Jiangsu Hengchuan specializes in producing spiral vortex flowmeters

Jiangsu Hengchuan specializes in producing spiral vortex flowmetersMain features of the product

It is a new type of gas flow meter developed and researched by our company with advanced technology.

The intelligent vortex flowmeter has the following characteristics:

★ 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 settings are 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 a microcomputer for a transmission distance of up to 1.2Km;

★ In conjunction with our FM type data collector, remote data transmission can be achieved through the internet or 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.

Jiangsu Hengchuan specializes in producing spiral vortex flowmetersmain purpose

Widely used in industries such as petroleum, chemical, power, metallurgy, and urban gas supply to measure various gas flow rates, it is currently the product of oil field and urban natural gas transmission and distribution measurement and trade measurement.

Environmental conditions for use

Environmental temperature: -30 ℃~+55 ℃

Relative humidity: 5% to 95%

Atmospheric pressure: 86KPa~106KPa

working conditions

Medium temperature range: -20 ℃ to+70 ℃

Nominal pressure: 1.6, 2.5, 4.0, 6.3 MPa

Product Composition

The vortex flowmeter consists of two parts: a sensor and a converter.

Flange connection size table

Working principle and structural characteristics

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, shaped and converted into a pulse signal proportional to the flow rate by a preamplifier, and then sent to the microprocessor for integration processing along with temperature, pressure and other detection signals. After that, the measurement results (instantaneous flow rate, cumulative flow rate, temperature, pressure data) are displayed on the LCD screen.

Jiangsu Hengchuan specializes in producing spiral vortex flowmetersFlow 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.

execution standard

The flowmeter shall comply with JJG 198-94 "Verification Regulations for Velocity Flowmeters".

Jiangsu Hengchuan specializes in producing spiral vortex flowmetersMain technical parameters

*Explanation: A and B are used to distinguish between different flow ranges with the same diameter.

◆ Explosion proof mark

The flowmeter is of explosion-proof type, with explosion-proof markings of Exd IIBT4 and Exd IICT4~T6 (excluding acetylene).

◆ Wiring port

The outlet interface is M20 * 1.5 internal thread.

Jiangsu Hengchuan specializes in producing spiral vortex flowmetersProduct Selection