YJJ AFD4040A31 5-40L/min Vortex Liquid Flowmeter for Industrial Water Cooling

Product Description:

YJJ AFD4040A31 5-40L/min Vortex Liquid Flowmeter for Industrial Water Cooling

Features:

I. Model Interpretation

4040: Measurement range 5 - 40 L/min

A31: NPN collector open-circuit pulse output, no temperature measurement, no display screen, basic needle valve model

Thread: G3/8 external thread (3 teeth), outlet M8 waterproof plug

II. Core Electrical & Measurement Range Parameters

Flow range: 5 - 40 L/min, minimum startup flow 5 L/min

Accuracy: ±3% FS; repeatability < 2% FS

Power supply: DC5V, working current ≈ 16mA

Output: NPN open-circuit pulse, fixed pulse equivalent (1 L = fixed pulse), 3.3V level, direct connection to single-chip microcomputer IO for collection

Pressure resistance: rated 1.0 MPa, short-term pressure resistance 1.6 MPa

Temperature: ambient -10 to +65℃; medium -20 to +100℃ (clear water / anti-freezing fluid / coolant)

Contact material: POM housing + 304 stainless steel diffuser column, resistant to minor impurities, no impeller to prevent pipe blockage (Karman vortex principle)

III. Series Differentiation of the Same Model

AFD4020A31: 2 - 16 L/min (low flow)

AFD4040A31: 5 - 40 L/min (medium flow)

AFD4100A31: 10 - 100 L/min (high flow)

IV. Applicable Applications

1. Industrial water cooling (main force)

Laser machines, UV equipment, PCB cooling water machine, main shaft water cooling flow protection, flow monitoring, water shortage shutdown alarm

2. New energy

Energy storage PACK liquid cooling, charging station liquid cooling circuit flow measurement, water cooling heat dissipation monitoring

3. Water purification / equipment automation

Commercial pure water machines, large coffee machines, industrial cleaning machines quantitative water control, cumulative water output statistics

4. Instruments & Chemicals

Laboratory circulating water, small dosing machine, cooling liquid circulation flow collection

Specifications: