YF-S201 3/4″ Water Flow Sensor

Description

The water flow sensor is mainly composed of a plastic valve body, a water flow rotor assembly and a Hall sensor.

It is installed at the water inlet end of the water heater to detect the influent flow rate as it passes through the water flow rotor assembly.

The magnetic rotor rotates and the rotational speed changes with the flow rate and the Hall sensor outputs a corresponding pulse.

The signal is fed back to the controller, and the controller determines the magnitude of the water flow and performs regulation.

The sensor has three connections, two for power supply and one output (yellow). Flow rate can be easily calculated, a pulse is approximately 2.25ml. If it is positioned and calibrated correctly, the accuracy of approximately 10%.

Calculation formula: Flow rate (l / min) = Frequency (Hz) /7.5.

Specifications

• Sensor type: Hal effect

• Working voltages: 5 – 18V DC

• Current: 15mA to 5V

• Exit: 5V TTL

• Flow rate: 1 – 30 l / m:

• Working temperatures from -25oC to + 80oC

• Humidity Accepted Conditions: 35% – 80% RH

• Accuracy: ± 10%

• Maximum water pressure: 2.0 MPa

• Output filling factor: 50% + -0%

• Exit rise time: 0.04us

• Down Time Output: 0.18us

• Pulses / liter: 450

• Minimum lifetime of 300,000 cycles

• Cord length: 15cm

• 1/2 “tube connections, 0.78” outer diameter

• Dimensions: 2.5 “x 1.4” x 1.4 “