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 water inlet end of the water heater to detect the water flow rate. When the water passes through the water flow rotor assembly,
The magnetic rotor rotates and the speed changes with the flow rate, and the Hall sensor outputs corresponding pulses
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 erosion are strictly prohibited.
Throwing or collision is strictly prohibited.
The temperature of the medium should not exceed 120 degrees
3. Lead wire method:
1 Red IN to positive
2 Yellow OUT signal output line
3 Black GND connect to negative pole
Frequency: F=7.5*Q(L/Min) Error: ±2%
Taking the flow rate of 1L/min as the column, 7.5 * 1 * 60 is equal to the number of pulses output through 1 liter of water. Voltage: 3.5-24VDC, the current cannot exceed 10mA, after one liter of water, 450 pulses will be output
That is, frequency calculation = constant 7.5 * unit flow rate (L/min) * time (seconds)
Flow range: 1-30L/min
Four, technical parameters
Scope of application:
Suitable for water heaters, credit card machines, automatic water vending machines, and other flow metering equipment!
1. Rated working voltage
2. Large working current
15 mA (DC 5V)
3. Operating voltage range
DC 518 V
4. Load capacity
10 mA (DC 5V)
5. Operating temperature range
6. Operating humidity range
35%90%RH (no frosting state)
7. Allowable withstand voltage
Water pressure below 1.75Mpa
8. Storage temperature
9. Keep humidity