5916 电极检测器

Electroding Detector Model 5916

探测器用于将海底电缆定位在深达180米（100 f）的水中。通过诸如Tinsley 5915型单元的电极发生器沿海底电缆传输4Hz至40Hz范围内的信号。该信号由连接到检测器的一组牵引探针拾取。探测器和接收探测器通常在修理船上，但是，由于它们是便携式的，探测器可以从任何本地可用的船舶或发射器操作。接收到的信号被处理并传递给模拟前面板仪表，如果安装，则输入图表记录仪。

通常，Tinsley 5915型电极发生器位于靠近断层区域的海底电缆终端。电磁探测器，Tinsley 5916型号在船上。当船舶位于电缆区域附近时，5915电极发生器通电，从而将低频信号施加到被测电缆上。在这些频率下，信号场延伸到电缆周围的水中相当长的距离。船舶通常会在预期的故障位置的陆地一侧转向穿过电缆的路线。在达到该位置之前，船舶启动接收探头，然后探测器将连接到探测器。

探测器（通过指轮开关）设置为岸上电极发生器传输的频率。当船穿过电缆时，电缆上的信号电流场将电压感应到探头中。然后由电极检测器处理该信号，并记录仪表上的偏转。这可以通过可选的内置图表记录器记录。

出于识别目的，可以定期打开和关闭电极发生器。

一旦识别并确认了电缆信号，船舶就会沿着锯齿形路线跟随电缆，直到信号消失。发生这种情况时，已找到故障或中断。在标记浮标上使用NAVSAT将标记上次检测到信号的点。可以进行进一步的探测运行以更精确地固定故障位置。

The Detector is used to locate submarine cables in water of up to 180 metres (100 fathoms) in depth. A signal in the range of 4 Hz to 40 Hz is transmitted down the submarine cable by an Electroding Generator such as the Tinsley type 5915 unit. This signal is picked up by a set of trailed probes connected to the detector. The Detector and receiving probes are normally aboard the repair ship, however, as they are portable, the detector may be operated from any locally available ship or launch. The received signal is processed and passed to the analogue front panel meter and if fitted, chart recorder.

Normally, the Electroding Generator, Tinsley type 5915, is located in the submarine cable terminal nearest to the fault area. The Electroding Detector, Tinsley type 5916 is aboard the ship. When the ship is in the vicinity of the cable area, the 5915 Electroding Generator is powered thus applying the low frequency signal to the cable under test. At these frequencies, the field of the signal extends into the water surrounding the cable for a considerable distance. The ship would normally steer a course to cross the cable on the landward side of the expected fault position. Before this position is reached, the ship launches the receiving probe(s) which will then connect to the detector.

The Detector is set (by thumbwheel switch) to the frequency being transmitted by the Electroding Generator on shore. As the ship crosses the cable, the field of the signal current on the cable induces a voltage into the probe(s). This signal is then processed by the Electroding Detector and a deflection on the meter is registered. This may be recorded by the optional built-in chart recorder.

For identification purposes, the Electroding Generator may be keyed on and off periodically.

Once the cable signal has been identified and confirmed, the ship then follows the cable on a zigzag course until the signal disappears. When this happens, the fault or break has been located. Use of NAVSAT on a marker buoy would mark the point where the signal was last detected. Further probe runs may be made for a more precise fix of the fault position.

请参阅下表，了解本产品规格的详细信息。

See the table below for a run-down of this product’s specifications.