Key Selection Factors

Author: Dijiang MaC Release time: 2025-09-14 08:45:47 View number: 83

1.
Measurement Range

Determine minimum/maximum flow rates required.
2.
Fluid Type

Consider liquid/gas properties: viscosity, conductivity, temperature.
3.
Accuracy & Precision

Critical for processes where small deviations matter.
4.
Installation Requirements

Evaluate piping type, space constraints, and mounting options.
5.
Environmental Conditions

Account for temperature, pressure, and corrosive substances.
6.
Output Type

Choose compatible signals: analog, digital, pulse.
7.
Maintenance & Calibration

Assess long-term upkeep needs.
8.
Cost

Balance initial price with performance and lifetime costs.

Type	Principle	Pros	Cons	Applications
Differential Pressure	Measures pressure drop	Widely used, cost-effective	Pressure loss	HVAC, industrial processes
Positive Displacement	Captures discrete volumes	High accuracy for viscous fluids	Mechanical wear	Fuel/oil measurement
Turbine	Rotational speed proportional to flow	High accuracy	Affected by fluid properties	Water distribution
Electromagnetic	Voltage induction in magnetic field	No pressure loss	Requires conductive fluids	Wastewater management
Ultrasonic	Sound wave measurement	Non-invasive	Expensive	Medical devices
Thermal Mass	Heat loss proportional to flow	Accurate for gases	Sensitive to temperature	Process gas monitoring
Coriolis	Coriolis force on vibrating tube	Measures mass directly	Complex design	Pharmaceuticals
Vortex	Detects vortex frequency	No moving parts	Minimum flow rate required	Steam systems