The Introduction of Underground Cable Fault Detector
March 09 , 2021
The underground pipeline detector can quickly and accurately detect the location, direction, depth, and the location and size of the damage point of the steel pipeline anticorrosive layer without damaging the ground cover. It is one of the necessary instruments for water supply companies, gas companies, railway communications, industrial and mining, infrastructure units to transform, repair, and survey underground pipelines. 1. Generally consists of two parts: 1）. Transmitter: A signal current of a special frequency is applied to the pipeline under test, generally using three excitation modes: direct connection method, induction method and clamp method 2）. Receiver: The receiver has a built-in induction coil to receive the magnetic field signal of the pipeline, and the coil generates an induced current to calculate the direction and path of the pipeline. Generally, there are three receiving modes: peak mode (maximum value), valley mode (minimum value), and broad peak mode; in addition, more advanced instruments generally have a peak arrow mode (combining the advantages of both peak and valley values, so that Operation is more intuitive) and compass guide (used to indicate the direction of the pipeline). There are also some accessories to cooperate with the use of the two major components. 2. Application Underground pipeline detectors are basically divided into two categories, pipeline detectors that use the principle of electromagnetic induction, and pipeline radars that use electromagnetic waves. Which underground pipeline detector to choose depends on the actual situation and consider the actual factors before making a decision. At this time you need to understand your own needs, such as the scope of application of the pipeline instrument, test methods and functions. Generally, you can choose a pipeline instrument with simple operation, intuitive interface, and detection ability that meets your application requirements. In addition, it is also necessary to consider whether the accessory configuration is complete, whether the instrument can be upgraded, whether it is compatible, and so on. 3. How to choose 1. According to your own needs: Many pipeline meters are only suitable for part of the detection requirements. When choosing, you must understand the scope of application of pipeline meters. 2. Understand the test method of the pipeline instrument, whether the operation is easier and the interface is more intuitive 3. Understand the function of the pipeline instrument and whether the sounding ability meets your needs 4. Is the configuration of accessories complete, such as clamps (usually used for cable detection in dense areas), rechargeable batteries (saving detection costs), etc. 5. The sustainable development of the instrument, the ever-changing technology, whether it can be upgraded, is also a test standard for the instrument 6. The compatibility of the instrument, whether it can receive and transmit frequency is wide, which is conducive to detection and expand the use.
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