RS232/RS-485通讯线生产厂家
详细介绍
RS232/RS-485通讯线适用于EIA RS-232/422通讯网络，是楼宇自控、工业控制网络、电力自动化等通讯网络的常用电缆型号。
产品描述：特性阻抗100欧姆，导体为2*2*24AWG多股镀锡电解铜丝绞合而成，花色绝缘护套宜于安装识别，铝箔/聚酯带总体100%屏蔽，附加d.u立多股绞合镀锡铜丝接地导体，工业灰色PVC外护套，
RS-485通讯电缆适用于江森自控、西门子楼宇、霍尼韦尔、TAC等楼控系统通讯线。
产品描述：标准的1对RS-485通讯电缆，特性阻抗为120欧姆，导体为2*24AWG多股绞合镀锡铜丝，PE绝缘介质，由铝箔/聚酯复合带100%覆盖+镀锡铜丝90%覆盖共二重屏蔽，附有d.u立接地导线，符合UL 2919文件。
RS-485通讯电缆
RS-485通讯电缆在一般场合采用双绞线就可以，但在要求比较高的环境下可以采用带屏蔽层的双绞电缆。在使用RS485通讯时，对于特定的传输线路，主机（召测设备）到仪表的485口间的电缆长度与数据信号传输的波特率成反比；这个长度主要受信号的失真以及噪声的影响所影响。理论上RS485的传输距离能达到1200米，但实际应用中传输距离要小于1200米，具体长度受周围的环境影响。
| 芯数×标称截面mm2绝缘厚度mm屏蔽层密度%护套厚度mm平均外径或外形尺寸mm20℃时导体电阻大值Ω/km70℃时绝缘电阻小值MΩ·km下限上限铜芯镀锡铜芯1×0.080.460～800.42.42.92472540.0181×0.120.460～800.42.43.01581630.0161×0.20.460～800.42.63.292.395.00.0131×0.30.560～800.42.93.569.271.20.0141×0.40.560～800.43.03.748.249.60.0131×0.50.560～800.43.13.839.040.10.0121×0.750.560～800.43.44.126.026.70.0101×1.00.660～800.64.14.919.520.00.0101×1.50.660～800.64.35.213.313.70.0091×2.50.760～800.64.96.07.988.210.0082×0.080.460～800.43.22.4×3.54.22.9×4.22472540.0182×0.120.460～800.63.72.8×4.04.93.4×4.91581630.0162×0.20.460～800.64.13.0×4.45.33.6×5.392.395.00.0132×0.30.560～800.64.8<, /SPAN><, DIV align,='ce, , , , , , , , , nter'>3.5×5.16.24.2×6.269.271.20.0142×0.40.560～800.65.13.6×5.46.64.4×6.648.249.60.0132×0.50.560～800.65.33.7×5.66.84.5×6.839.040.10.0122×0.750.560～800.65.84.0×6.17.44.8×7.426.026.70.0102×1.00.660～800.66.44.3×6.78.25.2×8.319.520.00.0102×1.50.660～800.87.34.9×7.69.26.0×9.313.313.70.0093×0.120.460～800.63.95.11581630.0163×0.20.460～800.64.55.892.395.00.0133×0.30.560～800.65.16.569.271.20.0143×0.40.560～800.65.46.948.249.60.0133×0.50.560～800.65.67.139.040.10.0123×0.750.560～800.66.17.826.026.70.0103×1.00.660～800.87.29.119.520.00.0103×1.50.660～800.88.010.013.313.70.0094×0.120.460～800.64.55.81581630.0164×0.20.460～800.64.96.292.395.00, .0, 13, |
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