Turbine and Other Rotary Element Flowmeters

A. Turbine flowmeters A-1. Single-Rotor A-2. Dual-Rotor B. Propeller, impeller, and shunt-flow types C. Insert, probe, or paddlewheel designs Services Relatively clean liquids, gases, and vapors (some units for gas service are also covered in Section 2.2) Sizes A-1. 3/16 to 24 in. (5 to 610 mm) in flow-through designs A-2. 0.25 to 12 in. (6.12 to 294 mm) in flow-through designs B. Impeller designs available from 3 to 72 in. (75 mm to 1.8 m) C. Paddlewheel units available for up to 12 in. (305 mm) pipes; insertion turbine probes not limited by pipe size, can also be used in open channels Outputs Generally, linear frequency outputs are provided, but 4- to 20-mA DC can also be obtained through conversion Operating Pressure A-1. 1500 PSIG (10.3 MPa) in standard and 5000 PSIG (34.5 MPa) in special designs A-2. ANSI 150 PSIG (1.03 MPa) up to ANSI 1500 PSIG (10.3 MPa) B. Impeller designs usually designed for 150 PSIG (1 MPa) C. Plastic paddlewheel units operable up to 200 PSIG (1.4 MPa) at ambient temperatures Pressure Drops A. Usually, one veloc

2.25 Turbine and Other Rotary Element Flowmeters J G KOPP (1969) J B ARANT D J LOMAS (1982) B G LIPTÁK (1995) FI FE Flow Sheet Symbol (2003) Types A Turbine flowmeters A-1 Single-Rotor A-2 Dual-Rotor B Propeller, impeller, and shunt-flow types C Insert, probe, or paddlewheel designs Services Relatively clean liquids, gases, and vapors (some units for gas service are also covered in Section 2.2) Sizes A-1 3/16 to 24 in (5 to 610 mm) in flow-through designs A-2 0.25 to 12 in (6.12 to 294 mm) in flow-through designs B Impeller designs available from to 72 in (75 mm to 1.8 m) C Paddlewheel units available for up to 12 in (305 mm) pipes; insertion turbine probes not limited by pipe size, can also be used in open channels Outputs Generally, linear frequency outputs are provided, but 4- to 20-mA DC can also be obtained through conversion Operating Pressure A-1 1500 PSIG (10.3 MPa) in standard and 5000 PSIG (34.5 MPa) in special designs A-2 ANSI 150 PSIG (1.03 MPa) up to ANSI 1500 PSIG (10.3 MPa) B Impeller designs usually designed for 150 PSIG (1 MPa) C Plastic paddlewheel units operable up to 200 PSIG (1.4 MPa) at ambient temperatures Pressure Drops A Usually, one velocity head or about to PSIG (20 to 35 kPa) B Usually less than PSID (7 kPa) for the impeller types C Negligible Operating Temperature A-1 −58 to 300°F (−50 to 150°C) in standard and −328 to 840°F (−200 to 450°C) in extended pickup designs A-2 −440 to 840°F (−268 to 450°C) B Up to 160°F (71°C) for the impeller design C The plastic paddlewheel units operable at up to 220°F (105°C) if operating pressure is