Handheld Ultrasonic Doppler Flowmeter (Cable Measurement)

It is a new hydrological technology and equipment used by the Environmental Monitoring Center for flow velocity measurements, by the Hydrological Bureau for comparative flow velocity tests, cross-stream flow velocity measurements, bridge-mounted suspended-flow velocity measurements, and routine surveys.

Classification:

LSH10-1A Handheld Ultrasonic Doppler Flow Meter (Cable Measurement)

Keyword:

多普勒流量计

便携式多普勒流量计

超声波多普勒流速流量仪

手持式流速仪

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Product details

Instrument Overview

The handheld ultrasonic Doppler flowmeter is a hydrological new-generation instrument that employs the ultrasonic Doppler frequency-shift method and continuous-wave measurement. It features built-in standard flow-measurement modes and flow-duration recording capabilities, conforming to the "Specifications for River Flow Measurement." This instrument is ideal for applications such as flow velocity measurements conducted by environmental monitoring centers, comparative flow velocity tests performed by hydrological bureaus, flow velocity surveys in涉water areas, bridge-mounted flow velocity measurements, and routine patrol inspections.

Product Features

(1) Hydrological new technology equipment required for national defense construction and for surveying and emergency monitoring technologies.

(2) Technical products listed in the Catalog of New Hydrological Observation and Forecasting Equipment for Promotion

(3) Comply with the “Specifications for River Flow Measurement” to ensure the accuracy and reliability of hydrological surveys.

(4) It can perform single measurements or automatic continuous measurements; data can be automatically stored or manually recorded.

Technical Parameters

Flow rate frequency	5MHz
Flow rate range	0.02–7.00 m/s
Flow rate accuracy	1.0% ± 1 cm/s
Flow rate resolution	1mm/s
Water level range	10m pressure-type
Water level accuracy	±0.5%FS
Water level resolution	1mm
Water temperature range	-5℃~40℃
Water temperature accuracy	±0.5℃
Water temperature resolution	0.01℃
Flow range	0.001 m³/s – 99,999,999 m³/h
Flow accuracy	±2% to ±3% (depending on the cross-section)
Depth of immersion	20-meter water area
Measurement mode	Automatic and manual
Measurement interval	Automatic mode: Select a value from 0 to 120 minutes, with a minimum increment or decrement interval of 5 minutes. Manual mode: Allows single or repeated consecutive measurements with arbitrary intervals.
Speed measurement duration	Automatic mode: 60 seconds and 100 seconds. Manual mode: 10–120 seconds, with adjustable increment or decrement options.
Working power	Built-in lithium battery DC 12V ±10%
Output interface	RS232 by default, other customizations available
Protection level	Probe IP68, handheld host IP65
Water flow direction identification	The flow velocity probe automatically identifies the direction of water flow and can rotate freely within an azimuth range of 0–360 degrees. When the flow velocity exceeds 0.5 m/s (or 1 m/s), a lead fish device can be suspended from it.
Flow velocity probe	Probe dimensions: 390mm × 140mm × 140mm Probe material: 316 stainless steel Cable length: 20m
Measurement method	Cable-suspended measurement and rod-based measurement
Measurement parameters	Water level, flow velocity, water temperature, instantaneous flow rate, and cumulative flow rate