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technical article
Wide application of vortex flowmeter
2012-2-13 10:36:40

Product overview of intelligent integrated vortex flowmeter:

,是根据卡门(Karman)涡街原理测量气体、蒸汽或液体的体积流量、标况的体积流量或质量流量的体积流量计。 Intelligent integrated vortex flowmeter is a volume flowmeter that measures the volume flow of gas, steam or liquid, standard volume flow or mass flow according to the Karman vortex principle. And can be used as flow change

The transmitter is used in vortex flowmeters in automatic control systems. Can be widely used in large, medium and small pipelines for water supply and drainage, industrial circulation, sewage treatment, oil and chemical reagents, compressed air, saturated and superheated steam, natural

Gas and various media flow measurement.

Intelligent integrated vortex flowmeter main features:

No moving parts, long-term stability, simple structure, easy to install and maintain

Adopt anti-disturbance circuit and anti-vibration sensor head, with certain anti-vibration performance

Using ultra-low power single-chip microcomputer technology, one 3.2V10AH lithium battery can be used for more than 5 years

Non-linear correction of instrument coefficients by software to improve measurement accuracy

Low pressure loss and wide measuring range

Use EEPROM to protect the accumulated flow from power failure, the protection time is more than 10 years

,是根据卡门(Karman)涡街原理测量气体、蒸汽或液体的体积流量、标况的体积流量或质量流量的体积流量计。 Intelligent integrated vortex flowmeter is a volume flowmeter that measures the volume flow of gas, steam or liquid, standard volume flow or mass flow according to the Karman vortex principle. And can be transmitted as traffic

The device is used in vortex flowmeters in automatic control systems.

The instrument adopts advanced differential technology, and cooperates with isolation, shielding, filtering and other measures to overcome the problems of poor seismic resistance and small signal data disorder of similar products. It also adopts unique sensor packaging technology and protective measures to ensure

Increased product reliability. There are two types of products: basic type and composite type. The basic type measures a single flow signal; the composite type can simultaneously measure temperature, pressure and flow. Each type has a whole and split structure to suit

Different installation environments.

Second, the instrument features and uses

Features:

No moving parts, long-term stability, simple structure, easy to install and maintain

Adopt anti-disturbance circuit and anti-vibration sensor head, with certain anti-vibration performance

Using ultra-low power single-chip microcomputer technology, one 3.2V10AH lithium battery can be used for more than 5 years

Non-linear correction of instrument coefficients by software to improve measurement accuracy

Low pressure loss and wide measuring range

Use EEPROM to protect the accumulated flow from power failure, the protection time is more than 10 years

use:

This instrument can be widely used in large, medium and small pipeline water supply and drainage, industrial circulation, sewage treatment, oil and chemical reagents, compressed air, saturated and superheated steam, natural gas and various media flow measurement.

的应用: Application of integrated vortex flowmeter :


YRD-HLUG series integrated vortex flowmeter with temperature and pressure compensation is mainly used to measure the flow of medium fluid in industrial pipelines, such as gas, liquid, vapor and other media. Its characteristics are small pressure loss, large measuring range and high accuracy.

It is almost independent of parameters such as fluid density, pressure, temperature and viscosity when measuring working volume flow. No moving mechanical parts, so high reliability and low maintenance. Intelligent flash alarm instrument parameters can be stable for a long time. This instrument

The meter uses a piezoelectric stress sensor with high reliability and can work in the operating temperature range of -20 ° C to + 250 ° C. There are analog standard signals and digital pulse signal output, which is easy to use with digital systems such as computers.

More advanced and ideal traffic


It can be seen from the above formula that the pulse frequency signal output by VSF is not affected by the fluid physical properties and composition changes, that is, the meter coefficient is only related to the shape and size of the vortex generator and the pipeline within a certain Reynolds number range. But as a stream

The meter needs to detect the mass flow in the material balance and energy measurement. At this time, the output signal of the flow meter should monitor the volume flow and fluid density at the same time. The fluid physical properties and components of the bimetal thermometer have a direct impact on the flow measurement.


便是依据卡门旋涡原理进行封闭管道流体流量测量的新型流量计。 Vortex flowmeter is a new type of flowmeter for measuring fluid flow in closed pipes based on the Carmen vortex principle. Because of its good media adaptability, it can directly measure steam, air, gas,

Water and liquid working volume flow, equipped with temperature and pressure sensors can measure standard volume flow and mass flow. It is an ideal substitute for throttling flow meters.


In order to improve the high temperature resistance and vibration resistance of the vortex flowmeter, our company has recently developed a TLS-HLUG improved vortex flow sensor paperless recorder. Due to its unique structure and selection of materials, the sensor can be used at high temperatures.

(350 ℃), strong vibration (≤1g) under severe conditions.


In practical applications, the maximum flow rate is often much lower than the upper limit value of the meter. As the load changes, the minimum flow rate is often lower than the lower limit value of the meter. The meter is not working in its optimal working section. Ask

Problem, usually reduce the diameter at the measurement to increase the flow rate at the measurement, and choose a smaller diameter instrument to facilitate the measurement of the instrument, but this method of reduction must have a straight pipe section between the reducer and the instrument with a length of 15D or more get on

Rectification makes processing and installation inconvenient. The LGZ variable diameter rectifier developed by our company has a circular arc profile, which has multiple functions of rectifying, increasing the flow velocity and changing the flow velocity distribution. Its small structure size is only for the inner diameter of the process tube.

1/3 is integrated with the vortex flowmeter, which not only does not need to add another straight pipe section, but also reduces the requirements for the straight pipe section of the process pipe, which is very convenient to install.


For the convenience of use, the battery-powered local display type vortex flowmeter adopts micro power consumption high-tech. It can be operated continuously for more than one year by using lithium battery power, which saves the procurement and installation costs of cables and display instruments, and can be displayed locally.

Instantaneous flow, cumulative flow, etc. The intelligent isolator temperature compensation integrated vortex flowmeter also has a temperature sensor, which can directly measure the temperature of the saturated steam and calculate the pressure, thereby displaying the mass flow of the saturated steam. temperature

The pressure compensation integrated type has temperature and pressure sensors. For gas flow measurement, the temperature and pressure of the gas medium can be directly measured to display the standard volume flow of the gas.

Measurement medium: gas, liquid, vapour


Flange connection caliber selection 100, 150, 200