优势供应：欧姆龙E3J系列光电开关
技术***;0757-63314314 招镇城
1.工作原理
电感式接近开关属于一种有开关量输出的位置传感器，它由LC高频振荡器和放大处理电路组成，利用金属物体在接近这个能产生电磁场的振荡感应头时，使物体内部产生涡流。这个涡流反作用于接近开关，使接近开关振荡能力衰减，内部电路的参数发生变化，由此识别出有无金属物体接近，进而控制开关的通或断。这种接近开关所能检测的物体必须是金属物体。
2.注意事项
1：当检测物体为非金属时，检测距离要减小，另外很薄的镀膜层也是检测不到的。
2：电感式接近开关的接通时间为50ms，所以在用户产品的设计中，当负载和接近开关采用不同电源时，务必先接通接近开关的电源。
3: 当使用***负载（如灯、电动机等）时，其瞬态冲击电流较大，可能劣化或损坏交流二线的接近开关，在这种情况下，请经过交流继电器作为负载来转换使用。
4: 请勿将接近开关置于200Gauss以上的直流磁场环境下使用，以免造成误动作。
5：DC二线的接近开关具有0.5-1mA的静态泄漏电流，在和一些对DC二线接近开关泄漏电流要求较高的场合下尽量使用DC三线的接近开关。
6：避免接近开关在化学溶剂，特别是在强酸，强碱的环境下使用。
某品牌产品的技术指标:
| E3JK-5L 2M | 261.25 |
| E3JK-5M1 2M BY OMC | 306.25 |
|
E3JK-5M1 5M |
811.25 |
| E3JK-5M1-1 10M | 961.49 |
| E3JK-5M1-1 5M | 1241.25 |
| E3JK-5M1-US | 742.5 |
| E3JK-5M1-ZH1 5M BY OMC | 686.25 |
| E3JK-5M2 2M BY OMC | 306.25 |
| E3JK-5M2 5M BY OMC | 398.75 |
| E3JK-5M2-ZH2 5M BY OMC | 610 |
| E3JK-5S3 2M | 848.75 |
|
E3JK-D11 2M BY OMC |
137.23 |
| E3JK-D31 2M BY OMC | 139.47 |
| E3JK-D61 2M BY OMC | 137.43 |
| E3JK-D81 2M BY OMC | 139.68 |
| E3JK-DS30M1 2M BY OMC | 237.5 |
| E3JK-DS30M1 5M | 570 |
| E3JK-DS30M1-US 2M | 512.5 |
| E3JK-DS30M2 2M BY OMC | 237.5 |
| E3JK-DS30S3 2M | 823.75 |
| E3JK-R11 2M BY OMC | 154.28 |
| E3JK-R12 2M BY OMC | 152.92 |
| E3JK-R2H1-G 2M | 462.5 |
| E3JK-R2H2-G 2M | 528.75 |
| E3JK-R2M1 2M BY OMC | 237.5 |
| E3JK-R2M2 2M BY OMC | 237.5 |
| E3JK-R2M2 5M | 552.5 |
| E3JK-R2M2. 2M | 507.5 |
| E3JK-R2R3 2M | 726.25 |
| E3JK-R2S3 2M | 845 |
| E3JK-R31 2M BY OMC | 156.53 |
| E3JK-*** 2M BY OMC | 155.16 |
| E3JK-R3M1-01 2M | 448.75 |
| E3JK-R4M1 2M BY OMC | 237.5 |
| E3JK-R4M1-ZH 2M BY OMC | 205 |
| E3JK-R4M2 2M BY OMC | 237.5 |
| E3JK-R4M2 5M | 587.5 |
| E3JK-R4M2 6M BY OMC | 244.93 |
| E3JK-R4M2-US | 556.25 |
| E3JK-R4M2-ZH 2M BY OMC | 205 |
| E3JK-R4S3 2M | 841.25 |
| E3JK-R61 2M BY OMC | 154.48 |
| E3JK-R62 2M BY OMC | 153.12 |
| E3JK-R81 2M BY OMC | 156.73 |
| E3JK-R82 2M BY OMC | 155.36 |
| E3JK-T11 2M BY OMC | 185.84 |
| E3JK-T31 2M BY OMC | 187.21 |
| E3JK-T61 2M BY OMC | 186.04 |
| E3JK-T81 2M BY OMC | 187.46 |
| E3JM-10DM4 BY OMC | 470 |
| E3JM-10DM4 OMC | 470 |
| E3JM-10DM4-G BY OMC | 470 |
| E3JM-10DM4-G OMC | 470 |
| E3JM-10DM4T BY OMC | 542.5 |
| E3JM-10DM4T OMC | 542.5 |
| E3JM-10DM4T-G BY OMC | 542.5 |
| E3JM-10DM4T-G OMC | 542.5 |
| E3JM-10DR4-G BY OMC | 696.25 |
| E3JM-10DR4-G OMC | 696.25 |
| E3JM-10DR4T-G BY OMC | 763.75 |
| E3JM-10DR4T-G OMC | 763.75 |
| E3JM-10DS4-G BY OMC | 697.5 |
| E3JM-10DS4-G OMC | 697.5 |
| E3JM-10DS4T-G BY OMC | 765 |
| E3JM-10DS4T-G OMC | 765 |
| E3JM-10L BY OMC | 292.5 |
| E3JM-10L OMC | 292.5 |
| E3JM-10L-G BY OMC | 293.75 |
| E3JM-10L-G OMC | 293.75 |
| E3JM-10M4 BY OMC | 688.75 |
| E3JM-10M4 OMC | 688.75 |
| E3JM-10M4-G BY OMC | 691.25 |
| E3JM-10M4-G OMC | 691.25 |
| E3JM-10M4T BY OMC | 761.25 |
| E3JM-10M4T OMC | 761.25 |
| E3JM-10M4T-G BY OMC | 761.25 |
| E3JM-10M4T-G OMC | 761.25 |
| E3JM-10R4-G BY OMC | 846.25 |
| E3JM-10R4-G OMC | 846.25 |
| E3JM-10R4T-G BY OMC | 912.5 |
| E3JM-10R4T-G OMC | 912.5 |
| E3JM-10S4 BY OMC | 846.25 |
| E3JM-10S4 OMC | 846.25 |
| E3JM-10S4-G BY OMC | 846.25 |
| E3JM-10S4-G OMC | 846.25 |
| E3JM-10S4T BY OMC | 912.5 |
| E3JM-10S4T OMC | 912.5 |
| E3JM-10S4T-G BY OMC | 912.5 |
| E3JM-10S4T-G OMC | 912.5 |
| E3JM-DS70M4 BY OMC | 461.25 |
| E3JM-DS70M4 OMC | 461.25 |
| E3JM-DS70M4-G BY OMC | 462.5 |
|
E3JM-DS70M4-G OMC |
462.5 |
| E3JM-DS70M4T BY OMC | 527.5 |
| E3JM-DS70M4T OMC | 527.5 |
| E3JM-DS70M4T-G BY OMC | 527.5 |
| E3JM-DS70M4T-G OMC | 527.5 |
| E3JM-DS70M4-US BY OMC | 462.5 |
| E3JM-DS70M4-US OMC | 462.5 |
| E3JM-DS70R4-G BY OMC | 617.5 |
| E3JM-DS70R4-G OMC | 617.5 |
| E3JM-DS70R4T-G BY OMC | 682.5 |
| E3JM-DS70R4T-G OMC | 682.5 |
| E3JM-DS70S4 BY OMC | 617.5 |
| E3JM-DS70S4 OMC | 617.5 |
| E3JM-DS70S4-G BY OMC | 617.5 |
| E3JM-DS70S4-G OMC | 617.5 |
| E3JM-DS70S4T BY OMC |