20mA Pressure Vortex Flowmeter High Measurement Accuracy

High Measurement Accuracy High Reliability 20mA Vortex Flowmeter

Vortex flowmeter is based on the Carmen vortex principle research and production, mainly for industrial pipeline fluid flow measurement, such as gas, liquid, steam and other media. Its characteristics are small pressure loss, a large range, high accuracy, in measuring the volume flow of working conditions almost independent of fluid density, pressure, temperature, viscosity and other parameters. No movable mechanical parts, so high reliability and low maintenance. Instrument parameters can be stable over time. Vortex flow meter adopts piezoelectric stress sensor, which is highly reliable and can work in the operating temperature range of -20℃～+250℃. It has analog standard signal and digital pulse signal output, so it is easy to be used with digital system such as computer, which is an advanced and ideal measuring instrument.

Vortex Flowmeter Working Principle

Vortex flowmeter is designed in the flow field of the vortex generator, detection probe and the corresponding electronic circuitry and other components. When the fluid flows through the vortex generator, it forms two alternating rows of vortices on both sides, this vortex is known as Carmen vortex street. Strohal, based on the theory of Carmen vortex street, proposed that the frequency of Carmen vortex street is proportional to the fluid flow velocity, and gave the relationship between frequency and flow velocity: f = St × V / d

f: vortex frequency (Hz)

v: the average flow velocity on both sides of the vortex generator (m/s )

St: Strohal coefficient (constant)

These alternating vortices form a series of alternating negative pressure, which acts on the detection probe and generates a series of alternating electrical signals, which are converted, shaped and amplified by the preamplifier, and then output a pulse frequency signal or standard signal proportional to the vortex synchronization.

Vortex Flowmeter Technical Parameters

Vortex Flowmeter Design Feature

1. Easy to install simple structure, no moving wear parts.

2. High measurement accuracy, high reliability, no need for on-site debugging.

3. Can transmit the flow signal from a long distance, and can be networked with computer to realize centralized management.

4. The amplifier board adopts unique design and is common for gas and liquid.

5. There are analog standard signal and digital pulse signal output, which can be easily used with digital systems such as computers.

6. Explosion-proof instruments can be used in corresponding explosion-proof places.

7. Customized design and production according to customer requirements.

Company Introduction

Xi'an Dehou Electronic Technology Co., Ltd. is a high-tech enterprise specializing in research and development, production, sales of industrial automation instruments and providing Internet of Things solutions.

At present, the company has obtained more than 100 patents and more than 20 soft patents. It has passed IS09001 quality management, IS014001 environmental management, IS045001 Occupational Health and safety management, Occupational Health and Safety Management, GBT29490 Intellectual Property Management, military standard, information security and other system certification and EU CE certification, Russian EAC certification, ATEX explosion-proof certification and SIL certification and other qualifications.

The company is committed to the system integration of process measurement, control, management and other aspects of the system and the development, development, production, sales and service of intelligent instruments and instruments of the Internet of Things.At present, it has metering level FM radar level, pulse radar level, radio frequency guide level, liquid level of magnetover, magnetoexpansion level, sound fork density (level), pressure, flow, multi-point thermometer, analysis, system and tank area meter.The products are widely used in petrochemical industry, coal chemical industry, metallurgy, electric power, building materials, food and medicine and environmental protection water treatment and other industries.

The company can provide customers with location, pressure, temperature, flow, measurement requirements of analytical instruments and cooperation of the Internet of T scheme.