FS300A Water Flow Meter Sensor G3/4" Flow Range 1-60L/Min

Basic Specifications

• Operating Voltage: DC 3.5V–24V
• Maximum Operating Current: 15mA (at DC 5V)
• Load Capacity: ≤10mA (at DC 5V)
• Operating Temperature: Up to 80°C
• Operating Humidity: 35%–90% RH (non-condensing)
• Operating Pressure: Less than 1.2 MPa

Technical Characteristics

• High-Level Output Pulse: Greater than DC 4.5V (with 5V input)
• Low-Level Output Pulse: Less than DC 0.5V (with 5V input)
• Measurement Accuracy (Flow to Pulse): ±3% within a flow range of 1–60 L/min
• Output Duty Cycle: 50% ±10%
• Rise Time: 0.04 μs
• Fall Time: 0.18 μs
• Flow-Pulse Relationship: Pulse frequency (Hz) = [5.5 × Q] ±3%, where Q is the flow rate in L/min
• Insulation Resistance: Greater than 100 Ω (at DC 500V)

Wiring Details

• Red Wire: Positive power input (DC 3.5V–24V)
• Yellow Wire: Signal output
• Black Wire: Ground / Negative