LUDC series vortex flowmeter manufacturer from China Ningbo Dongchi Control Technology Co. Ltd.

Place of Origin:

Zhejiang, China (Mainland)


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Product Detail

LUDC series vortex flowmeter is designed in the flow field of the vortex, the detection probe and the corresponding electronic circuit.

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Use and characteristics:

LUDC series vortex flow transmitter, mainly used for the flow measurementof industrial pipeline fluid medium, such as gas, liquid, steam and other media. Its characteristic is the small pressure loss, large measuring range,high accuracy, influence of the measuring condition of volume flow rate is almost not affected by fluid density, pressure, temperature, viscosity and other parameters. No moving mechanical parts, so high reliability, small amount of maintenance. Instrument constant long-term stability. Insert type meter installed in the pipeline into the mouth, ball valve can continuouslyflow handling. In order to run in the dirt in the medium of regular cleaningand repair, the instrument using piezoelectric stress sensors, high reliability, can be in -20 ℃ to 300 ℃ temperature range of work. A standard analog signal, there is also a digital pulse signal output, easy andsupporting the use of computers and other digital system, is a more advanced, the ideal flow meter.

Products: nbdcck.com

1, the introduction of LUDC

LUDC series vortex flowmeter is designed in the flow field of the vortex, the detection probe and the corresponding electronic circuit. When the fluidflows through the bluff body, the sides forming two rows of vortex changes alternately, this vortex is known as the Carmen vortex. Castro Hal based onCarmen vortex theory also proposed Carmen vortex frequency and fluidflow rate is proportional to, and gives the relation between frequency andvelocity type:

F=St * V/d type: F vortex street frequency (Hz)

The average velocity of the vortex generating body on both sides of the V(m/s) St, Harrower coefficient (constant) these alternating vortices formed a series of alternating negative pressure, the pressure in the detection of the probe, then formed a series of alternating electrical signals, thepreamplifier conversion, shaping, amplification, pulse frequency signal output and vortex synchronous proportional to (or signal).

2, the characteristics of the LUDC product

1) no movable components, long-term stability, simple structure and convenient installation and maintenance

2) sensor output pulse frequency, the frequency and the actual flowmeasured fluid is linear, zero drift free, very stable performance, structuralforms, and a pipeline type, inserted type flow sensor

3) high accuracy, measurement accuracy is ± 1% usually liquid gas;measurement accuracy is ± 1.5%

4) measurement of wide measuring range, at a Reynolds number of 2 × 104 ~ 7 × 106 range, up to 1:20

5) the pressure loss is small (about orifice plate flowmeter 1/4 ~ 1/2), which belongs to the energy saving flow meter

6) flexible installation, according to the process of the pipeline does not pass, can be horizontal, vertical and inclined angle installation

7) the disturbance elimination circuit and anti vibration sensing head, has a certain anti vibration performance

8) using ultra low power single chip microcomputer technology, 1 3V10AH lithium batteries can be used more than 5 years

9) the instrument coefficient nonlinear correction by software, improve the measurement accuracy

10) using EPROM on flow accumulation of power down protection,protection for more than 10 years

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3, LUDC measurement range and working pressure

Meter diameter

(mm) liquid measuring range