Product Description:

YJJ AFD4020A33 Vortex Liquid Water Flow-Sensor 2-16L/min RS485 With Temp-Display for Chemical

Features:

I. Detection Principle

Based on von Kármán vortex street principle, equipped with MEMS piezoelectric sensing chip; when fluid flows through the restrictor, vortices are generated, and the frequency of the vortices is proportional to the liquid flow rate. There are no moving parts for wear inside, and it is resistant to impure liquids and has strong stability.

II. Core Performance Parameters

Standard flow range: 2 - 16 L/min

Measurement accuracy: < ±3.0% FS

Repeatability error: ≤ 2.0% FS

Fluid allowable temperature: 0℃ - +90℃ (the medium cannot freeze or condense)

Working pressure specification: conventional working pressure 10 bar, instantaneous withstand pressure upper limit 16 bar

III. Electrical Parameters

Power supply voltage: DC 18 - 28 VDC

Current output configuration: NPN pulse signal output; optional 4 - 20mA, 1 - 5V, RS485 - Modbus, PNP output

Response speed: Fast vortex signal acquisition, suitable for instantaneous liquid flow monitoring

IV. Environmental and Physical Specifications

Sensor working environment temperature: -10℃ - +65℃

Contact liquid material: SUS304 stainless steel + PPS engineering plastic, resistant to common water-based chemicals

Pipe interface: G3/8 internal thread

Main body size: main body 40×40mm, total length 59.3mm, hexagonal locking 31mm

V. Core Product Advantages

Internal no moving parts, no mechanical wear, long service life, low maintenance volume in the future

Low pressure loss flow channel, very small pipeline pressure loss, good energy-saving effect

Resistant to minor impurities, not prone to clogging, suitable for industrial water circulation, chemical dosing conditions

Rich output methods, can be connected to PLC, flow meter upper computer software

Optional integrated needle valve, directly integrates flow regulating valve, eliminates external valve accessories

Specifications: