of the second flow fluid. The value (Δtz ₁ ) is the zero flow calibration value for the first stream tube, and the value (Δtz ₂ ) is the zero flow calibration value for the second stream tube. Calibration Coefficients FCF ₁₁ , FCF ₁₂ , FCF _21, and FCF _{22 of the} flow represent calibration coefficients that are determined by test flow measurements and are then used to calibrate the flow characteristics.

In addition, calibration flow coefficients can also be symmetrical. In this case, equations (5) and (6) can be further simplified due to the fact that the calibration flow coefficients can be approximately symmetric, i.e., FCF ₁₂ ≈FCF ₂₁ . The symmetry of the equations affects the calibration process.

The ability to measure two mass flows also allows you to measure additional adjustable process parameters, and not just two mass flows. For example, if two flow tubes have different cross-sectional areas, then the ratio of these two flows may be related to dynamic viscosity. Another possible application may be the measurement of deposits on the inner surfaces of the flow tubes. Such deposits on the flow tubes create an uneven mass distribution in the system, and such an uneven mass distribution can be detected through the ratio of the amplitudes of the two resulting vibrational responses of the flow tubes. The above are just two examples of what can be done with a flow meter that measures two independent flows.

The calibration procedure for the well-known Coriolis single-flow meter represented by equation (1) is quite simple. Zero time delay (Δtz) is determined under zero flow conditions in a flowmeter 200 with multiple flow tubes, and the FCF value is determined by testing at a single flow rate.

From equations (2) (3), as well as (5) and (6), it can be seen that a similar strategy (measuring (Δtz) at zero and testing at a unit flow rate per tube) does not work in the case of a flowmeter with many flow tubes.

4 shows a flow meter 200 with multiple flow tubes according to an embodiment of the invention. Components matching the other figures are denoted by the same reference numerals. In this embodiment, only one pair of sensors 215 and 215 'is installed between the first and second flow tubes 201 and 202. A pair of sensors 215 and 215 'measures vibrations in both flow tubes, and each sensor 215 and 215' provides a signal relating to the time delay between the two flow tubes.

5 shows a flow meter 200 with a plurality of straight pipe flow tubes according to an embodiment of the invention. In this embodiment, the flow tubes 201 and 202 are essentially straight. It should be understood that the flow meter 200 of this embodiment may include two sets of sensors, as in FIG. 2, or include one set of sensors, as in FIG. 4.

6 shows a flow meter 200 with multiple flow tubes according to an embodiment of the invention. In this embodiment, the flow meter 200 includes a common inlet in the form of a flow divider 203. A flow divider 203 is connected to the first flow tube 201 and the second flow tube 202. In this embodiment, each flow tube has a pair of respective sensors 215 and 215 'and sensors 216 and 216', as previously discussed. Devices located downstream (not shown) may provide control or flow control.

7 shows a flow meter 200 with multiple flow tubes according to an embodiment of the invention. This embodiment includes a flow divider 203, as in FIG. 6. However, this option includes only one pair of sensors 215 and 215 '. As in FIG. 4, a pair of sensors 215 and 215 ′ measures simultaneously the vibrations of both flow tubes 201 and 202.

FIG. 8 shows a flowmeter 200 with multiple flow tubes during initial calibration setup 260, according to an embodiment of the invention. In this embodiment, where the multiple flow tube flow meter 200 has a separate inlet and a separate outlet, the first and second control meters 291 and 292 are used for the calibration process. The control meters 291 and 292 are flow meters that are used to accurately measure flow conditions where the test instrument is calibrated using measurements obtained from control instruments 291 and 292.

). Второй контрольный измерительный прибор 292 измеряет второй поток, протекающий через вторую потоковую трубку 202, и создает измеренное значение (

). Следовательно, поток через каждую потоковую трубку и соответствующий контрольный измерительный прибор отделен и не зависит от потока через другую потоковую трубку. Вдобавок, могут быть получены другие измерения потока.The first control measuring device 291 measures the first stream flowing through the first flow tube 201 and creates a measured value (

) A second reference meter 292 measures a second stream flowing through a second stream tube 202 and produces a measured value (

) Therefore, the flow through each flow tube and the corresponding control measuring device is separate and independent of the flow through the other flow tube. In addition, other flow measurements may be obtained.

The measurements obtained can be used to calibrate the flowmeter 200 with multiple flow tubes, according to various options. Possible calibration operations are discussed below, for example, in connection with FIG. 10. However, other calibration technologies are contemplated that do not go beyond the scope of the description and claims.

). Второй контрольный измерительный прибор 292 измеряет второй поток, протекающий через вторую потоковую трубку 202, и создает измеренное значение (

). Дополнительно начальная установка 260 калибровки может включать в себя контрольный измерительный прибор 293, который измеряет общий массовый расход (

), поступающий в расходомер 200 с множеством потоковых трубок.FIG. 9 shows a flow meter 200 with multiple flow tubes during initial calibration setup 260, according to an embodiment of the invention. In this embodiment, where the flow meter 200 has one inlet, the first and second control measuring devices 291 and 292 are connected to respective outlet openings of the first and second flow tubes 201 and 202. The flow through the first and second flow tubes 201 and 202 can be controlled downstream flow valves or other devices (not shown) that are connected to two outlet openings. As before, the first control measuring device 291 measures the first flow flowing through the first flow tube 201 and creates a measured value (

) A second reference meter 292 measures a second stream flowing through a second stream tube 202 and produces a measured value (

) Additionally, the initial calibration setup 260 may include a control meter 293 that measures the total mass flow (

) entering a flow meter 200 with a plurality of flow tubes.

FIG. 10 is a flowchart 1000 for a method for calibrating a multiple flow tube meter according to an embodiment of the invention. The basic equation for calibration contains

) и (

) для первой и второй потоковых трубок.At step 1001, a flow meter 200 with a plurality of flow tubes (i.e., the device under test, see FIGS. 8 and 9) is reset. At this point, both flow tubes 201 and 202 of the flow meter 200 are filled with fluid material, although flow through the flow meter 200 is prohibited. In flow tubes 201 and 202, vibration is generated in a non-flow state, and one or more flow characteristics, such as time delay values (

) and (

) for the first and second stream tubes.

=0), и выполняется операция обнуления, уравнение (7) приобретает видAt step 1001, where the flow is zero (mass flow

= 0), and the operation of zeroing is performed, equation (7) takes the form

At step 1002, the control meters 291 and 292 are reset to zero flow conditions, as has just been described. It should be understood that this step may be performed before or after step 1001.

) для первой потоковой трубки 201, когда поток проходит через первую потоковую трубку 201. Расходомер 200 измеряет временную задержку (

) для второй потоковой трубки 202, когда поток протекает через первую потоковую трубку 201, но не протекает через вторую потоковую трубку 202. Дополнительно, первый контрольный измерительный прибор 291 измеряет массовый расход потока через первую потоковую трубку 201 (то есть он создает значение REF₁). Для этапа 1003, когда поток создается в первой потоковой трубке, уравнение (7) принимает видIn step 1003, a flow is created only through the first flow tube 201. During the flow, both the flow meter 200 and the first control meter 291 measure the characteristics of the first flow. For example, flowmeter 200 may record a time delay (

) for the first flow tube 201, when the flow passes through the first flow tube 201. The flow meter 200 measures the time delay (

) for the second flow tube 202, when the flow flows through the first flow tube 201, but does not flow through the second flow tube 202. Additionally, the first control meter 291 measures the mass flow rate through the first flow tube 201 (that is, it creates a REF value of ₁ ) . For step 1003, when the flow is created in the first flow tube, equation (7) takes the form

) для второй потоковой трубки 202 при протекании потока через вторую потоковую трубку 202. Расходомер 200 измеряет временную задержку (

) для первой потоковой трубки 201 при протекании потока через вторую потоковую трубку 202 и отсутствии потока через первую потоковую трубку 201. Дополнительно, второй контрольный измерительный прибор 292 измеряет массовый расход потока через вторую потоковую трубку 202 (то есть он создает значение REF₂). Для этапа 1004, когда поток создается во второй потоковой трубке 202, уравнение (7)принимает вид:At step 1004, a stream is created through the second flow tube 202. During the flow, both the flow meter 200 with multiple flow tubes and the second control meter 292 measure the characteristics of the second stream. For example, a flow meter 200 measures a time delay (

) for the second flow tube 202 when flow flows through the second flow tube 202. The flow meter 200 measures the time delay (

) for the first flow tube 201 when flow flows through the second flow tube 202 and there is no flow through the first flow tube 201. Additionally, the second control meter 292 measures the mass flow rate through the second flow tube 202 (that is, it generates a REF value of ₂ ). For step 1004, when a stream is created in the second stream tube 202, equation (7) takes the form:

It should be noted that the values of REF ₁ and REF ₂ can be created by two different control measuring instruments (see Fig. 9). Alternatively, the values of REF ₁ and REF ₂ can be created at different points in time by one control measuring device (see Fig. 11).

At step 1005, various measurements of the flow characteristics obtained above are introduced into the (4 × 4) matrix (see equation (13) below). To invert calibration coefficients, FCF ₁₁ , FCF ₁₂ , FCF _21, and FCF _{22 of the} stream perform matrix inversion. These calibration flow coefficients are used for subsequent calculations of the flow characteristics, including determination in the normal operating mode of mass flow, density, viscosity, etc.

), (

), (

), (

), (

) и (

). Следует напомнить, что на этапе обнуленияThus, there are 4 equations with 4 unknowns. Known (i.e. measured) quantities are REF ₁ , REF ₂ , (

), (

), (

), (

), (

) and (

) It should be recalled that at the zeroing stage

Unknown quantities are calibration factors FCF ₁₁ , FCF ₁₂ , FCF ₂₁ and FCF ₂₂ flow. These FCFs are values that must be determined during the calibration process.

Then a 4 × 4 matrix equation can be compiled

Then perform the inversion of the 4 × 4 matrix

In another embodiment, the multiple flow tube meter 200 according to the invention may include more than two flow tubes. For example, a multiple flow tube flow meter 200 may include N stream tubes. The initial assumption is that the plurality of flow tubes behave essentially the same as in a measuring device having two flow tubes. For three flow tubes, the matrix equation has the form

Using the same notation system for this example with three flow tubes, we end up with nine unknowns (that is, the FCF matrix in Equation 14 above) requiring three different flow calibration points. At each calibration point, from three calibration points, measurements (Δt) are recorded along with three zero control flows (z).

Calibration point 1 contains

Calibration point 2 contains

Calibration point 3 contains

If we assume that all control calibration points are different, then we can assume, for example, that REF _ij = 0 for (i) not equal to (j), and we can assume that REF _ij = REF for (i = j). For example, this may lead to the assumption that REF ₁₂ = 0 and that REF ₂₂ (etc.) = C _REF .

This creates nine equations with nine unknown calibration factors. From these values, a matrix equation [9 × 9] can be constructed, which can be solved using the inverse of the matrix, as shown below

,

,

является матрицей [9×1],where is the member

is a matrix [9 × 1],

является матрицей [9×9]where is the member

is a matrix [9 × 9]

является матрицей [9×1].and where is the member

is a matrix [9 × 1].

In the general case, for N channels of the flow, the basic equation is as follows

Here, N calibration points will be required, which will lead to N ² equations with N ² unknowns that can be solved using matrix inversion

,

,

является матрицей [N²×1],where is the member

is a matrix [N ² × 1],

является матрицей [N²×N²]where is the member

is a matrix [N ² × N ² ]

является матрицей [N²×1].and where is the member

is the matrix [N ² × 1].

11 shows an initial calibration setup 1100 according to an embodiment of the invention. The initial calibration setup 1100 may include first and second valves 294a and 294b and one control meter 293. The first and second valves 294a and 294b may be adjusted to conduct a first flow through a first flow tube 210a, to conduct a second flow through a second flow tube 210b or to conduct a combined stream through both stream tubes 210a and 210b.

It is shown here that the control meter 293 is located after the flow meter 200 with three sensors and after the valves 294a and 294b. However, as shown by dashed lines, the control meter 293 (and / or valves 294a and 294b) can be placed upstream than the flow meter 200.

It should be understood that for the initial calibration setup 1100, the REF ₁ and REF ₂ values are generated by the control meter 293 at various points in time. For example, in the calibration process, a first flow through the first flow tube 210a is created by opening the first valve 294a and closing the second valve 294b. The control measurement created later by this control measuring device 293 is the value of REF ₁ . Then, the first valve 294a is closed and the second valve 294b is opened to create a second flow through the second flow tube 210b. The reference measurement created later by this reference meter 293 is the REF ₂ value.

12 shows a flow meter 200 with multiple flow tubes according to an embodiment of the invention. In this embodiment, each flow tube 210a-210n includes a separate input 212a-212n. However, all of the flow tubes 210a-210n are connected to a single output 213. Upstream of the individual inputs 212a-212n, valves may be provided for controlling flow through the flow tubes 210a-210n. As a result, a flow meter 200 with multiple flow tubes can reduce multiple flows into a single flow at a single output 213. The flowmeter 200 with multiple flow tubes can measure the individual components of the output stream.

In the invention, measurements of flow characteristics are obtained virtually simultaneously for two or more independent streams. Unlike the prior art, the pathogen causes vibrations of two or more flow tubes that conduct two or more independent flows. Unlike the prior art, streams can have different flow rates. Unlike the prior art, streams can have different densities. Unlike the prior art, flow tubes may have different cross-sectional areas. Unlike the prior art, a flow meter according to the invention may include a plurality of flow tubes. In contrast to the prior art, the flow meter can share pathogens, excluding at least one pathogen.

The advantage is that the cost of the flowmeter will be lower due to the sharing of components. Additionally, the overall dimensions of the flowmeter (and the entire measuring / distribution system) can be reduced. Additionally, sharing a common pathogen can reduce energy consumption and allows the use of a single power source of lower power.

Claims (33)

1. A flow meter (200) with a plurality of flow tubes, comprising:
a first flow tube (201) conducting the first stream;
a pair of first sensors (215, 215 ') attached to the first flow tube (201);
at least one additional flow tube (202) conducting at least one additional stream that is independent of the first stream, the first stream containing a stream of first material, and at least one additional stream containing a stream of second material ;
at least one pair of additional sensors (216, 216 ') attached to at least one additional flow tube (202); and
at least one common pathogen (220) configured to generate vibrations as a first flow tube (201) conducting a flow of first material,
and at least conductive flow of the second material of the additional flow tube (202) to create a first vibrational response and at least one additional vibrational response,
measuring electronics (20), configured to receive a first vibrational response of the first material flow conducting stream of the first flow tube (201),
receiving at least one additional vibrational response of the at least one second conductive stream of the second material of the additional flow tube (202) and determining the characteristics of the first stream for the first stream from the first vibrational response and at least one additional vibrational response. 2. A flowmeter (200) according to claim 1, wherein the flowmeter (200) comprises a Coriolis flowmeter. 3. A flow meter (200) according to claim 1, wherein the flow meter (200) comprises a vibrating densimeter. 4. The flow meter (200) according to claim 1, in which the first stream and at least one additional stream come from a common input. 5. The flow meter (200) according to claim 1, in which the first stream comes from the first input, and at least one additional stream comes from the second input. 6. The flow meter (200) according to claim 1, containing measuring electronics (20), configured to generate vibrations of the first flow tube (201) and vibrations of at least one additional flow tube (202), at least one common pathogen (220). 7. The flow meter (200) according to claim 6, containing measuring electronics (20), configured to create vibrations of the first flow tube (201) and vibrations of at least one additional flow tube (202), at least one additional flow tube (202) conducts at least one additional flow, while vibration is carried out by at least one common pathogen (220) and at least one additional flow is independent of the first flow, reception first vibrational response first streaming th tube (201), receiving at least one additional vibrational response of at least one additional flowing tube (202), determining the characteristics of the first stream for the first stream from the first vibrational response and at least one additional vibrational response and determining the characteristics of the second stream for at least one additional stream from the first vibrational response and at least one additional vibrational response. 8. The flow meter (200) according to claim 1, containing measuring electronics (20), configured to determine the characteristics of the first stream and the characteristics of at least one additional stream using the first vibrational response and at least one additional vibrational response in the equations

and

,
to determine the first mass flow (

) the first stream and the second mass flow (

) of the second stream, where the term

is the mass flow rate in tube 1 (tube (201)), member

is the mass flow rate in tube 2 (tube (202)), FCF member ₁₁ is the calibration flow coefficient for flow in tube 1 when it vibrates, FCF member ₁₂ is the calibration flow coefficient for flow in tube 1 when vibration is in tube 2, FCF member ₂₁ is calibration coefficient of flow for flow in tube 2 during vibration of tube 1, FCF member ₂₂ is the calibration coefficient of flow for flow in tube 2 when vibrate, term Δt ₁₁ is the time delay value for flow in tube 1 during its vibration, term Δt ₁₂ is the value delay and the time for the flow in the tube 1 when the vibration of the tube 2, a member of Δt ₂₁ is the value of time delay for a flow in the tube 2 during the vibration of the tube 1, a member of Δt ₂₂ is the value of time delay for a flow in the tube 2 during its vibration, Δtz ₁₁ members is a value calibration at zero flow for flow in tube 1 when it is vibrating, member Δtz ₁₂ is the calibration value for zero flow for flow in tube 1 when vibrating tube 2, member Δtz ₂₁ is the calibration value at zero flow for flow in tube 2 when vibrating tube 1 , the member Δtz ₂₂ is When calibrating at zero flow for a flow in tube 2 during its vibration, the term Tc ₁ is the temperature of the first flow tube, the term Tm ₁ is the temperature of the first flow fluid, the term Tc ₂ is the temperature of the second flow tube, and the term Tm ₂ is the temperature of the second flow fluid. 9. The flow meter (200) according to claim 1, containing measuring electronics (20), configured to determine the characteristics of the first stream and the characteristics of at least one additional stream using the first vibration response and at least one additional vibration response in the equations

and

,
to determine the first mass flow

first flow and second mass flow

second stream. 10. The flow meter (200) according to claim 1, containing measuring electronics (20), configured to zero the flow meter (200) with a plurality of flow tubes for the calibration process, zeroing one or more control measuring instruments (291-294) associated with the flow meter (200) with a plurality of flow tubes, measuring a first flow through a first flow tube (201) of a flow meter (200) with a plurality of flow tubes using a flow meter (200) with a plurality of flow tubes and using one or more control measures instruments (291-294), measuring at least one additional flow through at least one additional flow tube (202) of a flow meter (200) with a plurality of flow tubes using a flow meter (200) with a plurality of flow tubes and using one or more control measuring instruments (291-294) and determining two or more calibration coefficients (FCF) of the flow for a flow meter (200) with a plurality of flow tubes using the measurement of the first flow and measuring at least one additional body stream. 11. The flow meter (200) according to claim 10, containing measuring electronics (20), configured to determine two or more calibration coefficients (FCF) of the flow for the flow meter (200) with many flow tubes using the equation

where is the member

is the value of the time delay for the flow in the tube 1 during its vibration, member

is the value of the delay time for the flow in the tube 1 with vibration of the tube 2, member

is the time delay value for the flow in the tube 2 during vibration of the tube 1, member

a delay time value for the flow in the tube 2 during its vibration member z ₁ is the calibration value at zero flow for the pipe 1, the member z ₂ is the calibration value at zero flow for the tube 2, a member REF ₁ is the measured mass flow rate value for the tube 1 and REF ₂ is the measured mass flow rate for tube 2. 12. The flow meter (200) according to claim 10, containing measuring electronics (20), configured to determine two or more calibration coefficients (FCF) of the flow for the flow meter (200) with many flow tubes using the equation

where is the member

is mass flow in tube N, member FCF _1N is the calibration flow coefficient for flow in tube 1 during vibration of tube N, member FCF _N1 is the calibration flow coefficient for flow in tube N during vibration of tube 1, member FCF _NN is calibration flow coefficient for flow in the tube N during its vibration, the term Δt _N is the time delay value for the tube N, the term z _N is the calibration value at zero flow for the tube N. 13. A measurement method for a flow meter with multiple flow tubes, comprising stages in which:
create a vibration of the first stream tube conducting the first stream, and a vibration of at least one additional stream tube conducting at least one additional stream, which is independent of the first stream,
moreover, the first stream contains a stream of the first material, and at least one additional stream contains a stream of a second material, and the vibration is carried out by at least one common pathogen;
accepting a first vibrational response of the first material conducting stream of the first flow tube;
take at least one additional vibrational response of at least one conductive stream of the second material of the additional flow tube; and
determine the characteristic of the first stream of the first material from the first vibrational response and at least one additional vibrational response. 14. The method according to item 13, in which at least one additional stream tube has a zero flow. 15. The method according to item 13, in which the first stream and at least one additional stream come from a common input. 16. The method according to item 13, in which the first stream comes from the first input, and at least one additional stream comes from the second input. 17. The method according to item 13, in which at least one additional stream tube conducts at least one additional stream, which is independent of the first stream, and the method further comprises determining at least one characteristic, according to at least one additional stream from the first vibrational response and at least one additional vibrational response. 18. The method according to item 13, in which the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

and

,
to determine the first mass flow

first flow stream and second mass flow

second stream flow. 19. The method according to item 13, in which the definition further comprises the use of a first vibrational response and at least one additional vibrational response in the equations

and

,
to determine the first mass flow rate

first flow and second mass flow

second stream. 20. The method according to item 13, further comprising stages in which:
zeroing a flow meter with multiple flow tubes for the calibration process;
zeroing one or more control measuring devices associated with a flowmeter with multiple flow tubes;
measuring a first flow through a first flow tube of a flowmeter with a plurality of flow tubes using a flowmeter with a plurality of flow tubes and using one or more control measuring instruments;
measuring at least one additional flow through at least one additional flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments; and
determining two or more calibration coefficient (FCF) of the flow for a flowmeter with multiple flow tubes using the measurement of the first flow and measuring at least one additional stream. 21. The method according to claim 20, where the determination comprises determining two or more calibration coefficients (FCF) of the flow for a flow meter with multiple flow tubes using the equation

. 22. The method according to claim 20, where the determination comprises determining two or more calibration coefficients (FCF) of the flow for a flow meter with multiple flow tubes using the equation

. 23. A measurement method for a flow meter with multiple flow tubes, comprising stages in which:
create a vibration of the first stream tube conducting the first stream, and a vibration of at least one additional stream tube conducting at least one additional stream, which is independent of the first stream, the first stream containing the stream of the first material, and, at least one additional stream contains a stream of second material, and the vibration is carried out by at least one common pathogen;
accepting a first vibrational response of the first material conducting stream of the first flow tube;
take at least one additional vibrational response of at least one conductive stream of the second material of the additional flow tube; and
determining a characteristic of the first stream of the first material from the first vibrational response and at least one additional vibrational response; and
determine the characteristic of at least one additional stream of the second material from the first vibrational response and at least one additional vibrational response. 24. The method according to item 23, in which the first stream and at least one additional stream come from a common input. 25. The method according to item 23, in which the first stream comes from the first input, and at least one additional stream comes from the second input. 26. The method according to item 23, in which the definition includes the use of the first vibrational response and at least one additional vibrational response in the equations

and

,
to determine the first mass flow rate

first flow and second mass flow

second stream. 27. The method according to item 23, in which the definition includes the use of the first vibrational response and at least one additional vibrational response in the equations

and

,
to determine the first mass flow rate (

) the first stream and the second mass flow (

) of the second stream. 28. The method according to item 23, further comprising stages, in which:
zeroing a flow meter with multiple flow tubes for the calibration process;
zeroing one or more control measuring devices associated with a flowmeter with multiple flow tubes;
measuring a first flow through a first flow tube of a flowmeter with a plurality of flow tubes using a flowmeter with a plurality of flow tubes and using one or more control measuring instruments;
measuring at least one additional flow through at least one additional flow tube of a flow meter with multiple flow tubes using a flow meter with multiple flow tubes and using one or more control measuring instruments; and
determining two or more calibration coefficient (FCF) of the flow for a flowmeter with multiple flow tubes using the measurement of the first flow and measuring at least one additional stream. 29. The method of claim 28, wherein the determination comprises determining two or more flow calibration coefficients (FCFs) for a flowmeter with multiple flow tubes using the equation

. 30. The method according to p, in which the determination of two or more coefficients (FCF) comprises determining two or more coefficients (FCF) using the equation

. 31. A calibration method for a flow meter with multiple flow tubes, comprising stages in which:
resetting a flowmeter with multiple flow tubes;
zeroing one or more control measuring devices associated with a flowmeter with multiple flow tubes;
measuring a first flow through a first flow tube of a flowmeter with a plurality of flow tubes using a flow meter with a plurality of flow tubes and using one or more control measuring instruments;
measure at least one additional flow through at least one additional flow tube of a flowmeter with many flow tubes using a flow meter with many flow tubes and using one or more control measuring instruments, this at least one additional the stream is independent of the first stream, wherein the first stream contains a stream of first material, and at least one additional stream contains a stream of second material, wherein tsya, at least one common exciter; and
determining two or more calibration coefficient (FCF) flows for a flowmeter with multiple flow tubes using a measurement of a first flow of a first material and measuring at least one additional flow of a second material. 32. The method according to p, in which the determination comprises determining two or more calibration coefficients (FCF) of the flow for the flow meter with many flow tubes using the equation

. 33. The method according to p, in which the determination comprises determining two or more calibration coefficients (FCF) of the flow for the flow meter with many flow tubes using the equation

.

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