Variable Area Flow Meter For Air

​This Variable Area Flow Meter For Air is a speed flow meter. It uses the Karman vortex theory to measure the flow rate of a fluid by using a piezoelectric crystal to detect the vortex frequency generated by a fluid passing through a triangular prism in a pipe.

Product Details

This Variable Area Flow Meter For Air is a speed flow meter. It uses the Karman vortex theory to measure the flow rate of a fluid by using a piezoelectric crystal to detect the vortex frequency generated by a fluid passing through a triangular prism in a pipe.

Air vortex flowmeters have many advantages as air flow measurements. It has high accuracy, simple structure, convenient installation and good reliability. This device has a pulse frequency signal whose output is proportional to the flow measurement value, and has no zero drift, which is convenient for flow accumulation measurement and its pressure loss is small.

Specifications

Measurement TypeDifferential Pressure and Static Pressure
Accuracy0.40 Beta: ±0.75% of flow rate / 0.50 & 0.65 Beta: ±1.15% of flow rate
StabilityUp to ±0.15% of Upper Range Limit (URL) for 15 years
WarrantyUp to 15-year limited warranty
RangedownUp to 200:1 (14:1 flow turndown)
Measurement RangeUp to 2000 psi (137,89 bar) differential, Up to 3626 psia (250,00 bar) absolute, Up to 3626 psig (250,00 bar) gage
Line Size2 to 12 in. (50 to 300 mm)
OutputDifferential pressure, static pressure, scaled variable
Communication ProtocolWirelessHART
Process Wetted Material316 SST
DiagnosticsBasic Diagnostics
 Certifications/Approvals:NACE, hazardous location, see full specs for complete list of certifications
Update Rate1 sec. to 60 min., user selectable
Power Module LifeUp to 10-year life, field replaceable (order separately)
 Wireless RangeLong range (225 m), extended range (800 m), remote (225 m) and high-gain remote (1 km)

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