The product
An ultrasonic flow meter is an instrument that uses ultrasonic technology to measure the flow of liquids or gases. Its operation is based on the propagation characteristics of ultrasonic waves and fluid dynamics principles, calculating flow rate by measuring the time or frequency differences of signals transmitted through the fluid.
These meters typically consist of a transmitter and a receiver. The transmitter sends ultrasonic signals through the fluid, while the receiver captures them. Based on this interaction, the system accurately determines flow velocity and volumetric flow.
Working principle
When ultrasonic waves propagate through a liquid, the movement of the fluid causes slight variations in transmission time. This variation is directly proportional to the flow velocity.
At zero flow, the transmission time between sensors is identical. When flow is present, the transmission time against the flow direction is longer than in the flow direction, enabling accurate flow calculation.
Product features
- High accuracy: linearity better than 0.5% and repeatability better than 0.2%
- Measurement accuracy better than ±1%
- Non-invasive and easy installation
- Low power consumption
- Wide measurement range (DN15 to DN6000)
- Suitable for water, wastewater, rivers, industrial systems, and urban networks
- Interface available in multiple languages
- High reliability and long service life
- Strong resistance to electromagnetic interference
- Built-in memory for historical flow data (days, months, years)
- Automatic logging of faults and power failures
- Remote communication with multiple protocols (Modbus, M-Bus, etc.)
- Outputs: RS232/RS485, 4–20 mA, and pulse
Technical parameters
- Accuracy: ±1%
- Velocity range: 0 to ±10 m/s (bidirectional measurement)
- Pipe diameter: DN15 to DN6000
- Compatible fluids:
- Water, seawater, wastewater
- Acids and alkalis
- Alcohol, beer
- Various oils (any homogeneous liquid capable of transmitting ultrasonic waves)
- Pipe materials:
- Steel, stainless steel, cast iron
- Copper, PVC, aluminum
- FRP and others
Inputs and outputs
- Outputs:
- 4–20 mA
- Pulse
- Relay
- Inputs:
- 3 channels of 4–20 mA
- PT100 sensor (thermal measurement)
- Communication: RS485 with Modbus protocol
Power supply
- DC 8–36V
- AC 85–264V
Operating conditions
- Ambient temperature: -20°C to +60°C
- Sensor temperature: -40°C to +160°C
- Humidity: ≤80% RH
