chapter  58
Vortex-Shedding Flowmeters
Pages 14

Industrial vortex-shedding žowmeters are normally available in pipe sizes ranging from 15 to 300 mm (1/2-12 in.), with some manufacturers o¥ering sizes up to400 mm (16 in.). Flow ranges covered depend on žuid properties and meter design. Typical ranges for a 15 mm meter are

• Water at 21 °C (70 °F), 0.06-2.2 L s−1 (1-35 gal min−1) • Air at 16 °C (60 °F) and 101 kPa (14.7 psia), 1.1-15.7 L s−1 (140-2000 £3 h−1) • Dry saturated steam at 689 kPa (100 psig), 4.5-225 kg h−1 (10-500 lb h−1)

Typical ranges for a 300 mm (12 in.) meter are

• Water at 21 °C (70 °F), 5.4-5400 L s−1 (85-8500 gal min−1) • Air at 16 °C (60 °F) and 101 kPa (14.7 psia), 157-12,500 L s−1 (20,000-1,600,000 £3 h−1) • Dry saturated steam at 689 kPa (100 psig), 1,240-124,000 kg h−1 (2,750-275,000 lb h−1)

58.1 Introduction .................................................................................... 58-1 58.2 Principle of Operation ...................................................................58-2 58.3 Calculation of Mass Flow and Standard Volume ......................58-4 58.4 Flowmeter Construction ...............................................................58-4

Meter Selection • Meter Installation • Meter ConŸguration 58.6 Recent Developments ................................................................... 58-11

Multisensor • Single Sensor Further Information .................................................................................58-12 Partial List of Vendors and Manufacturers ...........................................58-12

Temperature capability ranges from cryogenic temperatures up to 427 °C (800 °F). Pressure capability as high as 20.7 MPa (3000 psig) is available.