Vortex Flowmeter AFLOWT VT470 works on the Karman vortex street principle that swirls generated by a bluff body in the pipe. The number of swirls are proportional to the volumetric flow in the pipe. Vortex flowmeter widely used for gases, steam and liquid applications. It is ideal for measuring saturated and superheated steam in large facilities to improve steam production efficiency.

Features

• Integrated pressure and temperature compensation
• 4-20mA, pulse with HART or pulse with RS485 are selectable
• Wide temperature range up to highest temperature 350°C
• Embedded sensor, 4 piezo-electric crystal encapsulated inside the sensor
• No moving parts, no abrasion, non-wearing parts inside, fully welded SS304 body (SS316 selectable)

Application

Applications in the chemicals and petrochemicals industries, for example, in power generation and heat-supply systems involve widely differing fluids:

• saturated steam, superheated steam,
• compressed air, nitrogen, liquefied gases, flue gases, carbon dioxide,
• fully demineralized water,
• solvents,
• heat-transfer oils,
• boiler feedwater,
• condensate, etc.

Parameters

Measured Medium	Liquid, Gas, Steam
Medium Temp.	-40～＋250℃; -40～＋350℃ (high temperature type)
Pressure	Flange	DIN PN10/PN16/PN25/PN40 JIS10K/20K/30K/40K ANSI 150#/300#
	Wafer	4.0MPa
	Thread	1.6MPa
	Tri-clamp	1.6MPa
	Insertion	1.6MPa
Accuracy	±1.0% (Flange/Wafer/Thread/Tri-clamp) ±1.5% (Insertion type)
Flow Range	Liquid:0.4-7.0m/s; Gas:4.0-60.0m/s; Steam:5.0-70.0m/
Specifications	DN15-DN300 (flange/wafer type) DN80-DN2000 (insertion type) DN15-DN100 (thread/sanitary type)
Body Material	SS304 (standard) SS316 (optional)
Reynolds Number	Normal 2x10⁴~7x10⁶
Resistance Coefficient	Cd≦2.6
Vibration Acceleration Allowed	≦0.2g
IEP ATEX	II IG Ex ia IIC T5 Ga
Ambient Condition	Ambient Temp.	-40℃~65℃ (Non ex-proof site) -20 ~55 (Ex-proof site)
	Relative Humidity	≦85%
	Pressure	86-106kPa
Power Supply	DC12-30V or 3.6V lithium battery powered
Signal Output	4-20mA, Pulse
Communication	RS485 Modbus or HART