Description

Pulse Induction Metal Detector – Digital Output – Single Channel

High-Sensitivity Metal Detection Sensor – With Flexible Calibration Settings

Key Features:

• ⚙️ User-Adjustable Calibration Controls
  Fine-tune sensitivity and detection thresholds with ease. Supports multiple custom detection coil configurations thanks to flexible calibration options.

• 🔄 Input Reverse Polarity Protection
  Prevents damage to the sensor and connected circuits if the power supply is connected with reversed polarity.

• ⚡ Output Short Circuit Protection
  Built-in protection for the output driver circuit against accidental short circuits, ensuring long-term safety and reliability.

• 💡 Digital LED Indicators

  • Power LED: Indicates the sensor is properly powered.

  • Detection LED: Lights up when a metallic object is detected.

• 🔊 Audible Buzzer Output
  Provides a clear audio alert upon metal detection — ideal for use in noisy or low-visibility environments.

• 🌙 Low Power Sleep Mode
  Digital enable/disable input allows the sensor to enter ultra-low power mode when not in use.

• 📏 Compact and Durable Design
  Optimized for integration into portable or embedded systems with a robust layout.

Technical Specifications:

• Input Supply Voltage Range: 6V – 32V

• Nominal Supply Voltage: 12V

• Current Consumption @12V:

  • Normal Operation: 110mA

  • Sleep Mode: 0.5mA

• Default Detection Coil Parameters:

  • Inductance: 1.1 mH

  • Resistance: 2.5 Ohm
    (Supports other custom coils via calibration)

• Board Dimensions:

  • PCB Only: 80mm × 58mm

  • PCB + Terminal Block: 88.6mm × 58mm

  • PCB + Terminal Block + Plugs: 108mm × 58mm

Calibration Steps for Maximum Detection Distance:

1. Make sure the sensor is fixed in its working environment, powered on, and connected to the detection coil. Calibration must be done in the actual operating environment.

2. Rotate the Distance Potentiometer fully clockwise.

3. Rotate the Sensitivity Potentiometer counterclockwise until the detection LED turns on.

4. Rotate the Sensitivity Potentiometer slowly clockwise until the detection LED turns off.

5. Rotate the Distance Potentiometer counterclockwise until the detection LED turns on.

6. Rotate the Distance Potentiometer slowly clockwise again until the LED turns off.

💡 Tip: To decrease the overall sensitivity, rotate either the Sensitivity or Distance potentiometers clockwise.