1. Wprowadzenie
The EGBO YF-S401 Water Flow Sensor is designed to measure the flow rate of liquids, commonly used in applications such as water heaters, coffee machines, credit card machines, and automatic sales machines. It operates by detecting the rotation of a magnetic rotor within the sensor, which changes with the flow rate, and outputs a corresponding pulse signal to a controller.
2. Funkcje produktu
- Kompaktowa konstrukcja: Light, convenient, small size, and easy to install.
- Durable Impeller: Features an impeller inlaid with a stainless steel shaft for wear resistance.
- Leak-Proof Sealing: Equipped with a high-quality Dingqing rubber sealing ring (imported from Japan) to ensure a leak-free structure.
- Waterproof Hall Components: Hall components are imported and potted with glue to prevent water entry and ensure longevity.
- Zgodny z RoHS: All raw materials meet ROHS testing standards.
3. Specyfikacje
| Parametr | Wartość |
|---|---|
| Model | YF-S401 |
| Zakres roboczy | 0.3 - 6 L/min |
| Lowest Rated Operating Voltage | Prąd stały 3.5 V - 12 V |
| Objętość roboczatage Zakres | Prąd stały 5 V - 18 V |
| Maksymalny prąd roboczy | 15 mA (at DC 5V) |
| Nośność | ≤ 10 mA (at DC 5V) |
| Zakres temperatur pracy | ≤ 80°C |
| Zakres wilgotności roboczej | 35% - 90% RH (frost-free) |
| Allowable Water Pressure | ≤ 1.75 MPa |
| Temperatura przechowywania | -25°C do +80°C |
| Wilgotność przechowywania | 25% - 95% wilgotności względnej |
| Przebieg wyjściowy | Fala kwadratowa |
| Impulsy na litr | 330 impulsów/litr |
| Frequency Calculation (F) | F = 5.5 * Q(L/Min) - 3 (Error: ±2%) |
Note: Q represents the flow rate in Liters per Minute (L/Min).
4. Instalacja i okablowanie
4.1 Instalacja
The YF-S401 water flow sensor is typically installed at the inlet end of a water system (e.g., water heater, coffee machine) to detect the incoming flow rate. Ensure the flow direction matches the arrow indicated on the sensor body.
4.2 Wiring Instructions (Lead Mode)
The sensor comes with a 3-wire or 4-wire harness. Follow the color-coded connections:
- Red Wire (IN): Connect to the positive terminal of your power supply (e.g., +5V to +18V DC).
- Yellow Wire (OUT): This is the signal output line, providing the pulse signal to your controller.
- Czarny przewód (GND): Connect to the negative electrode (ground) of your power supply.
- Green Wire (R - Temperature Induction): (If present) This wire is for temperature induction, typically for a 3950K 50K thermistor. Connect according to your specific temperature sensing requirements.
Upewnij się, że napięcie zasilaniatage mieści się w określonej objętości roboczejtage range (DC 5V-18V) and the current does not exceed 10mA for the signal output.
5. Działanie
Once installed and wired correctly, the sensor will output a square wave pulse signal proportional to the water flow rate. A controller (e.g., microcontroller like Arduino) can read these pulses to calculate the flow. The frequency (F) of the output pulse can be calculated using the formula: F = 5.5 * Q(L/Min) - 3, where Q is the flow rate in Liters per Minute. The sensor outputs approximately 330 pulses per liter of water.
The output waveform is a square wave, which is easily readable by digital input pins on most microcontrollers.
6. Konserwacja
The EGBO YF-S401 sensor is designed for durability with its stainless steel shaft and potted Hall components. Regular maintenance is minimal, but consider the following:
- Kontrola: Periodically check for any signs of leakage around the connections.
- Czyszczenie: If used in environments with potential for sediment buildup, occasional flushing with clean water might be beneficial, ensuring no harsh chemicals are used.
- Warunki środowiskowe: Ensure the sensor operates within its specified temperature and humidity ranges to prevent damage.
7. Rozwiązywanie Problemów
- No Signal Output:
- Check wiring connections (Red to positive, Black to GND, Yellow to signal input).
- Sprawdź napięcie zasilaniatage mieści się w zakresie 5V–18V prądu stałego.
- Ensure water is flowing through the sensor.
- Inspect for any physical damage or blockages in the sensor.
- Niedokładne odczyty:
- Confirm the sensor is installed in the correct flow direction.
- Check for air bubbles in the water line, which can affect accuracy.
- Ensure the controller's pulse counting logic is correctly implemented based on the 330 pulses/liter specification.
- Verify the medium temperature does not exceed 80°C.
- Przeciek:
- Tighten connections, but do not overtighten.
- Inspect the sealing ring for damage.
- Ensure water pressure is below 1.75 MPa.
8. Środki ostrożności
- Impact and Chemicals: Strictly prohibit severe impact and exposure to chemical erosion.
- Obsługiwanie: Do not throw or collide the sensor.
- Ograniczenia temperatur: The medium temperature should not exceed 120 degrees Celsius, although the operating range is specified up to 80 degrees Celsius for optimal performance. Adhere to the 80°C operating limit.
- Limity ciśnienia: Ensure the water pressure remains below 1.75 MPa.
- Bezpieczeństwo elektryczne: Always disconnect power before installing or servicing the sensor. Ensure correct polarity when wiring.
9. Wskazówki użytkownika
Chociaż nie było dostępnych żadnych konkretnych wskazówek dla użytkownikówviews, here are some general recommendations for optimal use:
- For precise flow measurement, calibrate your controller's readings against a known flow rate.
- Consider using appropriate connectors and sealing tape to ensure watertight connections.
- If integrating with a microcontroller, refer to online resources and community forums for example code and projects related to YF-S401 or similar Hall effect flow sensors.
10. Gwarancja i wsparcie
For warranty information and technical support, please refer to the official EGBO Store or the retailer from whom you purchased the product. A detailed user manual in PDF format may also be available for download from the seller's product page or by contacting customer support.
Dokument referencyjny: User manual (PDF) - View PDF