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1. Working principle
The flow profile of the flow sensor is similar to the profile of a venturi. A set of spiral guide vanes are placed on the inlet side. When the fluid enters the flow sensor, the guide vanes force the fluid to produce a violent vortex. When the fluid enters the diffusion section, the vortex flow is affected by the backflow and starts to make a second rotation, forming a gyroscopic vortex precession phenomenon. The precession frequency is proportional to the flow of water, and is not affected by the physical properties and density of the fluid. The second rotation precession frequency of the fluid measured by the detection element can obtain good linearity in a wide flow range. The signal is amplified, filtered and shaped by the preamplifier and converted into a pulse signal proportional to the flow rate, and then sent to the microprocessor for integration processing together with the temperature, pressure and other detection signals, and the measurement result is displayed on the LCD screen. (Instantaneous flow, cumulative flow, temperature and pressure data).
Flowmeter structure
The precession vortex flowmeter has a compact structure, which is mainly composed of a shell, a vortex generator, sensors (temperature, pressure, flow), rectifiers, brackets and converters.
Precession vortex gas flow meter operating conditions
Environmental temperature: -30ºC~+55ºC
Relative temperature: 5%~95%
Medium temperature: -30ºC~+80ºC
Atmospheric pressure: 86kPa~106kPa
main feature:
1. Built-in pressure, temperature and flow sensors, high safety performance, compact structure and beautiful appearance.
2. Local display of temperature, pressure, instantaneous flow and cumulative flow.
3. Adopt signal processing amplifier and filtering technology to effectively eliminate the interference signal generated by pressure fluctuation and pipeline vibration, greatly improve the anti-interference ability of the flowmeter, and make the small flow stable.
4. With the function of time display and real-time data storage, no matter what the situation, it can ensure that the internal data will not be lost and can be stored for a long time.
5. The power consumption of the whole machine is extremely low, and it can run for a long time with the internal battery.
6. The anti-theft function is reliable, with password protection to prevent parameter changes.
7. The meter head can be rotated 180 degrees at will, easy to install.
2. Main features
1. Built-in pressure, temperature and flow sensors, high safety performance, compact structure and beautiful appearance.
2. Local display of temperature, pressure, instantaneous flow and cumulative flow.
3. Using signal processing amplifier and filtering technology, effectively eliminate the interference signal generated by pressure fluctuation and pipeline vibration, improve the anti-interference ability of the flowmeter, and make the small flow stable.
4. Unique time display and real-time data storage function, no matter what the situation, it can ensure that the internal data will not be lost and can be stored for a long time.
5. The power consumption of the whole machine is extremely low, and it can be operated for a long time with the internal battery. It is an ideal on-site display instrument without external power supply.
6. The anti-theft function is reliable, with password protection to prevent parameter changes.
7. The meter head can be rotated 180 degrees at will, easy to install. ★ No mechanical moving parts, corrosion resistance, stability and reliability, long life, long-term operation without special maintenance;
★ Using 16-bit computer chips, high integration, small size, good performance, and strong functions of the whole machine;
★ The intelligent flowmeter integrates flow probe, microprocessor, pressure and temperature sensor, and adopts a built-in combination to make the structure more compact. It can directly measure the flow, 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 the detection signal and suppress the interference caused by pipeline vibration;
★ Adopting Chinese character dot matrix display, with many display digits, intuitive and convenient reading, it can directly display the volume flow under working condition, volume flow under standard condition, total quantity, and parameters such as medium pressure and temperature;
★ Using EEPROM technology, parameter setting is convenient, can be saved, and can save up to one year of historical data;
★ The converter can output frequency pulses, 4-20mA analog signals, and has RS485 interface and HART protocol. It can be directly connected to the computer and the transmission distance can reach 1.2Km;
★ With the company's FM data collector, remote data transmission can be carried out via the Internet or telephone network;
★ The pressure and temperature signals are input by the transmitter, which is highly interchangeable;
★ The whole machine has low power consumption and can be powered by an internal battery or an external power supply.
LUX precession vortex flowmeter product features
1) No mechanical rotating parts, not easy to corrode, high reliability, no maintenance required for long-time work
2) Only a short straight pipe section is needed or even not needed
3) Adopt advanced microprocessor technology to make the instrument integration and reliability higher, and calculation more accurate
4) The power consumption of the whole machine is extremely low, and it can be operated for a long time with the internal battery. It is an ideal on-site display instrument without external power supply
5) Relevant parameter settings can be carried out through the built-in four buttons, and the operation is simple
6) Using EEPROM technology, the meter coefficients can be stored for a long time even in the case of power failure
7) The signal output can be pulse signal, 4-20mA current signal and RS485 data communication, which is convenient for users to choose
8) With password protection
What are the raw materials used?
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