Overview
The YF-B1-S Stainless Steel Liquid Flow Sensor (1/2 inch) is a precision-engineered flow measurement device for accurate measuring of liquid flow in pipes. Featuring a robust stainless-steel body and durable internal components, it ensures high corrosion resistance, long lifespan, and stable performance in harsh environments.
This sensor operates on a wide voltage range of 3.5V to 24V DC, generating a pulse signal proportional to the flow rate. With a measurement range of 1–25 L/min (±3%), it’s ideal for applications like water dispensers, industrial control systems, and smart water monitoring. Its G1/2 thread design ensures easy installation, and the compact 66 mm body allows it to fit into tight spaces.
The sensor provides a high-level output signal (>DC 4.5 V) and low-level output (<DC 0.5 V) at 5 V DC input, making it compatible with most microcontrollers, PLCs, and IoT systems. Designed for temperatures up to 80 °C, it maintains accuracy and reliability even under demanding operating conditions.
Specification
Technical details for YF-B1-S Stainless Steel Liquid Flow Sensor - 1/2 inch Diameter.
| Specification | Details |
|---|---|
| Model | YF-B1-S |
| Operating Voltage | 3.5 – 24 V DC |
| Flow Range | 1 – 25 L/min ± 3% |
| Pulse Characteristic | Hz = (18 × Q − 3) ± 5% (Q = flow rate in L/min) |
| Maximum Pressure | ≤ 1.75 MPa |
| Pipe Size | G 1/2 inch (4 分) |
| Inner/Outer Diameter | Inlet Ø15 mm / Outlet Ø13.5 mm / Outer Ø20.5 mm |
| Thread Length | 20 mm |
| Body Length | 50 mm |
| Max Working Current | 15 mA (DC 5 V) |
| Load Capacity | ≤ 10 mA (DC 5 V) |
| Operating Temperature | ≤ 80 °C |
| High-Level Output | > DC 4.5 V (input DC 5 V) |
| Low-Level Output | < DC 0.5 V (input DC 5 V) |
| Storage Temperature / Humidity | −25 ~ 80 °C / 25% ~ 95% RH |
Dimensions
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