Our Ultrasonic Flow Sensors

Precision, Reliability, and Customization for Every Application.

TGU series Low-flow Ultrasonic Flow Sensor / Flow Meter

The TGU Series Low-flow Ultrasonic Flow Sensor / Flow Meter feature a U-shaped measuring channel design that allows for seamless integration with various types of tubing, including PVC, silicone, PE, and PUR, through NPT-barb adapters.

The TGU Series Low-flow Ultrasonic Flow Sensor / Flow Meter is specifically designed to measure ultra-low flow rates with accuracy up to ±0.1 mL/min. It is commonly used in fields such as medical devices, biopharmaceuticals, industrial automation and scientific research.

Product Features

High Precision

Engineered for exceptional precision and long-term stability, ensuring reliable performance in demanding environments.

High Resolution

Achieves an outstanding resolution of up to ±0.1mL/min, perfect for highly sensitive micro-flow monitoring.

Bi-Directional Flow Measurement

Bidirectional measurement, capable of calculating fluid volume, and featuring bubble detection function

Compact Design

Features built-in signal processing circuitry, eliminating the need for external boards and saving valuable space.

Media Independent

Delivers consistent, reliable measurement results regardless of fluid color, transparency, or electrical conductivity.

Seamless Integration

Offers standard output protocols, ensuring quick, effortless, and seamless integration into your existing systems.

Technical Parameter


Measurement Principle	Ultrasonic time-of-flight method
Measurable Liquids	Water or similar liquids
Fluid Connection	NPT female thread
Wetted Materials	Flow channel: PEEK, Seal: Viton
Sensor Housing	Aluminum alloy
Calibration	Manufacturer default calibration: 22℃±3℃ (water)
Liquid Temperature	0℃ – 90℃
Ambient Temperature	0℃ – 60℃
Storage Temperature	-20℃ – 70℃
Operating Humidity	10% – 90% RH (non-condensing)
Operating Pressure	0 – 1 MPa (consult factory for higher pressure)
Protection Level	IP65
Installation	Thread mounting
Cable ground	Shielding
Operating Voltage	18-30VDC
Current Consumption	Current Consumption
Electrical Connection	8-pin push-pull connector

Product Specifications

Product Model	Flow Range (Low Flow)	Flow Range (High Flow)	Measurement Accuracy	Repeatability
TGU012NS	0-10mL/min	10-1000mL/min	±0.1mL/min, ±1% RD	±0.1% F.S.
TGU016NS	0-20mL/min	20-2000mL/min	±0.2mL/min, ±1% RD	±0.1% F.S.
TGU024NS	0-50mL/min	50-3000mL/min	±0.5mL/min, ±1% RD	±0.1% F.S.

Case in Bioprocess

TFF Systems

With the rapid expansion of the biopharmaceutical industry, the manufacturing processes for high-value biologics—such as recombinant proteins, monoclonal antibodies (mAbs), and vaccines—have reached unprecedented levels of precision. In downstream processing, Tangential Flow Filtration (TFF), also known as Cross-Flow Filtration (CFF), has established itself as an indispensable core technology.

Let's Discuss Your Measurement Needs

Tell us about your application, and our engineering team will get back to you within 24 hours.