Flow Strainers, Impellers, Magnetic sensing pickups.
- good for telemetry
- errors may be caused 'coz of excessive frictional torque.
- suitable for slurry, sludges etc
- Adv: size adaptability,No pressure drop
- Disad: for heavy slurry, high operating cost.
Hot Wire Anemometers
Ultrasonic flow meter
- used mainly for liquid
- useful for bidec tional flow
- Adv:linear relationship
- Adv:insensitive to variation in viscocity, density and temp
- Disadv: complexity
- Disadv: relative high cost