Overview
The YF-DN50-S is a high-precision 2-inch liquid flow sensor made from durable 304 stainless steel, designed for measuring water flow in industrial and commercial applications.
It operates at DC 5V (with a working voltage range of DC 3.5–24V) and supports a flow rate from 10 to 200 liters per minute with an accuracy of ±5%. The inlet diameter is 46.5mm, outlet is 44mm, and outer diameter is 59mm, with a thread length of 20mm.
It can withstand water pressure up to 1.75 MPa and has an insulation resistance of over 100 MΩ. The sensor produces pulse signals at a rate of approximately 12 pulses per liter with a duty cycle of 50% ±10% and a high-level output above DC 4.7V.
It passes both high and low-temperature tests, maintaining ±5% accuracy after exposure to -20°C and 85°C for 72 hours.
Specification
| Specification | Details |
|---|---|
| Model | YF-DN50-S |
| Interface Size | 2 inch |
| Rated Voltage | DC 5V |
| Inner Diameter / Outer Diameter | Inlet: 46.5mm, Outlet: 44mm / Outer: 59mm |
| Thread Length | 20mm |
| Material | 304 Stainless Steel |
| Water Pressure Resistance | ≤ 1.75 MPa |
| Operating Voltage Range | DC 3.5V ~ 24V |
| Insulation Resistance | > 100 MΩ |
| Flow Rate Range | 10 – 200 L/min ±5% |
| Flow Pulse Characteristics | (0.2 * Q) Q = L/min ±3%, approx. 12 pulses per liter |
| Pulse High Output Level | > DC 4.7V (at input voltage DC 5V) |
| Pulse Duty Ratio | 50% ±10% |
| Low Temperature Test | After 72h at -20°C and 1h at room temp, accuracy within ±5% |
| High Temperature Test | After 72h at 85°C and 1h at room temp, accuracy within ±5% |
Dimensions
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