Расход meters
Reference data и engineering information about расход meters для fluid mechanics applications.
flowmeters
Overview
A comparison of common flow meter types used in engineering applications, with their operating principles, advantages, and typical accuracy.
Data Table
9 строк
Flow Meter Type | Operating Principle | Typical Range | Accuracy |
|---|---|---|---|
| Differential Pressure (orifice) | Pressure drop across constriction | Wide | ±1–2% |
| Magnetic | Faraday's law — conductive fluid moving through magnetic field | Wide | ±0.5% |
| Ultrasonic (transit time) | Time difference of ultrasonic pulses | Wide | ±1% |
| Coriolis | Mass flow induces Coriolis force in vibrating tube | Wide | ±0.1% |
| Vortex | Vortex shedding frequency behind bluff body | Medium | ±1% |
| Turbine | Rotor rotation speed proportional to flow | Wide | ±0.5% |
| Positive Displacement | Trapped volumes counted mechanically | Low–Medium | ±0.5% |
| Thermal (mass) | Heat transfer from heated element | Low–Medium | ±1% |
| Variable Area (rotameter) | Float position in tapered tube | Low | ±2% |
Источник: engineeringtoolbox.com
Notes
- Values are at standard conditions unless otherwise noted
- Always verify values for critical applications