Accurate flow measurement is essential to the safe, efficient, and economical operation of modern industrial facilities. Steam systems, compressed-air networks, process-gas pipelines, water-treatment installations, petrochemical plants, food-processing lines, pharmaceutical utilities, and municipal energy systems all depend on dependable instrumentation. When flow data is inaccurate or unavailable, energy consumption rises, production decisions become less reliable, and maintenance teams may be unable to identify developing process problems.
The XG-LUGB series intelligent vortex flowmeter is designed for these demanding measurement tasks. Based on the Karman vortex principle, it measures the flow of liquids, gases, saturated steam, and superheated steam. Depending on the configuration, it can provide instantaneous flow, cumulative flow, temperature, pressure, density, frequency, pulse signals, analog current output, digital communication, and compensation functions. The result is a versatile instrument that can serve both as a local display meter and as an important field device within a larger automation system.
Compared with many traditional mechanical flowmeters, the XG-LUGB series has no rotating impeller, gear train, or other moving measurement mechanism. This simple internal structure reduces mechanical wear, lowers maintenance requirements, and helps maintain stable performance over a long operating period. Compared with single-purpose flowmeters, it also offers broader media compatibility, multiple output options, optional temperature and pressure compensation, and a wide range of nominal diameters.
The product is manufactured and supplied by Xinguo Group Co., Ltd., a Chinese industrial instrumentation and materials enterprise with experience in temperature instruments, pressure instruments, flowmeters, level instruments, alloy wire, cables, and related products. Its manufacturing capabilities, quality systems, technical personnel, and inspection procedures support the production of instruments intended for demanding domestic and international applications.
XG-LUGB series intelligent vortex flowmeter
The XG-LUGB series operates according to the Karman vortex principle. When a fluid passes a specially designed bluff body inside the flow passage, alternating vortices are generated downstream. The frequency of these vortices is related to the velocity of the flowing medium within a defined operating range. A piezoelectric detection element senses the pressure fluctuations created by the vortices and converts them into an electrical signal.
The intelligent electronics process this frequency signal and calculate the flow rate. Depending on the selected configuration and measured medium, the instrument can display volume flow, mass flow, temperature, pressure, density, frequency, and totalized flow. Digital processing helps the meter distinguish the useful vortex signal from unwanted interference and provides a stable basis for output and display functions.
Because the measurement principle is based on fluid velocity rather than mechanical displacement, the meter is suitable for many industrial media. It can be applied to water and other relatively low-corrosive liquids, compressed air, general gases, saturated steam, and superheated steam. For steam and gas applications, the instrument is especially useful because it can be combined with compensation functions to improve the practical value of the measured data.
As with all flow technologies, application conditions must be considered before selection. Media containing large amounts of solid particles may damage the probe or disturb the vortex pattern. Highly viscous liquids and fluids that easily scale on the sensor may also reduce accuracy or shorten service life. The most reliable operation is achieved when the medium is sufficiently clean, the pipeline is properly arranged, and the flow velocity remains within the specified measurement range.
One of the primary advantages of the XG-LUGB series is its simple and sturdy construction. There are no moving parts in the flow-sensing mechanism. This eliminates common wear points associated with mechanical turbine, gear, and impeller meters. The absence of moving components also reduces the need for lubrication, replacement parts, and periodic mechanical adjustment.
Lower maintenance is particularly valuable in steam and utility systems where instruments may be installed in difficult-to-access locations. A flowmeter that can continue operating without frequent mechanical servicing reduces labor requirements and minimizes interruptions to the process. It can also help lower the total cost of ownership over the service life of the installation.
The robust design is complemented by piezoelectric crystal detection components. These components provide high reliability and support operation within an indicated temperature range of approximately –20°C to 280°C. The actual temperature rating and installation arrangement should be confirmed for each application, especially where high-temperature steam, insulation, vibration, or ambient temperature extremes are present.
A single vortex flowmeter technology can be used for gases, vapors, and liquids. This provides a practical advantage for plants that operate multiple utility systems but prefer to standardize on a manageable range of instrument types. The same general measurement concept can be applied to boiler steam, compressed air, process gas, circulating water, and other compatible media.
The XG-LUGB series offers nominal diameters from DN25 to DN300 for wafer or flanged full-bore configurations. Insertion versions extend the available pipeline diameter range from approximately DN300 to DN2000. This allows the product family to address both small process branches and large utility pipelines.
The measurement range can reach a range ratio of up to 10:1, with wider ranges possible in special cases subject to operating conditions and engineering confirmation. This broad range helps the meter handle changes in demand, such as the variation between night-time and peak daytime utility consumption.
Pressure loss is an important consideration in any flow measurement system. Excessive pressure drop can increase pump or compressor energy consumption and may reduce the available pressure at downstream equipment. The XG-LUGB vortex flowmeter is designed to provide low pressure loss compared with many flow devices that use more restrictive internal structures.
Low pressure loss contributes to lower operating costs and supports energy-conscious plant design. In steam and compressed-air systems, even small pressure losses can accumulate across a large number of devices. Selecting a flowmeter with an appropriate internal design can therefore contribute to more efficient distribution and improved system economics.
The low-loss design does not eliminate the need for correct sizing. A meter should be selected so that normal, minimum, and maximum flow conditions remain within the recommended operating range. Oversizing may lead to insufficient vortex strength at low flow, while undersizing may cause excessive velocity or pressure loss. Proper sizing is therefore essential to obtaining the full benefit of the technology.
The instrument uses a low-power CPU and LCD display. Local users can view instantaneous flow and cumulative flow at the measuring point without relying on a separate control-room display. Depending on configuration, the display can also show temperature, pressure, density, frequency, and other operating parameters.
On-site access to multiple parameters improves commissioning and troubleshooting. A technician can review the flow value, compare it with process conditions, verify totalized consumption, and inspect the signal frequency without connecting an external test instrument. The hidden-button design and password-controlled menu help prevent unauthorized changes to instrument parameters.
Digital processing also helps support signal stability. The electronics are designed with a high level of integration and are intended to avoid drift and self-excitation. In practical operation, stable signal processing is important because vibration, pressure pulsation, electrical interference, and changing process conditions can otherwise produce fluctuating readings.
The XG-LUGB series is available in several power and transmission arrangements. A battery-powered local version is intended for applications where local indication is sufficient. The specified battery life can reach approximately two years under appropriate operating conditions. A battery-powered remote-transmission version is available for installations requiring remote data access, while an externally powered remote-transmission version can be connected to a plant instrumentation power system.
The instrument supports digital pulse output and can also provide a two-wire 4–20 mA current signal. HART protocol and an RS485 communication interface are available according to the selected configuration. RS485 communication supports integration with supervisory systems, PLCs, energy-management systems, and other digital platforms using applicable communication protocols such as Modbus.
This output flexibility allows the same product family to serve different levels of automation. A small utility installation may only need a local display and pulse output for totalization. A larger process facility may require 4–20 mA transmission, HART configuration, or RS485 communication with a central control system. The ability to select the output arrangement helps reduce the need to use unrelated meter types throughout one plant.
The product includes a specific real-time data storage function intended to protect internal data. This is valuable in applications where flow totals, configuration parameters, or operating records must remain available despite interruptions or abnormal conditions. Data retention is especially important for energy settlement, production reporting, utility allocation, and maintenance analysis.
Although data storage improves operational security, users should still establish appropriate procedures for periodic data review and backup when the flowmeter is connected to a supervisory system. The storage function should be regarded as an additional protection feature rather than a replacement for plant-level data management.
The stated explosion-proof rating for applicable configurations is Exd II BT4. This provides an option for selected hazardous industrial environments when the complete instrument specification, installation method, cable entries, electrical connections, and site classification are suitable. Hazardous-area installation must always comply with the applicable national and international regulations and the certified configuration of the instrument.
The product has an indicated IP65 protection level. This helps protect the enclosure against dust ingress and water jets from defined directions. Correct gland selection, cover installation, grounding, and maintenance of seals remain necessary to preserve the intended protection level in the field.
The product family includes multiple structural arrangements. The full-bore wafer or flanged type is suitable for standard pipeline installations. Simple insertion and ball-valve insertion versions are available for larger pipelines or applications where insertion technology is preferred. A ball-valve design may allow installation or removal under suitable operating conditions, subject to engineering requirements and safe work procedures.
High-pressure, submersible, and corrosion-proof versions are also listed as selectable structures. The correct configuration depends on pressure, medium composition, pipeline arrangement, environmental exposure, access conditions, and hazardous-area requirements. Selecting a special version should be based on a complete application review rather than on nominal diameter alone.
The standard sensor nominal pressure range is indicated as 1.0 MPa to 4.0 MPa. High-pressure sensor versions can be supplied from approximately 6.3 MPa to 42 MPa as special orders. Pressure class, flange standard, temperature, and material compatibility must be confirmed before purchase.
| Selection Item | Available or Indicated Options | Application Consideration |
|---|---|---|
| Measured medium | Liquid, gas, steam | Select according to density, viscosity, conductivity, cleanliness, temperature, and pressure. |
| Structure | Full-bore wafer/flanged, simple insertion, ball-valve insertion, high-pressure, submersible, corrosion-proof | Choose according to pipe size, maintenance access, pressure, and environment. |
| Signal output | Default output, 4–20 mA, pulse, HART, RS485 | Match the signal to the PLC, DCS, energy system, or local display requirement. |
| Compensation | None, temperature, pressure, or temperature and pressure | Useful where changing operating conditions affect gas or steam calculations. |
| Temperature option | Low-temperature and high-temperature versions | Confirm the process temperature and sensor construction. |
| Pressure option | Normal pressure or high pressure | Confirm maximum working pressure and required safety margin. |
| Power supply | Internal battery, battery plus external 24 V, or 24 VDC only | Select according to local access and remote-transmission needs. |
| Environment | Normal or explosion-proof environment | Verify area classification and certified installation requirements. |
The range table below summarizes the stated flow ranges for full-bore and insertion configurations. The values should be used for preliminary selection. Final selection requires confirmation of medium properties, pressure, temperature, density, operating flow, minimum flow, maximum flow, and required accuracy.
| Model | Nominal Diameter | Liquid Range (m³/h) | Gas Range (m³/h) | Steam Range (m³/h) |
|---|---|---|---|---|
| XG-LUGB-25 | DN25 | 1.0–12 | 8.8–124 | 7–124 |
| XG-LUGB-32 | DN32 | 1.5–20 | 15–200 | 12–200 |
| XG-LUGB-40 | DN40 | 2.0–26 | 23–300 | 18–300 |
| XG-LUGB-50 | DN50 | 3–56 | 35–450 | 28–450 |
| XG-LUGB-65 | DN65 | 4.8–96 | 63–820 | 50–820 |
| XG-LUGB-80 | DN80 | 7.2–145 | 90–1200 | 75–1200 |
| XG-LUGB-100 | DN100 | 11–224 | 142–1950 | 120–1950 |
| XG-LUGB-125 | DN125 | 18–352 | 220–3000 | 175–3000 |
| XG-LUGB-150 | DN150 | 26–512 | 320–4400 | 260–4400 |
| XG-LUGB-200 | DN200 | 45–920 | 565–7800 | 440–7800 |
| XG-LUGB-250 | DN250 | 70.4–1200 | 850–12400 | 720–12400 |
| XG-LUGB-300 | DN300 | 100–2020 | 1250–17500 | 1020–17500 |
For large pipelines, insertion models are listed from DN300 to DN2000. Their published ranges are based on flow velocity at the insertion center point and should not be interpreted in the same way as the full-bore flow ranges without engineering review.
| Insertion Model | Nominal Diameter | Liquid Range (m³/h) | Gas Range (m³/h) | Steam Range (m³/h) |
|---|---|---|---|---|
| XG-LUGB-300 | DN300 | 127–1650 | 1810–13500 | 1260–13500 |
| XG-LUGB-400 | DN400 | 226–2950 | 3250–23800 | 2250–23800 |
| XG-LUGB-500 | DN500 | 353–4600 | 5560–37800 | 3500–37800 |
| XG-LUGB-600 | DN600 | 510–6620 | 7320–54600 | 5100–54600 |
| XG-LUGB-800 | DN800 | 910–11800 | 13200–96700 | 9100–96700 |
| XG-LUGB-1000 | DN1000 | 1450–18500 | 20100–151600 | 14500–151600 |
| XG-LUGB-1200 | DN1200 | 2050–26650 | 27500–209000 | 20500–209000 |
| XG-LUGB-1500 | DN1500 | 3200–40300 | 45500–335000 | 32000–335000 |
| XG-LUGB-2000 | DN2000 | 5600–71400 | 80200–608600 | 56000–608600 |
Correct installation is as important as the internal design of the flowmeter. Vortex measurement depends on the formation of a stable flow pattern. Bends, valves, pumps, reducers, expanders, partially closed control devices, and other disturbances can create turbulence that affects the vortex signal.
As a general guideline, the upstream straight pipe length should be approximately 15 to 20 pipe diameters, while the downstream straight pipe length should be approximately 5 to 10 pipe diameters. The exact requirement may depend on the disturbance source, meter design, pipeline layout, and applicable installation instructions. Longer straight sections may be beneficial where the flow is highly disturbed.
The meter should be installed away from strong vibration sources such as pumps, compressors, reciprocating equipment, and heavily vibrating valves. Pipeline supports should be adequate, and the meter should not be used as a structural support for an unsupported pipe. Excessive vibration can cause fluctuating readings or make it difficult for the electronics to distinguish the vortex signal from mechanical interference.
For liquid measurement, the pipeline should remain full at the meter location. The installation should avoid positions where air pockets can collect or where the pipe may run partially empty. For steam and gas, the orientation should prevent condensate accumulation from affecting the sensor. Drainage, insulation, heat tracing, and condensate management should be considered in steam installations.
Pipe alignment is also important. The meter should be installed concentrically with the pipeline, and the internal pipe diameter should not change abruptly at the sensor. Gaskets must not protrude into the flow path. Welding residue, scale, and foreign material should be removed before commissioning because these can disturb the flow pattern or damage the probe.
Large fluctuations in the displayed flow value may result from several conditions. The most common causes include flow below the effective measurement range, insufficient straight pipe length, excessive pipeline vibration, unstable process conditions, and bubbles in the measured medium. A systematic inspection should begin with the actual flow rate and then examine installation and process conditions.
If the actual flow is too low, the vortex signal may be weak and intermittent. Selecting a smaller meter or changing the process arrangement may improve the signal-to-noise ratio. If vibration is the cause, supports, flexible connections, isolation measures, or a different meter location may be required. Where bubbles are present in a liquid, the system should be evaluated for air ingress, inadequate back pressure, cavitation, or poor pump suction conditions.
For steam, unstable pressure and wetness can influence the calculated result. In applications where mass flow or compensated volume flow is required, the selected temperature and pressure inputs must be correctly installed and calibrated. The meter should not be expected to compensate for a fundamentally unstable or poorly conditioned process.
Flow measurement of liquids is often expressed as volume flow under operating conditions. Gas and steam measurement, however, can be strongly affected by pressure, temperature, density, and compressibility. The XG-LUGB selection system therefore includes no compensation, temperature compensation, pressure compensation, and combined temperature-and-pressure compensation modes.
Temperature compensation can be useful where the operating temperature changes significantly or where steam density varies with temperature. Pressure compensation can improve the representation of gas or steam consumption when line pressure is not constant. Combined compensation is appropriate for applications where both variables influence the required calculation.
Compensation sensors and signal inputs must be selected and installed correctly. A pressure measurement point should represent the pressure at the flowmeter location, and a temperature sensor should be positioned where it accurately reflects the medium temperature. Incorrect sensor placement, blocked impulse lines, thermal stratification, or delayed response can reduce the benefit of compensation.
The choice between instantaneous volume flow, mass flow, and compensated flow should be made during the application-design stage. For energy settlement or boiler efficiency analysis, mass flow or energy-related calculations may be more useful than uncorrected operating-volume flow. For basic pipeline monitoring, local volume flow and totalized volume may be sufficient.
Mechanical flowmeters can be effective in suitable clean-liquid applications, but their moving parts may wear over time. Particles, corrosion products, or excessive velocity can affect their performance. The vortex meter avoids a rotating measurement assembly, which can reduce maintenance and provide better long-term stability in many industrial utility applications.
The vortex design is also more adaptable across different media categories. A plant may use the technology for water, compressed air, natural or process gases, and steam, whereas some mechanical meters are limited by viscosity, cleanliness, or phase condition.
Electromagnetic flowmeters are widely used for conductive liquids such as wastewater, acids, alkalis, and mud. They are not appropriate for gases, steam, or most non-conductive liquids. A vortex meter is the more suitable choice when the application involves steam, gas, compressed air, or a non-conductive liquid.
For conductive liquid applications, the final choice should consider conductivity, solids content, lining compatibility, pressure, temperature, and accuracy requirements. Vortex and electromagnetic technologies are complementary rather than universally interchangeable.
Differential-pressure flowmeters can measure many industrial media, but they generally require a primary restriction device, impulse lines, pressure connections, and differential-pressure instrumentation. These components may introduce permanent pressure loss and require inspection for blockage, leakage, or condensation problems.
The vortex flowmeter integrates the sensing structure into a compact instrument and provides direct frequency-based measurement. This can simplify installation and reduce the number of separate components. However, differential-pressure systems may remain advantageous in applications with established standards, very high pressure, special custody-transfer requirements, or specific low-flow conditions. Selection should be based on the entire process and measurement specification.
Ultrasonic meters can offer non-invasive or clamp-on measurement options, which are valuable when pipeline modification is difficult. Vortex meters, in contrast, provide a direct in-line or insertion solution with a compact sensing structure and broad use in steam and gas systems. The best choice depends on access, fluid condition, pipe material, installation restrictions, and the required measurement performance.
Boiler rooms and district-heating networks require reliable steam measurement for production control, energy accounting, and distribution management. The XG-LUGB series can be used for boiler steam, thermal pipeline steam, and heating settlement. Its local display supports quick checks near the pipeline, while 4–20 mA, pulse, HART, or RS485 outputs allow centralized monitoring.
For superheated steam, temperature and pressure compensation may be selected where operating conditions change. For saturated steam, the system design should consider dryness, condensate, pressure stability, and the location of the meter. Proper insulation and drainage are particularly important in outdoor or long-distance steam distribution systems.
Petrochemical plants use flow measurement for process gases, utility steam, cooling water, and various liquid media. The availability of high-pressure and corrosion-proof configurations allows engineers to consider the product for more demanding services, subject to material compatibility and certification requirements.
In hazardous environments, the explosion-proof option may support installation in appropriately classified areas. The complete installation must include compatible cable glands, grounding, power supply, signal wiring, and protective procedures. Process engineers should verify chemical compatibility between the measured medium and all wetted materials.
Food and pharmaceutical facilities commonly use compressed air, process steam, purified utility water, and production water. Flow data can support batch control, sanitation verification, utility allocation, and energy management. In these industries, the selected meter materials, hygienic requirements, cleaning procedures, and documentation must be reviewed carefully.
The XG-LUGB series is particularly relevant to general utility measurement. Where the application requires a specialized sanitary design, polished surfaces, validated cleaning, or strict hygienic certification, the exact product configuration and approval documents must be confirmed before use.
Municipal facilities consume and distribute large quantities of compressed air, gas, circulating water, and other public energy resources. Insertion models with large nominal diameters can provide a practical option for large pipelines where installing a full-bore meter would be expensive or disruptive.
Remote transmission and digital communication are valuable for utility networks spread across multiple buildings or operating zones. Centralized flow data can help identify abnormal consumption, compare departments, and schedule maintenance according to actual operating conditions.
The performance of an industrial flowmeter depends not only on its published functions but also on the quality of its materials, assembly, electronics, calibration, inspection, and documentation. Xinguo Group Co., Ltd. operates as a diversified industrial enterprise consisting of several specialized companies covering instruments, alloy materials, cables, and precious metals.
The group was founded in 1997 and is located in Tianchang City, Anhui Province, China. It has a registered capital of RMB 118 million, a land area exceeding 150 mu, and a construction area of approximately 60,000 square meters. The organization employs nearly 300 people, including more than 50 professional technicians, senior technical experts, senior engineers, engineers, and assistant engineers.
This combination of manufacturing scale and technical personnel supports the development of products that require coordination among mechanical design, electronic processing, sensing technology, materials engineering, and quality control. The company’s product portfolio includes temperature instruments, pressure instruments, flowmeters, level instruments, pressure transmitters, pressure gauges, alloy wire, cables, and electrical accessories.
Its cross-disciplinary capabilities are especially relevant to industrial instrumentation. Sensor performance depends on material selection and mechanical geometry. Electronics must process weak signals reliably. Enclosures must withstand the intended environment. Communication functions must be integrated with the measurement circuit. A manufacturer with experience across instrumentation and materials can address these requirements as part of a broader production system.
The company reports certification to ISO9001 Quality Management System, ISO14001 Environmental Management System, and GB/T28001 Occupational Health and Safety Management System standards. These systems provide a structured basis for documented processes, environmental responsibility, workplace safety, corrective actions, and continual improvement.
Quality management is particularly important for flowmeters because product reliability depends on consistency from one unit to the next. Controlled procedures can cover incoming materials, machining, electronic assembly, sensor installation, enclosure sealing, calibration, final inspection, packaging, and customer documentation.
The company states that it uses modern quality management methods, advanced equipment, modern production techniques, and strict inspection procedures at every manufacturing stage. Its products are designed to comply with IEC international standards as well as applicable national and industrial specifications. The exact standards and certificates applicable to a particular XG-LUGB configuration should be requested during technical review.
Research and development capability is important when a flowmeter must be adapted to unusual pressure, temperature, pipeline size, communication, or environmental conditions. The company’s technical team supports product development across industrial measurement and material categories.
Engineering support can assist with model selection, medium evaluation, nominal diameter, pressure class, output type, compensation mode, installation conditions, and special structural requirements. For large insertion meters, high-pressure sensors, explosion-proof applications, and corrosion-resistant versions, early technical communication is particularly valuable.
A strong manufacturer should be able to provide more than a product code. Application support should include a review of minimum and maximum flow, operating temperature, operating pressure, density, viscosity, pipeline dimensions, straight-run availability, power supply, signal requirements, and environmental classification. These factors determine whether a vortex meter is suitable and which configuration will provide reliable service.
The first step is to identify the measured medium. Specify whether it is liquid, gas, saturated steam, or superheated steam. Describe the chemical composition, conductivity if relevant, solids content, viscosity, corrosiveness, and tendency to scale. Media containing large quantities of solids or highly viscous materials may not be suitable.
The second step is to define the operating conditions. Record normal, minimum, and maximum flow. Include operating pressure, design pressure, operating temperature, design temperature, density, and any expected fluctuations. For gas and steam, determine whether the required result is operating-volume flow, standard-volume flow, mass flow, or compensated flow.
The third step is to select the pipeline arrangement. For DN25 to DN300 service, a full-bore wafer or flanged type may be appropriate. For larger lines, insertion measurement may be more practical. Confirm pipe material, internal diameter, wall thickness, access for installation, insulation, and whether hot tapping or isolation is required.
The fourth step is to select outputs and power. Choose local battery operation where independent field display is sufficient. Choose battery plus external 24 V or 24 VDC-only power where remote communication and continuous transmission are needed. Match 4–20 mA, pulse, HART, or RS485 communication to the receiving control system.
The fifth step is to review the environment. Confirm ambient temperature, humidity, outdoor exposure, submersion risk, vibration, corrosive atmosphere, and hazardous-area classification. Select normal or explosion-proof construction as required and verify the applicable protection rating.
The final step is to confirm installation conditions. Measure the available upstream and downstream straight pipe sections. Identify nearby elbows, valves, pumps, reducers, and branches. If the available straight run is limited, consult the manufacturer before finalizing the meter location or consider an alternative flow technology.
Before commissioning, inspect the pipeline for welding slag, debris, scale, and foreign objects. Confirm that the flow direction matches the meter marking and that the meter is centered between the flanges. Check gasket position, bolt tightening, grounding, cable termination, and enclosure sealing.
Verify that the instrument parameters correspond to the actual application. These may include nominal diameter, medium type, output scaling, pulse factor, communication address, temperature and pressure compensation settings, density parameters, password settings, and totalizer configuration.
During initial operation, compare the local display with an independent process reference where possible. Observe the value at low, normal, and high operating conditions. Check whether the signal remains stable when nearby pumps or valves start and stop. Review the totalized value and verify communication with the control system.
Routine maintenance is generally limited because the flow-sensing mechanism has no moving parts. Nevertheless, periodic inspection should include enclosure condition, cable glands, display visibility, electrical connections, grounding, pipeline vibration, process temperature, and pressure. In steam service, inspect insulation and condensate-management arrangements. In corrosive service, check the external housing and exposed installation hardware.
If readings become unstable, investigate process and installation causes before replacing the instrument. Confirm that the flow is within range, the pipeline is full where required, straight pipe lengths are adequate, vibration is controlled, and the medium does not contain excessive bubbles or solids. Review compensation inputs and communication signals as part of the diagnosis.
The meter can measure liquids, gases, saturated steam, and superheated steam when the medium and operating conditions are compatible with the selected configuration. It is not recommended for media containing large amounts of solid particles or highly viscous materials that easily scale on the probe, because these conditions may damage the sensor or disturb measurement.
The vortex measurement principle can be applied to liquids and gases, but the meter must be selected and configured for the actual medium, density, pressure, temperature, and flow range. A model suitable for one service should not automatically be transferred to another service without reviewing the operating conditions.
Common causes include flow below the effective range, excessive pipeline vibration, insufficient upstream or downstream straight pipe, unstable process conditions, and bubbles in the medium. Check the actual flow rate, installation layout, nearby pumps and valves, pipeline supports, and liquid-system air ingress. For steam, also inspect pressure stability and condensate conditions.
A general guideline is 15 to 20 pipe diameters upstream and 5 to 10 pipe diameters downstream. The exact requirement depends on the type and severity of upstream disturbance. Keep the meter away from bends, valves, pump bodies, reducers, and other turbulence-producing components whenever possible.
Choose a vortex meter for steam, gas, compressed air, and non-conductive liquids. Electromagnetic flowmeters are generally selected for conductive liquids such as sewage, acid, alkali, and mud. The decision should be based primarily on the medium’s physical and electrical properties.
Depending on the selected configuration, the meter can provide digital pulse output, two-wire 4–20 mA output, HART communication, and RS485 communication. The required interface should be specified according to the PLC, DCS, energy-management platform, or remote monitoring system.
An explosion-proof configuration with a stated Exd II BT4 rating is available for applicable applications. The complete instrument model, cable entries, installation method, power supply, grounding, and site classification must be checked to ensure compliance with the relevant hazardous-area requirements.
Standard-type sensors are indicated for nominal pressures from 1.0 MPa to 4.0 MPa. High-pressure sensor versions from approximately 6.3 MPa to 42 MPa can be supplied as special orders. The actual selection must be confirmed against the process design pressure and applicable flange or connection standard.
The battery-powered local version is indicated to provide approximately two years of battery life under appropriate operating conditions. Actual life depends on display use, output functions, communication activity, ambient temperature, and operating configuration.
The product is suitable for measuring mass flow and volume flow when the required density, temperature, pressure, and compensation information are available. Gas and steam applications should be reviewed carefully to determine whether temperature compensation, pressure compensation, or combined compensation is necessary.
The XG-LUGB series intelligent vortex flowmeter combines the practical advantages of vortex measurement with digital processing, local indication, flexible outputs, compensation functions, and a broad range of industrial configurations. Its simple structure has no moving measurement parts, helping reduce wear and maintenance. Its low pressure loss supports efficient operation, while its broad media capability allows measurement of liquids, gases, saturated steam, and superheated steam.
The product family covers full-bore and insertion installations, nominal diameters from DN25 to DN2000, standard and high-pressure applications, normal and explosion-proof environments, battery and externally powered arrangements, and analog, pulse, HART, and RS485 communication options. These choices make it suitable for thermal heating, petrochemical processing, food and pharmaceutical utilities, municipal systems, compressed-air networks, and general industrial energy management.
Performance depends on correct selection and installation. Appropriate sizing, adequate straight pipe, controlled vibration, clean and compatible media, proper compensation, and accurate commissioning are essential. When these conditions are addressed, the flowmeter can provide dependable data for process control, energy accounting, maintenance planning, and production management.
Supported by Xinguo Group’s instrumentation experience, technical personnel, manufacturing resources, quality systems, and inspection procedures, the XG-LUGB series offers a competitive solution for industrial flow measurement. Its combination of robust construction, intelligent functionality, broad application range, and manufacturing support makes it a strong candidate for facilities seeking to standardize flow measurement while improving operational visibility and long-term cost control.
1. Xinguo Group Co., Ltd., XG-LUGB Series Intelligent Vortex Flowmeter Product Information.
2. Xinguo Group Co., Ltd., Product Selection and Configuration Data for Vortex Flowmeters.
3. International Electrotechnical Commission, Industrial-Process Measurement and Control Guidance.
4. International Organization for Standardization, ISO 9001 Quality Management Systems.
5. International Organization for Standardization, ISO 14001 Environmental Management Systems.
6. General Industrial Practice for Vortex Flowmeter Installation, Straight-Pipe Requirements, and Flow Conditioning.
7. General Industrial Practice for Steam, Compressed-Air, Gas, and Liquid Flow Measurement.
8. General Safety Principles for Explosion-Protected Electrical Equipment in Hazardous Industrial Areas.
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