product description

intelligent Vortex flowmeter

A Described

LUGB Series of intelligent vortex flowmeter is The flow of steam, gas, and low-viscosity liquids is measured by the theory of the generation of vortices and the relationship between vortices and vortices based on the theory of Carmen and Strohal, and piezoelectric crystals are used as sensors. When the fluid flows through the vortex generators, The two sides of the formation of two rows of alternating separation of the vortex, the alternating separation of the vortex to produce a series of alternating negative pressure, the role of the piezoelectric crystal, it produces alternating electrical signals.This signal is proportional to the flow rate, the microprocessor acquisition , The operation can be obtained fluid flow.

The instrument uses advanced differential technology, with isolation, shielding, filtering and other measures to overcome the similar products, poor seismic, small signal data disorders and other issues, and the use of a unique sensor packaging technology and protective measures to ensure product reliability . Temperature and pressure compensation instrument according to the site medium temperature, pressure correction of the actual flow data, flow measurement more accurate, more scientific measurement.

Instrument has a simple structure, easy installation, no mechanical wear, pressure loss is small, low maintenance costs and other significant features.The new form of body design, Measure the body use 1Cr18Ni9Ti Material made of all cast, its high temperature corrosion resistance characteristics, especially suitable for high-temperature steam and special liquid, gas medium measurement.

Second, the working principle

Vortex Flowmeter Yes by Vortex generator, detection probe and the corresponding electronic circuit, etc. When the fluid flows through the vortex body, it formed on both sides of the alternating two rows of vortices, this vortex is called the Karman vortex street. Is proportional to the flow rate of the fluid.

F = St × V / d

Wherein:

f Vortex frequency of occurrence (Hz)

V Average flow velocity on both sides of the vortex generators (M / s)

St Strohal's coefficient (constant)

Fig 1Vortex flowmeter schematic diagram

These alternating vortex to form a series of alternating negative pressure, the pressure on the detection probe, it produces a series of alternating electrical signals, through the pre-amplifier conversion, shaping, amplification, the output and vortex synchronization Proportional to the pulse frequency signal (or standard signal).

Instrument features and uses

n No moving parts, long-term stability, simple structure for easy installation and maintenance

n Using anti-interference circuit and anti-vibration sensor head, with a certain anti-environmental vibration performance

n Using ultra-low power single-chip microcomputer technology, 1 3.6V10AH lithium battery can be used for more than 5 years

n By software on the instrument coefficient nonlinear correction, improve the measurement accuracy

n Pressure loss is small, wide range

n use EEPROM on the cumulative flow of power-down protection, protection time is greater than 10 years

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

Technical parameters

V. instrument selection

example 1: use a flange-mounted battery-powered vortex flowmeter measurement of steam, pipeline DN25, on-site display of traffic.

Its product model should be: LUGB-2302ZB

Example 2: Select a flange explosion-proof vortex flowmeter to measure the steam pipe DN50, the scene needs to show the flow and Far EasTone 4-20mA Current signal, the product model should be: LUGB-1305ZCE

Six. Selection reference

1. General liquid and gas flow range

Note: The table of the liquid using the flow range of the test conditions are room temperature water (t=20Lt; 0 & Ρ = 1000kg / m3). The test conditions for gas measurement range are ambient air and normal pressure (t = 20Lt; 0 & P = 101.325 kPa, ρ = 1.205 kg / m3)

Seven . Shape and size

Instrumentation dimensions

8. Selection And ordering information

Ordering Please specify model, measuring medium, medium temperature, medium pressure, flow range, body material and other parameters,

As far as possible to choose card-mounted, easy installation, low prices, short lead times.

Before ordering, please fully communicate with the technical staff to ensure the use of accurate measurement process.

Series of products

contact us

Address: No.36-6, Fengxiang North Road, Beitang District, Wuxi
Tel: 0510-85886598 82328671
Sales QQ: 2905045712
Technology QQ: 1870947388
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Changzhou Branch Tel: 0519-88197617
Fax: 0510-85886598 82328671
Technical Services: 13961787023
E-mail: 13961787023@163.com
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