Spiral vortex flowmeter
Spiral vortex flowmeter adopts the latest microprocessing technology, which has the advantages of strong functionality, wide flow range, simple operation and maintenance, and easy installation and use. Its main technical indicators have reached the advanced level of similar foreign products. Widely used in various gas metering industries such as petroleum, chemical, power, metallurgy, and coal.
working principle
The flow profile of a flow sensor is similar to the profile of a Venturi tube. Place a set of spiral guide vanes on the inlet side, which force the fluid to generate intense vortex flow when it enters the flow sensor. When the fluid enters the diffusion section, the vortex flow is subjected to backflow and begins to undergo secondary rotation, forming a gyroscopic vortex precession phenomenon. The precession frequency is directly proportional to the flow rate and is not affected by the physical properties and density of the fluid. By measuring the secondary rotation precession frequency of the fluid with the detection element, good linearity can be obtained over a wide range of flow rates. The signal is amplified, filtered, and shaped by a preamplifier into a pulse signal proportional to the flow rate, and then sent to the microprocessor for integration processing along with temperature, pressure, and other detection signals. Finally, the measurement results (instantaneous flow rate, cumulative flow rate, temperature, pressure data) are displayed on the LCD screen.
Flow meter structure
The spiral vortex flowmeter has a compact structure and is mainly composed of a housing, a vortex generator, sensors (temperature, pressure, flow rate), a rectifier, a bracket, and a converter.
Conditions for use of spiral vortex gas flowmeter
Environmental temperature:- 30ºC~+55ºC
Relative humidity: 5%~95%
Medium temperature:- 30ºC~+80ºC
Atmospheric pressure: 86kPa~106kPa
main features
1. Built in pressure, temperature, and flow sensors with high safety performance, compact structure, and beautiful appearance.
2. Display temperature, pressure, instantaneous flow rate, and cumulative flow rate on site.
3. By adopting a new type of signal processing amplifier and unique filtering technology, the interference signals generated by pressure fluctuations and pipeline vibrations are effectively eliminated, greatly improving the anti-interference ability of the flowmeter and ensuring excellent stability for small flow rates.
4. The unique functions of time display and real-time data storage ensure that internal data will not be lost in any situation and can be permanently saved.
5. The whole machine has extremely low power consumption and can operate for a long time with internal battery power supply, making it an ideal on-site display instrument without the need for external power supply.
6. The anti-theft function is reliable, with password protection to prevent parameter changes.
7. The header can rotate 180 degrees freely, making installation convenient. ★ No mechanical movable parts, corrosion-resistant, stable and reliable, long service life, long-term operation without special maintenance;
★ Using 16 bit computer chips, high integration, small size, good performance, and strong overall functionality;
The intelligent flowmeter integrates a flow probe, microprocessor, pressure, and temperature sensors, and adopts a built-in combination to make the structure more compact. It can directly measure the flow rate, pressure, and temperature of the fluid, and automatically track compensation and compression factor correction in real time;
The use of dual detection technology can effectively improve the strength of detection signals and suppress interference caused by pipeline vibration;
★ Adopting a Chinese character dot matrix display screen with multiple digits for intuitive and convenient reading. It can directly display the volumetric flow rate under working conditions, volumetric flow rate under standard conditions, total amount, as well as parameters such as medium pressure and temperature;
★ Adopting EEPROM technology, parameter setting is convenient, it can be permanently saved, and up to one year of historical data can be saved;
The converter can output frequency pulses, 4-20mA analog signals, and has RS485 interface and HART protocol. It can be directly connected to a microcomputer for a transmission distance of up to 1.2Km;
★ With FM type data collector, remote data transmission can be carried out through the Internet or telephone network;
Pressure and temperature signals are input to the transmitter, with strong interchangeability;
★ The whole machine has low power consumption and can be powered by internal batteries or external power sources.
Product Features
No mechanical rotating parts, not easily corroded, high reliability, no maintenance required for long-term operation
Only a shorter straight pipe section is needed, and it may not even be necessary
Adopting the most advanced microprocessor technology, the instrument integration and reliability are higher, and the calculation is more accurate
The whole machine has extremely low power consumption and can operate for a long time with internal battery power supply, making it an ideal on-site display instrument without the need for external power supply
Parameter settings can be made through the built-in four buttons, and the operation is simple
Using EEPROM technology, the instrument coefficients can be stored for a long time even in the event of power failure
The signal output can be pulse signal, 4-20mA current signal, and RS485 data communication, making it convenient for users to choose
Equipped with password protection function
Performance characteristics
1. No mechanical movable parts, corrosion-resistant, stable and reliable, long service life, long-term operation without special maintenance;
2. Using 16 bit computer chips, high integration, small size, good performance, and strong overall functionality;
3. The intelligent flowmeter integrates a flow probe, microprocessor, pressure, and temperature sensors, and adopts a built-in combination to make the structure more compact. It can directly measure the flow rate, pressure, and temperature of the fluid, and automatically track compensation and compression factor correction in real time
4. Adopting dual detection technology can effectively improve the strength of detection signals and suppress interference caused by pipeline vibration;
5. Adopting domestically leading intelligent seismic technology, effectively suppressing interference signals caused by vibration and pressure fluctuations;
6. Adopting a Chinese character dot matrix display screen with a large number of digits, the reading is intuitive and convenient. It can directly display the volume flow rate under working conditions, the volume flow rate and total amount under standard conditions, as well as parameters such as medium pressure and temperature;
7. Adopting EEPROM technology, parameter settings are convenient and can be permanently saved, and historical data up to one year can also be saved;
8. The converter can output frequency pulses, 4-20mA analog signals, and has an RS485 interface, which can be directly connected to a microcomputer for a transmission distance of up to 1.2km;
9. With the FM type data collector, remote data transmission can be carried out through the Internet or telephone network;
10 pressure and temperature signals are input to the transmitter, with strong interchangeability;
11. The whole machine has low power consumption and can be powered by internal batteries or external power sources.
2. Main application: Spiral vortex flowmeter can be widely used in industries such as petroleum, chemical, power, metallurgy, and urban gas supply to measure various gas flow rates. It is currently the preferred product for natural gas transmission and distribution measurement and trade measurement in oil fields and cities.
3. Environmental conditions and temperature:- 30ºC~+55ºC
Relative humidity: 5% to 95%
Atmospheric pressure: 86KPa~106KPa
4. Working conditions: Medium temperature range:- 20ºC~+70ºC
Nominal pressure: 1.6, 2.5, 4.0, 6.3 MPa
Audited Supplier 
Spiral vortex flowmeter adopts the latest microprocessing technology, which has the advantages of strong functionality, wide flow range, simple operation and maintenance, and easy installation and use. Its main technical indicators have reached the advanced level of similar foreign products. Widely used in various gas metering industries such as petroleum, chemical, power, metallurgy, and coal.
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