Technical Specifications:

• Measurement Principle: Transit-time ultrasonic (difference method)
• Pipe Size Compatibility: 1 inch (DN25) nominal — indicated by “1G”
• Pipe Size Range: DN15 to DN300 (0.5 to 12 inch) depending on transducer model
• Pipe Material: Steel, stainless steel, cast iron, PVC, copper, and most other materials
• Fluid Type: Clean liquids, slurry (limited solids content)
• Flow Range: 0.01 to 12 m/s (adjustable per pipe size)
• Accuracy: ±1% of reading (at flow rate ≥0.3 m/s), ±0.5% with calibration
• Repeatability: ±0.2%
• Output Signals: 4–20 mA DC, pulse output, RS-485 (Modbus RTU)
• Power Supply: 100–240 V AC (50/60 Hz) or 24 V DC
• Display: 8-digit LCD with flow rate, totalizer, velocity, and signal strength bars
• Operating Temperature (Transducer): -30 to 160 °C (-22 to 320 °F)
• Operating Temperature (Electronics): -10 to 50 °C (14 to 122 °F)
• Protection Rating: IP67 (transducer), IP65 (electronics housing)
• Pipe Wall Thickness: 1.5 to 50 mm (0.06 to 2.0 in)
• Lining Thickness: Up to 10 mm (0.4 in) compatible
• Response Time: 1 second (typ.)
• Data Logging: Up to 2000 data points with timestamp
• Totalizer: Non-volatile memory, battery-backed (10-year battery life)

Functional Features:

• Non-Invasive Installation: No pipe cutting, no process interruption, no pressure drop
• Bi-directional Measurement: Measures flow in both directions automatically
• Empty Pipe Detection: Alarms when no liquid is present in the pipe
• Signal Quality Indicator: Real-time display of signal strength for installation optimization
• Velocity Measurement: Displays average fluid velocity in addition to volumetric flow
• Pipe Parameter Input: Internal database for 20 common pipe materials and sizes
• Totalizer: Accumulates total volume with automatic unit conversion

Performance Parameters:

• Ultrasonic Frequency: 1 MHz (standard for liquid applications)
• Transit-Time Resolution: 10 picoseconds
• Minimum Conductivity: 1 μS/cm (with Doppler option); not required for transit-time method
• Maximum Pressure: Up to 40 MPa (5800 psi) — limited by pipe, not meter
• Insulation Resistance: 100 MΩ minimum at 500 V DC
• Dielectric Strength: 1500 V AC for 1 minute
• Battery Life: 10 years (for totalizer memory backup)

Structural Features:

• Clamp-on transducer design with adjustable mounting bracket
• V-clip or chain-clamp mounting option for pipes 1–12 inch
• Transducer cable length: 5 m (standard), up to 30 m (option)
• Weatherproof electronics enclosure with DIN rail or wall mount
• Color LCD display with backlight for outdoor readability
• Keypad with 4 navigation buttons for local configuration

Working Principle:
The YFCT uses the transit-time difference method. Two ultrasonic transducers are mounted on the outside of the pipe at an angle. One transducer sends an ultrasonic pulse downstream, and the other sends a pulse upstream. The difference in transit time between the two pulses is directly proportional to the average fluid velocity. The meter calculates volumetric flow rate using the equation: Q = K × Δt × D², where K is a calibration constant, Δt is the transit-time difference, and D is the pipe inner diameter. The 4–20 mA output is linearly proportional to the flow rate.

Advantage Highlights:

• Zero Pipe Modification: No hot tapping, no welding, no process shutdown required for installation
• No Pressure Drop: Completely non-intrusive measurement
• Wide Pipe Compatibility: Works on steel, stainless steel, PVC, copper, and lined pipes
• High Accuracy: ±1% of reading without pipe-specific calibration
• Battery-Backed Totalizer: Retains totalized flow data even during power outages
• Signal Quality Indicator: Ensures optimal transducer placement during installation

Applicable Industries:

• Water and wastewater utilities
• Chemical processing
• Power plant cooling water
• HVAC chiller water systems
• Oil and gas (clean liquid lines)
• Food and beverage
• Pharmaceutical water systems (WFI, PW)
• Mining slurry transport (low solids)

Installation Requirements:

• Install on straight pipe section with minimum 10D upstream and 5D downstream (D = pipe diameter)
• Mount transducers at the 45° or V-method position as per manual
• Ensure pipe surface is clean, dry, and free of paint or heavy scaling at transducer location
• Apply coupling gel between transducer and pipe surface for acoustic contact
• Use the signal strength indicator during installation to optimize transducer position
• Avoid installing near pumps, valves, or pipe elbows (minimum 10D distance)

Usage Precautions:

• Do not install on pipes with heavy internal scaling or thick lining (>10 mm) without verification
• Ensure pipe is completely full of liquid for accurate measurement (no air pockets)
• Avoid installing on pipes with gas bubbles or high solids content (>5% by volume)
• Re-apply coupling gel if signal quality degrades over time
• Do not exceed maximum pipe wall thickness of 50 mm for standard transducers
• Calibrate with known flow rate (e.g., volumetric tank) for highest accuracy (±0.5%)