Simple calibrator for conductivity meter

Abstract

The utility model discloses a conductivity meter simple calibrator which comprises a cavity, one end of the cavity is provided with a second fixing plate, the other end of the cavity is provided with a first fixing plate, the first fixing plate and the second fixing plate are mutually fixed with the cavity through a connecting assembly, and the first fixing plate and the second fixing plate are provided with a calibration assembly. Due to the fact that errors of a standard resistance calibration mode are relatively large and workload of field operators is increased, in order to eliminate the influences, the calibrator is designed and developed by means of years of field debugging experience, connection is achieved in an aviation plug mode, the problem that contact is not firm can be solved, the influences of the errors are eliminated, and the calibration accuracy is improved. The calibration device can solve the problem that the standard resistors are not easy to store due to the fact that the standard resistors are small and exquisite, can solve the influence of line resistance difference on calibration, and finally can solve the problem that the standard resistors are not easy to store, and is composed of standard resistors (1 kilohm standard resistors 11 and 10 kilohm standard resistors 11), aviation plugs (2) and a cavity 1.

Description

Technical Field

[0001] This utility model relates to the field of calibrator technology, specifically a simple calibrator for a conductivity meter. Background Technology

[0002] An industrial conductivity meter basically consists of three parts: a secondary meter head, an electrode cable, and an electrode. One end of the electrode cable is connected to the secondary meter head via a terminal block, and the other end is connected to the electrode via an aviation connector. In-factory testing and debugging are performed using a resistance box for calibration. However, since the instrument was designed for on-site calibration-free operation, and considering that most on-site conditions lack the necessary equipment and the inconvenience of operating a resistance box, and also to have a contingency plan in case calibration is required, standard resistors were initially used for on-site calibration. However, based on years of on-site practice and service experience, while these standard resistors are small and convenient, they are not portable, are more prone to loss, and while seemingly practical, they also have a certain degree of error, which is detrimental to the customer's requirement for accurate sample verification.

[0003] There are two common calibration methods on site. The first method involves disconnecting the electrode cable from the terminals of the secondary meter, connecting a standard resistor (1KΩ or 10KΩ) to the terminals according to the instrument's prompts, and then inserting the terminals into the corresponding sockets (DIN1 and DIN2) for calibration. Figure 4 This first method, because it doesn't include the electrode cable in the calibration process (i.e., it doesn't consider the influence of line resistance on the calibration), has a certain impact on the accuracy of the instrument. This error varies with the length of the electrode cable; the longer the electrode cable, the larger the error. The second method involves disconnecting the electrode cable from the electrode aviation connector and, according to the instrument's instructions, inserting a standard resistor (1KΩ or 10KΩ) into the corresponding jacks (pins 1 and 2) of the aviation connector on the electrode cable side for calibration. Figure 4 This method of directly inserting a standard resistor into the aviation connector, while taking into account the resistance of the electrode cables, is prone to calibration failure or errors due to unreliable contact between the standard resistor and the aviation connector socket. This not only affects measurement accuracy but also increases the workload of operators. Therefore, those skilled in the art have provided a simple conductivity meter calibrator to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a simple calibrator for conductivity meters to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A simple calibrator for a conductivity meter includes a cavity, a second fixing plate at one end of the cavity, a first fixing plate at the other end of the cavity, the first fixing plate and the second fixing plate being fixed to the cavity by a connecting component, and a calibration component being provided on the first fixing plate and the second fixing plate.

[0007] Furthermore, the calibration component includes a second pin, a second pin, a first pin, a first pin, a second pin, a 1KΩ standard resistor, a 10KΩ standard resistor, a conductive rod, and connecting solder joints. The second pin and the second pin are fixedly connected to the second fixing plate. The second pin is located above the second pin, and there are three other pins in addition to the second pin and the second pin.

[0008] Furthermore, the second pin 1 and the second pin 2 are fixedly connected to a connection solder joint, and a conductive rod is fixedly connected to one end of the connection solder joint. A 10KΩ standard resistor is fixedly connected to one end of the conductive rod, and the other end of the 10KΩ standard resistor is connected back to the second pin 2 through the conductive rod and the connection solder joint.

[0009] Furthermore, a 1KΩ standard resistor is fixedly connected to the first pin via a conductive rod and a connecting solder joint, and the other end of the 1KΩ standard resistor is connected back to the first pin via a conductive rod and a connecting solder joint.

[0010] Furthermore, the connecting assembly includes a first external connecting ring, a second external connecting ring, an internal connecting ring, a connecting thread, an internal combined thread, and an external combined thread. One end of the second fixing plate is fixedly connected to the second external connecting ring, and the surface of the second external connecting ring is provided with a connecting thread.

[0011] Furthermore, an internal connecting ring is fixedly connected to the end of the second fixing plate away from the second external connecting ring. The surface of the internal connecting ring is provided with an external combined thread, and the inner side wall of the cavity is provided with an internal combined thread that cooperates with the external combined thread.

[0012] Furthermore, a first external connecting ring is fixedly connected to one end of the first fixing plate, and another connecting thread is provided on the surface of the first external connecting ring. Another internal connecting ring is fixedly connected to the end of the first fixing plate away from the first external connecting ring. The internal connecting ring is used in conjunction with the cavity through a separately provided internal combined thread and external combined thread.

[0013] By adopting the above technical solution

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The calibrator uses an aviation connector for connection, which solves the problem of unreliable contact and eliminates the influence of errors.

[0016] 2. The calibrator uses an aviation connector for the electrode cable, which solves the problem of line resistance affecting calibration.

[0017] 3. The calibrator is of moderate size (cylindrical, 80mm long, 15mm wide, and 15mm high), easy to carry, and can also solve the problem of standard resistors being too small and difficult to store. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a simple calibrator for a conductivity meter;

[0019] Figure 2 This is a frontal cross-sectional schematic diagram of a simple calibrator for a conductivity meter.

[0020] Figure 3 In this utility model Figure 2 A magnified view of the structure at point A;

[0021] Figure 4 Two physical connection methods need to be improved;

[0022] In the diagram: 1. Cavity; 2. First fixing plate; 3. First external connecting ring; 4. Second fixing plate; 5. Second external connecting ring; 6. Second pin 1; 7. Second pin 2; 8. First pin 1; 9. First pin 2; 10. 1KΩ standard resistor; 11. 10KΩ standard resistor; 12. Conductive rod; 13. Internal connecting ring; 14. Connecting thread; 15. Connecting solder joint; 16. Internal combined thread; 17. External combined thread. Detailed Implementation

[0023] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Please see Figures 1-3 This utility model provides an embodiment of a simple calibrator for a conductivity meter, including a cavity 1. A second fixing plate 4 is provided at one end of the cavity 1, and a first fixing plate 2 is provided at the other end of the cavity 1. The first fixing plate 2 and the second fixing plate 4 are fixed to the cavity 1 by a connecting component. Calibration components are provided on the first fixing plate 2 and the second fixing plate 4.

[0025] In this embodiment, the calibration component includes a second pin 6, a second pin 7, a first pin 8, a first pin 9, a 1KΩ standard resistor 10, a 10KΩ standard resistor 11, a conductive rod 12, and a connecting solder joint 15. The second pin 6 and the second pin 7 are fixedly connected to the second fixing plate 4. The second pin 6 is located above the second pin 7. In addition to the second pin 6 and the second pin 7, there are three other pins. The second pin 6 and the second pin 7 are fixedly connected to the connecting solder joint 15, and one end of the connecting solder joint 15 is fixedly connected to… There is a conductive rod 12, one end of which is fixedly connected to a 10KΩ standard resistor 11. The other end of the 10KΩ standard resistor 11 is connected back to the second pin 7 through the conductive rod 12 and the connecting solder joint 15. The first pin 8 is fixedly connected to a 1KΩ standard resistor 10 through the conductive rod 12 and the connecting solder joint 15. The other end of the 1KΩ standard resistor 10 is connected back to the first pin 9 through the conductive rod 12 and the connecting solder joint 15. The 1KΩ standard resistor 10 and the 10KΩ standard resistor 11 can be fixed on the first fixing plate 2 and the second fixing plate 4 respectively through the conductive rod 12 and the connecting solder joint 15.

[0026] In this embodiment, the connecting assembly includes a first external connecting ring 3, a second external connecting ring 5, an internal connecting ring 13, a connecting thread 14, an internal combined thread 16, and an external combined thread 17. One end of the second fixing plate 4 is fixedly connected to the second external connecting ring 5, and the surface of the second external connecting ring 5 is provided with the connecting thread 14. The end of the second fixing plate 4 away from the second external connecting ring 5 is fixedly connected to the internal connecting ring 13, and the surface of the internal connecting ring 13 is provided with the external combined thread 17. The inner sidewall of the cavity 1 is provided with an internal combined thread 16 that mates with the external combined thread 17. One end of the first fixing plate 2 is fixedly connected to a first external connecting ring 3. The surface of the first external connecting ring 3 is provided with another connecting thread 14. The end of the first fixing plate 2 away from the first external connecting ring 3 is fixedly connected to another internal connecting ring 13. The internal connecting ring 13 is used in conjunction with the cavity 1 through a separately provided internal combined thread 16 and external combined thread 17. The first fixing plate 2, the second external connecting ring 5 and the internal connecting ring 13 are fixed to form an aviation plug and are connected to the cavity 1. Furthermore, the internal combined thread 16 and the external combined thread 17 are used to ensure that the two are firmly fixed.

[0027] Since the error of the standard resistance calibration method is relatively large, it also increases the workload of on-site operators. To eliminate these influences, based on years of on-site debugging experience, this calibrator was designed and developed. It is connected by means of aviation plugs, which can not only solve the problem of unreliable contact and eliminate the influence of errors, but also solve the influence of wire resistance differences on calibration. Finally, it can also solve the problem that the standard resistance is too small and not easy to store. This calibrator consists of three parts: standard resistors (one 1KΩ and one 10KΩ standard resistor 11 each), aviation plugs (2), and cavity 1. The specific details are as follows: There are two aviation plugs. One aviation plug (with a total of 5 pins, using pins 1 and 2) is welded to the 1KΩ standard resistor 10, and the other aviation plug (with a total of 5 pins, using pins 1 and 2) is welded to the 10KΩ standard resistor 11. After welding, use a qualified inspection instrument (usually a multimeter) to measure whether its actual value is the same as the theoretical resistance value. After passing the inspection, screw the two aviation plugs welded with standard resistors into both sides of cavity 1 respectively (the two ends of cavity 1 are processed with thread fasteners, and the thread fasteners match the thread fasteners of the aviation plugs). At this time, the assembly of the calibrator is completed. For the assembled calibrator, use a qualified multimeter resistance range to determine the resistance value (confirm which end is 1KΩ and which end is 10KΩ), and mark the corresponding resistance value (1KΩ or 10KΩ) at both ends of the calibrator. Finally, use a qualified instrument to reverse-check whether the calibrator is qualified. After everything is correct, this calibrator can be used as a standard calibrator for factory production. The completed calibrator is in a cylindrical shape, 80mm long, 15mm wide, and 15mm high. It is easy to store, easy to carry, convenient for calibration, and has reliable connection. When calibrating the instrument, just disconnect the electrode cable from the electrode aviation plug (disconnect the electrode from the electrode cable), and according to the instrument prompt, connect to the aviation plug side corresponding to the resistance value of the calibrator (connect to the 1KΩ side or the 10KΩ side). After calibration, just unplug the aviation plug connecting the calibrator and the electrode cable.

[0028] Since the calibrator is connected by means of aviation plugs, it can solve the problem of unreliable contact and eliminate the influence of errors. Since the calibrator is connected to the electrode cable aviation plug, it solves the influence of wire resistance on calibration. Since the calibrator has a moderate size (cylindrical, 80mm long, 15mm wide, and 15mm high), it is easy to carry, and it can also solve the problem that the standard resistance is too small and not easy to store.

[0029] This specification is described according to the implementation manners, but not every implementation manner only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. A simple calibrator for a conductivity meter, comprising a cavity (1), characterized in that, The cavity (1) is provided with a second fixing plate (4) at one end and a first fixing plate (2) at the other end. The first fixing plate (2) and the second fixing plate (4) are fixed to the cavity (1) by a connecting component. Calibration components are provided on the first fixing plate (2) and the second fixing plate (4).

2. The simplified calibrator for a conductivity meter according to claim 1, characterized in that, The calibration component includes a second pin (6), a second pin (7), a first pin (8), a first pin (9), a 1KΩ standard resistor (10), a 10KΩ standard resistor (11), a conductive rod (12), and a connecting solder joint (15). The second pin (6) and the second pin (7) are fixedly connected to the second fixing plate (4). The second pin (6) is located above the second pin (7), and there are three other pins in addition to the second pin (6) and the second pin (7).

3. A simplified calibrator for a conductivity meter according to claim 2, characterized in that, A connecting solder joint (15) is fixedly connected to the second pin 1 (6) and the second pin 2 (7). A conductive rod (12) is fixedly connected to one end of the connecting solder joint (15). A 10KΩ standard resistor (11) is fixedly connected to one end of the conductive rod (12). The other end of the 10KΩ standard resistor (11) is connected back to the second pin 2 (7) through the conductive rod (12) and the connecting solder joint (15).

4. A simplified calibrator for a conductivity meter according to claim 3, characterized in that, The first pin (8) is fixedly connected to a 1KΩ standard resistor (10) via a conductive rod (12) and a connecting solder joint (15). The other end of the 1KΩ standard resistor (10) is connected back to the first pin (9) via a conductive rod (12) and a connecting solder joint (15).

5. A simplified calibrator for a conductivity meter according to claim 4, characterized in that, The connecting assembly includes a first external connecting ring (3), a second external connecting ring (5), an internal connecting ring (13), a connecting thread (14), an internal combined thread (16), and an external combined thread (17). One end of the second fixing plate (4) is fixedly connected to the second external connecting ring (5), and the surface of the second external connecting ring (5) is provided with a connecting thread (14).

6. A simplified calibrator for a conductivity meter according to claim 5, characterized in that, The second fixing plate (4) is fixedly connected to an internal connecting ring (13) at one end away from the second external connecting ring (5). The surface of the internal connecting ring (13) is provided with an external combined thread (17), and the inner side wall of the cavity (1) is provided with an internal combined thread (16) that works with the external combined thread (17).

7. A simplified calibrator for a conductivity meter according to claim 6, characterized in that, One end of the first fixing plate (2) is fixedly connected to a first external connecting ring (3), and another connecting thread (14) is provided on the surface of the first external connecting ring (3). The end of the first fixing plate (2) away from the first external connecting ring (3) is fixedly connected to another internal connecting ring (13). The internal connecting ring (13) is used in conjunction with the cavity (1) through a separately provided internal combined thread (16) and external combined thread (17).

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