Guide to Buy Coaxial Cable Continuity Tester in NOYAFA

Guide to Buy Coaxial Cable Continuity Tester in NOYAFA

2021-10-09
NOYAFA
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coaxial cable continuity tester from SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED has been manufactured and sold to the world with our impeccable attention to its technical design, quality of workmanship. The product is not only reputed for its excellent performance but also known for its great after-sales service reliability. What's more, the product is also designed with illuminating inspiration and strong ingenuity.There is no doubt that our NOYAFA products have helped us to consolidate our position in the market. After we launch products, we will always improve and update the performance of the product based on the users' feedback. Thus, the products are of high quality, and customers' needs are satisfied. They have attracted more and more customers from both home and abroad. It results in growing sales volume and brings higher re-purchase rate.With Best Cable Tester Supplier in China _ Noyafa, we guarantee the response time of product support for coaxial cable continuity tester to ensure customers always get a fast response to the problems. We are not perfect, but perfection is our goal.
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Correct Use of Live Cable Identifier
Correct Use of Live Cable Identifier
The cable identifier has the main function of identifying a cable from a bundle of cables. The utility model is composed of a receiver and a connector of a signal generator and a sensor. It is commonly used in cable erection, migration, maintenance and fault handling. It is divided into live cable identifier and non live cable identifier. Let's talk about their own search methods. 1. Search method of live cable recognizer: when the line is live, we can't affect the normal operation. When identifying the cable with points, we use the induction method to measure. The high-frequency signal is transmitted through the caliper. After receiving the signal characteristics, the receiver filters through software and hardware. During phase identification, when the receiving caliper clamps the cable according to the current direction, the identified cable ammeter deviates to the right, Accompanied by audible and visual indication. The current direction of other cables is opposite to that of the identified cable, and the ammeter pointer deviates to the left. No audible and visual indication. This reflects the uniqueness of the identified target cable. It is easy to distinguish the identified cable from multiple cables. Since the signal current strength on the identified cable is the same throughout the line, the electromagnetic signal strength received by the receiving caliper along the cable is the same. In principle, the identified cable is not limited by the length of the identified cable. 2. Search method of dead cable identifier: the search method of dead cable identifier is basically connected with live identification. The generator feeds periodic unipolar voltage pulses into the cable to be identified. The cable needs to be grounded at the far end to ensure that enough current flows through the cable. The direction of pulse current fed into the cable can be used as an obvious identification standard, The outgoing current only passes through this cable. All other adjacent cables flow through the return current, but their polarity is opposite. The direction and size of the current flowing through the cable are detected through the receiver. It is equipped with an amplifier and connected in series in the circuit. The sensor clamps the measured cable. The magnetic field generated by the current flowing through the cable induces a voltage in the coil of the sensor, The voltage polarity is determined by the current direction and the direction of the sensor coil, so as to identify the cable. Since the cable shielding layer is usually connected to the ground, if other cables in the cable bundle are also connected to the public ground, the black output jack on the generator can be connected to the public ground. The return current is distributed in several cable shielding layers and divided into many tributaries, which means that the difference current of the identified cable is large and the useful signal is clear, The difference means that the output current and its divided return current are in the same channel.
LC Duplex Fiber Connector for High-density Cabling
LC Duplex Fiber Connector for High-density Cabling
Due to its small size, LC connector is the mainstream fiber optic connectors and is widely used in optical communication networks, data networks, and cable television networks. In daily application environment, LC duplex connector used more often because of its cabling space saving. LC duplex fiber optic connector is two simplex LC connectors encased in a common housing. Compared with LC simplex connector, the installation steps are reduced, saving time and money.HYCs LC duplex connector is superior to traditional LC duplex connector, providing an innovative solution for quick unlocking. Compared to the traditional two single connectors, this duplex connector only needs one press to achieve double releasing. As shown in Figure 2,3, the design of this two-core connector has two advantages, one is the longer clip and another is a lower clip. The extended longer latch on top of the connector body makes it easier to disengage from the adapter, even in high-density packaging. If you have the experience of releasing LC duplex connectors in patch panels in high-density cabling, you may know why this is important. Because in the cabling case, thumbs and forefingers are not ideally suited to operate the release lever and pulling the connector. The handle portion of a conventional duplex connector will be slightly higher than the adapter, which will take up more space during the cabling installation. The lower clip design of this LC duplex connector can save more space. In the high-density environment of the data center, the space saved by multiple connectors is combined to have a great advantage.Another important advantage is the ability to reverse polarity. In the optical signal transmission, the optical signal is divided into a receiving end and a transmitting end. The optical fiber link transmitting signal (Tx) at one end of the optical cable must be matched with the corresponding receiver (Rx) at the other end, and the matching is called polarity.Conventional LC fiber jumpers have significant limitations in achieving polarity switching. It is necessary to pay special attention to the direction of polarity transformation to avoid the failure of termination and face the possibility of replacing the jumpers and re-cabling. The ability to switch the polarity of this LC duplex connector makes this operation easier, saving a lot of time and wiring costs by easily switching polarity without any tools.With the rapid application of 5G, how to provide a high-density, low-cost, easy-to-manage, and highly reliable network cabling system for data centers has become an increasingly important requirement. The LC duplex fiber optic connector is a high-reliability, low-cost, high-density cabling solution. Originally published at wordpress. com on April 27, 2019. RELATED QUESTION What is the pipe schedule, pipe class, and which kind of pipes are used? Pipe schedule always signifies the wall thickness of pipe /pipe fittings ,In simple words how thick the pipe is given by schedule , According to Asme standard For butt weld fittings B16.9 std gives you schedulePipe class refers to the material specifications of pipe ,it gives you the grade of pipeFor eg A403 Grwp gives austenite stainless steel pipe classA234 Grwp is for wrought carbon steel pipeDifferent types of pipes1.MetalsA.weldedB .Seamless2.Non metals3.HdpeWhat is the pipe schedule, pipe class, and which kind of pipes are used?.
System Composition of Intelligent Cable Fault Tester
System Composition of Intelligent Cable Fault Tester
Intelligent cable fault tester is an important tool for maintaining various cables. It adopts a variety of fault detection methods, applies contemporary advanced electronic technology achievements and devices, adopts computer technology and special electronic technology, and combines the long-term successful experience in developing cable tester. It is a high-tech, intelligent and fully functional product. The intelligent cable fault tester is composed of three parts, which is used for the test of various faults of power cables, the search of cable path and cable burial depth, the daily maintenance and management of cable archives, as well as the fault test of railway and airport signal control cables and street lamp cables. Cable fault finding is generally divided into four steps: fault nature diagnosis, fault location, path detection and fault location. The methods of fault location mainly include: first, the bridge method, mainly including the traditional DC bridge method, voltage drop comparison method and DC resistance method; The second is the low-voltage pulse method, also known as the radar method, which is to input the low-voltage pulse signal into the cable through the instrument at one end of the cable. When the fault point with mismatched wave impedance is encountered, the pulse signal will be reflected and returned to the measuring instrument. This method has the advantages of simple operation and high test accuracy. It is mainly used to test line breaking and low resistance faults, but it can not test high resistance faults and flashover faults; The third is the pulse voltage method, which needs to apply DC high voltage signal to the faulty cable; Fourth, pulse current method, which needs to apply DC high voltage signal to the faulty cable; The fifth is the secondary pulse method. System composition of intelligent cable fault tester: 1. Host of cable fault tester 2. Cable path and fault locator 3. Cable fault integrated high voltage generator 4. Cable identifier 5. High voltage cable safety pricker 6. High voltage equipment: current sampler, cable fault integrated high voltage generator, pulse capacitor, complete set of special test line, etc.
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
Any meter that can check voltage, current and resistance is called a multimeter. To prove that the electrical testing is new to us, we often ask our residents if they can teach an apprentice how to properly use a voltmeter or multimeter. Once you understand how to use a multimeter correctly, you can proceed to troubleshooting and troubleshooting electrical problems, checking sockets, checking continuity and more.Proximity to the voltage detector is a good first test, followed by direct contact with the meter. The voltage is relative to the two points at which it is measured by the meter, so a voltmeter must be connected to two points in the circuit to get a good measurement.As part of the test, the 70E requires a conductor circuit with phase phase phase and phase to ground. Note that this requirement does not apply to medium to high voltage systems, so proximity voltage detectors are the preferred test method.Non-contact voltage testers are the safest way to ensure that the current touches the wire. They light up and make no noise, but they can get very close to hot electric wires, especially those covered with plastic insulation.Select a low or high voltage level to verify the presence of a voltage contact with an energy-rich conductor. If you hear continuous chirping or see a series of flashes, confirm that the tester has detected voltage.Test your battery at every stage and measure your readings to optimum voltage. These tips lead to the use of a test circuit that you can see when working with your RV batteries.Some manufacturers of voltage sniffers recommend holding the tester with bare hands and keeping it close to the body. To use a two-pronged voltage tester, place a cable in a metal box containing the ground wire and a solid copper wire, and the other cable you are testing, but never use a two-pronged multimeter. The measurement of the signal allows calculations without the stress of a CT socket tester or circuit analyzer (practical socket voltage testers are ideal for checking voltages and showing if a socket wire is missing a wire, such as the grounding wire).Like any technology or device, your digital multimeter has a lifetime. A visual inspection can be carried out to check and ensure that your multimeter is working properly. Inspection of light must be carried out with electrical energy Floor inspection facilitates the repair of motor vehicles Inspection of a lamp is simple and inexpensive, especially for 12 volt vehicles.These multimeters have the same properties as a voltmeter and check current, resistance and continuity. At the top of the charts in the best-selling multimeter category, Kaiweets Digital Multimeter will do the work for you. It features accurate measurements of AC and DC voltage, AC / DC current and resistance, continuity, frequency, capacitance, diodes, liquid temperature, battery control and shutdown measures.If you do not have a multimeter, you can use a voltage detector instead of a voltmeter or a continuity test instead of an ohmmeter. User-friendliness has little to do with the multimeter that holds your readings for you, as you cannot see what you are working with on the screen. Use it instead to tell you if the white or black cable is in the inverted socket, or if the underground cable is inserted into the box or plugged into the socket.As soon as you receive a reading from your meter, check if it has a switch called DC. Be sure to follow the instructions to get the maximum amount of current that the meter can handle. To see how this works, let's look at a few examples to show how the meter is used.Use a low-voltage proximity tester to measure the circuit to be tested when the low-impedance voltage tester is connected. Figure 2 illustrates the final reading of the voltage displayed by the proximity testers and the voltage displayed by the tester. The tester measures the voltage (Figure 3) and if it is several volts above or below, it indicates the presence of a voltage, and if there is a voltage in the circuit, a power supply must be found before moving on.If the circuit voltage is lower than normal and the current is high, a harmful spark can occur the moment the last meter probe connection is established. In the multimeter version, the zero ohm resistance is tested with the probe tip (red) and the probe is plugged into the red current measuring socket. When the voltage is measured in this mode (red LED plugged into red V socket) and many mega ohm resistors are tested from the probe tip, the voltmeter is designed to be close to infinite resistance, so that it does not draw any significant current from the circuit's tested circuit.We used the voltage sniffer on a metallic light in a kitchen or sink to check if it was grounded. When the luminaire is not grounded, a hot wire comes into contact with it and the wire will supply the metal with energy, making an electric shock a hazard. The voltage sniffer found no power cables grounded in the metal wire.When using a voltage detector the following checks should be carried out: Check for optical damage, third party labels and indicate the date of the next routine inspection. Check whether the maximum permitted voltage range is can be used depending on the voltage rate of the power supply system (in mV / hV) (Note: 2 test ranges are possible with KP-Test 5 Dual Voltage Detektors as indicated by the number of green LEDs ). The voltage ranges available, the ATEX approval, the choice of tip and antenna shape vary according to the application of the volt stick, but the right product ensures safe work on site.I call it a voltage sniffer but the technical name for it is a capacitive voltage sensor. Inspectors use voltage sniffers for a few different things, so it's important to have one or two spare parts ready. Voltage sniffers use black magic to determine whether wires are alive or not, and they are 100% reliable at all times.
How to Select Cable Fault Test Equipment
How to Select Cable Fault Test Equipment
Recently, many friends have consulted about the selection of cable fault detection equipment. Whether the matching of cable fault detection equipment is correct will directly affect the use effect of the equipment. It is only necessary to select the corresponding supporting equipment according to the cable condition of the unit to ensure the reliability and convenience of the test work. Now let the cable recognizer manufacturer introduce how to select the type. Generally, cable testing equipment can be selected according to the following principles: first, selecting perfect service is the primary factor; In recent years, due to the increasing popularity of cable test equipment faults among domestic users, domestic manufacturers and dealers are also increasing. Choosing reliable manufacturers and whether they can provide high-quality services should be the only correct choice for users to choose cable test equipment at present. 2、 Products with advanced performance are the best choice; Since it came out in the 1970s, the cable fault tester has undergone years of continuous improvement, especially the application of computer technology and high-speed sampling technology in the 1990s, which has revolutionized the performance of the instrument. By transforming analog test technology into digital test, the test waveform can be permanently saved or printed. Wave storage problem: due to the rapid development of microcomputer technology in recent years. Due to the adoption of new electronic components and new technologies, cable fault detection technology has developed greatly. The previous single waveform detection has been gradually replaced by a series of waveform processing technologies such as multi waveform display, waveform superposition and waveform comparison. Modern new cable fault tester generally has waveform storage function. Due to different models, the number of stored waveforms is also different. Generally, there should be at least two groups of waveform storage in use for comparison when analyzing waveforms. The advanced test instruments currently designed have on-site protection function. No matter when you start, you can reproduce the last test waveform. In this way, it plays an important role in summarizing and summarizing data in the office after the on-site test. In the design of old-fashioned instruments, the memory will be cleared after startup for test preparation. The test waveform will be lost and no data will be retained in the instrument. Automatic identification of waveform: the cable fault tester mainly collects and displays the waveform of cable fault discharge in the test process, and generally needs to analyze and judge the collected waveform manually. Therefore, the analysis level of the operator is required to be high, and the inexperienced operator is often unable to correctly judge the fault waveform, resulting in the query cable fault can not be handled correctly. And the existing new cable instrument has the function of automatic identification.
Functions of Professional Cable Identifier
Functions of Professional Cable Identifier
In order to quickly and accurately identify a specific cable from a bundle of cables, special instruments are needed, such as professional cable identification instrument. It is a compact instrument with relatively simple operation. So, what other functions should the cable identifier have? This is what Xiaobian wants to discuss with you today. Cable identification instrument is a special instrument used to identify a specific cable from a bundle of cables. It is a compact instrument, which is installed in an aluminum alloy box and consists of a signal generator, a receiver with sensor and wiring. In order to identify the cable reliably and accurately, it is necessary to add a special signal to the identified cable, which should be received by a special receiver. Using this characteristic, the cable to be found can be identified. The generator feeds periodic unipolar voltage pulses into the cable to be identified, which needs to be grounded at the far end to ensure that a large enough current flows through the cable. The system shall be designed so that the return current does not return from the same cable. This can be achieved. The direction of the pulse current fed into the cable can be used as an obvious identification standard. The outgoing current only passes through this cable, and all other adjacent cables flow through the return current, but their polarity is opposite. In addition to the actual difference in current direction, the current amplitude is also an identification feature. The outgoing current only passes through one cable, while the return current can pass through several cables, which means that the outgoing current is greater than the return current flowing through other cables. The task of the receiver is to detect the direction and magnitude of the current flowing through the cable. In order to achieve this purpose, the current sensor is used as a sensor, which is equipped with an amplifier and connected in series in the circuit. The sensor clamps the measured cable. The magnetic field generated by the current flowing through the cable induces a voltage in the coil of the sensor. The polarity of the voltage is determined by the current direction and the direction of the sensor coil. In order to obtain the voltage polarity with obvious current direction, all cables in a bundle shall be tested in the same correct direction. The voltage induced in the sensor coil is displayed in the meter. If the sensor is connected in the above way, the pointer swing direction can display the current direction, that is, only the cable with current flowing out deviates to one side, and this is the cable to be found. All other cables only flow return current, the pointer deviates to the other side, or there is no pulsating current, and the pointer does not deflect. The amplifier regulator on the receiver can adjust the signal strength. What we need for professional cable identification instrument is, on the one hand, of course, to have good accuracy. If the accuracy is not enough, we will use it in vain. If it is not accurate, it will affect the later stage. In addition to accuracy, it is necessary to ensure the service life. When an ordinary voltage current ratio meter type grounding resistance meter (commonly known as grounding megger) is used to measure the grounding resistance, the grounding device passing through the tower shall separate the grounding down lead from the tower for measurement; Through the grounding device of non prestressed reinforced concrete pole, the measurement shall be carried out after the grounding down lead is separated from the lightning conductor from the top of the pole. In the initial state of the system, press the setting key of the DC resistance tester to enter the setting function state, set the material option to unknown, set the measurement mode to resistance, set the working mode to standard, set the measurement speed to standard, and press the return key to return to the initial state of the system.
Theory of Cable Fault Locator
Theory of Cable Fault Locator
The basic function of cable fault locator is in the power industry and some industries using cables, especially in some complex power systems. It is very difficult to find the fault of underground cable lines. However, in this regard, the continuous emergence of equipment with various functions and simple operation can not only reduce the high cost of fault detection, but also reduce the inevitable long-time power failure when difficult to find (cable fault locator) cable fault, which brings a lot of convenience to troubleshooting. Direct buried cable fault detection in underground direct buried cable and underground residential power distribution (URD) system is a very time-consuming thing, and will cause very inconvenient power failure to users. Some technologies may also damage the cable. For some equipment with high technical requirements, its operation is more complex, and only operators with strict training can use it, which brings a lot of inconvenience to the popularization and application of this kind of technical equipment. Therefore, the selection of appropriate technology depends partly on the knowledge of cable system design understood by the designer of fault detector, and also partly on the professional and technical knowledge of equipment and operators in this regard. With appropriate equipment and professional technology working on site, it is the first step to detect faults quickly and effectively. Hammering (pulse) method many power companies use hammering (pulse) method. This technique is effective in detecting high resistance faults in a simple (cable fault locator) cable system. The hammering method includes using a pulse or impulse voltage to impact the power cut cable. When an effective high voltage pulse strikes the fault area, the fault point flashover and produces a hammering sound that can be heard by the operator along the cable surface. However, detecting cable faults often requires several hammers, and repeated shocks may damage the cable. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
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