Water Flow sensor

Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor, rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse Signal.

Wiring diagram Specification Working voltage Maximum current

5V-24V 15 mA(DC 5V)

Weight

43 g

External diameters

20mm

(Inflow and outflow) Flow rate range Operating temperature

1~30

The external diameter of thread the connections use is 1.4mm.

L/min

0℃~80℃

Operating humidity

35%~90%RH

Operating pressure

under 1.2Mpa

Store temperature

-25℃~+80℃

Store humidity

25%~90%RH

Page 1 of 2

7/5/2010

Output Table Pulse frequency (Hz) in Horizontal Test= 7.5Q, Q is flow rate in L/min. (Results in +/- 3% range)

Output pulse high level

Signal voltage >4.5 V( input DC 5 V)

Output pulse low level

Signal voltage <0.5V( input DC 5V)

Precision

3% (Flow rate from 1L/min to 10L/min)

Output signal duty cycle

40%~60%

Revision History Rev.

Descriptions

Release date

1.0

public release 1.0

31.05.2010

2.0

public release 1.0

05.07.2010

Page 2 of 2

7/5/2010

water flow sensor datasheet.pdf

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