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型号及参数:
品牌:克特
型号:LJ18A3-8-J/EZ-G
外形:圆柱体 径直18MM
输出方式:交流二线常开型
检测距离:8mm
电源电压:90-250VAC
输出电流:300mA
可检测物体:金属体
外壳材料:金属(铜)
接近开关定义:
电感式接近开关由高频振荡,检波,放大,触发及输出电路组成.振荡器在检测面产生一个交变磁场当有金属物体接近其检测面时,金属中产生的涡流吸收振荡器的能量,使其减弱至停振.振荡器的振荡与停振这两种状态的转换成一个电信号通过检波,放大后触发输出电路
检测距离 | 8mm ± 10% | |||
设定距离 | 0―7mm | |||
滞后距离 | 检测距离的10%以下 | |||
检测物体 | 磁性金属(非磁性金属时检测距离减小) | |||
标准检测物体 | 铁30*30*1mm | |||
响应频率 | DC:0.5kHz AC:25Hz | |||
电源电压 | 直流型:DC12―24V(6-36V)脉动(P-P)10%以下, 交流型:AC110―220V(36―250V)50/60Hz | |||
耐电压 | AC1000V 50/60Hz 1min充电部分与外壳间 | |||
电压的影响 | 额定电源电压范围±15%以内、额定电源电压值时±10%检测距离以内 | |||
消耗电流 | N.P型:13mA以下,D型:0.8mA以下,A型:1.7mA以下 | |||
控制输出 | N.P型:300mA以下,D型:200mA以下,A型:400mA以下 | |||
回路保护 | N.P.D型:逆连接保护、浪涌吸收、负载短路保护,A型:浪涌吸收 | |||
环境温、湿度 | 动作时、保存时:各-30―+65℃ (不结冰、不结霜),动作时、保存时:各35―95%RH | |||
温度的影响 | 温度范围-30―+65℃,+23℃时、±15%检测距离以内 温度范围-25―+60℃,+23℃时、±10%检测距离以内 | |||
绝缘阻抗 | 50MΩ以上(DC500兆欧表)充电部分与外壳间 | |||
材质 | 外壳:黄铜镀镍 检测面:ABS | |||
保护构造 | IP67(IEC规格) |
克特接近开关的选型
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.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。
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。
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。
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。
Selection of KTGEE Proximity Switch
For different materials of detection bodies and detection distances, different types of proximity switches should be selected to have a high performance to price ratio in the system. Therefore, the following principles should be followed in the selection:
When the detection body is made of metal materials, a high-frequency oscillation type proximity switch should be selected. This type of proximity switch is most sensitive to detecting iron nickel and A3 steel detection bodies.
For aluminum, brass, and stainless steel detection bodies, their detection sensitivity is low.
When the detection body is made of non-metallic materials, such as; Capacitive proximity switches should be used for materials such as wood, paper, plastic, glass, and water.
When metal and non-metal materials need to be detected and controlled remotely, photoelectric or ultrasonic proximity switches should be selected.
4. When the detection body is made of metal, if the detection sensitivity is not required, low-cost magnetic proximity switches or Hall type proximity switches can be selected.