Author: Noyafa–CCTV Tester
Internal structure of pipeline detector 1. Transmitter: apply a signal current of a special frequency to the pipeline under test, generally using three excitation modes: direct connection method, induction method and clamp method The internal structure of the clamp mode 31KHz pipeline detector 1. Transmitter: apply a signal current of a special frequency to the pipeline under test. Generally, three excitation modes of direct connection method, induction method and clamp method are used. Technical parameters of the transmitter Injection mode 480Hz 31KHz Induction, clamp mode 31KHz output voltage 0-400VP-P automatically/manually adjust output waveform sine wave power supply 12VDC 4.5AH lithium battery maximum output power 10W 2. Receiver: The receiver has a built-in induction coil to receive the magnetic field signal of the pipeline. The coil generates an induced current that calculates the direction and path of the pipe. There are generally three receiving modes: peak mode (maximum value), valley value mode (minimum value), and broad peak mode; in addition, more advanced instruments now generally have peak arrow mode (combining the advantages of both peak and valley values, make the operation more intuitive) and compass guidance (used to indicate the direction of the pipeline). Receiver Technical Parameters Receiving Sensitivity I≤100μA@1M to 50HZ interference defense≥100db power consumption<1.0W power supply 12V 1.5AH lithium battery maximum test buried depth 4.5 meters test buried depth error±0.05h±5CM (h is the buried depth of the optical cable) test routing error≤5cm test line insulation degree≤25MΩUse injection method to test pipeline routing and effective length of buried depth not less than 20Km (under normal circumstances).
Use the induction method to test the line routing and the effective length of the buried depth is not less than 3Km (under normal circumstances). Note: Under normal circumstances, it means that the tested pipeline has no insulation fault and other interference within the above measurement range.
Copyright © 2022 SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED - www.noyafa.net All Rights Reserved.