NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
The power system should be stable to run, and the power cable is really noticed. Cables are the main bearer tools in the power system, and the cable may receive various factors during use, resulting in failure, which requires timely inspection power system to stabilize, and the power cable is really important. of. Cables are the main bearer tools in the power system, and the cable may receive various factors during use, resulting in failure, which requires timely overhaul.
The cable is buried underground, so special detection tools are required to quickly find the fault point, so that the staff can fix it in time. The pipeline detector is a commonly used cable fault detection device. We today mainly introduce questions that should be understood before the pipeline detector.
Today, Xiaobian introduces you to the relevant knowledge you need to know before using the pipeline detector. Let's take a look at the introduction of Xiaobian. 1. The graphic display can be continuous, and the various parameters and signal strength during the detection process are displayed in real time. 2. Automatically convert to the dual-horizontal antenna mode and automatically adjust the receiver sensitivity, so that the measurement signal is optimized, and the test is automatically restored to the working mode before the deepening.
3, single-level antenna, double-horizontal antenna, vertical antenna three measurement modes, and verify the accuracy of pipeline measurement. 4, have a variety of depth measurement methods: double coil direct reading, 70% method; single coil 80% method, 50% method and 45 degrees angle. 5, high sensitivity, strong anti-interference, accurate positioning.
6, multimeter function: Test cable in the cable fault lookup cables and insulation. The internal structure of the pipeline detector: 1. Transmitter: Apply a special frequency signal current to the tube line, generally use the straight-action method, induction method, and clamp method, three excitation mode transmitter technical parameters injection mode 480Hz 31kHz induction, Clamp mode 31KHz output voltage 0-400VP-P According to the insulation case automatic / manual adjustment output waveform sine wave power supply 12VDC 4.5AH lithium battery max output power 10W 2. Receiver: Receiver internal sensing coil, receives a magnetic field signal of the pipe, coil Generate an induction current to calculate the direction of the pipeline and the path. 2. Generally there are three reception modes: peak mode (max), valley mode (minimum), wide peak mode; now more advanced instruments generally have peak arrow mode (combined with both peaks and valley values Advantages, make operation more intuitive) and compass guides (used to indicate the direction of pipelines).
3. Receiver technical parameters Receive sensitivity I≤100μA @ 1m to 50Hz interference defending≥100dB power consumption<1.0W power supply, 12V 1.5AH lithium battery, maximum test buried 4.5 meters, test buried error,±0.05H±5cm (H is the buried depth of the cable) test routing error≤5cm test line insulation≤25mΩTest pipeline routing and buried depth effective length is not less than 20km (normally). 4. Test line routing and buried valid length of less than 3km (normally). Note: Normally, the pipeline tested does not have insulation failures and other interferences within the above measurement range.
The above is the relevant content you need to know before using the pipeline detector. Understand the product is for better use of the product.
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