YJJ AFD4020A31 2-16L/min Vortex Liquid Flow Sensor for Industrial Water Cooling / Laser Equipment

Product Description:

YJJ AFD4020A31 2-16L/min Vortex Liquid Flow Sensor for Industrial Water Cooling / Laser Equipment

Features:

I. Core Parameters

Range specification (standard for AFD4020)

Liquid flow rate: 2 - 16 L/min (clear water / coolant), minimum startup flow rate 2 L/min

Interface thread: G3/8 (3 external threads), M8 electrical outlet

Model A31 definition

A: NPN pulse collector open-circuit output (standard pulse signal, 1L ≈ fixed pulse count)

31: No temperature measurement, no display, basic standard version (without needle valve)

Electrical parameters

Power supply: DC 5V ± 0.5V, working current ≈ 15mA

Output: NPN open-circuit pulse, high level ≈ VCC, low level ≈ 0V, can be directly connected to single-chip microcomputer IO

Pressure resistance: ≤ 1.0 MPa, medium temperature 0 - 60℃ clear water, anti-freezing liquid

Principle: Karman vortex street, internal no mechanical rotor, no wear, resistant to impurities and not prone to clogging

Accuracy: ± 3% FS, repeatability ± 1%, low pressure loss

II. Output Selection Supplement (same series available for selection)

PN: PNP pulse; V: 1 - 5V analog; mA: 4 - 20mA; 485: RS485 Modbus-RTU

III. Product Usage

1. Water purification / drinking water machine / coffee machine

Quantitative water output control, pure water machine flow measurement, coffee machine water output counting, water heater water flow monitoring

2. Industrial water cooling / laser equipment

Laser water cooling circulation flow detection, PCB water cooling machine flow break protection, industrial control water cooling water shortage alarm

3. New energy / energy storage

Energy storage PACK liquid cooling flow collection, charging station water cooling circuit flow statistics

4. Environmental protection / instruments

Laboratory small water machine, water quality analyzer, small dosing equipment quantitative water control

IV. Selection Distinction

AFD4020: 2 - 16 L/min (A31 this model)

AFD4040: 5 - 40 L/min

AFD4100: 10 - 100 L/min

Specifications: