Product pipeline locator is the use of the theory of electromagnetic signals to detect underground metal pipes and cables position. It is composed by the receiver and the transmitter, the receiver allows the operator to accurately detect underground metal pipe or cable position. Pipeline locator's main purpose is to provide protection for the safe excavation, underground facilities identified with the type of instrument, but also the characteristics of the facility identification and tracking. Identification and tracking of underground facilities, the operator by means of this instrument can be quickly and accurately complete the underground facilities plane positioning and depth measurement tasks, thus three-dimensional positioning of underground facilities. Performance parameters ◆ Weight: 2.8kg, lighter than the T10 36% ◆ 8 节 D-cell battery box (instead of 12 D-cells) ◆ accessory box (ground clamp, direct connection, grounding wire) ◆ plug attachments (using Lei Di all attachments) ◆ conspicuous label ◆ 12V car charger / power charger / insulation ◆ Touch waterproof keyboard ◆ High contrast LCD display frequency ambient light triggers the backlight ◆ Other Help pipeline locator has become a modern communication and pipe line maintenance of the basic tool, stable performance, accurate positioning, efficient operation of the product can adapt to the requirements of today's rising line maintenance. As HGD-01 type product improvement, HGD-04A-type pipe locator advanced design, easy to use, accurate measurement, intuitive display, in a variety of complex electromagnetic environment have a good performance, which to the best value for money in the telecommunications, power, petrochemical and municipal engineering and other fields are widely used. HGD-04A-type pipe locator using electromagnetic field theory, mainly consists of a transmitter and a receiver, for the precise positioning of underground pipeline route, depth measurement and description of long-distance pipelines EFT payment transaction tracking, payment and delivery .