Products
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Active locating utilizes both the transmitter and the receiver. By applying a signal with the transmitter, the operator can trace the path of the utility with the receiver. Different utilities respond better to different frequencies, and the TW-8800 has three frequencies the operator can choose from: 82 kHz, 8.2 kHz, and 820 Hz.
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The passive locating method utilizes only the receiver. This method of locating uses signals that are inherently associated with the utility. The TW-8800 has two modes for passive locating: 50Hz/60Hz (power) and 14 kHz to 30 kHz (radio). The power mode senses the electromagnetic fields on energized electrical lines. The radio mode senses the re-radiated radio waves that are occasionally associated with utilities. Often these signals are weak, so to assist the operator, we added a feature that oscillates the signal, thus allowing the signal to be heard.
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Depth measurement to 16 ft. depending on conductor size, measurement mode, soil conditions. Automatic gain control for maximum sensitivity. Display gives intuitive 'left-right' signalling for accurate location of buried utilities.
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Designed for the most rugged field duty; weatherproof, durable. Made in the USA and comes with a two-year warranty.
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Tracing kit includes transmitter and receiver, ground rod, ground plate assembly and hard carrying case.
Fisher TW-8800 数字管道和电缆定位器（三频）
主动定位利用发射器和接收器。通过使用发射器施加信号，操作员可以使用接收器追踪公用事业的路径。不同的实用程序对不同的频率响应更好，TW-8800 具有三种频率可供操作员选择：82 kHz、8.2 kHz 和 820 Hz。
被动定位方法仅利用接收器。这种定位方法使用与公用事业固有关联的信号。 TW-8800 有两种无源定位模式：50Hz/60Hz（功率）和 14 kHz 至 30 kHz（无线电）。电源模式感应通电电线上的电磁场。无线电模式检测偶尔与公用事业相关联的重新辐射的无线电波。这些信号通常很弱，因此为了帮助操作员，我们添加了一个功能，可以振荡信号，从而让信号被听到。
深度测量可达 16 英尺，具体取决于导体尺寸、测量模式、土壤条件。自动增益控制以获得最大灵敏度。显示器提供直观的“左右”信号，用于准确定位埋地设施。
专为最坚固的现场工作而设计；防风雨，经久耐用。在美国制造，并提供两年保修。
跟踪套件包括发射器和接收器、接地棒、接地板组件和硬质手提箱。
