Author: Noyafa–Cable Tester Manufacturer
The underground pipeline detector is a new type of intelligent stethoscope for routine survey of underground pipelines, which consists of transmitter, receiver and accessories. It is mainly used for the positioning of underground pipelines, buried depth measurement and long-distance tracking, as well as measuring and finding insulation faults of pipelines. The underground pipeline detector is a new type of intelligent stethoscope used for routine survey of underground pipelines. Attachment composition. It is mainly used for the positioning of underground pipelines, buried depth measurement and long-distance tracking, as well as measuring and finding insulation fault points of pipelines.
The equipment adopts multi-coil electromagnetic technology, which greatly improves the sounding accuracy and target pipeline identification ability. It can accurately track and locate target pipelines even in dense and complex areas of pipelines. Tracking from a splice or junction box Before the transmitter signal is applied to the cable, it is necessary to disconnect the common connector on the cable so that the target line can be traced.
If all cables are to be traced from the junction box, the transmitter can be operated in inductive mode, placed on the side of the junction box in line with the cables to be traced. Tracking Cables Over Long Distances In order for the transmitter signal to travel long enough, it is necessary to remove the ground connection from the cable. When a joint or junction is grounded for safety or lightning protection reasons, a surge (overload protection) arrester ground can be used to replace the grounding of the joint or junction in order to protect the cable and enable uninterrupted positioning work.
Splice Spikes Most cable splices or junctions produce a spike in the receiver response, and experience and local knowledge can help the operator determine if the spike indicates a splice box. Metal guardrail The cable is usually buried directly under the road outside the metal guardrail on the highway, and the signal will be coupled to the continuous metal guardrail. Tracking becomes difficult because the metal guardrail is close to the receiver's lower antenna.
This difficulty can be overcome by lifting the receiver so that the lower internal antenna is level with the metal guardrail. Street lighting Under normal conditions, the metal pole of the street lamp and the metal shield of the lighting cable are connected to the metal pole. At this time, the transmitter signal can be connected to the metal pole of the street lamp. If the cement lamp post——Unless the lighting cable can be connected to the access frame and grounded, it is necessary to connect the transmitter signal to the metal shield of the lighting cable.
Knowing about the location and depth of lighting cables (and other street furniture on the same lighting system) is helpful in tracking lighting cables, where a single connection point can signal a large area of the cable. Tracking metal gas pipelines The location and tracking technology of general pipeline detectors can be used for the detection of steel gas pipelines. Some gas lines have insulated joints, and when applying the transmitter signal to the gas meter, bypass any insulating washers with jumper wires.
Doing so will provide an effective ground return for the gas line going into the house. The above is some relevant introductions about the on-site situation of the pipeline detector by Xiaobian, I hope it can be helpful to all friends.
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