LUX all stainless steel precession vortex flowmeter

Project Overview

1. Product Overview

The all-stainless steel precession vortex flowmeter adopts advanced microprocessing technology and has the advantages of strong function, wide flow range, simple operation and maintenance, and convenient installation and use. Main technical indicators A new gas flow meter that has reached the advanced level of similar foreign products.

2. Product Principle

The flow profile of the flow sensor is similar to the shape of a Venturi tube (see Figure 1 below). A set of spiral guide vanes is placed on the inlet side. When the fluid enters the flow sensor, the guide vanes force the fluid to produce a violent vortex flow. When the fluid enters the diffusion section, the vortex flow is affected by the backflow and begins to rotate twice, forming a gyroscopic vortex precession phenomenon. This precession frequency is proportional to the flow rate and is not affected by the physical properties and density of the fluid. The detection element can obtain good linearity within a wide flow range by measuring the secondary rotational precession frequency of the fluid. 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 together with detection signals such as temperature and pressure for integration processing, and the measurement results are displayed on the LCD screen. (Instantaneous flow, accumulated flow and temperature, pressure data).

3. Product features

1. Built-in pressure, temperature and flow sensors, high safety performance, compact structure and beautiful appearance.

2. Display temperature, pressure, instantaneous flow and cumulative flow locally.

3. The use of new signal processing amplifiers and unique filtering technology effectively eliminates interference signals caused by pressure fluctuations and pipeline vibrations, greatly improving the anti-interference ability of the flow meter and enabling excellent performance for small flow rates. stability.

4. The unique time display and real-time data storage functions ensure that internal data will not be lost no matter what the situation.

5. The power consumption of the whole machine is extremely low, and it can run on long-term power supply from the internal battery. It is an ideal local display instrument without external power supply.

6. The anti-theft function is reliable and has password protection to prevent parameter changes.

5. Installation precautions

1. The sensor can be installed vertically, horizontally or at any tilt according to the flow direction mark. ;

2. When the pipeline is long or close to the vibration source, supports should be installed upstream and downstream of the flow meter to eliminate the influence of pipeline vibration;

3. Sensor The installation location should have enough space to facilitate the inspection and maintenance of the flow meter, and should meet the environmental requirements of the flow meter;

4. Interference from strong external magnetic fields should be avoided;

5. When installed and used outdoors, there should be a cover to avoid exposure to the sun and rain erosion, which will affect the service life of the instrument;

6. When testing pipeline pressure, pay attention to the pressure configured on the intelligent flow meter. The pressure measurement range of the sensor should be adjusted to prevent overpressure from damaging the pressure sensor.

6. Internal structure of the product

The flow meter consists of a sensor and a conversion display.

1. The sensor includes a vortex generator, detection element, rectifier and housing.

The vortex generator consists of specific spiral blades, which are fixed at the front end of the contraction section of the casing, forcing the fluid to generate a strong vortex flow.

2. Conversion display instrument

After amplification, filtering and shaping, the weak voltage signal detected by the piezoelectric sensor is turned into a pulse signal with a frequency proportional to the flow rate, and then Display meter count display. The display is equipped with an external output interface to output various signals. The measured gas medium can be compensated for temperature and pressure, converted into volume flow under standard conditions, and displayed.