See flowmeter measurement media type as follows:

Vortex flowmeter gas \ liquid \ steam (various probes) Viscosity requirements may contain a small amount of particles

Electromagnetic flowmeter (conductive) liquid can contain a small amount of particles

V-cone flowmeter Gas \ liquid \ steam Viscosity requirements

Liquid Turbine Flowmeter Liquids Have Viscosity Requirements

Metal Floater Flowmeter Gas\Liquid\Steam Requiring Viscosity

Liquid Ultrasonic Flowmeter Liquids Requirements on Viscosity/Particles

Gas Ultrasonic Flowmeter Gas Requirements for Viscosity/Particles

Gas Turbine Flow Meter Gases Viscosity/Particles Required

Precession vortex flowmeter Gas Required for viscosity/grain

Volumetric flowmeters (waist, gear) gas\liquid Requirements for viscosity/particles

These flowmeters, in addition to the external clamp type of the ultrasonic wave flowmeter, are flowmeters in which the sensor contacts the medium, so they must be related to the viscosity and corrosivity of the medium. When measuring corrosive media, the flowmeter can be retrofitted. Lining and changing the material of the wetted material. For viscous media, for example: When measuring liquid, if it is too viscous (too much viscosity), the wheel of the turbine flowmeter will be stuck and it will not rotate at all. The vortex flowmeter and precession swirl flow If the viscosity is too large, the linear Reynolds number range will be exceeded.

Therefore, when selecting the flowmeter, it is necessary to put forward the actual situation and requirements of the site, and then consult the manufacturer of the instrument to select the appropriate measuring instrument!