接近开关检测技术

1、精选精选ppt精选精选ppt精选精选ppt精选精选ppt精选精选ppt精选精选ppt精选精选pptThe detection coil located at the front end of the sensor produces a high-frequency magnetic field as shown in the figure . When an object (metallic) approaches this magnetic field, induced currents flow in the metal, causing thermal loss and resultin

2、g in the reduction or stopping of oscillations. This change in state is detected by an oscillation state sensing circuit which then operates the output circuit. 精选精选ppt It cannot detect non-metals in which current cannot flow, since detection is based on thermal loss due to induced current.Also, met

3、als such as ferrite, which do not allow current flow, cannot be detected.精选精选ppt精选精选ppt精选精选ppt精选精选pptThe sensing range is specified for the standard sensing object. If the sensing object is smaller, or is non-ferrous, the sensing range shortens. 精选精选ppt精选精选ppt材料衰减系数钢1不锈钢0.85黄铜0.3铜0.4精选精选ppt精选精选ppt精选

4、精选ppt介电常数表精选精选ppt 三线式精选精选ppt二线式精选精选ppt1. 当检测物体较小或较薄时，检测距离要减小。2. 电感式接近开关的接通时间为50ms，所以在设计中，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.当使用感性负载（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.

5、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。精选精选ppt物体的定位 开关位置的确认 连续通过的检测 物体的到位/通过 精选精选ppt产品计数 存在/通过 行程限位 采用电容式开关液位控制精选精选ppt采用电容式开关上下限控制 料位的控制 精选精选pptGL-N12 SERIES Low Price Square-shapedInductive Proximity SensorIt achieves a sensing range of 4mmwith a 12mm square-size sensing part. 精选精选pptThe inductive proximity se

6、nsor detects coins passing by it in a game machine. Since there is no contact, it features high reliability and long life. 精选精选pptGD SERIESMetal-sheet Double-feed DetectorThe high-end GD sensing technology reliably detects double feeds of any metal sheet 0.01mm, or more, thick. 精选精选pptDetecting Miss

7、ing Tablet Package in BoxGD-20 checks if each box contains the given number of aluminum tablet packages. 精选精选pptDetecting Steel Balls Passing through Metal Pipe The GD series perfectly detects a steel ball passing through a metal pipe, a requirement which has not been met by any beam sensor or proxi

8、mity sensor. 精选精选pptDetecting Double Feed of Metal SheetsThe long sensing range GD-20 can detect objects of different materials up to 10mm thick. 精选精选pptGA-10 SERIES GH SERIESAmplifier-separated Micro-size Inductive Proximity Sensorthe sensor head is also extremely small, the smallest being just 2.8

9、mm (GH-2S). 精选精选pptObserving Vibration of Parts-feederThe inductive proximity sensor observes the amplitude of vibration. 精选精选pptDetecting Screws on CassetteAlthough the sensor head is very small, it candetect a metal screw reliably. 精选精选pptGX-USERIESDC 2-wire CylindricalInductive Proximity Sensor 精

10、选精选pptControlling Depth of DrillingThe sensor detects the dog-clutch that determines the depth of drilling. 精选精选pptGP-A SERIESHigh Accuracy Eddy Current TypeDisplacement Sensor精选精选pptMeasuring Gap between RollersWith the high resolution analog proximity sensor GP-A series, fine gap measurement is possible to control the gap between rollers. 精选精选pptMeasuring Iron Shee