ST502 Premium Clamp-On Ultrasonic Flow Meter

ST502 Premium Clamp-On Ultrasonic Flow Meter

The ST502 Premium is a professional-grade ultrasonic flow meter designed for accurate and reliable flow measurement in industrial, water treatment, HVAC, utility and aquaculture applications. Using non-invasive clamp-on transducers mounted externally on the pipe, the system measures flow without cutting the pipe, interrupting operations or modifying existing infrastructure.

Built around proven Transit-Time ultrasonic technology, the ST502 Premium delivers highly accurate flow data across a wide range of pipe sizes and operating conditions. The system is suitable for water, seawater, process water, oils and other compatible liquids, making it a versatile solution for engineers, operators and facility managers seeking dependable flow monitoring.

Unlike traditional inline flow meters, the ST502 Premium never comes into contact with the process fluid. This eliminates pressure loss, contamination risks and potential leakage points while significantly reducing installation time and cost.

The flexible clamp-on design allows the instrument to be relocated between measurement points whenever required. Whether used as a permanent monitoring solution or as a portable tool for troubleshooting, performance verification and process optimization, the ST502 Premium provides exceptional versatility throughout the facility.

Typical Applications

• Water treatment plants and distribution networks
• HVAC and building services systems
• Industrial process monitoring
• Aquaculture and RAS facilities
• Pump station performance verification
• Utility and infrastructure monitoring
• Flow surveys and temporary measurement campaigns
• Process optimization and troubleshooting

Key Benefits

• Non-invasive clamp-on installation
• No pipe cutting or process interruption required
• Easily relocated between measurement points
• High measurement accuracy
• Bidirectional flow measurement
• RS485 communication for PLC and SCADA integration
• IP68-rated transducers for demanding environments
• No pressure loss or contamination risk
• 4–20 mA, pulse and relay outputs
• Industrial-grade aluminum enclosure

Technical Specifications

• Measurement Principle: Transit-Time Ultrasonic
• Accuracy: ±0.5% of measured value
• Repeatability: 0.15%
• Pipe Size Range: DN25–DN5000
• Flow Velocity Range: Up to ±12 m/s
• Communication: RS485
• Outputs: 4–20 mA, pulse output and relay output
• Power Supply: 24 VDC
• Transmitter Protection: IP65
• Transducer Protection: IP68
• Transducer Temperature Rating: Up to +120°C

Professional Flow Monitoring Without Process Disruption

The ST502 Premium combines high accuracy, industrial reliability and installation flexibility in a single measurement platform. By eliminating the need for invasive installation work, the system enables rapid deployment while minimizing downtime and operational risk.

With support for large pipe diameters, advanced communication capabilities and robust IP68 transducers, the ST502 Premium is an ideal choice for organizations seeking dependable flow measurement, long-term process visibility and lower installation costs compared with conventional inline flow meters.