Taidacent Non-Contact Liquid Level Sensor User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the Taidacent Non-Contact Liquid Level Sensor (Model Y25-V). This intelligent sensor utilizes advanced signal processing technology for non-contact liquid level detection in closed containers, suitable for various liquids including toxic substances, strong acids, and alkalis.

Figure 1: Taidacent Non-Contact Liquid Level Sensor (Model Y25-V)

2. Product Features

• Advanced signal processing technology for non-contact detection.
• Capable of detecting liquid levels through container walls.
• Suitable for various liquids including toxic, strong acid, and strong alkali.
• Designed for non-metallic pipe liquid level detection.
• High and low level output: High level when induced, low level when not induced.
• Adjustable sensitivity via a small screw.

3. Setup and Installation

The sensor is designed for easy installation on the outer wall of non-metallic containers or pipes. For optimal performance, ensure the sensing surface is closely adhered to the container wall.

3.1. General Installation Guidelines

• The liquid to be tested must be electrically conductive.
• The contact surface of the container must be non-metal.
• Ensure the sensor is firmly attached to the outer wall of the container. Adhesives like AB glue or strong glue are recommended.
• The gap between the sensor's contact surface and the outer wall of the cistern should be less than 0.5mm, preferably no gap.

3.2. Installation on Non-Metallic Containers

For non-metallic containers (e.g., glass, plastic, non-absorbent ceramics), the sensor can be directly pasted to the outer wall at the desired detection level.

Figure 2: Sensor attachment to the outer wall of a non-metallic vessel.

Figure 3: Installation diagrams for single (top) and dual (bottom) sensors on non-metallic containers for high and low level detection.

3.3. Installation on Metal Containers

For metal containers (e.g., copper, iron, stainless steel, aluminum alloy, or metal materials with plating), a rubber stopper and adhesive are used to create a non-metallic interface for the sensor.

Figure 4: Installation diagrams for single (top) and dual (bottom) sensors on metal containers.

3.4. Installation on Pipes

The sensor can also be installed on external pipes. For non-metallic pipes, direct attachment with glue and a rubber stopper is typical. For metal pipes, a trigeminal screw thread adapter is used to create the necessary non-metallic interface.

Figure 5: Installation diagrams for single (left) and dual (right) sensors on external non-metallic pipes.

Figure 6: Installation diagrams for single (left) and dual (right) sensors on external metal pipes.

Figure 7: Sensor installation on an iron pipe with a three-prong joint (left) and direct attachment to a non-metallic water pipe (right).

3.5. Wiring

The sensor typically provides high and low level output. Refer to the product's specific wiring diagram for connection to your control system (e.g., MCU, water pump controller).

4. Operating Instructions

Once installed and powered, the sensor will detect the presence or absence of liquid at its sensing point. The output will be a high level if liquid is detected (induced) and a low level if no liquid is detected (no induction).

4.1. Sensitivity Adjustment

The sensor's sensitivity can be adjusted to suit different container wall thicknesses or liquid properties. To adjust:

1. Carefully remove the plastic cover of the sensor.
2. Locate the very small screw (potentiometer) on the circuit board.
3. Turn the screw clockwise to decrease sensitivity.
4. Turn the screw counter-clockwise to increase sensitivity.
5. Test the sensor's response after each adjustment to ensure desired performance.

Figure 8: Close-up view of the sensor, showing the label with model information. The adjustment screw is located under the plastic cover.

5. Maintenance

The Taidacent Non-Contact Liquid Level Sensor is designed for low maintenance. Regular checks include:

• Ensure the sensor remains firmly attached to the container or pipe.
• Keep the outer surface of the sensor and the contact area of the container clean and free from debris or excessive moisture that could interfere with detection.
• Verify power connections are secure.

6. Troubleshooting

If the sensor is not functioning as expected, consider the following:

• No Detection or Incorrect Reading:
  • Check power supply (12 Volts).
  • Ensure the sensor is securely and tightly adhered to the container wall with no significant air gaps.
  • Adjust sensitivity (refer to Section 4.1). Thicker container walls or certain liquid properties may require increased sensitivity.
  • Verify the liquid is electrically conductive.
  • Confirm the container material is non-metallic at the sensing point, or that a proper non-metallic interface (e.g., rubber stopper with adhesive) is used for metal containers/pipes.
• Inconsistent Readings:
  • Re-adjust sensitivity. Sometimes fine-tuning is required for precise detection points.
  • Ensure the sensor is not exposed to excessive vibration or external electrical interference.
• Sensor LED Status: Observe the sensor's indicator light (if present) for diagnostic clues. A red light typically indicates detection.

7. Specifications

8. Warranty and Support

For warranty information or technical support, please contact the manufacturer, Taidacent, or the seller from whom you purchased the product. You may also visit the Taidacent Store on Amazon for additional resources.