Product Introduction

The KH.DPL Doppler Flow Meter adopts the ultrasonic Doppler principle to measure flow velocity and combines ultrasonic time difference or static pressure methods for water level measurement. Flow is calculated based on the channel cross-sectional area. The Doppler effect determines flow velocity by analyzing the frequency difference between transmitted and received signals, while ultrasonic or pressure sensors ensure accurate water level detection. Built-in temperature compensation corrects ultrasonic propagation speed, delivering highly precise results.

Product Features

• Long Life & High Protection – IP68-rated waterproof and anti-corrosion probe, suitable for long-term underwater use.
• Easy Maintenance – Pure physical measurement method with no moving or consumable parts.
• High Accuracy – Flow velocity accuracy up to 1mm/s; water level accuracy within 1mm (2m range); unaffected by chemical reagents or viscosity.
• Bidirectional Flow Monitoring – Supports flow velocity monitoring in both directions.
• Versatile Measurement Methods – Integrates ultrasonic Doppler, time difference, and static pressure for reliable flow and level measurement.

Application Scenarios

The KH.DPL Doppler Flow Meter is ideal for rivers, open channels, reservoirs, and pipelines, and can monitor:
• Flow velocity
• Water level (ultrasonic or static pressure)
• Temperature
• Instantaneous flow
• Cumulative flow

Technical Parameters

• Flow Rate Range: 0 ~ 10m/s (bidirectional)
• Flow Rate Resolution: 0.001m/s
• Flow Rate Accuracy: 0.001m/s (≤5m/s); 0.02m/s or 0.3% of peak velocity (>5m/s)
• Ultrasonic Level Range: 6.5m
• Ultrasonic Level Accuracy: 0.001m
• Ultrasonic Level Resolution: 0.0005m
• Static Pressure Level Range: 0 ~ 10m
• Static Pressure Accuracy: ±0.1% FS
• Static Pressure Resolution: 0.001m
• Temperature Range: −20℃ ~ +60℃
• Sensor Size: 165 × 50 × 29.5mm
• Transmitter Size: 231 × 185 × 119mm
• Protection Grade: IP68
• Power Supply: DC 12V / 24V
• Power Consumption: <70mA (measuring), <25mA (sleep)
• Communication Interface: RS485, Modbus
• Lightning & Surge Protection: Supported
• EMI Suppression: Supported

Why Choose KH.DPL

The KH.DPL offers high-precision Doppler flow and water level measurement with IP68 protection and ultra-low power operation. It supports bidirectional flow monitoring, multi-parameter sensing, and strong anti-interference performance, making it a reliable choice for hydrology, irrigation, and environmental monitoring. Designed for long-term stability and easy integration, KH.DPL ensures accurate and consistent data collection in any field environment.