Intelligent Gas Precession Vortex
Flowmeter Overview Intelligent gas precession vortex flowmeter is a new
type of gas flow meter which developed by our company with advanced
technology. It has the function of measuring flow, temperature, and
pressure; it also can compensate temperature, pressure and
compressible factor automatically. It is an ideal instrument of gas
measurement which is used for petroleum, chemical industrial,
electricity, metallurgy, and so on.
Features 1. Has no mechanical moving parts, difficult to be
corroded, steady and reliable, with long operating life, can work
for a long time without special maintenance; 2. Adopts *6 bits computer chip, with high
integration level, small volume, excellent property, and great
function of complete instrument; 3. Intelligent flowmeter integrates flow probe,
microprocessor, pressure and temperature sensor, selects in-built
combination for more compact structure, can measure fluids flow,
pressure and temperature directly, and realizes real-time tracking
and compensation, as well as correcting compressible
factor; 4. Adopts double detecting technique to improve the
strength of detection signal effectively and suppress the
interference from pipelines vibration; 5. Adopts national leading vibration-proof
technique, which can suppress interference signal caused by
vibration and pressure fluctuation; 6. Adopts English dot matrix display which displays
more digitals, read intuitively and conveniently, can display
parameters directly such as volume flow rate under working state
and standard state, volume dose, mediem pressure , temperature, and
so on; 7. Adopts EEPROM technique, parameters can be set
conveniently and preserved permanently, the time of preserving
history date can reach up to one year; 8. Converter can output frequency pulse, 4~*0mA
analog signal, and has RS**5 interface, it can build a network with
microcomputer directly, the transmission distance can reach
1.2km; 9. Outputs warning with various physical parameters,
users can choose any one from them; *0. Flowmeter head can rotate **0 degree, can be
installed and used easily and conveniently; *1. Coordinates with our companys FM date
acquisition unit, can transmit remote date through internet or
telephone network; *2. Pressure and temperature signals are input by
sensor, with high interchangeability; *3. Overall power dissipation is low, can be powered
by internal battery or external power source; *4. With multiple materials that can measure special
gas, such as red copper for chlorine. Operating Principle Flow transmitters profile is similar to venturis
molded line (see in picture). Place a group of spiral guide vanes
in the inlet side, when fluid enter in the flow transmitter; the
guide vanes force the fluidcausing drastic spiral flow. When the
fluid enters in the diffuse part, the spiral flow starts second
rotating and forms gyro-type vortex propulsion phenomenon because
of flow-back effect.The precession frequency
is proportional to the flow volume, and it isnt affected by fluids
physical property and density. Detecting element can get good
linearity in quite side flow range after measuring the second
vortex procession frequency of the fluid. Signal is magnified,
filtered, shaped by amplifier, then it is converted to pulse signal
which is proportional to the flow rate. Then the pulse signal is
sent to microprocessor for flow totalizing, and the LCD will
display the measured result (instantaneous flow, cumulative flow,
and temperature and pressure data).
