CN212364344U - Flow rate detection device and ultrasonic flowmeter - Google Patents

Abstract

The utility model relates to a flow detection device and ultrasonic flowmeter. The ultrasonic flow meter includes: installation body, ultrasonic detection mechanism, be equipped with discharge orifice and installation department on the installation body, the discharge orifice is used for the water source to flow through, ultrasonic detection mechanism installs on the installation body, just ultrasonic detection mechanism's sense terminal stretches into the discharge orifice, ultrasonic detection mechanism is used for detecting the velocity of flow at water source, the installation department with the discharge orifice is linked together, just the installation department is located one side that ultrasonic detection mechanism rivers flow through, the installation department is used for placing pressure sensor. Above-mentioned ultrasonic flowmeter has realized installing pressure sensor through the installation department, has realized assembling when ultrasonic detection mechanism and pressure sensor promptly for ultrasonic flowmeter is more convenient to the detection at water source.

Description

Flow rate detection device and ultrasonic flowmeter

Technical Field

The utility model relates to an ultrasonic flow detection's technical field especially relates to flow detection device and ultrasonic flowmeter.

Background

The flow rate of the water source may be detected by an ultrasonic flow meter, but the water pressure of the water source may be considered when detecting the flow rate of the water source, so that the water source may be detected by a pressure sensor. At present, the traditional mode is that ultrasonic flowmeter and pressure sensor are adopted to detect the water source alone, and ultrasonic flowmeter and pressure sensor can't install the cooperation promptly to lead to traditional mode very inconvenient when detecting the water source.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to solve the problem of inconvenience in detecting the water source in the conventional manner. Provided are a flow rate detection device and an ultrasonic flow meter.

An ultrasonic flow meter. The ultrasonic flow meter includes: installation body, ultrasonic detection mechanism, be equipped with discharge orifice and installation department on the installation body, the discharge orifice is used for the water source to flow through, ultrasonic detection mechanism installs on the installation body, just ultrasonic detection mechanism's sense terminal stretches into the discharge orifice, ultrasonic detection mechanism is used for detecting the velocity of flow at water source, the installation department with the discharge orifice is linked together, just the installation department is located one side that ultrasonic detection mechanism rivers flow through, the installation department is used for placing pressure sensor.

The utility model provides a flow detection device, includes ultrasonic flowmeter, still includes, pressure sensor passes through the installation department is installed ultrasonic flowmeter is last.

In one embodiment, the ultrasonic detection mechanism comprises a signal processing part, a first probe part, a second probe part, a first reflecting part and a second reflecting part, wherein the first probe part and the second probe part are electrically connected with the signal processing part, the first reflecting part and the second reflecting part are arranged inside the overflowing hole at intervals, a first mounting hole and a second mounting hole are arranged on the mounting body at intervals, the first probe part passes through the first mounting hole and is fixed on the mounting body, the sensing end of the first probe part faces the first reflecting part, the second probe part passes through the second mounting hole and is fixed on the mounting body, and the sensing end of the second probe part faces the second reflecting part.

In one embodiment, the ultrasonic flowmeter further includes a first seal ring and a second seal ring, the first seal ring is sleeved in the first mounting hole, the first probe member extends into the first mounting hole to be in interference fit with the first seal ring, the first seal ring is sleeved in the first mounting hole, and the second probe member extends into the second mounting hole to be in interference fit with the second seal ring.

In one embodiment, the ultrasonic detection mechanism further comprises a fixing plate, the fixing plate is hung in the overflowing hole, a first fixing groove and a second fixing groove are formed in the fixing plate, the first reflecting member is mounted on the fixing plate through the first fixing groove, and the second reflecting member is mounted on the fixing plate through the second fixing groove.

In one embodiment, the ultrasonic flow meter further includes a first connecting member and a second connecting member, the first connecting member and the second connecting member are both mounted on the fixing plate, the first connecting member is located in the first fixing groove, the first reflecting member is obliquely disposed on the fixing plate through the first connecting member, the second connecting member is located in the second fixing groove, and the second reflecting member is obliquely disposed on the fixing plate through the second connecting member.

In one embodiment, the ultrasonic flow meter further comprises a flow stabilizer plate mounted on the fixing plate.

In one of them embodiment, the installation department includes installation sleeve and third sealing washer, the installation sleeve is installed the surface of installation body, the assembly mouth has been seted up on the installation sleeve, the alignment hole is seted up on the surface of installation body, one of them drill way in alignment hole with the inside of installation sleeve is linked together, another drill way in alignment hole with the discharge orifice is linked together, the third sealing washer is installed inside the installation sleeve, the pressure sensor cover is established the inside of installation sleeve, pressure sensor with the conflict cooperation of third sealing washer, pressure sensor's response end with the pore wall in alignment hole is inconsistent.

In one embodiment, the side wall of the alignment hole is provided with alignment threads, and the alignment threads are matched with the sensing end threads of the pressure sensor.

In one embodiment, the mounting sleeve includes a first sub-barrel and a second sub-barrel, the first sub-barrel is movably sleeved outside the second sub-barrel, the end of the first sub-barrel is provided with the assembling port, the second sub-barrel is connected with the mounting body, the inside of the first sub-barrel and the inside of the second sub-barrel are both communicated with the alignment hole, and the pressure sensor can be sleeved inside the first sub-barrel and the second sub-barrel.

When the ultrasonic flowmeter is used, firstly, the opening area of the overflowing hole is determined according to the water quantity of the measured water source area, namely, the water source is ensured not to generate flow speed change when passing through the overflowing hole (for example, if the diameter of the orifice of the overflowing hole is too small, the flow speed change can occur due to the influence of water pressure when the water source enters the overflowing hole, and the difference exists between the flow speed of the water source measured by the ultrasonic flowmeter and the real flow speed of the measured water source area). At this moment, ultrasonic detection mechanism detects the water source that flows through the discharge orifice, will the installation department is established and is located ultrasonic detection mechanism rivers flow through one side, avoids rivers to receive pressure sensor's the influence that blocks before flowing through ultrasonic detection mechanism (namely pressure sensor can stretch into sometimes and exert an influence to rivers in the water source) to ultrasonic flowmeter's measurement accuracy has been guaranteed. The water source can pass through pressure sensor after ultrasonic detection mechanism, and pressure sensor alright carry out water pressure detection to the downthehole water source that overflows this moment. Above-mentioned ultrasonic flowmeter has realized installing pressure sensor through the installation department, has realized assembling when ultrasonic detection mechanism and pressure sensor promptly for ultrasonic flowmeter is more convenient to the detection at water source.

Above-mentioned flow detection device installs pressure sensor on ultrasonic flowmeter through the installation department when using, has realized assembling when ultrasonic detection mechanism and pressure sensor promptly, and the water source can pass through pressure sensor after ultrasonic detection mechanism, and pressure sensor alright carry out water pressure detection with the water source that overflows downthehole this moment, even make ultrasonic flowmeter more convenient to the detection at water source.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an ultrasonic flow meter;

fig. 2 is a partial structural view of a fixing plate.

100. The mounting structure comprises a mounting body, 110, an overflowing hole, 120, a mounting part, 121, a mounting sleeve, 130, a first mounting hole, 140, a second mounting hole, 200, a first reflecting piece, 300, a second reflecting piece, 400, a fixing plate, 410, a first connecting piece, 420 and a flow stabilizing plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and 2, in one embodiment, the ultrasonic flow meter comprises: installation body 100, ultrasonic detection mechanism, be equipped with discharge orifice 110 and installation department 120 on installation body 100, discharge orifice 110 is used for the water source to flow through, ultrasonic detection mechanism installs installation body 100 is last, just ultrasonic detection mechanism's sense terminal stretches into discharge orifice 110, ultrasonic detection mechanism is used for detecting the velocity of flow at water source, installation department 120 with discharge orifice 110 is linked together, just installation department 120 is located one side that ultrasonic detection mechanism rivers flow through, installation department 120 is used for placing pressure sensor.

When the ultrasonic flowmeter is used, firstly, the opening area of the overflowing hole 110 is determined according to the water amount of the measured water source area, namely, the water source is ensured not to generate flow rate change when passing through the overflowing hole 110 (for example, if the diameter of the opening of the overflowing hole 110 is too small, the flow rate of the water source can be changed due to the influence of water pressure when the water source enters the overflowing hole 110, and the flow rate of the water source measured by the ultrasonic flowmeter is different from the real flow rate of the measured water source area). At this moment, the ultrasonic detection mechanism detects the water source that flows through discharge orifice 110, will installation department 120 establishes and is located the one side that ultrasonic detection mechanism rivers flow through avoids rivers to receive pressure sensor's the influence of blockking before flowing through ultrasonic detection mechanism (namely pressure sensor can stretch into sometimes and exert an influence to rivers in the water source) to ultrasonic flowmeter's measurement accuracy has been guaranteed. The water source passes through the pressure sensor after passing through the ultrasonic detection mechanism, and at the moment, the pressure sensor can detect the water pressure of the water source in the overflowing hole 110. Above-mentioned ultrasonic flowmeter has realized installing pressure sensor through installation department 120, has realized assembling ultrasonic detection mechanism and pressure sensor's while promptly for ultrasonic flowmeter is more convenient to the detection of water source.

As shown in fig. 1, in an embodiment, the ultrasonic detection mechanism includes a signal processing element, a first probe element, a second probe element, a first reflecting element 200 and a second reflecting element 300, the first probe element and the second probe element are both electrically connected to the signal processing element, the first reflecting element 200 and the second reflecting element 300 are installed in the overflowing hole 110 at intervals, the installation body 100 is provided with a first installation hole 130 and a second installation hole 140 at intervals, the first probe element is fixed on the installation body 100 through the first installation hole 130, a sensing end of the first probe element faces the first reflecting element 200, the second probe element is fixed on the installation body 100 through the second installation hole 140, and a sensing end of the second probe element faces the second reflecting element 300.

Specifically, the signal processing part is a signal processing circuit board or a signal processor. The first probe piece and the second probe piece are both ultrasonic probes or ultrasonic sensors. The first reflecting member 200 and the second reflecting member 300 are both detection plates or detection blocks. The signal processing unit is mounted on the surface of the mounting body 100, and the signal processing unit can process signals fed back by the first probe unit and the second probe unit. Further, the sensing end of the first probe member faces the first reflecting member 200, and the sensing end of the second probe member faces the second reflecting member 300, so that when a water source flows through the flow hole 110, the water source can flood the first reflecting member 200 and the second reflecting member 300. When the first probe member and the second probe member are in an operating state or an energized state, the first probe member transmits a first ultrasonic signal to the first reflecting member 200, and the second probe member transmits a second ultrasonic signal to the second reflecting member 300. The signal processing member may calculate a difference between a time when the first ultrasonic signal reaches the first reflecting member 200 (a time taken for the first probe member to emit the ultrasonic signal to the first reflecting member 200) and a time when the second ultrasonic signal reaches the second reflecting member 300 (a time taken for the second probe member to emit the ultrasonic signal to the second reflecting member 300). The flow rate of the water source through the flowbore 110 can then be calculated according to the time-difference principle. Further, the water source should be ensured to completely fill the overflowing hole 110 when flowing through the overflowing hole 110, that is, the water source can completely submerge the first reflecting member 200 and the second reflecting member 300. The embodiment ensures that the ultrasonic signals emitted by the first probe piece and the second probe piece only pass through the medium of a water source, and greatly improves the detection accuracy of the ultrasonic flowmeter.

In one embodiment, the ultrasonic flow meter further includes a first sealing ring and a second sealing ring, the first sealing ring is sleeved in the first mounting hole 130, the first probe member extends into the first mounting hole 130 to be in interference fit with the first sealing ring, the first sealing ring is sleeved in the first mounting hole 130, and the second probe member extends into the second mounting hole 140 to be in interference fit with the second sealing ring. Specifically, after the signal processing element is mounted on the mounting body 100, the first mounting hole 130 and the second mounting hole 140 are respectively located at two sides of the signal processing element. Further, the first sealing ring improves the sealing performance between the first probe member and the first mounting hole 130, and the second sealing ring improves the sealing performance between the second probe member and the second mounting hole 140. This is only one example and the sealing ring may also be replaced by an elastic thread. That is, a first elastic thread is provided on the sidewall of the first mounting hole 130, and a second elastic thread is provided on the sidewall of the second mounting hole 140.

In one embodiment, the ultrasonic flow meter further includes a first auxiliary sleeve and a second auxiliary sleeve, the first auxiliary sleeve is mounted on the mounting body 100, and the first auxiliary sleeve is communicated with the first mounting hole 130. The second auxiliary sleeve is mounted on the mounting body 100, and the second auxiliary sleeve is communicated with the second mounting hole 140. The first auxiliary sleeve and the second auxiliary sleeve both protrude from the mounting body 100, and the first probe piece may be firstly sleeved inside the first auxiliary sleeve and then further extend into the first mounting hole 130. The second probe piece may be sleeved inside the second auxiliary sleeve, and then further extend into the second mounting hole 140. Such an embodiment is effective to improve the fixing of the first and second probe members to the mounting body 100, as compared to a method of directly inserting the first probe member into the first mounting hole 130 (and the second probe member into the second mounting hole 140).

As shown in fig. 1, in one embodiment, the ultrasonic testing apparatus further includes a fixing plate 400, the fixing plate 400 is hung in the overflowing hole 110, a first fixing groove and a second fixing groove are formed in the fixing plate 400, the first reflecting member 200 is mounted on the fixing plate 400 through the first fixing groove, and the second reflecting member 300 is mounted on the fixing plate 400 through the second fixing groove. Specifically, after the fixing plate 400 is installed in the overflowing hole 110, the long side direction of the fixing plate 400 is consistent with the axial direction of the overflowing hole 110, so that the resistance of the fixing plate 400 to the water source when the water source flows through the overflowing hole 110 can be effectively reduced.

As shown in fig. 1 and 2, in one embodiment, the ultrasonic flow meter further includes a first connector 410 and a second connector, the first connector 410 and the second connector are both mounted on the fixing plate 400, the first connector 410 is located in the first fixing groove, the first reflector 200 is obliquely disposed on the fixing plate 400 through the first connector 410, the second connector is located in the second fixing groove, and the second reflector 300 is obliquely disposed on the fixing plate 400 through the second connector. Specifically, the first connecting member 410 and the second connecting member are connecting rods or connecting plates. When the ultrasonic flowmeter performs measurement, the first reflecting member 200 and the second reflecting member 300 need to ensure a certain inclination angle on the fixing plate 400. Accordingly, the fixing of the first reflecting member 200 on the fixing plate 400 at a specific angle (inclination angle) is achieved by the first connecting member 410, and the fixing of the second reflecting member 300 on the fixing plate 400 at a specific angle (inclination angle) is achieved by the second connecting member. In this embodiment, the first connector 410, the second connector, the first reflector 200, the second reflector 300 and the fixing plate 400 may be integrally formed.

As shown in fig. 1 and 2, in one embodiment, the ultrasonic flow meter further includes a flow stabilizer 420, and the flow stabilizer 420 is mounted on the fixing plate 400. In particular, the flow of water in the overflowing hole 110 can be ensured to be smoother by the stabilizing plate 420, that is, the detection effect of the ultrasonic flowmeter on the water source is ensured.

As shown in fig. 1, in an embodiment, the mounting portion 120 includes a mounting sleeve 121 and a third sealing ring, the mounting sleeve 121 is installed on the surface of the mounting body 100, an assembly opening is opened on the mounting sleeve 121, an alignment hole is opened on the surface of the mounting body 100, one of the orifices of the alignment hole is communicated with the inside of the mounting sleeve 121, the other orifice of the alignment hole is communicated with the overflowing hole 110, the third sealing ring is installed inside the mounting sleeve 121, the pressure sensor passes through the assembly opening and is sleeved inside the mounting sleeve 121, the pressure sensor is in interference fit with the third sealing ring, and the sensing end of the pressure sensor is in interference with the hole wall of the alignment hole. Specifically, the pressure sensor may be sleeved inside the mounting sleeve 121, and then the sensing end of the pressure sensor further extends into the alignment hole. Compared with a mode of directly inserting the sensing end of the pressure sensor into the alignment hole, the above embodiment effectively improves the fixing effect of the pressure sensor on the mounting body 100. In addition, the third seal ring is attached to the mounting sleeve 121, so that the pressure sensor can be prevented from loosening at the mounting portion 120. This is only one of the reinforcement ways, for example: the counterpoint hole is gone up to add and is established the counterpoint screw thread, stretches into counterpoint hole back when pressure sensor, and the counterpoint screw thread can contradict with pressure sensor counterpoint, perhaps counterpoint screw thread and pressure sensor threaded connection.

In one embodiment, the mounting sleeve 121 includes a first sub-barrel and a second sub-barrel, the first sub-barrel is movably sleeved outside the second sub-barrel, the end of the first sub-barrel is opened with the assembling port, the second sub-barrel is connected to the mounting body 100, both the inside of the first sub-barrel and the inside of the second sub-barrel are communicated with the aligning hole, and the pressure sensor can be sleeved inside the first sub-barrel and the second sub-barrel. In particular, it is considered that the type of pressure sensor sometimes used varies, for example: the size of the pressure sensor varies. At this moment, alright with according to pressure sensor's actual size, adjust first minute section of thick bamboo and second minute section of thick bamboo to can change the bulge height of installation sleeve 121 on installation body 100, guaranteed the fixed effect to the pressure sensor of different models.

In one embodiment, a flow rate detecting device includes the ultrasonic flowmeter of any one of the above embodiments, and further includes a pressure sensor mounted on the ultrasonic flowmeter via the mounting portion 120.

Above-mentioned flow detection device installs pressure sensor on ultrasonic flowmeter through installation department 120 when using, has realized assembling ultrasonic detection mechanism and pressure sensor's while promptly, and the water source can pass through pressure sensor after ultrasonic detection mechanism, and pressure sensor alright carry out water pressure detection with the water source to crossing in the discharge orifice 110 this moment, even make ultrasonic flowmeter more convenient to the detection of water source.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. An ultrasonic flow meter, comprising: installation body, ultrasonic detection mechanism, be equipped with discharge orifice and installation department on the installation body, the discharge orifice is used for the water source to flow through, ultrasonic detection mechanism installs on the installation body, just ultrasonic detection mechanism's sense terminal stretches into the discharge orifice, ultrasonic detection mechanism is used for detecting the velocity of flow at water source, the installation department with the discharge orifice is linked together, just the installation department is located one side that ultrasonic detection mechanism rivers flow through, the installation department is used for placing pressure sensor.

2. An ultrasonic flow meter according to claim 1, wherein the ultrasonic detection mechanism comprises a signal processing element, a first probe element, a second probe element, a first reflection element and a second reflection element, the first probe element and the second probe element are both electrically connected to the signal processing element, the first reflection element and the second reflection element are mounted inside the overflowing hole at intervals, a first mounting hole and a second mounting hole are spaced apart from each other on the mounting body, the first probe element is fixed on the mounting body through the first mounting hole, the sensing end of the first probe element faces the first reflection element, the second probe element is fixed on the mounting body through the second mounting hole, and the sensing end of the second probe element faces the second reflection element.

3. An ultrasonic flow meter according to claim 2, further comprising a first sealing ring and a second sealing ring, wherein the first sealing ring is sleeved in the first mounting hole, the first probe member extends into the first mounting hole to be in interference fit with the first sealing ring, the first sealing ring is sleeved in the first mounting hole, and the second probe member extends into the second mounting hole to be in interference fit with the second sealing ring.

4. An ultrasonic flow meter according to claim 2, wherein the ultrasonic detection mechanism further comprises a fixing plate, the fixing plate is suspended in the overflowing hole, a first fixing groove and a second fixing groove are formed in the fixing plate, the first reflecting member is mounted on the fixing plate through the first fixing groove, and the second reflecting member is mounted on the fixing plate through the second fixing groove.

5. The ultrasonic flow meter according to claim 4, further comprising a first connecting member and a second connecting member, both of which are mounted on the fixing plate, wherein the first connecting member is located in the first fixing groove, the first reflecting member is obliquely disposed on the fixing plate via the first connecting member, the second connecting member is located in the second fixing groove, and the second reflecting member is obliquely disposed on the fixing plate via the second connecting member.

6. The ultrasonic flow meter of claim 4, further comprising a flow stabilizer mounted on the fixed plate.

7. An ultrasonic flow meter according to claim 2, wherein the mounting portion comprises a mounting sleeve and a third sealing ring, the mounting sleeve is mounted on the surface of the mounting body, an assembly opening is formed in the mounting sleeve, an alignment hole is formed in the surface of the mounting body, one hole of the alignment hole is communicated with the inside of the mounting sleeve, the other hole of the alignment hole is communicated with the overflowing hole, the third sealing ring is mounted inside the mounting sleeve, the pressure sensor passes through the assembly opening and is sleeved inside the mounting sleeve, the pressure sensor is in interference fit with the third sealing ring, and the sensing end of the pressure sensor is in interference with the hole wall of the alignment hole.

8. The ultrasonic flow meter of claim 7, wherein the alignment hole has alignment threads on a sidewall thereof, the alignment threads being in threaded engagement with the sensing end of the pressure sensor.

9. The ultrasonic flowmeter of claim 7, wherein the mounting sleeve comprises a first sub-barrel and a second sub-barrel, the first sub-barrel is movably sleeved outside the second sub-barrel, the end of the first sub-barrel is provided with the assembling port, the second sub-barrel is connected with the mounting body, the inside of the first sub-barrel and the inside of the second sub-barrel are both communicated with the aligning hole, and the pressure sensor can be sleeved inside the first sub-barrel and the second sub-barrel.

10. A flow rate detecting apparatus comprising the ultrasonic flow meter according to any one of claims 1 to 9, and further comprising a pressure sensor mounted on the ultrasonic flow meter via the mounting portion.

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