简要说明：光电开关的重要功能是能够处理光的强度变化：利用光学元件，在传播媒介中间使光束发生变化；利用光束来反射物体；使光束发射经过长距离后瞬间返回。光电开关是由发射器、接收器、光电开关和检测电路三部分组成。

YAMATAKE 山武全系接近开关

AZBIL 山武接近开关 光电开关 防爆开关等

上海浜田实业有限公司

钱小姐

电话：021-34721059

传真：021-34721159

QQ：2366245531

www.bang-tian.com

www.sanyomotor.com

接近开关也叫近接开关，又称无触点行程开关，它除可以完成行程控制和限位保护外，还是一种非接触型的检测装置，用作检测零件尺寸和测速等，也可用于变频计数器、变频脉冲发生器、液面控制和加工程序的自动衔接等。特点有工作可靠、寿命长、功耗低、复定位精度高、操作频率高以及适应恶劣的工作环境等。

接近开关在航空、航天技术以及工业生产中都有广泛的应用。在日常生活中，如宾馆、饭店、车库的自动门，自动热风机上都有应用。在安全防盗方面，如资料档案、财会、金融、博物馆、金库等重地，通常都装有由各种接近开关组成的防盗装置。在测量技术中，如长度，位置的测量；在控制技术中，如位移、速度、加速度的测量和控制，也都使用着大量的接近开关。

山武接近开关

YAMATAKE接近开关

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接近开关的选型

　　对于不同的材质的检测体和不同的检测距离，应选用不同类型的接近开关，以使其在系统中具有高的性能价格比，为此在选型中应遵循以下原则：

　　1.1.当检测体为金属材料时，应选用高频振荡型接近开关，该类型接近开关对铁镍、A3钢类检测体检测最灵敏。

　　对铝、黄铜和不锈钢类检测体，其检测灵敏度就低。

　　1.2.当检测体为非金属材料时，如;木材、纸张、塑料、玻璃和水等，应选用电容型接近开关。

　　1.3.金属体和非金属要进行远距离检测和控制时，应选用光电型接近开关或超声波型接近开关。

　　1.4.对于检测体为金属时，若检测灵敏度要求不高时，可选用价格低廉的磁性接近开关或霍尔式接近开关。

YAMATAKE 山武全系接近开关

AZBIL 山武接近开关 光电开关 防爆开关等

上海浜田实业有限公司

钱小姐

电话：021-34721059

传真：021-34721159

QQ：2366245531

www.bang-tian.com

www.sanyomotor.com