ขาย พร้อมส่ง-YF-S401 Coffee machine flow meter water flow sensor 0.3-6 L/Min ราคาที่ดีที่สุด

พร้อมส่ง-YF-S401 Coffee machine flow meter water flow sensor 0.3-6 L/Min Product Descriptions Water flow sensor is mainly composed of plastic valve body, water flow rotor assembly and Hall sensor. It is installed at the water inlet end of the water heater and is used to detect the water inlet flow rate. When water passes through the water flow rotor assembly, The magnetic rotor rotates and the speed changes with the change of flow rate, and the Hall sensor outputs corresponding pulses. The signal is fed back to the controller, and the controller determines the size of the water flow and regulates it. Notes for use: Strict impact and erosion by chemicals are strictly prohibited. Do not throw or bump. Medium temperature should not exceed 120 degrees Output waveform: square wave Pinout method: 1. Red IN to positive 2. yellow OUT signal output line 3. Black GND connected to negative 4. Green R temperature sensor (3950K 50K or 3950K please choose according to your requirements) Frequency: F = 5.5 * Q (L / Min) -3 Error: ± 2% Voltage: 3.5-24VDC, current cannot exceed 10mA, output 330 pulses after one liter of water That is frequency calculation = constant 5.5 * unit flow (L / min) * time (seconds) -3 Features: 1.This product is light and handy, small in size and easy to install. 2. The impeller is set with a stainless steel shaft inside. 3.The sealing ring is made of butyl acrylic imported from Japan, and the structure under the upper and lower stress will never leak. 4.Hall components are imported and packaged with potting glue to prevent water ingress and never age. 5.All raw materials are in compliance with ROHS testing standards Product Parameters: Scope of application: Suitable for water heaters, credit card machines, automatic water vending machines, etc. - Minimum rated operating voltage: DC3.5 5V-24V - Maximum working current: 15 mA (DC 5V) - Working voltage range: DC 5 ～ 18 V - Load capacity: ≤10 mA (DC 5V) - Using temperature range: ≤80 ℃ - Using humidity range: 35% ～ 90% RH (without frosting) - Allowable pressure: Water pressure below 1.75 Mpa - Storage temperature: -25 ～ + 80 ℃ - Storage humidity: 25% ～ 95% RH - External thread: 1/4" - Size: 5.8 cm. x 3.4 cm. x 2.6 cm - Color: White