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High Accuracy Vortex Flow Meter Aosong AFD4020R01 Based On Von Karman Vortex Measurement Principle

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High Accuracy Vortex Flow Meter Aosong AFD4020R01 Based On Von Karman Vortex Measurement Principle

Description : Flow Switch RoHS

Mfr. Part # : AFD4020R01

Model Number : AFD4020R01

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AFD4 Series Vortex Liquid Flow Meter

Product Overview
The AFD4 series is a vortex liquid flow meter based on the Von Karman vortex principle, designed for accurate and reliable flow measurement. It features excellent repeatability, high precision, low pressure loss, and resistance to contamination due to its no-moving-parts design. The sensor measures the frequency of vortices shed by a bluff body to calculate the fluid flow rate. Its long lifespan, fast response, and drift-free operation make it an ideal choice for cost-sensitive OEM applications in demanding industrial environments, energy metering, environmental protection, laboratories, and transportation.

Product Attributes

Brand: ASAIR (Guangzhou Aosong Electronics Co., Ltd.)
Principle: Von Karman vortex
Contact Liquid Material: PPS/SUS304 (Stainless Steel)
Certifications: ASAIR
Origin: China

Technical Specifications

Model	Flow Range (L/min)	Fluid Temperature Range (C)	Flow Accuracy (%F.S.)	Temperature Accuracy (%F.S.max. @25C)	Repeatability (% F.S.)	Pressure Rating (bar)	Environmental Temperature (C)	Power Supply (VDC)	Process Connection	Signal Output	Body Length (L) (mm)	Installation Hole (A) (mm)	Installation Hole (B) (mm)	Body Height (H)	Thread Size (G/RC/NPT)	Nominal Diameter (DN)
AFD4020	216	090	<3.0%	5%	<2.0%	10 (Max 16)	-1065	1828	G/RC/NPT	4-20mA, RS485, NPN, PNP, 1-5V	110	40	15	40X40	3/8 or 1/2	10
AFD4040	540	090	<3.0%	5%	<2.0%	10 (Max 16)	-1065	1828	G/RC/NPT	4-20mA, RS485, NPN, PNP, 1-5V	121	40	15	40X40	1/2 or 3/4	15
AFD4100	10100	090	<3.0%	5%	<2.0%	10 (Max 16)	-1065	1828	G/RC/NPT	4-20mA, RS485, NPN, PNP, 1-5V	110	40	20	45X45	3/4 or 1	20
Communication Parameters (RS485): Baud Rate: 9600bps, Data Bits: 8, Stop Bits: 1, Parity: None, Protocol: Modbus RTU. Default Address: 0x01.
Wiring: Brown (Power+), White (485A/Temp Output), Blue (Power-), Black (485B/Flow Output). Specific pin assignments vary by output type.
Safety Torque: 3/8: 22-24 Nm, 1/2: 28-30 Nm, 3/4: 28-30 Nm, 1: 36-38 Nm.
Warranty: 12 months for AFD4XXX sensors from date of shipment.

2504101957_Aosong-AFD4020R01_C45350947.pdf

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