0~250mm0~400mm物体厚度(d):0~ 30 mm0~15000mm发射器0~15000mm接收器0~15000mm,发射器和接收器已同步1~250cm10~100mm15~120mm15~200mm15~150mm15~300mm20~250mm25~400mm30~500mm30~400mm30~800mm30~250mm30~300mm30~203mm35~300mm35~500mm35~250mm40~400mm40~500mm45~500mm50~800mm50~300mm50~438mm55~500mm60~2000mm60~500mm60~800mm60~300mm60~438mm60~550mm70~1000mm70~800mm70~1500mm70~500mm80~2000mm80~1000mm80~1500mm90~2000mm100~2000mm100~1000mm150~2500mm200~4000mm200~3500mm200~3000mm200~1500mm200~2000mm250~2500mm250~4000mm350~6000mm350~5000mm800~10000mm