Portable flood alarm sensor verification device

Abstract

The invention provides a portable flood alarm sensor verification device which comprises a main box body, and a water tank is arranged above the main box body. A water supply assembly and a water return assembly are arranged in the main box body, a water pipe quick connector which is quickly connected with a measuring cylinder of a flood alarm sensor is arranged on one side of the main box body, the water pipe quick connector is communicated with the water supply assembly and the water return assembly, a flow detection piece used for detecting the water outlet amount of the water supply assembly is arranged in the main box body, and the flow detection piece is electrically connected with an electric control system. The electric control system is arranged in the main box body; and strap joints are arranged on the same side surfaces of the main box body and the water tank. By arranging the water supply assembly and the water return assembly, water supply and water return in the measuring cylinder of the flood alarm sensor can be rapidly detected; the whole device can be conveniently carried through the arranged strap connector, and when the device needs to be carried out, the device can be carried only by externally connecting straps to the strap connector.

Description

Technical Field

[0001] This invention relates to the field of flood alarm technology, and in particular to a portable flood alarm sensor calibration device. Background Technology

[0002] Hydropower station flood alarm sensors often have measuring cylinders for measuring water levels. However, when testing flood alarm sensors, a large amount of water needs to be manually injected into the measuring cylinder. Currently, the calibration work of hydropower station flood alarm sensors is difficult, time-consuming, and has low reliability. In particular, the manual water addition and release method is inefficient and makes it difficult to complete the calibration task quickly and accurately. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] To achieve the above objectives, the present invention proposes a portable flood alarm sensor calibration device, comprising a main housing, wherein a water tank is provided on the top of the main housing;

[0005] The main housing contains a water supply component and a water return component. A quick-connect water pipe connector is provided on one side of the main housing for quick connection to the measuring cylinder of the flood alarm sensor. The quick-connect water pipe connector is connected to both the water supply component and the water return component. The main housing also contains a flow detection device for detecting the water output of the water supply component. The flow detection device is electrically connected to an electrical control system, which is located inside the main housing.

[0006] Both the main body and the water tank are equipped with strap connectors on the same side.

[0007] This invention, by setting up a water supply component and a water return component, allows for quick connection of the water pipe quick connector to the water inlet of the measuring cylinder of the flood alarm sensor during testing. After this connection, the water supply component supplies water to the measuring cylinder of the flood alarm sensor for testing. After the test is completed, the water inside the measuring cylinder is returned to the water tank through the water return component, thus quickly completing the testing of the flood alarm sensor. At the same time, the included shoulder strap connector facilitates the carrying of the entire device. When it is necessary to carry the device outside, a shoulder strap can be attached to the shoulder strap connector for easy transport.

[0008] Optionally, the quick-connect water pipe includes a detection outlet and a detection return outlet;

[0009] The water supply component includes a water tank outlet pipe disposed in the main tank, the water tank outlet pipe being connected to the water tank, a first solenoid valve being connected to one end of the water tank outlet pipe at the main tank, a water supply pipeline being provided between the first solenoid valve and the detection outlet, and a water pump and the flow detection device being sequentially provided on the water supply pipeline from the first solenoid valve to the detection outlet.

[0010] The water return assembly includes a water tank return pipe disposed in the main tank, the water tank return pipe being connected to the water tank, a second solenoid valve being connected to one end of the water tank return pipe at the main tank, a water return pipeline being provided between the second solenoid valve and the detection water return port, the water return pipeline passing through the water pump and the flow detection element sequentially from the detection water return port to the second solenoid valve;

[0011] The detection outlet is equipped with a third solenoid valve, and the detection return outlet is equipped with a fourth solenoid valve.

[0012] The water pump, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are all electrically connected to the electrical control system.

[0013] Furthermore, the quick-connect water pipe also includes a metering outlet and a metering return outlet. The metering outlet is connected to the water supply pipeline, and the metering return outlet is connected to the return pipeline. A re-measuring cylinder is connected to the metering outlet and the metering return outlet. A fifth solenoid valve is provided at the metering outlet, and a sixth solenoid valve is provided at the metering return outlet.

[0014] Furthermore, the flow detection element is configured as a flow meter.

[0015] Furthermore, a touch screen is provided on one side of the main housing, and the touch screen is electrically connected to the electronic control system.

[0016] Furthermore, the main housing is equipped with an isolation compartment for accommodating the electronic control system.

[0017] Furthermore, the main body is provided with multiple pulley assemblies on the side away from the water tank, and a pull ring is provided on the side of the main body facing the water pipe quick connector.

[0018] Furthermore, a support structure for supporting the water tank is provided between the main body and the water tank. The support structure includes multiple support columns arranged corresponding to the edge of the water tank. One end of the support column is provided with an L-shaped support member for fitting the corner of the water tank edge.

[0019] Furthermore, a level gauge is installed inside the water tank, and the level gauge is electrically connected to the electronic control system.

[0020] Furthermore, the main housing is equipped with an electrical quick-connector for quick connection with the flood alarm sensor.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram illustrating the working principle of a portable flood alarm sensor calibration device according to the present invention, intended to show the connection relationship between the device and the measuring cylinder of the flood alarm sensor under test, as well as the front view of the device structure.

[0024] Figure 2 This is a schematic diagram of the structure of a portable flood alarm sensor calibration device according to the present invention, taken from the right side.

[0025] Figure 3 This is a schematic diagram of the structure of a portable flood alarm sensor calibration device according to the present invention (left side view);

[0026] Figure 4 This is a top view schematic diagram of the structure of a portable flood alarm sensor calibration device according to the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the internal structure of the water tank of a portable flood alarm sensor calibration device according to the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the internal structure of the main casing of a portable flood alarm sensor calibration device according to the present invention;

[0029] Figure 7 This is another cross-sectional schematic diagram of the internal structure of the main casing of a portable flood alarm sensor calibration device according to the present invention, showing only the structure of the water supply component and the return water component.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Main housing; 11. Isolation compartment; 12. Battery assembly; 13. Pulley assembly; 14. Pull ring; 15. Support structure; 151. Support column; 152. L-shaped support component; 2. Water tank; 21. Level gauge; 22. Electrical conduit; 23. Water inlet; 24. Manual valve; 3. Water supply assembly; 31. Water tank outlet pipe; 32. First solenoid valve; 33. Water supply pipeline; 34. Water pump; 35. Third solenoid valve ; 4. Water return assembly; 41. Water tank return pipe; 42. Second solenoid valve; 43. Return pipe; 44. Fourth solenoid valve; 5. Water pipe quick connector; 51. Detection outlet; 52. Detection return outlet; 53. Metering outlet; 531. Fifth solenoid valve; 54. Metering return outlet; 541. Sixth solenoid valve; 6. Flow detection device; 7. Electrical control system; 8. Shoulder strap connector; 9. Touch screen; 10. Electrical quick connector. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] This invention proposes a portable flood alarm sensor calibration device, as described below. Figures 1 to 7 Please provide a detailed explanation.

[0034] A portable flood alarm sensor calibration device includes a main body 1, a water tank 2 is provided on the top of the main body 1, and a water inlet 23 is provided on the side of the water tank 2 away from the main body 1.

[0035] The main housing 1 is equipped with a water supply component 3 and a water return component 4. A quick-connect water pipe connector 5 for quick connection to a measuring cylinder of a flood alarm sensor is provided on one side of the main housing 1. The quick-connect water pipe connector 5 is connected to both the water supply component 3 and the water return component 4. The main housing 1 is also equipped with a flow detection device 6 for detecting the water output of the water supply component 3. The flow detection device 6 is electrically connected to an electrical control system 7. The electrical control system 7 adopts a Siemens PLC system and is located inside the main housing 1.

[0036] Both the main body 1 and the water tank 2 are equipped with a strap connector 8 on the same side.

[0037] This invention, by setting up a water supply component 3 and a water return component 4, allows for quick connection of the water pipe quick connector 5 to the water inlet of the measuring cylinder of the flood alarm sensor when testing it. After this connection, water is supplied to the measuring cylinder of the flood alarm sensor through the water supply component 3 for testing. After the test is completed, the water inside the measuring cylinder is returned to the water tank 2 through the water return component 4, thus quickly completing the testing of the flood alarm sensor. At the same time, the included shoulder strap connector 8 facilitates the carrying of the entire device. When it is necessary to carry the device outside, a shoulder strap can be attached to the shoulder strap connector 8 for carrying.

[0038] Specifically, the quick-connect water pipe 5 includes a detection outlet 51 and a detection return outlet 52;

[0039] Water supply component 3 includes a water tank outlet pipe 31 installed in the main tank 1. The water tank outlet pipe 31 is connected to the water tank 2. A first solenoid valve 32 is connected to one end of the water tank outlet pipe 31 in the main tank 1. A water supply pipeline 33 is provided between the first solenoid valve 32 and the detection outlet 51. A water pump 34 and a flow detection element 6 are sequentially provided on the water supply pipeline 33 from the first solenoid valve 32 to the detection outlet 51.

[0040] The water return assembly 4 includes a water tank return pipe 41 installed in the main tank 1. The water tank return pipe 41 is connected to the water tank 2. A second solenoid valve 42 is connected to one end of the water tank return pipe 41 in the main tank 1. A water return pipeline 43 is provided between the second solenoid valve 42 and the detection return port 52. The water return pipeline 43 passes through the water pump 34 and the flow detection element 6 in sequence from the detection return port 52 to the second solenoid valve 42.

[0041] The water outlet 51 is equipped with a third solenoid valve 35, and the water return outlet 52 is equipped with a fourth solenoid valve 44.

[0042] The water pump 34, the first solenoid valve 32, the second solenoid valve 42, the third solenoid valve 35, and the fourth solenoid valve 44 are all electrically connected to the electrical control system 7.

[0043] When water needs to be supplied to the measuring cylinder, the water flows from the water tank 2 through the water tank outlet pipe 31 and passes through the first solenoid valve 32. Under the action of the water pump 34, the water flows from the first solenoid valve 32 through the water pump 34, the flow detection element 6, the third solenoid valve 35 and finally to the detection outlet 51, thus completing the water supply to the measuring cylinder.

[0044] When it is necessary to recover the test water supply in the measuring cylinder, the water flows through the test return water port 52 into the return water pipe. Under the action of the water pump 34, the water flows through the test return water port 52, the fourth solenoid valve 44, the water pump 34, the flow meter, the second solenoid valve 42, and the water tank return water pipe 41 in sequence back to the water tank 2.

[0045] Considering the portability of the device, the overall device needs to be lightweight. Therefore, in some embodiments, there is only one water pump 34. In one embodiment, the water pump 34 is set as a centrifugal pump, model XDC3500.

[0046] Without maximizing lightweight design, in another embodiment, water pumps 34 are independently arranged on the return water pipe 43 and the supply water pipe 33, and each water pump 34 is only responsible for supplying power for water supply or returning water.

[0047] Further considerations for weight reduction necessitate simplification of the water supply pipe 33 and the return pipe 43 to reduce pipe weight. Therefore, as... Figure 2 As shown, the water supply pipeline 33, from the first solenoid valve 32 to the detection outlet 51, consists of the following:

[0048] The first water supply section extends from the first solenoid valve 32 to the water pump 34.

[0049] The second water supply section extends from water pump 34 to flow detection element 6;

[0050] The third water supply section is from the flow detection element 6 to the third solenoid valve 35;

[0051] The return water pipe 43 can share the same pipe as the supply water pipe 33. The return water pipe 43, from the detection return water port 52 to the second solenoid valve 42, consists of the following:

[0052] The first return water section extends from the return water detection port 52 to the water pump 34. The first return water section and the first water supply section share the same pipeline leading to the water pump 34. The return water detection port 52 is connected to the pipeline of the first water supply section.

[0053] The second return water section, from water pump 34 to flow detection element 6, uses the same pipeline as the second water supply section;

[0054] The third return water section connects the flow detection element 6 to the second solenoid valve 42. The third return water section uses the same pipeline as the third water supply section, and an additional pipeline connecting to the second solenoid valve 42 is added to the third water supply section.

[0055] By merging part of the return water pipe 43 and the supply water pipe 33, the weight caused by the independent setting of the two sets of pipes is reduced, thereby achieving a lightweight design of the overall pipeline. When it is necessary to recover the water in the measuring cylinder, the water flows through the detection return water port 52, through the fourth solenoid valve 44, the first return water section (first supply water section), the water pump 34, the second return water section (second supply water section), the third return water section (third supply water section), the second solenoid valve 42, and the water tank return water pipe 41 back to the water tank 2.

[0056] Specifically, the flow detection element 6 is configured as a flow meter. This facilitates the detection of water flow during both the water supply and return processes.

[0057] In some embodiments, manual valves 24 are provided on the water tank 2 at positions corresponding to the water tank outlet pipe 31 and the water tank return pipe 41, respectively, to control the water output of the water tank outlet pipe 31 and the water return pipe 41, thereby further realizing precise control of the water supply process.

[0058] In some embodiments, such as Figure 3 As shown, the quick-connect water pipe 5 also includes a metering outlet 53 and a metering return outlet 54. The metering outlet 53 is connected to the water supply pipe 33, and the metering return outlet 54 is connected to the return pipe 43. A re-measuring cylinder is connected to the metering outlet 53 and the metering return outlet 54. A fifth solenoid valve 531 is provided at the metering outlet 53, and a sixth solenoid valve 541 is provided at the metering return outlet 54.

[0059] When testing the water supply of the graduated cylinder of the flood alarm sensor, the water level in the graduated cylinder may be inaccurate. There are two possible reasons for this. One reason is that the water level in the graduated cylinder has not actually reached the alarm value. This is because the graduated cylinder of the flood alarm sensor has been exposed to the external environment for a long time and the inside of the graduated cylinder has been soaked in water for a long time, causing the scale to be corroded, making it impossible to clearly observe the water level during the pumping process. The other reason is that the flood alarm sensor is damaged. In this case, it is necessary to rule out the first reason of insufficient water supply. The water pumped into the graduated cylinder of the flood alarm sensor enters the return water pipe from the detection return water port 52 and is pumped out from the metering outlet 53 to the retesting metering cylinder. The accurate water level can be obtained by calculating or directly observing the liquid level in the retesting metering cylinder.

[0060] When the water level in the measuring cylinder is greater than or equal to the alarm water level, it indicates that the flood alarm sensor is damaged and needs to be repaired or replaced.

[0061] When the water level in the retesting metering cylinder is lower than the alarm water level, it indicates insufficient water supply. Calculate or observe the water level difference, discharge the water in the retesting metering cylinder into the water supply return pipe through the metering return port 54, and pump it back into the flood alarm sensor measuring cylinder through the detection outlet 51. Based on the water level difference obtained in the retesting metering cylinder, replenish the water supply to the flood alarm sensor measuring cylinder, and perform the detection again.

[0062] To further consider the control of the electrical control system 7, a touch screen 9 is provided on one side of the main housing 1, and the touch screen 9 is electrically connected to the electrical control system 7. The touch screen 9 allows operators to easily input control commands to the electrical control system 7, and it can display the control interface and numerical information of the electrical control system 7, facilitating the monitoring of various solenoid valves, water pumps 34, and flow detection devices 6.

[0063] To isolate and protect the electronic control system 7, the main housing 1 is equipped with an isolation chamber 11 for housing the electronic control system 7. The isolation chamber 11 effectively isolates the water supply component 3, the return water component 4, and the electronic control system 7, preventing water leakage from the water supply component 3 or the return water component 4 from causing a short circuit in the electronic control system 7. In some embodiments, the isolation chamber 11 also houses a battery assembly 12 that supplies power to each electronic control system 7, as well as each solenoid valve and flow detection device 6. Placing the battery assembly 12 in the isolation chamber 11 also helps to prevent water leakage from the return water component 4 or the water supply component 3 from causing a short circuit in the battery.

[0064] To further consider the overall portability of the device, the main housing 1 is equipped with multiple pulley assemblies 13 on the side facing away from the water tank 2, and a pull ring 14 is provided on the side of the main housing 1 facing the water pipe quick connector 5. The pull ring 14 and pulley assembly 13 make it easy for staff to move the device horizontally on the ground. When the movement can be carried out on the ground, the staff can move the entire device by pulling the main housing 1 with the pull ring 14.

[0065] In some embodiments, a support structure 15 for supporting the water tank 2 is provided between the main body 1 and the water tank 2. The support structure 15 includes a plurality of support columns 151 arranged corresponding to the edge of the water tank 2. One end of the support column 151 is provided with an L-shaped support member 152 for fitting against the corner of the edge of the water tank 2. The support structure 15 allows the main body 1 and the water tank 2 to be set separately. When the water tank 2 needs to be cleaned or replaced internally, the staff can remove the water tank 2 from the support structure 15 for cleaning or replacement. The L-shaped support member 152 can ensure that the water tank 2 is in a relatively stable state when it is directly above the main body 1. When the main body 1 moves, the L-shaped support member 152 can drive the water tank 2 to move simultaneously, preventing the water tank 2 from detaching from the main body 1 during the movement of the main body 1.

[0066] Furthermore, in order to detect the liquid level in the water tank 2, a level gauge 21 is installed inside the water tank 2, and the level gauge 21 is electrically connected to the electrical control system 7. The installation of the level gauge 21 facilitates the monitoring of the water level in the water tank 2, and an electrical conduit 22 is provided between the water tank 2 and the main tank 1 for the wires between the level gauge 21 and the electrical control system 7 to pass through.

[0067] Furthermore, the main housing 1 is equipped with an electrical quick-connect connector 10 for quick connection with the flood alarm sensor. The measuring cylinder of the flood alarm sensor usually has a level switch to detect the liquid level. The electrical quick-connect connector can be electrically connected to various electronic devices that need to be detected in the flood alarm sensor, including the level switch, so that the electrical control system 7 can be connected to detect the various electronic devices such as the level switch in the measuring cylinder.

[0068] In the description of this invention, it should 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A portable flood alarm sensor calibration device, characterized in that, Includes a main body, with a water tank located on top of the main body; The main housing contains a water supply component and a water return component. A quick-connect water pipe connector is provided on one side of the main housing for quick connection to the measuring cylinder of the flood alarm sensor. The quick-connect water pipe connector is connected to both the water supply component and the water return component. The main housing also contains a flow detection device for detecting the water output of the water supply component. The flow detection device is electrically connected to an electrical control system, which is located inside the main housing. Both the main body and the water tank are equipped with strap connectors on the same side.

2. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, The quick-connect water pipe includes a detection outlet and a detection return outlet; The water supply component includes a water tank outlet pipe disposed in the main tank, the water tank outlet pipe being connected to the water tank, a first solenoid valve being connected to one end of the water tank outlet pipe at the main tank, a water supply pipeline being provided between the first solenoid valve and the detection outlet, and a water pump and the flow detection device being sequentially provided on the water supply pipeline from the first solenoid valve to the detection outlet. The water return assembly includes a water tank return pipe disposed in the main tank, the water tank return pipe being connected to the water tank, a second solenoid valve being connected to one end of the water tank return pipe at the main tank, a water return pipeline being provided between the second solenoid valve and the detection water return port, the water return pipeline passing through the water pump and the flow detection element sequentially from the detection water return port to the second solenoid valve; The detection outlet is equipped with a third solenoid valve, and the detection return outlet is equipped with a fourth solenoid valve. The water pump, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are all electrically connected to the electrical control system.

3. The portable flood alarm sensor calibration device as described in claim 2, characterized in that, The quick-connect water pipe also includes a metering outlet and a metering return outlet. The metering outlet is connected to the water supply pipeline, and the metering return outlet is connected to the return pipeline. A re-measuring cylinder is connected to the metering outlet and the metering return outlet. A fifth solenoid valve is provided at the metering outlet, and a sixth solenoid valve is provided at the metering return outlet.

4. The portable flood alarm sensor calibration device as described in claim 2, characterized in that, The flow detection device is a flow meter.

5. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, A touch screen is provided on one side of the main housing, and the touch screen is electrically connected to the electronic control system.

6. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, The main housing contains an isolation compartment for accommodating the electronic control system.

7. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, The main body is equipped with multiple pulley assemblies on the side away from the water tank, and a pull ring is provided on the side of the main body facing the water pipe quick connector.

8. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, A support structure for supporting the water tank is provided between the main body and the water tank. The support structure includes multiple support columns arranged corresponding to the edge of the water tank. One end of the support column is provided with an L-shaped support for fitting the corner of the water tank edge.

9. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, The water tank is equipped with a level gauge, which is electrically connected to the electronic control system.

10. The portable flood alarm sensor calibration device as described in claim 1, characterized in that, The main housing is equipped with an electrical quick-connector for quick connection with the flood alarm sensor.

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