3500/42-09-00 输入输出模块

本特利延伸电缆是连接探头和前置器的中间部件，其安装应保证在使用过程中不易受到损坏，信号传输正常可靠。本特利延伸电缆的外表是用聚四氟乙烯密封的，探头内部结构也已绝缘，但是

延伸电缆和探头电缆的接头是与信号“地”相联接的，而且接头金属表面是裸露的。为了避免联接处和机壳接触以及加强其防护性，安装时将延伸电缆接头与探头高频接头用手拧紧联接好，然后将套管套在接头处，这样起到绝缘和保护作用。本特利延伸电缆有两种，一种是有带铠装，另一种是不带铠装两种，管道铺设采用不带铠装的延伸电缆。不能随意剪断过长的电缆或加长电缆，若是有过长的电缆，需要将其盘成直径不小于50mm的圆形用绑带扎紧后，用压片将其固定。在选型时，应保证延伸电缆的长度加探头电缆的长度之和，大于探头安装处到前置器安装处的距离，而且通常前置器都是集中安装在机器的同一侧。

The Bentley extension cable is an intermediate component connecting the probe to the preamplifier and should be installed so that it is not susceptible to damage during use and that signal transmission is normal and reliable. The exterior of the Bentley extension cable is sealed with PTFE and the internal structure of the probe is insulated.

However, the connectors of the extension cable and the probe cable are connected to the signal "ground" and the metal surface of the connectors is exposed. In order to avoid contact between the joints and the enclosure and to enhance their protection, the extension cable connector and the probe high-frequency connector are hand-tightened during installation, and then the sleeve is placed over the joints, thus providing insulation and protection. Bentley extension cable has two kinds, one is with armour, the other is not with armour two kinds, pipe laying with extension cable without armour. Can not arbitrarily cut too long cable or lengthen the cable, if there is too long cable, you need to disc into a circle with a diameter of not less than 50mm with straps tightened with a pressure plate to fix it. In the selection, it should be ensured that the sum of the length of the extension cable plus the length of the probe cable is greater than the distance from the probe installation to the preamplifier installation, and usually the preamplifier is centrally installed on the same side of the machine.