AUDIOWELL’s Full Range of Water Management Flow Monitoring Solutions

AUDIOWELL’s complete portfolio of flow monitoring products for water management includes several innovative devices: ultrasonic flow sensors, vortex flow sensors, clamp-on flow sensors, and lead-free flow transducers. Together, they provide the global water industry with an end-to-end flow measurement solution from source to point of use.

Ultrasonic Flow Sensor: High Accuracy Transit-Time Measurement with Direct Digital Output

AUDIOWELL’s ultrasonic flow sensor is a core metering device in water management systems, based on the ultrasonic transit-time difference measurement principle. Inside the measuring pipe section, a master-slave pair of ultrasonic flow sensors is installed. They measure, respectively, the propagation time of ultrasonic waves traveling downstream and upstream with the fluid – downstream, the sound wave travels faster and its propagation time is shorter; upstream, the opposite occurs. Using a high-precision algorithm, the time difference between the two directions is calculated, and based on the linear relationship between this time difference and the fluid velocity, the instantaneous flow rate is precisely determined.

The product integrates a circuit module that calculates and processes the transittime difference signals, and directly outputs digital information such as instantaneous flow rate, total flow, and water flow status via a serial port, without requiring an external complex transmitter or converter – greatly simplifying system integration. With no moving parts inside, the product eliminates failure points caused by mechanical friction and wear, offering low pressure loss, long service life, and high accuracy. It is widely used in home smart water management systems, smart irrigation systems, instant water heaters, and other applications. In addition, the product features micro-flow leak detection capability, able to detect minor leaks. Once an abnormal pipeline leak is detected, it can trigger an electric control valve to achieve intelligent shut-off, effectively helping to reduce non-revenue water.

Vortex Flow Sensor: Based on the Kármán Vortex Principle, High Stability Measurement in Large Flow Scenarios

AUDIOWELL’s vortex flow sensor measures flow based on the Kármán vortex principle in fluid mechanics. When fluid flows past a vortex shedder (a bluff body) installed in the measuring tube, regular alternating vortices are generated on both sides of the shedder, forming a Kármán vortex street. The frequency of vortex generation is proportional to the fluid velocity. The sensor detects the vortex frequency using a high-sensitivity piezoelectric element and calculates the flow rate using an intelligent algorithm. The measurement result is unaffected by changes in the medium’s temperature, pressure, or density, providing excellent stability.

In practical applications within the water treatment industry, vortex flow sensors are widely used in key processes such as raw water metering in inlet pipe networks, aeration flow monitoring in biological treatment units, and return/sludge discharge metering in sludge treatment lines. Their stable signal output can seamlessly interface with PLC or DCS systems, enabling fully automated process control and remote data transmission. AUDIOWELL’s vortex flow sensor is suitable for a variety of media including water, seawater, and chemical solutions, while also being compatible with applications such as water cooling systems and process water monitoring. It provides reliable and stable measurement assurance for users in large-flow, wide-turndown-ratio operating conditions.

Clamp-On Flow Sensor: Non-Contact, Non-Destructive Installation, Covering Both Rigid Metal Pipes and Flexible Plastic Tubes

AUDIOWELL’s clamp-on ultrasonic flow sensor is a non-contact fluid flow measurement device that is clamped onto the outside of a pipe. The device uses two ultrasonic sensors to continuously transmit ultrasonic waves toward the central area of the pipe section and receive reflected echoes, measuring the propagation time of the ultrasonic waves through the pipe to calculate the velocity and flow rate of the liquid inside the pipe. Its greatest advantage is that it achieves high-precision measurement by simply clamping onto the outside of the pipe, without any need to cut the pipe or interrupt the process flow, effectively solving long-standing industry pain points such as medium leakage, pressure loss, and cumbersome installation.

The product exhibits excellent pipe material compatibility, adapting to both rigid metal pipes and flexible plastic tubes. For metal pipes, it can be adapted to carbon steel, stainless steel, and various other metal pipes. For non-metal pipes, it is compatible with PVC, PPR, and other plastic pipes. In terms of fluid compatibility, the device accommodates a wide range of fluids including water, ethanol, and chemical solutions, covering applications from basic water management to fine chemical production. For fields with extremely high cleanliness requirements such as biopharmaceuticals, medical devices, and semiconductor manufacturing, because the sensors do not contact the liquid inside the tube, they cause no contamination – making the device particularly suitable for measuring ultra-pure media and chemically corrosive media. AUDIOWELL’s clamp-on flow sensor integrates the high-accuracy measurement technology of the transit-time method, uses a high-precision time measurement chip, offers a wide turndown ratio, and has high environmental adaptability, providing an efficient and safe solution for non-destructive monitoring of water networks and leak detection.

Lead-Free Flow Transducer: A Breakthrough in Eco-Friendly New Materials, a Green Choice for Global Environmental Compliance

Against the backdrop of increasingly stringent global environmental regulations, AUDIOWELL has launched a flow transducer based on new lead-free piezoelectric material technology. The core component of this product uses completely lead-free piezoelectric ceramic material, whose chemical composition complies with the strict limits on heavy metal content specified in the EU RoHS Directive and international drinking water safety standards. Traditional piezoelectric ceramic sensors are manufactured from lead-based materials, posing potential hazards to the environment and human health. In contrast, AUDIOWELL’s lead-free sensor – developed through the company’s long-term investment in piezoelectric ceramic technology – uses self-developed leadfree materials that meet the world’s most stringent environmental standards, making it possible to build a completely environmentally friendly ultrasonic flow measurement system.

AUDIOWELL’s lead-free flow transducer detects flow velocity using ultrasonic measurement technology to derive flow rate. The ultrasonic metering solution using this product requires no other moving parts, generates no vortices during measurement, does not disturb the flow velocity or direction of the fluid, and offers low pressure loss and more accurate results. The product is compact, with a probe diameter of 16.8 mm, matching the dimensions of conventional ultrasonic water meters. It can be widely used in smart water meters, smart irrigation systems, building water management systems, whole-house water purification systems, and other applications. In addition, AUDIOWELL has jointly developed a leadfree metering solution with ScioSense based on the AS6040 Ultrasonic Flow Converter (UFC) chip, optimizing the matching between the high-performance chip and the lead-free transducer to provide an easy-to-integrate complete solution for smart water meter systems. As the EU RoHS Directive tightens lead exemption clauses and imposes stricter lead limit requirements, AUDIOWELL’s lead-free flow transducer provides solid environmental compliance assurance for customers exporting products to global markets.

Multiple Technology Routes Working Together: AUDIOWELL Provides Comprehensive Flow Measurement Assurance for Smart Water Management

The application scenarios in the water treatment industry vary greatly – from clean tap water to wastewater containing impurities, from large-diameter municipal pipe networks to fine chemical process lines, from retrofit of existing pipelines requiring non-destructive installation to green product upgrades driven by environmental compliance. Flow measurement devices based on a single technology route cannot cover such diverse needs. With its multi-technology product matrix comprising ultrasonic flow sensors, vortex flow sensors, clamp-on flow sensors, and lead-free flow transducers, AUDIOWELL offers differentiated optimal solutions for different medium characteristics, installation conditions, accuracy requirements, and environmental standards:

Ultrasonic flow sensors are suitable for embedded water management systems that require high accuracy, low maintenance, and direct digital output;

Vortex flow sensors demonstrate excellent stability and reliability in large-flow, wide-turndown-ratio industrial water treatment scenarios;

Clamp-on flow sensors, with their non-contact, non-destructive installation, provide a convenient and safe measurement choice for retrofitting existing pipe networks and for applications sensitive to cleanliness;

Lead-free flow transducers address global environmental compliance needs, providing green technical support for terminal products such as smart water meters to be exported to markets including the European Union.