Key Features of the SFC High-Temperature Ultrasonic Flow Meter

High Accuracy: ±0.3% accuracy
Wide Temperature & Pressure Range: -90°C to 600°C, up to 12 MPa
Broad Liquid Compatibility: Conductive and non-conductive liquids
Virtually No Pressure Loss
Intelligent Diagnostics & Multi-Protocol Communication
Easy Maintenance: Online maintenance and hot-swappable components

Widely Used in Multiple Industries

Reliable flow meter measurement solutions for a wide range of industrial applications

Smelting

Petrochemical Industry

New energy

Water Management

Mining

Pharmaceutical & Food

SFC Ultrasonic Flow Meter Data Sheet

Applicable Media	Conductive & Non-Conductive Liquids: Water, wastewater, seawater, acids, alkalis, alcohols, oils, molten salts and heat-transfer oils. Fluids with Bubbles or Particles: Turbidity ≤10,000 ppm. High-Temperature & High-Pressure Media: Nuclear power feedwater and solar molten salt, with temperatures up to 600°C.
Applicable Operating Conditions	Diameter Range: DN25–DN2400; custom sizes available. Temperature Range: -40°C to 120°C (standard); 120–250°C (high-temperature); 250–600°C (ultra-high-temperature, split-type). Pressure Rating: PN10–PN40; butt-welded models up to 42 MPa. Flow Velocity: 0.2–10 m/s, bidirectional measurement. Protection Rating: IP66/IP67/IP68; underwater installation up to 2 m. Explosion Protection: Ex ia/dB IIC T4–T6 for chemical and oil & gas applications.
Considerations for Model Selection	Pipeline Material: Steel or stainless steel preferred; avoid fiber-reinforced pipes. Straight Pipe Requirements: Bilayer: upstream ≥10D, downstream ≥5D; multi-channel: upstream ≥5D, downstream ≥2D. Special Requirements: Specify high-temperature, high-pressure, and explosion-proof needs when ordering.
Main engine	Accuracy Class	Up to Level 0.5
	Signal output	Route 1: 4–20 mA current output, impedance 0–1 kΩ, accuracy 0.1%;Route 1 OCT pulse outpu
	Data interface	The RS485 serial interface is isolated, allowing the flow meter to be upgraded via a PC. Supports protocols such as MODBUS
Special cable	Custom-made twisted-pair cable/coaxial cable: under normal circumstances, the maximum length is limited to 30 meters; RS485 communication is selected, enabling a transmission distance of over 100 meters.
Pipeline condition	Tubing	Carbon steel and stainless steel; other materials can be customized.
	Bore	50~1000mm
	Directly managed section	The sensor installation point should preferably be located: 10D upstream, 2D downstream, and 20D from the pump outlet (where D denotes pipe diameter
Measurement medium	Kind	Molten salts, heat-transfer oil, bitumen, etc
	Temperature	Temperature:0~600℃
	Turbidity	10,000 ppm with low bubble content
	Flow Velocity Range	0.2~10m/s
Work environment	Temperature	Unit: -40 to 60 °C; Flow sensor: -40 to 120 °C, When the temperature falls below-20 °C, the display unit may fail to operate normally.
Work environment	Humidity	Host: 85% RH; Flow sensor: capable of operating when immersed in water, with water depth ≤ 2 m (Note: after the sensor has been filled with adhesive)
Source	100-240VAC ,24VDC
Power dissipation	50VA/5W

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Working Principle of the SFC Ultrasonic Flow Meter

The SF ultrasonic flow meter measures liquid flow in closed pipelines using the transit-time method. It calculates flow velocity and flow rate by measuring the difference between ultrasonic travel times in the upstream and downstream directions.