productbrief introduction

This product is a flow meter for measuring rainwater or sewage flow in sewers or pipelines that are not fully connected. It does not require the installation of pipe segment sensors like electromagnetic flow meters, nor does it require the use of interception devices, nor does it require the installation of fixed weirs to control water flow from fixed outlets. Non full pipe flow meter is a flow meter used to measure the velocity and flow rate of water in pipelines and culverts. Mainly applied in the following areas: monitoring of flood disasters, sewage discharge, natural rivers and streams, municipal water supply and drainage, monitoring of water loss/infiltration, monitoring of irrigation processes, research on estuaries and tides, fisheries/water conservancy, coastal erosion research, monitoring of underground canal processes, monitoring of road drainage, monitoring of river processes, and other environments.

measuring principle

The measurement principle of ultrasonic Doppler flowmeter is based on the Doppler effect in physics. According to the acoustic Doppler effect, when there is relative motion between the sound source and the observer, the frequency of the sound perceived by the observer will be different from the frequency emitted by the sound source. The frequency change caused by relative motion is directly proportional to the relative velocity between the two objects.

technical specifications

Test performance: Measurement types: flow rate, flow rate, water depth, water temperature Flow velocity measurement range: 0.05-5m/s Resolution: 0.03m/s Accuracy: ± 2-4% of the measured flow velocity Flow range 10L/s~99999999 m ³/h Error: 3%~6% Depth measurement range: 0.05-5m Resolution: 0.01m Accuracy: ± 2% Temperature measurement temperature range: 0 ℃~60 ℃ resolution: 0.5 ℃ Pipeline types: circular, square, rectangular, trapezoidal, elliptical Display Method: LCD (Liquid Crystal Display) The menu language can be switched between Chinese and English Signal output: Analog output 4-20mA (four wire system), maximum load 750W Switch output 2 sets of relays, with a capacity of AC230V/5A Digital interface RS485 (optional) Power supply: Power supply AC220V ± 10%, 50Hz (optional DC24V) Physical performance: Material transmitter: ABS; Sensor: Shell made of 316 stainless steel Process connection G1 pipe thread Installation method: bracket insertion type Cable length 10 meters (extendable) Environmental performance: Protection level transmitter: IP65; Sensor: IP68 Working temperature transmitter: -20~55 ℃; Sensor: 0-60 ℃ Environmental humidity: Relative humidity ≤ 85% Process pressure ≤ 0.6Mpa

Doppler flowmeter transmitter Doppler flowmeter sensor

Product Features

The Doppler method measurement principle reflects sensitivity, and the measurement is stable and reliable;

• Can simultaneously measure flow velocity, flow rate, water depth, and water temperature;

Intelligent module self diagnostic technology, error alarm display;

Long term stable and reliable use, easy maintenance;

LCD display, with a beautiful and exquisite appearance;

Multiple output forms: high current dual relay upper and lower limit alarm output; High precision 4-20mA output; RS485 digital communication output;

Adopting industrial grade chips to improve instrument reliability and measurement accuracy.

application area

Mainly used as equipment for measuring water flow in pipelines, channels, or rivers.

Flood disaster monitoring, sewage discharge, natural rivers and streams, municipal water supply and drainage, water loss/infiltration monitoring, irrigation process monitoring, road drainage monitoring, canal process research, river process monitoring, and culvert process monitoring.

Product manual:Ultrasonic Doppler Flow Meter Manual（ Online download)