特點：靈敏性調整簡單，受測定物特性和周圍環境的影響極小，可以承受大的塊狀物體的沖擊。
應用：廣泛的應用于粉體（水泥、小麥粉、飼料等等）。粒體(小球狀肥料等等)、塊狀物體（煤炭、石灰石、礦石等等）的測量
選型表 阻旋式物位開關RB型(NOHKEN物位)Model RB Rotating-Paddle Level Sensor for Hecvy duty Page.12 Code Base Model Type and Application Mtg.Size and Maerial Shaft length Max.temp. RB20N Standard plug mounting G1 99mm 50℃ RB20F Standard flange mounting JIS5K65A(t=5mm),Steel 82mm 50℃ RB21FBV Shaft extension,3000mm Max. JIS5K65A(t=5mm),Steel 300mm 50℃ RB21FL Pipe extension,1000mm Max. JIS5K65A(t=6mm),304SS 300mm 50℃ RB21FT Heat proof JIS5K65A(t=6mm),304SS 132mm 250℃ RB21FLT Pipe extension with heat proof JIS5K65A(t=6mm),305SS 300mm 180℃ ↓ Code Supply power ↓ 1 100V AC ±5%,50/60Hz ↓ 2 110V AC ±5%,50/61Hz ↓ 3 120V AC ±5%,50/62Hz ↓ 4 200V AC ±5%,50/63Hz ↓ 5 220V AC ±5%,50/64Hz ↓ 6 240V AC ±5%,50/65Hz ↓ ↓ Code Length of contact part ↓ ↓ Null Standard ↓ ↓ □□□□ Specify desired length ↓ ↓ ↓ RB20N 1 → RB21N-1
