The LUGB flange-clamp type vortex flowmeter is a commonly used structural form. Its body does not have connecting flanges itself. When connecting to the pipeline, the flowmeter is clamped between two special flanges and then tightened with bolts. Its characteristics include small size, simple and compact structure. It also provides special flanges and tightening bolts, so the installation cost is low, and installation is very convenient.

Product Advantages / PRODUCT ADVANTAGES

Simple installation, very convenient maintenance;
Simple and sturdy structure, no moving parts, very reliable long-term operation;
Wide rangeability, range ratio up to 1:15;
Small pressure loss, low operating cost, more energy-saving significance;
Wide application range, can measure liquid, gas, steam;
Long verification cycle, generally two years;
Within a certain Reynolds number range, the output signal is not affected by the physical properties and composition changes of the measured medium. The meter coefficient is only related to the shape and size of the vortex generator. After replacing parts, generally no need to recalibrate the meter coefficient;
Can display on-site, can also transmit remotely, and can also network with computer control systems;
The detection probe does not directly contact the measured medium, more stable performance.

Technical Parameters / TECHNICAL PARAMETERS

How to Select Products / HOW TO SELECT PRODUCTS

For the selection of vortex flowmeters, mainly confirm the following parameter requirements:

01. Measuring Medium

The vortex flowmeter is a velocity flowmeter that utilizes the principle of Karman vortex street. When the medium passes through the vortex generator, small vortices form behind it. By counting the number of vortices, the flow velocity of the medium can be calculated, and then converted into the flow rate of the medium. Its principle determines the types of measuring media, which can be liquid, gas, or steam. Currently, in most industrial applications, such as nitrogen, compressed air, steam, thermal oil, etc., vortex flowmeters are mostly used for measurement.

02. Pipe Diameter

According to different installation methods, vortex flowmeters can be divided into pipeline type and insertion type. For the pipeline type, the pipe diameter, like most other flowmeters, can be as small as DN15 and as large as DN300. If a larger diameter is needed, insertion type installation can be chosen. The conventional diameter range can reach up to DN2000, and diameters above DN2000 are supplied according to agreement.

03. Measuring Accuracy

The accuracy of vortex flowmeters also has several levels, and it is divided according to the measuring medium. For pipeline type vortex flowmeters, if measuring liquid, the accuracy can reach class 1.0; if measuring gas, the accuracy can reach class 1.5. For insertion type vortex flowmeters, the accuracy can reach class 1.5 and class 2.5.

04. Medium Temperature

Generally, it is divided into three ranges: normal temperature, medium temperature, and high temperature. The temperature ranges are -40～100℃ (normal temperature), 100～250℃ (medium temperature), 100～320℃ (high temperature). If the on-site medium temperature is higher, such as some superheated steam, orifice plate flowmeters can be used for measurement.

05. Nominal Pressure

It is mainly divided according to the installation method. The main market demands are as follows, for example, flange clamp type (2.5MPa), flange connection type (1.0/1.6/2.5MPa), insertion installation type (1.6MPa/2.5MPa/4.0MPa).

06. Power Supply

According to current market demands, mainly include +12VDC (three-wire pulse output), +24VDC (three-wire pulse output type and two-wire current output type), 3.6V lithium battery, dual power supply.

07. Output Signal

According to current market demands, mainly include voltage frequency pulse output, two-wire 4-20mA output, and HART output. In addition, some occasions may require digital output, and we can also provide Modbus RS485 communication.

Application Field / APPLICATION FIELD

Clamp-on vortex flowmeters are used in petroleum, chemical, metallurgical, mechanical, food, papermaking, as well as urban pipeline heating, water supply, gas and other industries for various low-viscosity liquid, gas, steam and other single-phase fluid process measurement and energy management.

One unit meets the flow measurement needs of various industries