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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