Inline Liquid Flow Rate Sensor


Inline Liquid Flow Rate Sensor


“This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There's an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.

The sensor comes with three wires: red (5-24VDC power), black (ground) and yellow (Hall effect pulse output). By counting the pulses from the output of the sensor, you can easily calculate water flow. Each pulse is approximately 2.25 milliliters. Note this isn't a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure and sensor orientation. It will need careful calibration if better than 10% precision is required. However, its great for basic measurement tasks!”


Connectors: RED = +5VDC power input, BLACK = GND, YELLOW = PWM output

Sensor Type: Hall effect

Working Voltage: 5 to 18V DC (min. tested working voltage 4.5V)

Max current draw: 15mA @ 5V

Output Type: 5V TTL

Working Flow Rate: 1-30 L/min

Working Temperature range: -25 to +80℃

Working Humidity Range: 35%-80% RH

Accuracy: ±10%

Maximum water pressure: 2.0 MPa

Output duty cycle: 50% +-10%

Output rise time: 0.04us

Output fall time: 0.18us

Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)

Pulses per Liter: 450

Cable length: 15cm

1/2" NPT connections, 1/2" of thread

Size: 65mm x 35mm x 35mm


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