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FA22 Water Flow Sensor
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FA22 Water Flow Sensor
General Specifications
Application: This specification applies to flow sensors used in water heaters, wall-hung boilers, or similar equipment.
Operating Ambient Temperature: -20 ~ +85 °C
Operating Medium Temperature: 0 ~ +60 °C, no icing.
Operating and Test Medium: Tap water or compatible liquids.
Test Conditions: Unless otherwise specified, tests shall be carried out under the following conditions:Ambient Temperature: 5 ~ 35 °C
Relative Humidity: 45 ~ 85%
Atmospheric Pressure: 86 ~ 106 kPa (860 ~ 1060 mbar)Appearance, Structure and Dimensions
Appearance: The product shall have a good appearance, free from defects such as rust and cracks.
Structure and Dimensions: Please refer to the finished product drawing.
Product Marking: Please refer to the finished product drawing.Rated Parameters and Durability
Input Voltage: DC 5.0 ± 0.25 V
Output Voltage: DC 0 ~ 5 V; High level > 4.2 V, Low level < 0.1 V
Duty Cycle: 50%
Current Consumption: < 4 mA
Long-term Working Medium Pressure: Max. 0.8 MPa
Withstand Pressure: Max. 1.75 MPa
Frequency-Flow Equation: f = 8.1Q − 3
where:f (frequency): Hz
Q (flow rate): L/min
Initial frequency tolerance: ±10%Rated Flow Range: 1 ~ 10 L/min
Notes
The product shall not operate in a dry state for a long time, otherwise the rotor may be damaged.
The product shall not be used under conditions exceeding its rated ambient temperature and rated medium temperature, otherwise the product may be damaged.
If the medium (water) freezes, it shall be thawed slowly at room temperature. After thawing, the flow sensor must be replaced before the equipment is put into use, otherwise uncertain effects or losses may occur.
FA22 Water Flow Sensor
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