LUGB Clamp Connected Vortex Flowmeter from China Manufacturer

Introduction Features Specifications Model Selection Application Installation

Introduction

The clamp vortex flowmeter is a new flowmeter developed on the basis of Karman vortex principle. Because it has the advantages that other flowmeters cannot have, it has been rapidly developed since the 1970s, and according to relevant data, it has been widely used in various fields. Will dominate in the future flow meters, is the ideal replacement for orifice flow meters.

Vortex flow sensors are suitable for measuring the mass flow and volume flow of superheated steam, saturated steam, compressed air and general gases, water and liquids.

LUGB clamp vortex flowmeter is a new design concept, the temperature, pressure, flow signals in one, through the intelligent digital processor will be mixed processing three signals output a compensated standard flow, so as to achieve the gas, steam temperature and pressure compensation function.

Features

High accuracy, liquid measurement accuracy of ±1.0%; Gas measurement accuracy is ±1.5%;

The pressure loss is small, about 1/4 of the orifice flowmeter, which belongs to the energy-saving flow meter;

Flexible installation, horizontal, vertical and different Angle tilt installation;

It adopts disturbance elimination circuit and anti-vibration sensing head, which has certain anti-environmental vibration performance.

At the same time, the temperature and pressure compensation function is integrated in the body, which can measure the standard volume flow rate or the standard mass flow rate of the fluid.

Fully intelligent and digital circuit design, which can automatically compensate the density of the measured flow body or the volume calculation of the standard condition;

Battery-powered type can work continuously for more than two years without external power supply;

New dot matrix Chinese character LCD display, more convenient operation;

New digital filtering and correction capabilities make flow measurement more accurate and reliable;

010

No moving parts, long instrument life;

Specifications

Performance	Technical parameter
Measuring medium	steam, compressed air, liquid (single phase media)
Medium temperature	-40℃～+350℃
Medium pressure	1.6、2.5、4.0Mpa
Range ratio	1：8～1-30(air at reference scale) 1：8～1：40(Refer to normal temperature water)
Measuring range	liquid 0.4 ~ 0.7m/s gas 4.0 ~ 60m/s steam 5.0 ~ 70m/s
Specification	DN25～DN300mm
Material	304, 316L a variety of materials
Reynolds number	Normal 2104Cd～7106
Drag coefficient	Cd≤2.6
Vibration acceleration	LUGB type≤0.2g
Class of protection	IP65
Explosion-proof class	（ia) II CT6
Accuracy	1.0 level、1.5 level
Environmental condition	Ambient temperature	-40℃～+55℃(non-explosion-proof place) -20℃～+55℃(explosion-proof place)
	Relative humidity	≤85%
	Atmospheric pressure	86～106Kpa
Power supply	Non-explosion-proof type	Pulse mode	+12VDC 20mA
		Current mode	+24VDC 20mA
Output signal	Frequency pulse signal 2 ~ 3000Hz Low level ≤1V High level ≥6V
	Two-wire 4-20mA signal (isolated output) load ≤500Ω

Model Selection

Measuring medium: Turbine flowmeter is a speed flowmeter, its principle determines its measuring medium type, can be liquid, can also be gas or steam. At present, the vast majority of industrial occasions, such as nitrogen, compressed air, steam, heat conduction oil, etc., mostly use flange connected vortex flowmeter to measure;

Pipe diameter: Flange connected vortex flowmeter can be divided into pipe type and insert type installation according to the different installation methods. For the pipeline type, the pipe diameter is the same as most other flowmeters, the small is DN15, and the large is able to reach DN300. If you need a larger caliber, you can choose to insert the installation, the conventional caliber range can reach DN2000, DN2000 caliber above supply in accordance with the agreement;

Measurement accuracy: The accuracy of the flange connected vortex flowmeter also has several grades, and it is divided according to the measurement medium. If it is to measure liquid, the measurement accuracy can reach 1.0, and if it is to measure gas, the accuracy can reach 1.5. If it is inserted vortex flowmeter, the accuracy can reach level 1.5 and 2.5;

Medium temperature: Generally speaking, it is divided into three ranges, which are divided into normal temperature, medium and high temperature. The temperature range is -40 ~ 100℃(normal temperature), 100 ~ 250℃(medium temperature), 100 ~ 320℃(high temperature). If the field medium temperature is higher, such as some superheated steam, you can use the orifice flowmeter to measure;

Nominal pressure: mainly divided according to the installation method, the main demand on the market is as follows: for example, flange clamp type (2.5MPa), flange connection type (1.0/1.6/2.5MPa), plug-in installation type (1.6MPa/2.5MPa/4.0MPa);

Power supply: According to the current market demand, the main +12VDC(three-wire pulse output), +24VDC(three-wire pulse output type and two-wire current output type)3.6V lithium battery, dual power supply;

Output signal: According to the current market demand, the main voltage frequency pulse output, two-wire system 4-20mA output and HART output. In addition, some occasions may require digital output, we can also provide modbus RS485 communication.

Application

Industrial process

Energy measurement

Environmental protection engineering

Transportation

Biotechnology

Scientific experiment

Marine meteorology

Rivers and lakes

Installation

1、When using a vortex flowmeter to measure steam, the surface body and pipeline must be insulated, the flange must be clamped tight, and there must be no air leakage, otherwise the instrument is easy to damage;

2、It is better to install the instrument indoors, away from vibration and strong electromagnetic interference. If outdoors, the watch head can be protected;

3、There should be 10-15 times the straight pipe section before the instrument, and more than 5 times the straight pipe section after the instrument. Select the installation place to facilitate installation, wiring and debugging;

4、There is a straight pipe section, before installation, weld the two flanges, and then install the instrument tightly, cut the pipe straight pipe of equal length, and then install the whole table welded before. Never weld the watch on the flange.

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