Swimming pool meter Water flow sensor interface 1.25 inch Large flow YF-DN32 3.5-12V 5-24V

 Swimming pool  meter Water flow sensor interface 1.25 inch Large flow  YF-DN32 3.5-12V  5-24V

 
Product wiring: red +, black-, yellow for pulse signal output

Features:

1.The appearance of this product is light and handy, small in size, easy to install.

2.The interior of the impeller is turned from traditional point support to surface rotation to extend the service life.

3.The sealing ring adopts the structure of the upper and lower stresses to never leak.

4.The Hall element is imported from Germany and encapsulated with potting glue to prevent water ingress and never aging.

5. All raw materials comply with ROHS testing standards

1. Product introduction:

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 inlet end of the water heater and is used to detect the inlet water flow. When the water passes through the water flow rotor assembly,

The magnetic rotor rotates and the speed changes with the flow rate change, the Hall sensor outputs the corresponding pulse

The signal is fed back to the controller, and the controller judges the size of the water flow and regulates it.

 Precautions for use:

Severe impact and chemical attack are strictly prohibited.
Throwing or collision is strictly prohibited.
The medium temperature should not exceed 1000C.
Second, the output waveform: square wave

3. Leading wire method:

Common three Y line

Red IN connected to positive

 Yellow OUT signal output line

 Black GND connected to negative

 Frequency: F = 0.45 * Q (L / Min) Error: ± 2% Voltage: 3.5-24VDC, current cannot exceed 10mA, and output 27 pulses after one liter of water

That is, frequency calculation = constant 0.45 * unit flow rate (L / min) * time (seconds) flow rate range: 2-120L / min

4. Technical parameters

 Scope of application:

Suitable for water heaters, credit card machines, automatic vending machines, and other flow measurement equipment!

 base this Ginseng number

1. Minimum rated working voltage

DC4.5

2. Maximum working current

15 mA (DC 5V)

3. Working voltage range

5V-24V

4. Load capacity

≤10 mA (DC 5V)

5. Operating temperature range

≤80 ℃

6. Operating humidity range

35% ~ 90% RH (no frosting)

7. Allow pressure

Water pressure below 1.75Mpa

8. Storage temperature

-25 ~ + 80 ℃

9. Preserve humidity

25% ~ 95% RH  Skill Technique Want begging

1. High level of output pulse

> DC 4.5 V (input voltage DC 5 V)

2. Low level of output pulse

<DC 0.5 V (input voltage DC 5 V)

3. Precision

 (Flow-pulse output)

Within 2 ~ 120 L / min ± 1%

4. Output pulse duty cycle

50 ± 10%

5. Output rise time

0.04μS

6. Output fall time

0.18μS

7. Flow-pulse characteristics

Horizontal test pulse frequency (Hz) = [0.45Q] ± 2% (horizontal test) (Q is the flow rate L / min)

8. Impact resistance

The product is packaged well, and it falls freely from the X, Y, Z direction of 50cm height to the concrete surface without abnormality.

The accuracy changes within 10%.

9. Insulation resistance

The insulation resistance between the Hall sensor and the copper valve body is more than 100MΩ. (DC 500V)

10. Heat resistance

Place it in 80 ± 3 ℃ environment for 48h, return to normal temperature for 1-2h without any abnormality, and the parts are free from cracks, slack, expansion, deformation and other phenomena, and the accuracy changes within 10%.

11. Cold resistance

Place in -20 ± 3 ℃ environment for 48h, return to normal temperature for 1-2h without any abnormality, and the parts are free from cracks, slack, expansion, deformation and other phenomena, and the accuracy changes within 10%.

12. Moisture resistance

Insulated at 40 ± 2 ℃, relative humidity 90% ~ 95% RH for 72h, the insulation resistance is more than 1MΩ.

13. Drawing strength

Tensile force of 10N is applied on the lead wire for 1 minute without loosening or breaking, and the performance is unchanged.

14. Durability

At normal temperature, the water pressure of 0.1MPa is introduced from the water inlet, and the cycle is 1S and 0.5S.