Liquid resistance detector

Abstract

The utility model provides a liquid resistance detector. The liquid resistance detector comprises a shell, a host, a liquid pipeline, a test probe and a display screen, the host is installed in the shell and comprises a main control module, the liquid pipeline is arranged outside the shell and used for conveying to-be-tested liquid, one end of the testing probe is electrically connected with the main control module, and the other end of the testing probe extends into the liquid pipeline to detect the specific resistance of the to-be-tested liquid and generates and sends a detection signal to the main control module. The display screen is arranged on the outer side of the shell and electrically connected with the main control module. The main control module receives the detection signal, calculates a detection value according to the detection signal, judges whether the specific resistance is lower than or exceeds a preset value or not according to the detection value, and sends an alarm signal on a display screen if the specific resistance is lower than or exceeds the preset value, so that the liquid resistance value can be monitored at any time, and false alarms are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance test technical field especially a liquid resistance detector. BACKGROUND

[0002] In the semiconductor or precision machinery manufacturing plant, usually configured with cooling system and pipeline system, the cooling water is stored in the water tank of cooling water tower, and uses steel pipe or plastic pipe cooling pipeline to transport liquid raw materials or cooling water. In order to ensure the stability of the process, the system will monitor the liquid impedance through the liquid monitoring device, and timely find the abnormality to avoid the influence on the process.

[0003] Therefore, the industry urgently needs to seek a liquid resistance detector that can provide real-time monitoring and alarm function for liquid detection, to address the problem of liquid impedance as an effective countermeasure, so that the various difficulties and deficiencies encountered in the above known technology can be solved. SUMMARY

[0004] In view of the above problems, the purpose of the utility model is to provide a liquid resistance detector, which detects the specific resistance of the liquid to be tested by a test probe, sends the detection signal to the main control module to calculate the detection value, and provides real-time warning by the display screen, so as to monitor the liquid resistance value at any time and reduce the occurrence of false alarms.

[0005] In order to achieve the above purpose, the utility model provides a liquid resistance detector, which includes a shell, a host, a liquid pipeline, a test probe and a display screen. Wherein, the host is installed in the shell, and the host includes a main control module. The liquid pipeline is arranged outside the shell to circulate the liquid to be tested. One end of the test probe is electrically connected to the main control module, and the other end is inserted into the liquid pipeline to detect the specific resistance of the liquid to be tested and generate and send a detection signal to the main control module. The display screen is arranged outside the shell and is electrically connected to the main control module. Wherein, the main control module receives the detection signal to calculate a detection value according to the detection signal, and judges whether the specific resistance is lower than or exceeds a preset set value according to the detection value, if yes, the display screen sends an alarm signal.

[0006] In the embodiment of the utility model, the aforementioned host further includes a power input module, a relay control module, a current output module, a temperature measurement module and an automatic temperature compensation module, the power input module is connected with the external power supply, and the main control module is electrically connected with the power input module, the relay control module, the current output module, the temperature measurement module and the automatic temperature compensation module respectively.

[0007] In the embodiment of the utility model, the aforementioned shell further has an electric panel, which is connected between the external power supply and the power input module.

[0008] In an embodiment of this utility model, a power switch is also provided on the front of the aforementioned housing, and the power switch is electrically connected to the power input module.

[0009] In an embodiment of this utility model, a plurality of connection ports are provided on one side of the aforementioned housing. These connection ports are respectively connected to at least one signal output line, one power line and one test probe. The signal output line is electrically connected to the main control module and the power line is electrically connected to the power input module.

[0010] In an embodiment of this utility model, the aforementioned main control module controls the relay control module to switch to the off state or the first / second mode, and displays the relevant information on the display screen.

[0011] In an embodiment of this utility model, when the aforementioned relay control module is switched to the off state, the relay control module shuts down the relay.

[0012] In the embodiments of this utility model, when the aforementioned relay control module switches to the first / second mode, the first / second mode includes mode one and mode two. In mode one, the relay control module activates the relay when the detected value is lower than the set value, and the main control module controls the display screen to issue a low point warning. The relay is deactivated when the detected value is higher than the sum of the set value and the hysteresis value. In mode two, the relay control module activates the relay when the detected value is higher than the set value, and the main control module controls the display screen to issue a high point warning. The relay is deactivated when the detected value is lower than the difference between the set value and the hysteresis value.

[0013] In an embodiment of this utility model, the aforementioned main control module detects the current temperature of the test probe through the temperature measurement module and compares the detected value with the resistivity value at the current temperature.

[0014] In an embodiment of this utility model, the aforementioned main control module performs temperature compensation on the resistivity value at the current temperature through an automatic temperature compensation module to obtain the resistivity value at the reference temperature.

[0015] In an embodiment of this utility model, the aforementioned test probe and liquid pipeline are connected as one unit by welding.

[0016] The advantages of this invention are as follows: The liquid resistance detector provided by this invention detects the specific resistance of the liquid under test using a test probe, then sends the detection signal to the main control module to calculate the detection value, and provides real-time alerts on the display screen. This allows for continuous monitoring of the liquid resistance, reducing the occurrence of false alarms. This invention is applicable to liquid monitoring in various industries, including semiconductors and precision machinery, and can monitor all liquids with impedance.

[0017] The following detailed description, with reference to specific embodiments and accompanying drawings, will make it easier to understand the purpose, technical content, features, and effects achieved by this utility model. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the appearance of the liquid resistance detector provided in an embodiment of this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the liquid resistance detector provided in an embodiment of this utility model.

[0020] Figure 3 This is a block diagram of the circuit structure of a liquid resistance detector provided in an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the combination of the liquid pipeline and the test probe of the liquid resistance detector provided in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the display screen of the liquid resistance detector provided in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the installation of the liquid resistance detector provided in an embodiment of this utility model.

[0024] Icon and symbol explanation:

[0025] 1: Liquid resistance detector

[0026] 2: Machine

[0027] 3: Machine piping

[0028] 4: Processing Room

[0029] 10: Shell

[0030] 13: Connection Port

[0031] 14: Signal output line

[0032] 15: Power cord

[0033] 20: Host

[0034] 22: Power Input Module

[0035] 23: Relay Control Module

[0036] 24: Current Output Module

[0037] 25: Temperature Measurement Module

[0038] 26: Automatic Temperature Compensation Module

[0039] 30: Liquid piping

[0040] 31: Water outlet

[0041] 32:Water inlet

[0042] 33: Test port

[0043] 40: Test probe

[0044] 50: Display screen

[0045] 60: Power switch

[0046] 70: Electrical panel

[0047] 101: Measurement Status / Alarm Status Block

[0048] 102: Relay 1 Opening Block

[0049] 103: Relay II Opening Block

[0050] 104: Current Output Block

[0051] 105: Conductivity / Specific Resistance Measurement Block

[0052] 106: Temperature Measurement Block

[0053] 107: Automatic Temperature Compensation Block

[0054] 108: Conductivity / Specific Resistivity Unit Block

[0055] 109: Temperature unit block Detailed Implementation

[0056] The embodiments of this utility model will be described by way of appendix Figures 1-6 Further explanation is provided. Wherever possible, the same reference numerals in the drawings and description represent the same or similar components. In the drawings, shapes and thicknesses may be exaggerated for simplicity and convenience. It is understood that components not specifically shown in the drawings or described in the description are well known to those skilled in the art. Those skilled in the art can make various changes and modifications based on the content of this utility model.

[0057] The technical solutions adopted in the embodiments of this utility model are used to more clearly illustrate the technical solutions of this utility model, and are therefore only examples. Unless otherwise specified, they should not be used to limit the scope of protection of this utility model. In the description of the specification, many specific details are provided to give the reader a more complete understanding of this utility model; however, this utility model may still be implemented even if some or all of the specific details are omitted. Furthermore, well-known steps or components are not described in the details to avoid unnecessarily limiting this utility model. Unless otherwise specified, the embodiments and features in the embodiments of this utility model can be arbitrarily combined with each other. Unless otherwise specified, all technical and scientific terms used in this utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains.

[0058] Please refer to Figures 1 to 4 . Figure 1 This is a schematic diagram of the appearance of the liquid resistance detector provided in an embodiment of this utility model; Figure 2 This is a cross-sectional schematic diagram of the liquid resistance detector provided in an embodiment of this utility model; Figure 3 This is a block diagram of the circuit structure of a liquid resistance detector provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the combination of the liquid pipeline and test probe of the liquid resistance detector provided in an embodiment of this utility model. The liquid resistance detector 1 in this embodiment is mainly composed of a housing 10, a main unit 20, a liquid pipeline 30, a test probe 40, and a display screen 50.

[0059] The housing 10 serves as a supporting structure and is typically in the form of a box. In this embodiment, the front of the housing 10 is equipped with a display screen 50 and a power switch 60, while the back of the housing 10 has a plurality of connection ports 13. In this embodiment, there are three connection ports 13, but this is not a limitation. These three connection ports 13 are respectively connected to the signal output line 14, the power cord 15, and the test probe 40. The housing 10 contains a main unit 20 and a power supply panel 70, while the housing 10 contains a liquid pipeline 30 and a test probe 40. The power cord 15 is connected to an external power source (such as AC power) to convert AC power to DC power. The power supply panel 70 receives AC power through the power cord 15. To further explain, the input AC power is 110V~240VAC±10%, 50 / 60Hz.

[0060] The main unit 20 includes a main control module 21, a power input module 22, a relay control module 23, a current output module 24, a temperature measurement module 25, and an automatic temperature compensation module 26 (see...). Figure 3The power input module 22 is electrically connected to the power panel 70 to supply power, and is also electrically connected to the power switch 60 so that it can be started or stopped by the power switch 60. The main control module 21 is electrically connected to the power input module 22, the relay control module 23, the current output module 24, the temperature measurement module 25, and the automatic temperature compensation module 26 to perform various operations. The main control module 21 is also electrically connected to the signal output line 14 to output signals.

[0061] The liquid line 30 is used to transport the liquid to be tested. In this embodiment, the liquid line 30 has an inlet 32, an outlet 31, and a test port 33 (see...). Figure 4 The liquid to be tested enters the liquid pipeline 30 through the inlet 32 ​​and flows out through the outlet 31, while the test probe 40 is installed at the test port 33. Depending on the different pipeline connectors used by the client, this invention allows the liquid pipeline 30 to be used with different types of connectors.

[0062] One end of the test probe 40 is electrically connected to the main control module 21 and the current output module 24, while the other end extends into the test port 33 of the liquid pipeline 30 to contact the liquid to be tested. The main control module 21 controls the current output module 24 to output current to the test probe 40 to detect the specific resistance of the liquid to be tested, and generates and sends a detection signal to the main control module 21 for calculation. In addition, the liquid pipeline 30 and the test probe 40 can be connected as a single unit by welding, and a leak-proof tape can be wrapped around the interface between the two to avoid the risk of liquid leakage.

[0063] The display screen 50 is located on the front of the housing 10 and electrically connected to the main control module 21. It is used to monitor the resistance change of the liquid under test and display whether the liquid impedance is abnormal. When the main control module receives the detection signal, it calculates a detection value based on the detection signal and determines whether the specific resistance is lower or higher than the preset value. If so, an alarm signal is issued on the display screen 50.

[0064] Please refer to Figure 5This is a schematic diagram of the display screen of the liquid resistance detector provided in an embodiment of the present invention. In this embodiment, the display screen 50 can use graphics or animation effects to present the level of the detection value or provide a warning in the measurement status / alarm status block 101. The relay one on block 102 and relay two on block 103 will display whether the relay is on or off. The current output block 104 will display the current value output by the current output module to the test probe 40. The conductivity / resistivity measurement block 105 will display the detection value calculated by the main control module 21, and the conductivity / resistivity unit block 108 will display the unit of the detection value. In addition, the temperature measurement block 106 will display the temperature of the test probe measured by the temperature measurement module, and the temperature unit block 109 will display the temperature unit. The automatic temperature compensation block 107 will display whether the automatic temperature compensation function is on or off.

[0065] Further explanation: In this embodiment, the main control module 21 controls the relay control module to switch between an off state and a first / second mode, and displays relevant information on the display screen 50. When the relay control module is switched to the off state, it shuts down relay one and relay two. When the relay control module is switched to the first / second mode, the first / second mode includes mode one and mode two. In mode one, the relay control module activates relay one when the detected value is lower than a set value, and the main control module controls the display screen 50 to issue a low-point warning. Relay one is shut down when the detected value is higher than the sum of the set value and the hysteresis value (i.e., detected value > set value + hysteresis value). In mode two, the relay control module activates relay two when the detected value is higher than a set value, and the main control module controls the display screen 50 to issue a high-point warning. Relay two is shut down when the detected value is lower than the difference between the set value and the hysteresis value (i.e., detected value < set value - hysteresis value).

[0066] To further explain, the main control module 21 detects the current temperature of the test probe 40 through the temperature measurement module 25 and compares the detected value with the resistivity value at the current temperature. When the automatic temperature compensation function is enabled, the main control module 21 will perform temperature compensation on the resistivity value at the current temperature through the automatic temperature compensation module 26 to obtain the resistivity value at the reference temperature.

[0067] Please refer to Figure 6This is a schematic diagram illustrating the installation of a liquid resistance detector provided in an embodiment of the present invention. This embodiment uses a chiller system, commonly used in the semiconductor and precision machinery industries, as an example. In this embodiment, the liquid resistance detector 1 can be installed outside the chiller system's equipment 2, which is to monitor resistance and detect liquid flow. The test probe 40 and liquid pipeline 30 are connected to the chiller system's equipment 2 and the equipment pipeline 3 of the process chamber 4. The power cord 15 is externally connected to the inside of the equipment 2.

[0068] In summary, the liquid resistance detector provided by this invention detects the specific resistance of the liquid under test using a test probe, sends the detection signal to the main control module to calculate the detection value, and provides real-time alerts on the display screen. This allows for continuous monitoring of the liquid resistance and reduces false alarms. This invention is applicable to liquid monitoring in various industries, including semiconductors and precision machinery, and can monitor all liquids with impedance.

[0069] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A liquid resistance detector, characterized in that, include: A shell; A host computer, which is installed inside the housing, includes a main control module; A liquid pipeline, which is disposed outside the housing, is used to transport a liquid to be tested; A test probe, one end of which is electrically connected to the main control module, and the other end which extends into the liquid pipeline to detect the resistivity of the liquid under test, and generates and sends a detection signal to the main control module; and A display screen is disposed on the outside of the housing and electrically connected to the main control module; The main control module receives the detection signal, calculates a detection value based on the detection signal, and determines whether the specific resistance is lower or higher than a preset value based on the detection value. If so, it issues an alarm signal on the display screen.

2. The liquid resistance detector as described in claim 1, characterized in that, The main unit also includes a power input module, a relay control module, a current output module, a temperature measurement module, and an automatic temperature compensation module. The power input module is connected to an external power source, and the main control module is electrically connected to the power input module, the relay control module, the current output module, the temperature measurement module, and the automatic temperature compensation module, respectively.

3. The liquid resistance detector as described in claim 2, characterized in that, The housing also contains an electrical panel, which is connected between the external power source and the power input module. The front of the housing also has a power switch, which is electrically connected to the power input module.

4. The liquid resistance detector as described in claim 2, characterized in that, The housing has a plurality of connection ports on one side, each of which is connected to at least one signal output line, one power line and the test probe. The signal output line is electrically connected to the main control module and the power line is electrically connected to the power input module.

5. The liquid resistance detector as described in claim 2, characterized in that, The main control module controls the relay control module to switch to the off state or the first / second mode, and displays the relevant information on the display screen.

6. The liquid resistance detector as described in claim 5, characterized in that, When the relay control module switches to the off state, the relay control module shuts down the relay.

7. The liquid resistance detector as described in claim 5, characterized in that, When the relay control module switches to the first / second mode, the first / second mode includes mode one and mode two. In mode one, the relay control module activates the relay when the detected value is lower than the set value, and the main control module controls the display screen to issue a low-point warning. When the detected value is higher than the sum of the set value and a hysteresis value, the relay is deactivated. In mode two, the relay control module activates the relay when the detected value is higher than the set value, and the main control module controls the display screen to issue a high-point warning. When the detected value is lower than the difference between the set value and a hysteresis value, the relay is deactivated.

8. The liquid resistance detector as described in claim 2, characterized in that, The main control module detects the current temperature of the test probe through the temperature measurement module and compares the detected value with the resistivity value at the current temperature.

9. The liquid resistance detector as described in claim 8, characterized in that, The main control module uses the automatic temperature compensation module to perform temperature compensation on the resistivity value at the current temperature in order to obtain the resistivity value at the reference temperature.

10. The liquid resistance detector as described in claim 1, characterized in that, The test probe and the liquid pipeline are connected as one unit by welding.

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