Liquid level meter and probe thereof

Abstract

The invention relates to a liquid level instrument and a probe thereof, and the liquid level instrument probe comprises a mounting part which is used for being connected with a mounting port of an oil storage tank; the detection rod is connected with the mounting part and extends into the oil storage tank; and the plurality of first pressure sensors are arranged at different heights of the detection rod along the axis of the detection rod and are used for monitoring pressures at different heights. According to the liquid level instrument probe, the pressures of the oil storage tank at different heights can be detected, the oil liquid height and the water height can be calculated according to the detected pressures at the different heights, the volume of oil liquid in the oil storage tank can be accurately obtained, and metering management of the oil liquid is facilitated.

Description

Technical Field

[0001] This invention relates to oil measurement equipment, and more particularly to a level gauge and its probe. Background Technology

[0002] Gas stations primarily handle the receipt, sale, and storage of fuel, all of which require quantitative measurement of the fuel in storage tanks for effective fuel metering management. Daily inventory management focuses on the amount of fuel received, stored, and remaining in each tank. However, for bulk liquids like fuel, counting is insufficient, and weighing is inconvenient in a gas station setting. The most common method is measuring liquid volume—the amount of fuel occupied in the storage tank. However, storage tanks often contain moisture. While this moisture may accumulate at the bottom and separate from the fuel, it still affects measurement accuracy, leading to significant metering errors. Summary of the Invention

[0003] To address the technical problems existing in the prior art, the present invention proposes a level gauge probe, comprising: a mounting part for connecting to the mounting port of an oil storage tank; a probe rod connected to the mounting part and extending into the oil storage tank; and a plurality of first pressure sensors arranged at different heights along the axis of the probe rod for monitoring the pressure at different heights.

[0004] As described above, the mounting part of the level gauge probe is a mounting head or a mounting ring.

[0005] As described above, the level gauge probe includes a mounting head comprising a mounting base and a protective cover. The first end of the mounting base includes an internal thread, which is threadedly connected to the mounting port of the oil storage tank. The second end of the mounting base includes an external thread, which is threadedly connected to the protective cover. The mounting base has a mounting hole inside, which passes through the first and second ends for connection to the probe rod.

[0006] As described above, the top surface of the protective cover of the level gauge probe includes an opening for accommodating a communication cable connected to the probe.

[0007] The level gauge probe as described above, the mounting head further includes: a self-aligning component, which is disposed in the mounting hole and connected to the probe rod, for adjusting the vertical state of the probe rod.

[0008] As described above, the level gauge probe has a rubber mounting ring that secures the probe to the mounting port of the oil storage tank and creates a sealed connection.

[0009] As described above, the level gauge probe includes a probe body and an electronic head. The electronic head is installed in the mounting section, and the probe body is connected to the electronic head and extends into the oil storage tank. A first pressure sensor is disposed on the probe body, and the electronic head includes circuit elements that are connected to the first pressure sensor.

[0010] As described above, the level gauge probe body includes a connecting section and a detection section, a first pressure sensor is disposed on the detection section, and the connecting section connects the electronic head and the detection section.

[0011] The level gauge probe described above further includes a plurality of second pressure sensors, which are disposed on the same plane perpendicular to the axis of the probe section and located between the plurality of first pressure sensors, for detecting the tilt angle of the probe section.

[0012] The level gauge probe described above further includes a third pressure sensor and a temperature sensor. The third pressure sensor is mounted on the probe and is used to detect the gas phase pressure inside the oil storage tank. The temperature sensor is mounted on the probe and is used to detect the liquid temperature or gas phase temperature inside the oil storage tank.

[0013] According to another aspect of this application, a level gauge is provided, comprising: a control console and a level gauge probe as described above connected to the control console.

[0014] The level gauge probe of this application can detect the pressure at multiple different heights in the oil storage tank, and can calculate the oil level and water level based on the detected pressure at multiple different heights, so as to accurately determine the oil volume in the oil storage tank, which is convenient for oil measurement and management. Attached Figure Description

[0015] The preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of a level gauge according to one embodiment of this application;

[0017] Figure 2 This is a schematic diagram of a level gauge probe according to one embodiment of this application;

[0018] Figure 3 An exploded view of a level gauge probe according to an embodiment of this application;

[0019] Figures 4A-4C This is a schematic diagram of a level gauge probe structure according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of probe detection calculation according to one embodiment of this application;

[0021] Figure 6This is a schematic diagram of a level gauge probe according to another embodiment of this application;

[0022] Figure 7 An exploded view of a level gauge probe according to another embodiment of this application;

[0023] Figure 8A and Figure 8B This is a schematic diagram of a level gauge probe structure according to another embodiment of this application;

[0024] Figure 9 This is a schematic diagram of a level gauge probe according to another embodiment of this application;

[0025] Figure 10 An exploded view of a level gauge probe according to another embodiment of this application; and

[0026] Figure 11A and Figure 11B This is a schematic diagram of a level gauge probe structure according to another embodiment of this application. Detailed Implementation

[0027] The principles and spirit of this application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided to make the principles and spirit of this application clearer and more thorough, enabling those skilled in the art to better understand and implement the principles and spirit of this application. The exemplary embodiments provided herein are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application.

[0028] In the following detailed description, reference can be made to the accompanying drawings, which form part of this application and illustrate specific embodiments of the application. In the drawings, similar reference numerals describe substantially similar components in different figures. Specific embodiments of the application are described in sufficient detail below to enable those skilled in the art to implement the technical solutions of this application. It should be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to the embodiments of this application. Furthermore, similar terms including "first," "second," and "third" in this application are used only to distinguish one entity (or operation) from another, and are not intended to require or imply any order or association between these entities (or operations).

[0029] This application discloses a level gauge, which includes a probe and a control console. The probe detects data within an oil storage tank and transmits the data to the control console. The control console can calculate the oil volume within the tank based on the detected data. The probe can be equipped with multiple pressure sensors at different heights to detect the pressure at these different heights within the tank. The control console can calculate the oil and water levels based on the detected pressures at these different heights, thus accurately determining the oil volume and facilitating oil metering management at gas stations.

[0030] The technical solution of this application will be further illustrated below through specific implementation methods. Those skilled in the art should understand that the following description is merely for the convenience of understanding the technical solution of this application and should not be used to limit the scope of protection of this application.

[0031] Figure 1 This is a schematic diagram of a level gauge according to one embodiment of this application.

[0032] As shown in the figure, the level gauge 100 includes one or more probes 110 and a control console 120. The probes 110 can be installed on the oil storage tank 10 and extend into the tank to measure the liquid level (e.g., oil and water levels), temperature, density, etc., within the tank. The control console 120 is installed in the gas station office and connected to the probes. It receives data transmitted from the probes and uses built-in software and algorithms to confirm the amount of oil stored in the tank, thus monitoring the liquid volume. In some embodiments, the control console can also be connected to other sensors (leak sensors, oil and gas sensors, manhole sensors) or fuel dispensers to receive information from these sensors or dispensers and provide statistical results. In some embodiments, the control console can be connected to multiple probes to monitor the oil levels in multiple storage tanks. In some embodiments, the control console may include a screen 121, which can display information such as oil level, water level, temperature, and oil volume in each storage tank.

[0033] In some embodiments, the oil storage tank 10 may be an elliptical tank buried underground at a gas station, having an initial tank gauge, i.e., a table showing the correspondence between the liquid height and volume inside the tank. The probe 110 measures two parameters—the oil height and the water height—to obtain the net height of the stored oil. Matching this to the tank gauge yields the oil volume. In some embodiments, the probe 110 can also detect data such as temperature and density inside the tank, and can correct the liquid volume based on the detected data to eliminate measurement errors. In some embodiments, the control console 120 can also generate a calibrated tank gauge by matching the liquid level data measured by the probe 110 with the refueling metering data from the fuel dispenser, thereby accurately determining the liquid level inside the tank. In some embodiments, the control console 120 can also monitor the oil or water level inside the tank based on the liquid level data measured by the probe 110, and provide a leakage warning when abnormal changes in the monitoring data are detected.

[0034] The measuring structure of the level gauge probe of this application will be described in detail below.

[0035] Figure 2 This is a schematic diagram of a level gauge probe according to one embodiment of this application. Figure 3 An exploded view of a level gauge probe according to one embodiment of this application. Figures 4A-4C This is a schematic diagram of a level gauge probe structure according to an embodiment of this application.

[0036] As shown in the figure, the level gauge probe (hereinafter referred to as "probe") 200 may include a mounting head 210 and a probe rod 220. The mounting head 210 is used to mount the probe onto an oil storage tank. The probe rod is connected to the mounting head and can extend into the oil storage tank to detect data within the tank. In some embodiments, the data may include oil level, water level, liquid density, liquid pressure, temperature, etc. In some embodiments, the probe rod 220 may also be connected to a control console, allowing the data detected by the probe rod 220 to be transmitted to the control console.

[0037] In some embodiments, the mounting head 210 may include a mounting base 211 and a protective cover 212. The mounting base can be connected to an oil storage tank, and the protective cover is disposed on the mounting base and can form a cavity with the mounting base to accommodate and protect a probe rod connected to the mounting base. In some embodiments, the mounting base may be tubular in shape, with its first end including an internal thread 2111 for connecting to the riser of the oil storage tank, thereby allowing the probe rod to be installed on the oil storage tank; the second end may include an external thread 2112 for connecting to the protective cover; the interior of the mounting base includes a mounting hole 2113 penetrating the first and second ends, which can be used to install the probe rod and connect it to the mounting base. In some embodiments, the mounting hole may include a stepped structure to provide axial positioning for the probe rod. In some embodiments, one end of the protective cover 212 may include an internal thread 2121 for connecting to the second end of the mounting base; the top surface of the protective cover 212 may include an opening 2122 for accommodating a control console connected to the probe rod.

[0038] In some embodiments, the probe 220 may include a probe body 221 and an electronic head 222. The electronic head 222 may include a protruding stepped structure that can be engaged in the stepped structure of the mounting hole of the mounting base, providing support and positioning for the probe. The probe body 221 may be connected to the electronic head and extend into the oil storage tank. In some embodiments, the probe 220 may further include a plurality of first pressure sensors 223, a second pressure sensor 224, and a plurality of temperature sensors 225, thereby detecting the pressure and temperature in the oil storage tank. In some embodiments, the plurality of first pressure sensors 223 and / or the plurality of temperature sensors 225 may be arranged along the axial direction of the probe body 221 on the probe body, respectively measuring the pressure and temperature (liquid temperature or gas phase temperature) at different heights. In some embodiments, the plurality of first pressure sensors and / or temperature sensors may be arranged at equal intervals. In some embodiments, the first pressure sensors and / or temperature sensors are arranged from the end furthest from the electronic head to the end closest to the electronic head. In some embodiments, the second pressure sensor 224 may be disposed on the probe body 221 and close to the electronic head, and may be used to detect the pressure of the gas phase space in the oil storage tank.

[0039] In some embodiments, the electronic head 222 may further include circuit elements and may be connected to a first pressure sensor, a second pressure sensor, and a temperature sensor to receive sensor detection data. In some embodiments, the electronic head 222 may also be communicatively connected to the control panel of the level gauge. For example, a communication cable connects the electronic head to the control panel through an opening in the protective cover, thereby uploading sensor detection data to the control panel, which can then calculate data such as liquid density, oil level, and water level based on the detection data.

[0040] In some embodiments, the probe body 221 may be composed of multiple probe segments spliced ​​together, thereby increasing the length of the probe and expanding its application range. In some embodiments, the first pressure sensor and temperature sensor may be arranged at equal intervals on a probe segment away from the electronic head, and each probe segment includes a connector to connect the sensors to the electronic head. In some embodiments, the first pressure sensor and temperature sensor may also be arranged at equal intervals on multiple probe segments, thereby facilitating the determination of the distance between the sensors.

[0041] Figure 5 This is a schematic diagram of probe detection calculation according to an embodiment of this application. As shown in the figure, the probe 200 can be installed on the oil storage tank 10 and extended into the oil storage tank. It can be used to measure the pressure and temperature inside the oil storage tank, and can upload the measured data to the control console to calculate the volume of oil in the oil storage tank.

[0042] According to one embodiment of this application, the second pressure sensor, denoted as A, is positioned near the electronic head of the probe, and the pressure value it measures is represented by P. a This indicates that, because this location is inside the oil tank near the tank opening, even when the tank is full, the pressure will not reach this level. Therefore, the pressure measured here is always the gas pressure value of the gas phase space inside the oil tank. Five first pressure sensors are arranged near the end of the probe, labeled O1, O2, O3, O4, and O5 from bottom to top; the pressure values ​​measured by each first pressure sensor are denoted by P. o1 P o2 P o3 P o4 P o5 The distance between two adjacent pressure sensors is represented by H. 12 H 23 H 34 H 45 This indicates that the height difference and distance difference between each pressure sensor are the same. Furthermore, assuming the oil level is between O4 and O5 and the water level is between O2 and O3, the oil volume of this application is calculated as follows:

[0043] First, by comparing the pressure value measured by the first pressure sensor with the pressure value measured by the second pressure sensor, P can be determined. o5 =P a P o4 >P a Therefore, it can be determined that the oil level is between O4 and O5.

[0044] Secondly, by using the pressure value measured by the first pressure sensor and the density calculation formula to calculate the liquid density between each pressure sensor, ρ can be obtained. 12 ρ23 ρ 34 ρ 45 By comparing the obtained liquid densities, ρ can be obtained. 12 >ρ 23 ρ 23 >ρ 34 Therefore, it can be determined that the oil-water interface is located between O2 and O3. Furthermore, the oil density can be calculated as ρ. 34 The density of water is ρ 12 The oil density can be compared with the standard density of the corresponding stored oil for verification. In some embodiments, if the oil-water separation interface is located elsewhere, the oil density and / or water density can also be calculated using density calculation formulas.

[0045] The density calculation formula is ρ mn =(P on -P om ) / gH mn Wherein, ρ mn This represents the density results between each of the first pressure sensors; m and n represent the serial numbers of each first pressure sensor, for example, the liquid density between O2 and O3 is expressed in terms of ρ. 23 This indicates that the liquid densities between O2 and O5 are expressed in terms of ρ. 25 express.

[0046] Secondly, the distance H between the pressure sensor and the liquid surface is calculated using the density data and the pressure measurement results from pressure sensor O3 or pressure sensor O4. ox And based on the distance H between pressure sensor O3 or pressure sensor O4 and the liquid surface. ox The distance H between pressure sensor O3 or pressure sensor O4 on the detection rod 1x The liquid level height H can be obtained. o .

[0047] The formula for calculating the distance between the first pressure sensor and the liquid surface is H. ox =P ox / ρ g g. Where, ρ g This represents the density of the oil.

[0048] Finally, the oil height H is calculated using the pressure calculation formula and the liquid level calculation formula. g and water height H w Based on the calculation results, by comparing them with the tank capacity table, data such as the total volume of liquid, water volume, and oil volume inside the tank can be obtained.

[0049] The formula for calculating liquid level is: H g +H w =H o

[0050] The formula for calculating pressure is: ρ g gH g +ρ w gH w =P 01

[0051] Where, ρ w This is the density of water.

[0052] The probe of this application can be fixed to the oil storage tank and the oil volume can be calculated. It does not need to move during the measurement process, is not limited by the detection environment, has high reliability, and provides accurate calculation results. Furthermore, multiple pressure measurement points can be used for verification and validation during density measurement and calculation, effectively reducing measurement errors and improving the reliability of the probe. Even in cases where the oil-water interface is unclear, the theoretical interface position can be accurately calculated. In addition, the probe of this application can also use a temperature sensor to monitor the working status of the oil storage tank and a pressure sensor to monitor the airtightness of the oil storage tank, eliminating the need for additional sensor monitoring.

[0053] This application also proposes an alternative structure for a level gauge probe.

[0054] Figure 6 This is a schematic diagram of a level gauge probe according to another embodiment of this application. Figure 7 An exploded view of a level gauge probe according to another embodiment of this application. Figure 8A and Figure 8B This is a schematic diagram of a level gauge probe structure according to another embodiment of this application.

[0055] As shown in the figure, the level gauge probe (hereinafter referred to as "probe") 600 may include a mounting head 610 and a probe rod 620. The mounting head 610 is used to mount the probe onto an oil storage tank. The probe rod is connected to the mounting head and can extend into the oil storage tank to detect data within the tank. In some embodiments, the data may include oil level, water level, liquid density, liquid pressure, temperature, etc. In some embodiments, the probe rod 620 may also be connected to a control console, allowing the data detected by the probe rod 620 to be transmitted to the control console. The structure of the probe rod 620 is similar to... Figure 2 The embodiments are similar, so they will not be described again here. The structure of the mounting head 610 will be described in detail below.

[0056] In some embodiments, the mounting head 610 may include a mounting base 611, a self-aligning component 612, and a protective cover 613. The mounting base can be connected to an oil storage tank and the probe rod can be mounted onto the tank. The self-aligning component 612 is disposed in the mounting base 611, which can connect the probe rod to the mounting base 611 and adjust the verticality of the probe rod. The protective cover is disposed on the mounting base and can form a cavity with the mounting base to accommodate only a portion of the probe rod and protect it.

[0057] In some embodiments, the mounting base may be tubular in shape, with its first end including an internal thread 6111 for connection to the riser of the oil storage tank, thereby allowing the probe to be installed on the oil storage tank; the second end may include an external thread 6112 for connection to a protective cover; the interior of the mounting base includes a mounting hole 6113 penetrating the first and second ends, which can be used to install a self-aligning component 612, allowing the probe to be connected to the mounting base. In some embodiments, the mounting hole 6113 may include a stepped structure, which can provide axial positioning for the self-aligning component.

[0058] In some embodiments, the self-aligning component 612 is installed in the mounting hole, which connects the probe rod to the mounting base and provides support for the probe rod. When the probe rod swings due to factors such as the tilting of the oil tank, the self-aligning component can adjust under the weight of the probe rod, thereby ensuring that the probe rod is always in a vertical state and preventing the probe rod from tilting and affecting the measurement results. In some embodiments, the self-aligning component can be a self-aligning bearing. When the probe rod swings, the self-aligning bearing can rotate its inner ring under the weight of the probe rod to adjust the state of the probe rod.

[0059] In some embodiments, one end of the protective cover 613 may include an internal thread 6131, which can be used to connect to the second end of the mounting base; the top surface of the protective cover 613 may include an opening 6132, which can be used to accommodate the connection of the control console and the probe rod.

[0060] The probe in this application can be kept vertical by setting a self-aligning component. This will prevent the probe from tilting due to installation problems or tilting of the oil tank, which would affect the measurement accuracy. It will ensure that the probe is always perpendicular to the liquid surface, thus guaranteeing accurate measurement.

[0061] This application also proposes an alternative structure for a level gauge probe.

[0062] Figure 9 This is a schematic diagram of a level gauge probe according to another embodiment of this application. Figure 10 An exploded view of a level gauge probe according to another embodiment of this application. Figure 11A and Figure 11B This is a schematic diagram of a level gauge probe structure according to another embodiment of this application.

[0063] As shown in the figure, the level gauge probe (hereinafter referred to as "probe") 900 may include a mounting ring 910 and a probe rod 920. The mounting ring 910 is used to mount the probe onto the oil storage tank. The probe rod 920 is connected to the mounting ring and extends into the oil storage tank to detect data in the tank. In some embodiments, the data may include oil level, water level, liquid density, liquid pressure, temperature, etc. In some embodiments, the probe rod 920 may also be connected to a control console, and the data detected by the probe rod 920 can be transmitted to the control console.

[0064] In some embodiments, the mounting ring 910 may be a rubber ring with a generally V-shaped cross-section. When the probe is installed at the port of the oil storage tank installation pipe, the rubber ring compresses the probe rod 920 to fix it inside the installation pipe, while also sealing the probe rod to the port of the installation pipe. In some embodiments, the mounting ring 910 may also be... Figure 2 The mounting head or other structure in the embodiments can be used to mount the probe rod onto the oil storage tank.

[0065] In some embodiments, the probe 920 may include a probe body 921 and an electronic head 922. The electronic head 922 may include a protruding stepped structure that can be engaged in a mounting ring, providing support and positioning for the probe. The probe body 921 may be connected to the electronic head and extend into the oil storage tank. In some embodiments, the probe 920 may further include a plurality of first pressure sensors 923 and a temperature sensor 924. The plurality of first pressure sensors 923 are arranged at different heights on the probe body 921 to measure the pressure at different heights; the temperature sensor 924 is disposed on the probe body 921 to measure the temperature (liquid temperature or gas phase temperature) inside the oil storage tank. In some embodiments, the probe 920 may further include a plurality of second pressure sensors 925, which may be disposed on the same horizontal plane of the probe body 921. The detection results of the plurality of second pressure sensors can determine whether the probe body is in a vertical state and can also determine the tilt angle of the probe body.

[0066] In some embodiments, the electronic head 922 may further include circuit elements and may be connected to a first pressure sensor, a second pressure sensor, and a temperature sensor to receive sensor detection data. In some embodiments, the electronic head 922 may also be connected to the control console of the level gauge. For example, it may be directly connected to the control console via a communication cable, thereby uploading sensor detection data to the control console, which can then calculate data such as liquid density, oil level, and water level based on the detection data.

[0067] In some embodiments, the probe body 921 may include a connecting section 9211 and a probe section 9212. A first pressure sensor, a second pressure sensor, and a temperature sensor may be disposed on the probe section 9212. The connecting section 9211 connects the probe section 9211 and the electronic head 922, increasing the probe length and connecting the sensors to the electronic head. In some embodiments, the connecting section 9211 may be a flexible probe, through which an oil communication cable may be threaded for communication connection between the sensors and the electronic head. In some embodiments, the flexible probe may be a metal corrugated pipe, a steel wire reinforced rubber tube, etc. In some embodiments, the probe section 9212 may be a rigid probe to support the sensors.

[0068] In some embodiments, the probe body 921 may further include a base 9213, which may be disposed at the end of the probe segment 9212 away from the connecting segment, and can fix the probe segment to the bottom of the oil storage tank. A first pressure sensor is arranged on the probe segment along its axial direction; a second pressure sensor may be arranged on a plane perpendicular to the axis of the probe segment. In some embodiments, the second pressure sensors are disposed on the same plane, which is located between the distribution of the first pressure sensors. In some embodiments, the first pressure sensors may be evenly spaced on the probe segment. In some embodiments, the first pressure sensors may be arranged from a position near the base towards the connecting segment. In some embodiments, the base 9213 may be a magnetic base, which can adsorb the rigid probe segment to the bottom of the oil storage tank. In some embodiments, the diameter of the base 9213 is larger than the diameter of the probe segment, which is beneficial for supporting the probe segment.

[0069] When installing the probe of this application on an oil storage tank: the probe section and base are placed into the oil storage tank through the installation port, the base is attached to the bottom of the tank, and the flexible section remains in a relaxed state; the electronic head is secured in the installation port through a rubber ring, and the electronic head is connected to the control console via a communication cable. The probe of this application can determine the oil volume by measuring the results at multiple pressure points, and can also use a pressure sensor to detect whether the probe section is tilted, and can correct the calculation results to obtain an accurate oil volume.

[0070] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention.

Claims

1. A probe for a tank gauge, comprising: a mounting portion for connecting to a mounting port of a tank; a probe stem connected to the mounting portion and extending into the tank; and a plurality of first pressure sensors arranged along an axis of the probe stem at different heights of the probe stem and configured to monitor pressure at the different heights.

2. The probe of claim 1, wherein the mounting portion is a mounting head or a mounting ring. a mounting base having a first end with an internal thread configured to be threadably connected to the mounting port of the tank and a second end with an external thread configured to be threadably connected to a protective cap, and a mounting hole extending through the first end and the second end and configured to be connected to the probe stem.

3. The liquid level gage probe of claim 2, the mounting head comprising:

4. The probe of claim 3, wherein the protective cap includes an opening in a top surface of the protective cap and configured to receive a communication cable connected to the probe stem. a truing member disposed in the mounting hole and connected to the probe stem and configured to adjust a vertical state of the probe stem.

5. The liquid level gage probe of claim 3, the mounting head further comprising:

6. The probe of claim 2, wherein the mounting ring is a rubber ring configured to snap onto the mounting port of the tank and to sealingly connect to the mounting port of the tank. the first pressure sensors are disposed on the probe stem body, and the electronic head includes circuitry connected to the first pressure sensors.

7. The liquid level gage probe of claim 1, the probe stem comprising a probe stem body and an electronics head, the electronics head being mounted in the mounting portion, the probe stem body being connected to the electronics head and extending into the storage tank; wherein, the probe stem body includes a connecting section and a probe section, and the first pressure sensors are disposed on the probe section, and the connecting section is connected between the electronic head and the probe section.

8. The liquid level gage probe of claim 7 wherein, 9. The probe of claim 8, further comprising a plurality of second pressure sensors disposed on a same plane perpendicular to an axis of the probe section and between the plurality of first pressure sensors and configured to detect an angle of inclination of the probe section.

10. The probe of claim 7, further comprising a third pressure sensor disposed on the probe stem and configured to detect a gas phase pressure in the tank, and a temperature sensor disposed on the probe stem and configured to detect a liquid temperature or a gas phase temperature in the tank. a console and the probe of any one of claims 1-10 connected to the console.

11. A liquid level gauge comprising: ​

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