Salinity meter

Abstract

The utility model discloses a salinity meter which comprises a shell and a test probe, the test probe is sleeved at the front end of the shell in a pluggable manner, an electrode stem is mounted inside the test probe, a gold-plated electrode is fixed at the front end of the electrode stem, the gold-plated electrode penetrates through the test probe and faces outwards, a circuit board is fixed inside the shell, and an LCD (liquid crystal display) screen is mounted on the circuit board. The shell is provided with a display window, the LCD display screen is located on the display window, and a pen cap is arranged at the front end of the shell and connected with the shell in a clamped mode. The surface of the gold-plated electrode in the salinity meter is convenient to clean, so that the test precision is ensured, the test probe is sleeved on the shell in a pluggable manner, the replacement is convenient, the whole structure is simple, the size is small, the carrying is convenient, and the use requirements of a user in different scenes are met.

Description

Technical Field

[0001] This utility model relates to the technical field of salinity detection, and in particular to a salinity meter. Background Technology

[0002] A salinity meter is an instrument used to quickly determine the weight percentage concentration or refractive index of a salt (sodium chloride) solution. During use, conventional salinity meters suffer from several drawbacks. The test probe is difficult to clean, leading to contaminated electrodes that affect the accuracy of the measurement. Furthermore, the complex structure of the test probe makes replacement inconvenient. Utility Model Content

[0003] One objective of this invention is to provide a salinity meter with an electrode surface that is easy to clean, ensuring testing accuracy, and a pluggable test probe that is easy to replace.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A salinity meter includes a housing and a test probe. The test probe is pluggably fitted onto the front end of the housing. An electrode rod is installed inside the test probe, and a gold-plated electrode is fixed to the front end of the electrode rod. The gold-plated electrode passes through the test probe outward. A circuit board is fixed inside the housing, and an LCD display screen is mounted on the circuit board. A display window is provided on the housing, and the LCD display screen is located on the display window. A pen cap is provided at the front end of the housing, and the pen cap is snapped into the housing.

[0006] As a preferred technical solution, the front end of the circuit board is provided with an electrode spring, which is elastically engaged with the rear end of the electrode rod.

[0007] As a preferred technical solution, a sealing gasket is provided at the front end of the housing, the test probe is pressed on the sealing gasket, and a sealing washer is fitted at the rear end of the probe. The outer side of the sealing washer is elastically connected to the inner sidewall of the housing.

[0008] As a preferred technical solution, a lens is installed at the upper end of the housing, and the lens is located within the display window.

[0009] As a preferred technical solution, a silicone button is installed on the housing, and the silicone button is elastically connected to the circuit board.

[0010] As a preferred technical solution, the rear end of the housing is provided with a back cover and a pen cap, the front end of the back cover is snapped into the inside of the housing, the pen cap is fitted onto the rear end of the back cover, and a battery is installed inside the back cover.

[0011] As a preferred technical solution, a battery spring is inserted at the rear end of the circuit board, and the battery spring passes through the rear cover and is electrically connected to the battery.

[0012] As a preferred technical solution, a connecting pin is installed inside the test probe, and a temperature sensor is installed in the gold-plated electrode. One end of the temperature sensor is connected to the electrode rod, and the other end of the temperature sensor is connected to the connecting pin.

[0013] The beneficial effects of this utility model are as follows: It provides a salinity meter in which the gold-plated electrode surface is easy to clean, thereby ensuring the accuracy of the test. The test probe is plugged into the outer shell, making it easy to replace. The overall structure is simple, the size is small, and it is easy to carry, meeting the user's needs in different scenarios. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a diagram illustrating the usage status of a salinity meter as described in the embodiment.

[0016] Figure 2 This is an overall structural diagram of a salinity meter as described in the embodiment;

[0017] Figure 3 This is an exploded view of a salinity meter as described in the embodiment;

[0018] Figure 4 This is a diagram illustrating the internal structure of a salinity meter as described in the embodiment.

[0019] Figure 5 This is a diagram of the internal structure of the test probe described in the embodiment.

[0020] Figures 1 to 5 middle:

[0021] 1. Housing; 2. Test probe; 3. Electrode rod; 4. Gold-plated electrode; 5. Circuit board; 6. LCD display screen; 7. Display window; 8. Pen cap; 9. Electrode spring; 10. Sealing gasket; 11. Sealing gasket; 12. Lens; 13. Silicone button; 14. Back cover; 15. Pen cap; 16. Battery; 17. Battery spring; 18. Connecting pin; 19. Temperature sensor. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5As shown, in this embodiment, a salinity meter includes a housing 1 and a test probe 2. The test probe 2 is pluggably fitted onto the front end of the housing 1. An electrode rod 3 is installed inside the test probe 2. A gold-plated electrode 4 is fixed to the front end of the electrode rod 3. The gold-plated electrode 4 passes through the test probe 2 and extends outward. A circuit board 5 is fixed inside the housing 1. An LCD display screen 6 is installed on the circuit board 5. A display window 7 is provided on the housing 1. The LCD display screen 6 is located on the display window 7. A pen cap 8 is provided at the front end of the housing 1. The pen cap 8 is snapped into the housing 1.

[0024] In the above-described structural state, after opening the pen cap 8, the test probe 2 is exposed. Depending on the usage, the gold-plated electrode 4 on the surface of the test probe 2 can be cleaned. Alternatively, the test probe 2 can be directly pulled out from the outer casing 1 for easy replacement. The pen cap 8 protects the test probe 2 from being clean. The salinity after the test is displayed on the LCD screen 6 on the circuit board 5, and the user can directly see it in the display window 7.

[0025] Specifically, the front end of the circuit board 5 is provided with an electrode spring 9, which is elastically engaged with the rear end of the electrode rod 3. The front end of the housing 1 is provided with a sealing gasket 10, and the test probe 2 is pressed on the sealing gasket 10. The rear end of the probe is fitted with a sealing gasket 11, and the outer side of the sealing gasket 11 is elastically connected to the inner sidewall of the housing 1. A lens 12 is installed at the upper end of the housing 1, and the lens 12 is located inside the display window 7. A silicone button 13 is installed on the housing 1, and the silicone button 13 is elastically connected to the circuit board 5. The rear end of the housing 1 is provided with a back cover 14 and a pen cap 15. The front end of the back cover 14 is engaged with the inner side of the housing 1, and the pen cap 15 is fitted on the rear end of the back cover 14. A battery 16 is installed inside the back cover 14. A battery spring 17 is inserted into the rear end of the circuit board 5, and the battery spring 17 passes through the back cover 14 and is electrically connected to the battery 16.

[0026] After pressing the silicone button 13, the device can be powered on via the circuit board 5. Place the test probe 2 into the saline solution to be tested. The salinity signal is transmitted to the circuit board 5 via the electrode rod 3 through the gold-plated electrode 4. After automatic testing, the test result will be locked and displayed. Remove the probe from the saline solution to be tested. After the display period expires, the device will automatically enter the detection state and can be placed back into the saline solution to be tested. Pressing the silicone button 13 a second time will enter the power-off state and automatically power off.

[0027] The sealing gasket 10 and sealing washer 11 seal the connection between the test probe 2 and the housing 1, ensuring that the test probe 2 can be easily inserted and removed while protecting the internal circuit board 5. The battery 16 can be installed and replaced by opening the pen cover 15 at the rear. The power provided by the battery 16 is input into the circuit board 5 through the battery spring 17.

[0028] The test probe 2 is equipped with a connecting pin 18, and the gold-plated electrode 4 is equipped with a temperature sensor 19. One end of the temperature sensor 19 is connected to the electrode rod 3, and the other end of the temperature sensor 19 is connected to the connecting pin 18. The temperature sensor 19 is a thermistor. The connection between the temperature sensor 19, the electrode rod 3, and the connecting pin 18 is made by a wire. The wire is not polarized. The temperature sensor 19 measures the temperature of the liquid to be tested. Different temperatures will cause changes in the salt concentration of the liquid. It can accurately tell the user the temperature corresponding to the concentration of the liquid to be tested.

[0029] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles applied thereto. Within the scope of the technology disclosed in this utility model, any variations or substitutions that are easily conceived by those skilled in the art should be covered within the protection scope of this utility model.

Claims

1. A salinity meter, characterized in that, The device includes a housing and a test probe. The test probe is plugged into the front end of the housing. An electrode rod is installed inside the test probe, and a gold-plated electrode is fixed to the front end of the electrode rod. The gold-plated electrode passes through the test probe outward. A circuit board is fixed inside the housing, and an LCD display screen is mounted on the circuit board. A display window is provided on the housing, and the LCD display screen is located on the display window. A pen cap is provided at the front end of the housing, and the pen cap is snapped into the housing.

2. The salinity meter according to claim 1, characterized in that, The front end of the circuit board is provided with an electrode spring, which is elastically engaged with the rear end of the electrode rod.

3. A salinity meter according to claim 1, characterized in that, A sealing gasket is provided at the front end of the housing, the test probe is pressed on the sealing gasket, and a sealing washer is fitted at the rear end of the test probe. The outer side of the sealing washer is elastically connected to the inner sidewall of the housing.

4. A salinity meter according to claim 1, characterized in that, A lens is mounted on the upper part of the housing, and the lens is located within the display window.

5. A salinity meter according to claim 1, characterized in that, A silicone button is installed on the outer casing, and the silicone button is elastically connected to the circuit board.

6. A salinity meter according to claim 1, characterized in that, The rear end of the housing is provided with a back cover and a pen cap. The front end of the back cover is snapped into the inside of the housing, and the pen cap is fitted onto the rear end of the back cover. A battery is installed inside the back cover.

7. A salinity meter according to claim 6, characterized in that, A battery spring is inserted at the rear end of the circuit board, and the battery spring passes through the rear cover and is electrically connected to the battery.

8. A salinity meter according to claim 1, characterized in that, The test probe is equipped with a connecting pin, and the gold-plated electrode is equipped with a temperature sensor. One end of the temperature sensor is connected to the electrode rod, and the other end of the temperature sensor is connected to the connecting pin.

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