P+F超声波开关采用非接触探测,在6cm到10m范围可测量至毫米。它的原理是:超声波接近开关发出超声波脉冲,通过接收反射波计算出距离并转换输出信号。它有可达10m的远距离辨别精度达几毫米级,很好的重复性,并只需很少的维护。对于恶劣的工业环境中常见的灰尘和污物，其性能不受影响。对于液体的探测精度与固体颗粒或粉末相同,因此超声波接近开关适用范围很广,可用于液面、定位、限位或堆垛探测控制。

P+F超声波开关常见型号：

UB400-F42S-UK-V95
UB400-F42-UK-V95
UB500-F42-E6-V15
UB500-F42-E7-V15
UB500-F42-I-V15
UB500-F42S-E6-V15
UB500-F42S-E7-V15
UB500-F42S-I-V15
UB500-F42S-U-V15
UB500-F42-U-V15
UB1500-F42S-UK-V95
UB1500-F42-UK-V95
UB2000-F42-E6-V15
UB2000-F42-E7-V15
UB2000-F42-I-V15
UB2000-F42S-E6-V15
UB2000-F42S-E7-V15
UB2000-F42S-I-V15
UB2000-F42S-U-V15
UB2000-F42-U-V15
UB3000-F42-UK-V95
UB4000-F42-E6-V15
UB4000-F42-E7-V15
UB4000-F42-I-V15
UB4000-F42-U-V15
UB5000-F42-UK-V95
UB6000-F42-E6-V15
UB6000-F42-E7-V15
UB6000-F42-I-V15
UB6000-F42-U-V15
UB500-F54-E4-V15
UB500-F54-E5-V15
UB500-F54-I-V15
UB500-F54-U-V15
UB2000-F54-E4-V15
UB2000-F54-E5-V15
UB2000-F54-H3-V1
UB2000-F54-I-V15
UB2000-F54-U-V15