CERTEON TM02/TM03 Hall Water Flow Sensor Instruction Manual

1. Introduction

The CERTEON TM02 / TM03 Hall Effect Water Flow Sensor is a compact liquid flow measurement device designed for precise low-flow monitoring in various applications, including water purification systems, coffee machines, laboratory equipment, and small-scale fluid control systems.

This sensor utilizes a Hall effect detection principle to convert flow rate into a pulse frequency output, enabling accurate real-time monitoring and seamless integration with control circuits or microcontrollers. Its transparent housing design allows for visual inspection of internal rotor operation, which simplifies maintenance and troubleshooting.

Key Features:

• Precise Measurement: Delivers accurate liquid measurements with excellent pressure resistance up to 0.8 MPa.
• Durable Construction: Made from POM material, resistant to corrosion and capable of operating in temperatures up to 80℃.
• Waterproof Chip: Ensures reliable performance even in moist environments.
• Compact Size: Ideal for installations with limited space.
• Versatile Installation: Can be installed in both horizontal and vertical orientations.

2. Specifications

The following table details the technical specifications for the TM02 and TM03 Hall Water Flow Sensors:

Note: Manual measurement may result in a 1–2 cm error. The actual product color may vary slightly due to differences in monitor displays.

3. Setup

3.1 Preparation

• Ensure the power supply voltage matches the rated DC 3.5-24V range.
• Inspect the sensor body for visible damage before installation.
• Install a filter at the inlet to prevent debris from entering the sensor chamber.

3.2 Installation

• The sensor may be installed in either horizontal or vertical orientation.
• Ensure correct flow direction according to the arrow marking on the sensor body.
• Secure all quick-connect fittings to prevent leakage.

4. Electrical Connection

• Red wire: Connects to positive power supply (IN).
• Blue wire: Connects to ground (GND).
• Yellow wire: Signal output (OUT) connects to the controller or data acquisition system input terminal.
• Verify that the load current does not exceed the specified limit.

5. Operation

5.1 Data Reading

• The sensor outputs pulse signals directly proportional to the flow rate.
• To calculate the real-time flow rate (Q), use the corresponding frequency formula based on your sensor model (refer to Section 2. Specifications).
• Flow rate Q is typically calculated by dividing the measured frequency (Hz) by the specified coefficient for your model type.

6. Precautions

• Use clean, non-corrosive liquids only.
• Do not exceed the maximum pressure of 0.8 MPa.
• Operating temperature must remain between 0 and 80°C.
• Avoid strong mechanical impact or vibration.
• Ensure correct wiring polarity before powering on.
• If used in potable water systems, verify compliance with local sanitary regulations.

General Warnings:

• This product operates with electrical voltage. Incorrect wiring may cause electric shock or equipment damage.
• Do not use with flammable or explosive liquids.
• Installation must be performed by qualified personnel when integrated into commercial systems.
• Keep out of reach of children.
• Proper disposal: Follow WEEE directives for electronic waste.

7. Storage and Maintenance

7.1 Storage

• Store in a dry and ventilated environment away from direct sunlight.
• Avoid freezing conditions during storage.

7.2 Cleaning

• Periodically inspect the inlet filter and clean if necessary.
• If scale or debris accumulates inside, flush with clean water only.
• Do not use aggressive chemical cleaners that may damage POM material.

8. User Tips

• The compact size of the sensor makes it ideal for installations with limited space, ensuring stable flow without interference.
• Its waterproof chip provides reliable operation even when exposed to internal moisture.
• The sensor is designed to handle a range of temperatures effectively, making it suitable for diverse applications.
• Wiring is straightforward and intuitive, simplifying the installation process.
• The built-in Hall sensor consistently delivers stable and accurate signal output across varying flow rates and temperatures.

9. Troubleshooting

If you encounter issues with your Hall Water Flow Sensor, consider the following:

• No Flow Reading: Check the power supply, ensure all wiring connections are secure, and verify there are no blockages in the flow path. Confirm that the liquid is flowing in the correct direction as indicated by the sensor's arrow.
• Inaccurate Readings: Ensure the sensor is installed correctly (horizontal or vertical) and that the liquid is clean and free of debris. Verify that the operating flow rate and pressure are within the specified ranges. Air bubbles in the system can also affect accuracy.
• No Output Signal: Double-check all electrical connections: Red to positive, Blue to ground, and Yellow to the signal input of your controller. Ensure the load current does not exceed the sensor's specified limit.

10. Support

For technical assistance, product inquiries, or any other support needs, please contact CERTEON customer support. You may also refer to the official user manual PDF for additional details.

Official User Manual (PDF): A detailed user manual is available in PDF format for download here.

Manufacturer Overview:

The following video provides an overview of Chikong Automation, the manufacturer behind this product, showcasing their facilities and commitment to industrial automation.