OF05ZAT Liquid Flow Rate Sensor G3/8 DN10 for Milk Gasoline Oil Diesel

Specifications:

• Model: OF05ZAT
  
• Sensor Type: Oval Gear (Positive Displacement)
  
• Thread Size: G3/8" inch (DN10)
  
• Flow Range: 30 - 300 L/H (Optimized for viscous fluids)
  
• Working Voltage: DC 3.5V - 24V
  
• Max Working Pressure: 1.2 MPa
• Operating Temperature: -20°C to +70°C

Applications:

• Fuel Management Systems: Monitor diesel consumption in generators or heavy machinery.
  
• Vending Machines: Precise dispensing of milk, coffee, or syrups.
  
• Hydraulic Systems: Monitor oil flow for preventative maintenance.
  
• Chemical Dosing: Handle non-corrosive viscous chemicals in automation lines.
  
• IoT Fluid Logging: Connect to an ESP32 to send usage data to the cloud.

Project Evolution:

From Water to "Heavy" Liquids If you have mastered the basic YF-S201 Water Flow Sensor, you know it spins freely with water but stalls with oil. The OF05ZAT unlocks the ability to work with High-Viscosity Fluids.

• Feature Upgrade: This sensor allows you to build projects that standard sensors simply can't touch—like an automated oil change system or a smart kerosene dispenser.
• Effort Level: Intermediate. Requires understanding of Interrupts in code and proper plumbing sealing.
• Hardware Requirements:
• Microcontroller (Arduino/ESP32/STM32)
• Basic plumbing (G3/8 pipes/hoses)
• Pull-up Resistor: Recommended (10kΩ) for stable signal readings on longer wires.

⚠️ Critical Warning:

• Direction Matters: Oval gear sensors are directional. Look for the arrow on the body indicating flow direction. Installing it backward will result in zero readings.
  
• Filtration: Oval gears can jam if debris enters the chamber. Always install a mesh filter before the sensor inlet.

Pinout Guide

• Red Wire: VCC (3.5V - 24V DC)
  
• Black Wire: GND (Ground)
  
• Yellow Wire: Signal (Pulse Output)

Package Includes:

 1 X OF05ZAT Liquid Flow Rate Sensor G3/8 DN10 for Milk Gasoline Oil Diesel

Frequently Asked Questions (FAQ)

1. Can I use this sensor with Petrol/Gasoline?
   Yes, the materials are generally compatible, but always ensure proper sealing and avoid high-heat
2. environments.Does this work with drinking water?
   Yes, but it is overkill. Standard turbine sensors are cheaper for water. This is best for thick liquids.
3. What is the K-factor for this sensor?
   The pulse frequency varies by viscosity. You must calibrate it (using a measuring jar) for your specific liquid.
4. Can I use this with an Arduino Uno?
   Yes, use attachInterrupt() on digital pin 2 or 3 to read the pulses.
5. Will this work with thick honey?
   It can handle syrup-like consistency, but extremely thick honey may prevent the gears from turning or cause high pressure drop.
6. What is the minimum pressure required?
   Very low. Since it is positive displacement, it works well even with gravity feed systems if the head pressure is sufficient.
7. Is it food grade?
   The material is PP, which is generally food safe, but it is not certified food-grade for commercial dairy processing. Sanitize properly.
8. Can I use it with 24V PLC systems?
   Yes, it supports up to 24V input. Ensure your PLC input can read the pulse frequency.
9. How accurate is this sensor?
   Typically ±0.5% to ±1% after calibration for the specific liquid being measured.
10. Why am I getting zero readings?
    Check flow direction (arrow), ensure voltage is correct, and verify no debris has jammed the gears.
11. Does it need a pull-up resistor?
    The signal is a Hall Effect pulse; a 10k internal or external pull-up is recommended for clean signals.
12. Can I submerge this sensor?
    No, the electronic cap is not IP68 waterproof. Keep the electronics dry.
13. What pipe size fits G3/8?
    G3/8 is approximately 16.66mm outer diameter. You need standard G3/8 female couplers.
14. Does it work with 3.3V logic (ESP32)?
    Yes, it works down to 3.5V VCC, so it is compatible with 3.3V logic if powered correctly.
15. How do I clean it?
    Flush with warm soapy water or a compatible solvent. Do not open the gear chamber unless necessary.
16. Can it measure air flow?
    No, it is designed for liquids only.
17. What is the maximum temperature?
    70°C. Do not use with boiling liquids.
18. Is the output analog or digital?
    Digital Pulse (Frequency).
19. Can I use it for corrosive acids?
    No, the internal shaft and magnets may corrode. Use sensors specifically rated for acids.
20. What happens if air bubbles go through?
    It will count air as liquid volume, leading to inaccuracies. Ensure the line is full of liquid.