Multifunctional handheld water depth detector device and operation method thereof

Abstract

This invention relates to the field of detection instrument technology, and more particularly to a multifunctional handheld water depth detector and its operating method. It comprises a depth sounding probe, a sounding rope, and a reel signal receiver. Its key features are: the depth sounding probe and the reel signal receiver are fixedly connected at both ends of the sounding rope; the sounding rope is made of hollow, transparent, and non-bending plastic material, with two copper wires on both sides and meter markings on its exterior from bottom to top; the sounding rope wires and outer sheath are fixedly connected to the reel signal receiver's roller, and the wires in the sounding rope are correspondingly connected to the wires in the reel; the sounding rope can be manually wound onto the reel signal receiver's roller; the lower end of the sounding rope is threadedly connected to the depth sounding probe. This invention provides a portable, simple-to-operate, multifunctional handheld water depth detector and its operating method that can accurately determine groundwater level, water depth, and well depth.

Description

Technical Field

[0001] This invention relates to the field of detection technology, and in particular to a multifunctional handheld depth sounder device and its operation method. Background Technology

[0002] Hydrogeological surveys are essential for urban development, water resource exploration, and geological disaster prevention. Artificial groundwater outcrops, such as hydrogeological boreholes and wells, are crucial objects of investigation in hydrogeological surveys. Well depth, water depth, and water level reflect vital information about groundwater conditions and are information that hydrogeologists need to ascertain. While numerous portable water level measuring instruments are available on the market, most utilizing the conductivity of water, portable well depth measuring instruments are extremely rare, and portable instruments capable of simultaneously measuring well depth, water depth, and water level are almost nonexistent. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems by proposing a multifunctional handheld water depth detector device and its operation method that is easy to carry, simple to operate, and can accurately measure groundwater level, water depth and well depth.

[0004] The technical solution adopted in this invention is as follows: a multifunctional handheld depth sounder device, comprising a depth sounding probe, a measuring rope, and a reel signal receiver, characterized in that: the depth sounding probe and the reel signal receiver are fixedly connected at both ends of the measuring rope, the front end of the measuring rope is fixedly connected to the reel signal receiver, and the tail end of the measuring rope is threadedly connected to the depth sounding probe; the measuring rope is made of hollow, transparent, and non-bending plastic material, with two copper wires on both sides of the measuring rope, and meter markings are marked on the outside of the measuring rope from bottom to top; the measuring rope wires and the outer wrapping layer are fixedly connected to the reel signal receiver's roller, and the wires in the measuring rope are correspondingly connected to the wires in the reel; the measuring rope can be manually wound onto the reel signal receiver's roller; the lower end of the measuring rope is threadedly connected to the depth sounding probe.

[0005] As a further improvement, the depth sounding probe includes a control section and a base. The control section consists of a conductivity chamber and a rectangular copper conductivity sheet. The outer wall of the conductivity chamber is sealed to the conductivity sheet by a telescopic rubber seal. The right side of the conductivity sheet is fixedly connected to the inner ring wall by a piston buckle, and the inside of the piston buckle is connected to a wire. Four columnar locking holes are evenly distributed at the bottom of the control section, and four pull-ring type striking pins pass through the locking holes from the outside. A lead ring is fitted around the control section. The base consists of an aluminum vertically movable conical piston rod and a cylindrical base. The conical piston rod is fixedly connected to the cylindrical base, and the whole is fixedly connected to the two sides of the bottom of the depth sounding probe by a telescopic rubber seal. Four buckle-shaped locking rods, which are larger at the top and smaller at the bottom, are evenly distributed on the upper part of the contact plate. The base can be sealed and connected to the bottom circular groove of the upper part of the depth sounding probe when the compressible rubber contracts.

[0006] As a further improvement, the measurement and control section includes a water inlet pipe, a conductivity chamber, a conductivity sheet, a probe, a lock hole, a striker, a piston buckle, a wire, a lead ring, a telescopic rubber, and a connector. The conductivity chamber is hollow and sealed, with an outer wall of compressible rubber. Part of the conductivity sheet extends into the conductivity chamber, and the inner wall of the conductivity chamber is fixedly attached to the contact part with the conductivity sheet. The conductivity chamber contains a probe, which is connected to a wire. The other end of the conductivity sheet is fixed to the inner wall of the water inlet pipe by a piston buckle. The lower part of the measurement and control section has four equiaxially distributed cylindrical lock holes, and the striker extends into the lock holes through the outside of the measurement and control section, with a pull ring connected to the outer end of the striker. The upper part of the measurement and control section is wrapped with a lead ring. The internal structure of the connector is the same as that of the measuring rope, and the outside is made of copper threads.

[0007] As a further improvement, the base includes a locking rod, a probe rod, a contact plate, and a rubber pad; the probe rod is conical in shape and made of aluminum, and is integrated with the contact plate, which is cylindrical in shape and made of aluminum; the locking rod has a hemispherical head and a cylindrical lower part, which is larger at the top and smaller at the bottom, and is fixed on the contact plate; the rubber pad passes through the probe rod and is fitted onto the contact plate; the two sides of the base are fixedly connected to the measurement and control section through retractable rubber.

[0008] As a further improvement, the measuring rope includes a water inlet pipe, a wire, and a second connector. The measuring rope can be customized in length according to the intended use, and the material is a stretchable and non-deformable transparent plastic. The water inlet pipe is hollow, and the wire is located on both sides of the water inlet pipe and consists of two wires made of copper. The second connector has an internal thread. The lower part of the measuring rope is connected to the depth measuring probe through the second connector and the first connector.

[0009] As a further improvement, the coil signal receiver includes a wire, coil one, coil two, roller, rotating handle, threaded lock, fixed handle, switch, battery slot, indicator light, sound alarm, horizontal plate, and roller.

[0010] As a further improvement, the first and second reels are integrated with the roller, which is a hollow cylinder. The first reel is hollow in the middle and made of hard plastic. The rotating handle is fixedly connected to the middle of the second reel. The fixed handle is fixedly connected to the horizontal plate by threads. The horizontal plate is connected to the first reel by a roller, and the reel signal receiver can be rotated through the roller. The switch, battery compartment, indicator light, and audible alarm are all located inside the second reel. The roller is fixedly connected to the measuring rope near the second reel. The roller is connected to the horizontal plate by a bearing. The roller is hollow and has a vacuum mesh front end.

[0011] A method for operating a multifunctional handheld depth sounder, characterized by the following steps:

[0012] Step 1: Connect the measuring rope to the depth sounding probe and install the battery to complete the installation of the multi-functional handheld depth sounder;

[0013] Step 2: Move the striking pin to keep the depth sounding probe in the open position;

[0014] Step 3: Turn on the switch, rotate the threaded lock to allow the reel to rotate; turn the handle to lower the measuring rope into the well.

[0015] Step 4: Measuring well depth: When the base of the depth sounding probe touches the bottom of the well, the base is connected to the measurement and control section through the lock hole, the striker, and the locking rod. The probe rod pushes the conductive plate upward so that the conductive plate contacts the probe, connecting the wires. At this time, the indicator light on the wire reel lights up, the sound alarm sounds, and the scale value at the wellhead is read. This value is the well depth.

[0016] Step 5: Determine water depth and water level burial depth: Rotate the handle in the opposite direction to wind the measuring rope onto the drum. While winding up the measuring rope, pay attention to the water level in the inlet pipe. Finally, read the scale of the water level in the inlet pipe. This value is the water depth. The well depth minus the water depth is the water level burial depth.

[0017] Step Six: Turn off the power, wrap the measuring rope completely around the drum, pull the striker to keep the depth sounding probe open, and release the water from the inlet pipe to complete the test.

[0018] The beneficial effects of this invention are as follows: This invention utilizes the electrical conductivity of water and the uniformity of groundwater level to design a multifunctional handheld depth sounder. This invention can accurately measure the water depth, well depth, and water level depth of boreholes and wells in a single measurement. Compared with existing technologies, the technical solution of this invention can simultaneously obtain multiple elements such as the water depth, well depth, and water level depth of boreholes and wells. Furthermore, the device features a replaceable depth sounding probe, making it more economical and convenient than existing probe-and-rope integrated systems, and allowing for reuse. The entire experimental device is integrated into a single unit, making it easy to carry and demonstrating excellent performance in hydrogeological surveys. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the coil signal receiver structure of a multifunctional handheld depth sounder device and its operation method according to the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the depth measuring probe of the multifunctional handheld depth sounder device and its operation method of the present invention.

[0021] Figure 3 This is a partial structural diagram of the depth-sensing probe of a multifunctional handheld depth sounder device and its operation method according to the present invention.

[0022] Figure 4 This is a partial structural diagram of a multifunctional handheld depth sounder device and its operation method according to the present invention. Figure 1 ;

[0023] Figure 5 This is a partial structural diagram of a multifunctional handheld depth sounder device and its operation method according to the present invention. Figure 2 .

[0024] As shown in the figure: 1. Depth sounding probe; 2. Measurement and control section; 3. Base; 4. Water inlet pipe; 5. Conductivity chamber; 6. Conductivity sheet; 7. Probe; 8. Lock hole; 9. Strike pin; 10. Piston buckle; 11. Locking rod; 12. Probe rod; 13. Contact plate; 14. Wire; 15. Rubber pad; 16. Lead ring; 17. Measuring rope; 18. Line reel signal receiver; 19. Line reel one; 20. Roller; 21. Rotating handle; 22. Threaded lock; 23. Fixed handle; 24. Switch; 25. Battery slot; 26. Indicator light; 27. Sound alarm; 28. Telescopic rubber; 29. ​​Line reel two; 30. Connector two; 31. Horizontal plate; 32. Roller; 33. Connector one; 34. Bearing. Detailed Implementation

[0025] To make the technical problems, solutions, and beneficial effects of this application clearer, the following detailed description of a multifunctional handheld depth sounder device and its operation method, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] The present invention is not limited to the following embodiments, and the specific embodiments can be determined according to the technical solution of the present invention and the actual situation.

[0027] A multifunctional handheld depth sounding device comprises a depth sounding probe 1, a sounding rope 17, and a reel signal receiver 18. Its features include: the depth sounding probe 1 and the reel signal receiver 18 are fixedly connected at both ends of the sounding rope 17; the front end of the sounding rope 17 is fixedly connected to the reel signal receiver 18, and the tail end of the sounding rope 17 is threadedly connected to the depth sounding probe 1; the sounding rope 17 is made of hollow, transparent, and non-deformable plastic material, with two copper wires on both sides, and meter markings are printed on the outside of the sounding rope 17 from bottom to top; the wires and outer sheath of the sounding rope 17 are fixedly connected to the roller 20 of the reel signal receiver 18, and the wires 14 in the sounding rope 17 are correspondingly connected to the wires 14 in the reel 29; the sounding rope 17 can be manually wound onto the roller 20 of the reel signal receiver 18; and the lower end of the sounding rope 17 is threadedly connected to the depth sounding probe 1.

[0028] The depth sounding probe 1 of this invention includes a control section 2 and a base 3. The control section 2 is composed of a conductivity chamber 5 and a rectangular copper conductivity sheet 6. The outer wall of the conductivity chamber 5 is sealed to the conductivity sheet 6 by a telescopic rubber 28. The right side of the conductivity sheet 6 is fixedly connected to the inner ring wall by a piston buckle 10. The piston buckle 10 is connected to the wire 14 inside. Four columnar locking holes 8 are evenly distributed at the bottom of the control section 2. Four pull-ring type strike pins 9 are inserted into the locking holes 8 from the outside. A lead ring is fitted on the outside of the control section 2. The base 3 is composed of an aluminum vertically movable conical piston rod and a cylindrical base. The conical piston rod is fixedly connected to the cylindrical base. The whole is fixedly connected to the two sides of the bottom of the depth sounding probe 1 by a telescopic rubber 28. Four buckle-shaped locking rods 11 with larger upper part and smaller lower part are evenly distributed on the upper part of the contact plate 13. The base can be sealed and connected to the bottom circular groove of the upper part of the depth sounding probe 1 when the compressible rubber is contracted.

[0029] The measurement and control section 2 of this invention includes a water inlet pipe 4, a conductivity chamber 5, a conductivity sheet 6, a probe 7, a lock hole 8, a striker 9, a piston buckle 10, a wire 14, a lead ring 16, a telescopic rubber 28, and a connector 33. The conductivity chamber 5 is hollow and sealed, with an outer wall of compressible rubber. A portion of the conductivity sheet 6 extends into the conductivity chamber 5, and the inner wall of the conductivity chamber 5 is fixedly attached to the contact portion of the conductivity sheet 6. The conductivity chamber 5 has a probe 7, which is connected to the wire 14. The other end of the conductivity sheet 6 is fixed to the inner wall of the water inlet pipe 4 by the piston buckle 10. The lower part of the measurement and control section 2 has four equiaxially distributed cylindrical lock holes 8. The striker 9 extends into the lock holes 8 through the outside of the measurement and control section 2, and a pull ring is connected to the outer end of the striker 9. The upper part of the measurement and control section 2 is wrapped with a lead ring 16. The internal structure of the connector 33 is the same as that of the measuring rope 17, and the outside is made of copper thread.

[0030] The base 3 described in this invention includes a locking rod 11, a probe rod 12, a contact plate 13, and a rubber pad 15. The probe rod is conical and made of aluminum, and is integral with the contact plate 13. The contact plate 13 is cylindrical and made of aluminum. The locking rod 11 has a hemispherical head and a cylindrical lower part, which is larger at the top and smaller at the bottom. It is fixed on the contact plate 13. The rubber pad 15 passes through the probe rod 12 and is fitted onto the contact plate 13. The two sides of the base 3 are fixedly connected to the measurement and control section 2 by retractable rubber 28.

[0031] The measuring rope 17 described in this invention includes a water inlet pipe 4, a wire 14, and a connector 2 30. The measuring rope 17 can be customized in length according to its intended use, and is made of a stretchable and non-deformable transparent plastic material. The water inlet pipe 4 is hollow, and the wire 14 consists of two wires on both sides of the water inlet pipe 4. The wire 14 is made of copper, and the connector 2 30 has an internal thread. The lower part of the measuring rope 17 is connected to the depth measuring probe 1 through the connector 2 30 and the connector 1 33. The length of the measuring rope 17 can be designed according to the user's needs.

[0032] The coil signal receiver 18 described in this invention includes a wire 14, a coil one 19, a coil two 29, a roller 20, a rotating handle 21, a threaded lock 22, a fixed handle 23, a switch 24, a battery slot 25, an indicator light 26, a sound alarm 27, a horizontal plate 31, and a roller 32.

[0033] In this invention, the first spool 19 and the second spool 29 are integrated with the roller 20. The roller 20 is a hollow cylinder. The first spool 19 is hollow in the middle and made of hard plastic. The rotating handle is fixedly connected to the middle of the second spool 29. The fixed handle 23 is fixedly connected to the horizontal plate 31 by threads. The horizontal plate 31 is connected to the first spool 19 by the roller 32. The spool signal receiver 18 can be rotated by the roller 32. The switch 24, battery slot 25, indicator light 26, and sound alarm 27 are all located inside the second spool 29. The roller 20 is fixedly connected to the measuring rope 17 near the second spool 29. The roller 32 is connected to the horizontal plate 31 by the bearing 34. The roller 32 is hollow and the front end is a vacuum mesh.

[0034] A method for operating a multifunctional handheld depth sounder, characterized by the following steps:

[0035] Step 1: Connect the measuring rope 17 to the depth sounding probe 1 and install the battery to complete the installation of the multi-functional handheld depth sounder;

[0036] Step 2: Pull the firing pin 9 to keep the depth sounding probe 1 in the open position;

[0037] Step 3: Turn on switch 24, rotate threaded lock 22 to allow the reel to rotate; rotate handle 21 to lower measuring rope 17 into the well.

[0038] Step 4: Measuring well depth: When the base 3 of the depth measuring probe 1 contacts the bottom of the well, the base 3 is connected to the measurement and control section 2 through the lock hole 8, the striker 9, and the locking rod 11. The probe rod 12 pushes the conductive plate 6 upward, so that the conductive plate 6 contacts the probe 7, and the wires are connected. At this time, the indicator light 26 on the wire reel lights up, the sound alarm 27 sounds, and the scale value at the wellhead is read. This value is the well depth.

[0039] Step 5: Determine water depth and water level burial depth: Rotate the handle 21 in the opposite direction to wind the measuring rope 17 onto the drum 20. While winding up the measuring rope 17, pay attention to the water level in the inlet pipe 4. Finally, read the scale of the water level in the inlet pipe 4. This value is the water depth. The well depth minus the water depth is the water level burial depth.

[0040] Step 6: Turn off the power, wrap the measuring rope 17 completely around the drum 20, pull the striker 9 to keep the depth measuring probe 1 open, release the water from the inlet pipe 4, and complete this test.

[0041] Example:

[0042] First, connect the measuring rope 17 to the depth sounding probe 1, and install the battery to complete the installation of the multi-functional handheld depth sounder; pull the striker 9 to keep the depth sounding probe 1 in the open state; turn on the switch 24, rotate the threaded lock 22 to allow the reel to rotate; rotate the handle 21 to lower the measuring rope 17 into the well; next, when the base 3 of the depth sounding probe 1 contacts the bottom of the well, the base 3 and the control section 2 are connected through the lock hole 8, striker 9, and lock rod 11. The probe rod 12 pushes the conductive plate 6 upward, so that the conductive plate 6 contacts the probe 7, connecting the wires. When the indicator light 26 on the timeline panel lights up and the alarm 27 sounds, read the scale value at the wellhead; this value is the well depth. Then, rotate the handle 21 in the opposite direction to wind the measuring rope 17 onto the drum 20. While winding the measuring rope 17, monitor the water level in the inlet pipe 4. Finally, read the scale value of the water level in the inlet pipe 4; this value is the water depth. The well depth minus the water depth is the burial depth of the water level. Finally, turn off the power, wind the measuring rope 17 completely onto the drum 20, pull the striker 9 to keep the depth measuring probe 1 open, and release the water from the inlet pipe 4 to complete this test.

[0043] The present invention provides a multifunctional handheld water depth sounder and its operating method, which can accurately measure the water depth, well depth and water level depth of boreholes and wells in one measurement, which is convenient and efficient. The replaceable well depth probe is more economical and convenient, and can be reused. It is also easy to carry and has a good effect in hydrogeological surveys.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional handheld depth sounding device, comprising a depth sounding probe (1), a sounding rope (17), and a line reel signal receiver (18), characterized in that: The depth sounding probe (1) and the reel signal receiver (18) are fixedly connected at both ends of the measuring rope (17). The front end of the measuring rope (17) is fixedly connected to the reel signal receiver (18), and the tail end of the measuring rope (17) is threaded onto the depth sounding probe (1). The measuring rope (17) is made of hollow, transparent, and non-deformable plastic material. Two copper wires are provided on both sides of the measuring rope (17), and meter markings are marked on the outside of the measuring rope (17) from bottom to top. The wires and outer wrapping layer of the measuring rope (17) are fixedly connected to the roller (20) of the reel signal receiver (18), and the wires (14) in the measuring rope (17) are correspondingly connected to the wires (14) in the reel (29). The measuring rope (17) can be manually wound. The measuring rope (17) is wound onto the roller (20) of the signal receiver (18) on the reel; the lower end of the measuring rope (17) is connected to the depth measuring probe (1) by a thread, the depth measuring probe (1) includes a measuring and control section (2) and a base (3); the measuring and control section (2) is composed of a conductivity chamber (5) and a rectangular copper conductivity sheet (6), the outer wall of the conductivity chamber (5) is sealed to the conductivity sheet (6) by a telescopic rubber (28), the right side of the conductivity sheet (6) is fixedly connected to the inner ring wall by a piston buckle (10), the piston buckle (10) is connected to the wire (14) inside; four columnar lock holes (8) are evenly distributed at the bottom of the measuring and control section (2), and four pull-ring type strikers (9) are inserted into the lock holes (8) from the outside; the measuring and control section (2) is covered with a lead ring, and the base (3) It is composed of an aluminum vertically movable conical piston rod and a cylindrical base. The conical piston rod is fixedly connected to the cylindrical base. The whole is fixedly connected to the two sides of the bottom of the depth sounding probe (1) through the telescopic rubber (28). The upper part of the contact plate (13) is evenly distributed with four buckle-shaped locking rods (11) that are larger at the top and smaller at the bottom. The cylindrical base can be sealed and connected with the bottom circular groove of the upper part of the depth sounding probe (1) under the condition of compressible rubber contraction. The measurement and control section (2) includes a water inlet pipe (4), an electrical conductivity chamber (5), an electrical conductivity sheet (6), a probe (7), a lock hole (8), a striker (9), a piston buckle (10), a wire (14), a lead ring (16), a telescopic rubber (28), and a connector (33). The conductor chamber (5) is hollow and sealed, and the outer wall is made of compressible rubber. A part of the conductive sheet (6) extends into the conductor chamber (5), and the inner wall of the conductor chamber (5) is fixedly pasted to the contact part of the conductive sheet (6). The conductor chamber (5) has a probe (7), and the probe (7) is connected to the wire (14). The other end of the conductive sheet (6) is fixed to the inner wall of the water inlet pipe (4) by a piston buckle (10). The lower part of the measurement and control section (2) has four cylindrical lock holes (8) distributed equiaxially. The striker (9) extends into the lock hole (8) through the outside of the measurement and control section (2), and a pull ring is connected to the outer end of the striker (9). The upper part of the measurement and control section (2) is wrapped with a lead ring (16). The internal structure of the connector (33) is the same as that of the measuring rope (17), and the outside is made of copper thread.

2. The multifunctional handheld depth sounder device according to claim 1, characterized in that: The base (3) includes a locking rod (11), a probe rod (12), a contact plate (13), and a rubber pad (15). The probe rod is conical and made of aluminum. It is integrated with the contact plate (13). The contact plate (13) is cylindrical and made of aluminum. The locking rod (11) has a hemispherical head and a cylindrical lower part, with a larger upper part and a smaller lower part. It is fixed on the contact plate (13). The rubber pad (15) passes through the probe rod (12) and is fitted on the contact plate (13). The two sides of the base (3) are fixedly connected to the measurement and control section (2) through stretchable rubber (28).

3. The multifunctional handheld depth sounder device according to claim 1, characterized in that: The measuring rope (17) includes a water inlet pipe (4), a wire (14), and a connector (30). The measuring rope (17) can be customized in length according to the purpose of use. The material is a transparent plastic material that is stretchable and non-deformable. The water inlet pipe (4) is hollow. The wire (14) is located on both sides of the water inlet pipe (4) and consists of two wires. The material is copper. The connector (30) is an internal spiral thread. The lower part of the measuring rope (17) is connected to the depth measuring probe (1) through the connector (30) and the connector (33).

4. The multifunctional handheld depth sounder device according to claim 1, characterized in that: The coil signal receiver (18) includes a wire (14), coil one (19), coil two (29), roller (20), rotating handle (21), threaded lock (22), fixed handle (23), switch (24), battery slot (25), indicator light (26), sound alarm (27), horizontal plate (31), and roller (32).

5. The multifunctional handheld depth sounder device according to claim 4, characterized in that: The first spool (19) and the second spool (29) are integrated with the roller (20). The roller (20) is a hollow cylinder. The first spool (19) is hollow in the middle and made of hard plastic. The rotating handle is fixedly connected to the middle of the second spool (29). The fixed handle (23) is fixedly connected to the horizontal plate (31) by threads. The horizontal plate (31) is connected to the first spool (19) by roller (32). The spool signal receiver (18) can be rotated by roller (32). The switch (24), battery slot (25), indicator light (26), and sound alarm (27) are all located inside the second spool (29). The roller (20) is fixedly connected to the measuring rope (17) near the second spool (29). The roller (32) is connected to the horizontal plate (31) by bearing (34). The roller (32) is hollow and the front end is a vacuum mesh.

6. The operating method of the multifunctional handheld depth sounder device according to claim 1, characterized in that: Includes the following steps: Step 1: Connect the measuring rope (17) to the depth sounding probe (1) and install the battery to complete the installation of the multi-functional handheld depth sounder; Step 2: Pull the striker (9) to keep the depth sounding probe (1) in the open position; Step 3: Turn on the switch (24), rotate the threaded lock (22) to make the reel rotate; turn the handle (21) to lower the measuring rope (17) into the well. Step 4: Measuring well depth: When the base (3) of the depth measuring probe (1) touches the bottom of the well, the base (3) and the measurement and control section (2) are connected through the lock hole (8), the striker (9), and the lock rod (11). The probe rod (12) pushes the conductive plate (6) upward, so that the conductive plate (6) contacts the probe (7) and the wires are connected. At this time, the indicator light (26) on the wire reel lights up, the sound alarm (27) sounds, and the scale value at the wellhead is read. This value is the well depth. Step 5: Determine water depth and water level burial depth: Rotate the handle (21) in the opposite direction to wind the measuring rope (17) onto the drum (20). While winding up the measuring rope (17), pay attention to the water level in the inlet pipe (4). Finally, read the scale of the water level in the inlet pipe (4). This value is the water depth. The well depth minus the water depth is the water level burial depth. Step 6: Turn off the power, wrap the measuring rope (17) all the way around the drum (20), pull the striker (9) to keep the depth measuring probe (1) open, release the water from the inlet pipe (4) and complete the test.

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