CLAMP TYPE ULTRASONIC FLOW METER
Our clamp type ultrasonic flow meter provides accurate, non-invasive liquid flow measurement using advanced transit-time ultrasonic technology. It is designed for reliable performance across a wide range of industrial applications, without cutting the pipe or interrupting the process.
Overview
The CTUFV4 clamp type ultrasonic flow meter works on the transit-time principle, measuring flow velocity by comparing the travel time of ultrasonic signals moving with and against the flow inside a pipe. The system uses externally mounted ultrasonic transducers, allowing measurement through the pipe wall without direct contact with the liquid. This makes it a practical solution for installations where non-invasive measurement, minimal downtime is important.
Non-invasive measurement
No pipe cutting, no process interruption, and no contact with the fluid.
Wide application range
Suitable for many pipe materials, pipe sizes and liquid types across industrial systems.
Flexible signal options
Supports 4–20 mA, OCT pulse, relay output and MODBUS RS485 integration.
Principle of Operation
This flow meter uses the transit-time method. Two ultrasonic transducers are clamped to the outside of the pipe. One transducer sends an ultrasonic signal and the other receives it. The system measures the difference in travel time between signals moving downstream and upstream. Because the flowing liquid affects the travel time, the meter calculates flow velocity from this difference and converts it into an accurate flow measurement.
Basic Working Concept
- Two ultrasonic transducers are mounted externally on the pipe
- Signals are transmitted alternately in both directions
- Travel time differs with and against the flow
- The time difference is used to calculate liquid flow velocity
- No direct contact with the liquid is required
Key Features
- Transit-time ultrasonic measurement technology
- Clamp-on, non-invasive installation
- Suitable for metal and non-metal pipe materials
- Pipe diameter range: 25 mm to 6000 mm
- Wide flow range: ±1 l/min to ±20,000 l/min
- Accuracy: ±0.7% FSR
- LCD display with backlight
- 4–20 mA, OCT pulse and relay output options
- MODBUS RS485 support for general applications
- Compatible with temperature input for heat meter applications
General Specifications
- Flow range: ±1 l/min to ±20,000 l/min
- Accuracy: ±0.7% FSR
- Display: LCD with backlight
- Pipe diameter: 25 mm to 6000 mm
- Pipe materials: steel, stainless steel, cast iron, copper, cement, PVC, PE, PPE
- Cable: twisted-pair cable, over 1000 m
Electrical and Signal Specifications
- Power supply: 24 VDC
- Power consumption: less than 2 W
- Shock resistance: less than 5000 V
- Output signals: 4–20 mA, OCT pulse, 220 V NO/NC relay
- Input signals: MODBUS RS485, 4–20 mA input, Pt100 temperature transducer
Suitable Measuring Media
The CTUFV4 is suitable for a broad range of liquids, including:
- Water
- Hot water
- Chilled water
- Sea water with high salinity
- Waste water
- Liquid bitumen
- Acids
- Bases
- Oils
- Chemicals
- Beverages
Installation Guidance
For best measurement performance, the pipe should be completely full and the fluid should be relatively clean or contain low levels of bubbles or solids. Proper sensor alignment and spacing are important for accuracy. As a general recommendation, install one transducer with approximately 10D straight pipe upstream and 5D downstream, keeping sufficient distance from valves, bends and other pipe discontinuities. Where a liner is used, the liner specification should also be entered during setup.
Operating Conditions
- Fluid temperature: -40°C to 180°C
- Electronics box temperature: -20°C to 80°C
- Turbidity: less than 10,000 ppm
- Velocity range: 0 to ±10 m/s
- Humidity: 90%
Need More Information?
Contact us for product details, application guidance, installation support or a quotation for your project.