NST860G Ultrasonic Doppler Flow Meter

NegotiableUpdate on 10/03

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

NST860G Ultrasonic Doppler Flow Meter Measurement Principle of Ultrasonic Doppler Flow Meter: The measurement of ultrasonic Doppler flow meter is based on the Doppler effect. The probe emits a beam of ultrasonic waves obliquely upward (or forward), and the ultrasonic waves propagate in the fluid. The fluid will contain impurities such as bubbles or particles (which can be considered as having the same velocity as the water flow). When the ultrasonic waves come into contact with impurities in the fluid, the reflected ultrasonic waves will produce a Doppler frequency shift Δ f, which is proportional to the flow velocity. The flow velocity of a fluid can be measured by measuring the Doppler frequency shift Δ f

Product Details

Performance characteristics of ultrasonic Doppler flowmeter

Wide input voltage: 10VDC~30VDC

• Small size: The spontaneous self collection method greatly shortens the structural size and allows for low water level measurement

• Wide applicability: 2 selectable elevation angles for a wider range of applications on site

Two depth measurement methods are available: pressure based depth measurement and backup ultrasonic depth measurement

• Signal strength indication: can distinguish on-site siltation, low water, hanging materials and other situations

• Instantaneous flow calculation function: can calculate several channel types such as circular, rectangular, trapezoidal, and irregular channels

• High protection level: IP68

• High resolution: Flow velocity resolution of 1mm/s

• Easy installation

Applicable fields

·Flood disaster monitoring, sewage discharge, and natural rivers and streams

·Municipal water supply and drainage, water loss/infiltration monitoring, irrigation process monitoring

·Research on estuaries and tides, fisheries/water conservancy, and coastal erosion

·Monitoring of Underdrain Processes, Monitoring of Road Drainage, and Research on Canal Processes

·River flow monitoring

Technical parameters of ultrasonic Doppler flowmeter

power supply	Power supply range:10VDC～30VDC； Working current:≤55mA； Whole machine power consumption:0.62W± 0.1W (12V power supply);0.83W ± 0.1W (24V power supply);
output characteristic	RS485/ModBus standard protocol
Measurement performance	Flow rate range: 0.03m/s～5m/s，-5m/s～-0.03m/s（可定制±0.03m/s～±10m/s）； Standard type: This model is an external level gauge, and the type and range of the level gauge are freely selected by the customer; EnhancedpressureDepth range:0.02-3m, 0.02-10m (please confirm the maximum water depth before placing an order); Enhanced ultrasonic depth measurement range:0.08～3m (default pressure depth measurement); Flow velocity accuracy:±（V*%1+0.01)m/s（Hydrological Verification Center VerificationAccuracy); Flow velocity accuracy:±1%～± 3% (measurement accuracy may vary due to the influence of the on-site working environment); Depth accuracy:±3cm； Flow velocity resolution:1mm/s； Temperature resolution:0.01℃； Enhanced water depth resolution:1mm（3m range）The3mm (10m range).
物理性能	current meterMaterial:POM+(ABS+PC)；Cable material:PU； Quality:2.5kg (including 20m wire); Protection level:IP68； Cable:foundationType is4-core shielded cable, wire diameter 4.5mm; enhanced 4-core shielded cable；Including air duct cable, wire diameter8mm (default wire length is 10 meters, other wire lengths need to be customized).
working environment	Operating Temperature-5～60 ℃ (non frozen state); Storage temperature:-25～80℃； Sand content:20mg/L～20g/L； PH value:The pH value is between 6 and10between.