TDF Acoustic Doppler Flowmeter

Operating Principle

The Doppler Flowmeter uses the acoustic Doppler principle to measure flow velocity. It simultaneously measures liquid level using both ultrasonic and hydrostatic pressure methods, and applies data fusion to improve the accuracy and stability of level measurement. Flow rate is calculated based on the velocity–area method.

Product Application

● Rivers and lakes
● Urban sewage
● Industrial wastewater discharge monitoring
● Agricultural irrigation and drainage systems

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产品描述
Product Features
Performance Index
Field Application

- Ultrasonic Doppler measurement technology for precise determination of characteristic flow velocity.
- Equipped with an advanced DSP processor and intelligent algorithms, automatically identifying water flow field conditions to adapt to various water environments.
- Supports bidirectional flow velocity measurement, providing accurate readings regardless of sensor installation orientation (upstream or downstream).
- Integrated pressure and ultrasonic level sensors allow direct water depth measurement.
- Provides a single isolated RS485 digital interface, supporting the standard Modbus RTU protocol.
- Supports 4G wireless network with Alink protocol.
- Programmable relay outputs, allowing any relay to be configured as high alarm, low alarm, or timer-based.
- Automatic historical data storage, capable of storing and retrieving up to 10 years of historical measurements.

Parameters	Details
Flow Velocity Range	-6 m/s ~ 6 m/s
Flow Velocity Accuracy	±(Measured Value × 1% + 0.01) m/s
Flow Velocity Resolution	0.001 m/s
Ultrasonic Liquid Level Range	35 mm ~ 152 cm
Ultrasonic Liquid Level Accuracy	0.5% of reading or 3.2 mm, whichever is greater
Ultrasonic Liquid Level Resolution	0.25 mm
Pressure Liquid Level Range	0 ~ 10 m
Pressure Liquid Level Accuracy	±0.5% FS
Pressure Liquid Level Resolution	0.8 mm
Operating Temperature	0 ~ 60 ℃
Sensor Dimensions	190 × 45 × 33 mm
Power Supply	• AC: 85–265 VAC, 50/60 Hz • DC: 24 V

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WhatsApp:+86 133 3109 8301

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Nongda South Road, Haidian District, Beijing

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Tengine Innovation (Beijing) Instruments Inc.

Email: contact@tengine.com.cn

WhatsApp: +86 133 3109 8301

Address: Floor 6, Building 8, Yard 1,

Nongda South Road, Haidian District, Beijing