Ultrasonic Doppler Flowmeters Instruments Measure The Flow Of
The HAE-80FA Series ultrasonic doppler flowmeters measure the flow
of liquids that contain sound reflectors, suspended solids, or gas
bubbles larger than 100 microns. These sophisticated instruments
automatically adjust filtering and gain settings to produce
reliable readings in a wide range of liquid and reflector
The HAE-80FA flowmeter transmitts ultrasonic sound through the pipe
wall or from the probe tip into the flowing liquid by using
piezoelectric crystals contained in the transducer and probe tip.
The sound is then reflected by sonic reflectors suspended in the
liquid and recorded by the receiver.
If the sonic reflectors are moving within the sound transmission
path, sound waves will be reflected at a frequency shifted (Doppler
frequency) from the transmitted frequency. The difference between
the 2 frequencies is directly proportional to the speed of the
sonic reflectors, resulting in a liquid flow rate that is converted
to various user-defined units.
|Technical parameters||Standard S1||Standard M1||Standard L1||S1H||M1H||HS bracket||HM bracket|
|Applicable pipe (mm)||15~100||50~700||300~6000||15~100||50~700||15~100||50~700|
|Material||Aluminum alloy||PES (Polyether Sulfone)|
|Working frequency||1 MHZ|
|Installation method||V (N,W)||V,Z||Z method||V (N,W)||V,Z||V (N,W)||V,Z|
|Calibration||Pairing & Calibrating for the complete machine|
|Applicable temperature||-40~90 °C||-40ºC~160 °C|
|Media type||Water, seawater, sewage, alcohol, various oils and other single,
uniform and stable liquid that can transmit ultrasonic wave|
|Medium turbidity||<20000ppm with low bubble content|
|Applicable pipes||Uniform and compact pipes made of carbon steel, stainless steel,
cast iron, copper, PVC, aluminum, glass fiber reinforced plastics,
and lining is permitted.|
|Pipe lining material||Epoxy asphalt, rubber, mortar, polypropylene, polystyrene,
bakelite, polytetrafluoroethylene etc.|
|Signal cable||Standard configuration: 5mX2, and 10mX2 or 15mX2 are optional.|
Ultrasonic flow Principle of Operation:
The basic principle of operation employs the frequency shift of an
ultrasonic signal when it is reflected by suspended particles or
gas bubbles in motion. This metering technique utilizes the
physical phenomenon of a sound wave that changes frequency when it
is reflected by moving discontinuities in a flowing liquid.
Ultrasonic sound is transmitted into a pipe with flowing liquids,
and the discontinuities reflect the ultrasonic wave with a slightly
different frequency that is directly proportional to the rate of
flow of the liquid . Current technology requires that the liquid
contain at least 100 parts per million (PPM) of 100 micron or
larger suspended particles or bubbles.
Our HAE unique ultrasonic flow meter characteristcs:
1. Unique digital signal processing technology.
2. No mechanical transmission parts, not easy to damage,
maintenance free, long service life
3. More optimization circuit , high integration, low power
consumption, high reliability
4. Intelligent standard signal output, friendly man-machine
interface, a variety of secondary signal output, for you to choose.
How to choose the right ultrasonic flow meter?The key questions which need to be answered before selecting an
ultrasonic flow meter or doppler flow meter are:
1. Does the liquid have particulates of 100 ppm of 100 microns in
2. Do you require a handheld or continuous process monitor?
3. Do you require an analog output?
4. What is the minimum and maximum flow rate for the flow meter?
5. What is the minimum and maximum process temperature?
6. What is the minimum and maximum process pressure?
7. What is the size of the pipe?
8. Is the pipe always full?
Popular industry applications:
Ultrasonic flow meters are mostly used in oil and gas industries.
They are also used in chemical, pharmaceutical, food and beverage,
metal, mining, pulp and paper and wastewater industries.