XG-W type Velbar flowmeter Manufacturers
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  • XG-W type Velbar flowmeter
  • XG-W type Velbar flowmeter

XG-W type Velbar flowmeter

The XG-W type Velbar flowmeter is a high-precision measuring instrument developed based on the Pitot tube speed measurement principle, using advanced aerodynamic principles and supplemented by wind tunnel testing methods. It is a differential pressure and rate-averaging flow sensor. The flow rate is represented by the difference between the average total pressure and static pressure of the sensor in the fluid, which is commonly used to measure the flow rate of liquids, gases, and vapors.    

Product Features:
1. The measuring surface is designed based on aerodynamic principles and, after special processing, can generate very little fluid traction force and vortex shedding force.
2. The static pressure generated by the static pressure hole on the side is located before the separation point between the fluid and the sensor, and is a stable, non-pulsating differential pressure signal.
3. There are no movable parts in the structure, which ensures the lifespan of the sensor and long-term stability.
4. High precision (± 0.5~1.0% F.S) and good repeatability (± 1.0%).
5. This flowmeter has low pressure loss, greatly reducing energy consumption.
6. The static pressure port of the flowmeter is located on both sides of the sensor and is extremely insensitive to foreign objects and dust in the medium.
7. This flowmeter is basically maintenance-free, easy to install, and cost-effective.
8. For the convenience of users, our company's Weiliba flowmeter has integrated and split structures.
9. The intelligent integrated power flow meter adopts advanced circuit design, with powerful functions, low power consumption, a large-screen LCD for flow information, and internal storage to ensure data security.
10. The integrated Powerbar flowmeter system can be powered by batteries and external 24VDC, with an output of 4-20mA, pulse signal, and Hart protocol.  

Main selling points:
1. Small pressure loss and low energy consumption: Based on the principle of averaging tube measurement, the pressure loss is much lower than that of throttling flow meters, which saves power and energy consumption during long-term operation and is suitable for continuous working conditions with large pipe diameters.
2. Moderate requirements for straight pipe sections: The probe rectification design requires a shorter straight pipe section compared to orifice plates, making it suitable for renovation projects with limited pipeline space on site.
3. Integrated structure, maintenance-free: No moving mechanical parts; sturdy and impact-resistant; not easily worn; basically no need for frequent maintenance after installation; long service life.
4. Wide range: It can achieve low- to high-flow-rate measurement, and one instrument can cover a large flow range, measuring liquids, gases, and vapors.

Application industry:
1. Electric thermal power: monitoring the flow of boiler air supply, induced draft, flue gas, steam, circulating water, and gas in power plants.
2. Metallurgical industry: Flow detection of blast furnace gas, coke oven gas, compressed air, flue gas, and cooling water.
3. Petrochemical industry: Process gases, various types of steam, circulating process fluids, and flow measurement and monitoring of large-diameter pipelines.
4. HVAC municipal: Measurement of steam, gas, industrial waste gas, and ventilation duct airflow for urban centralized heating.

FAQ Performance Specifications

Q1: Is Weiliba suitable for measuring large-diameter pipelines?
A: Very suitable. Adopting the principle of a uniform-velocity tube, the cost-effectiveness advantage is prominent for large pipe diameters, without the need to cut off the pipeline, and online plug-in installation can be achieved, making construction convenient.

Q2: Will the measurement of dirty gases by Velbar be easily blocked?
A: The probe is designed with a self-flushing pressure relief hole, which has good adaptability to smoke and gas containing dust and impurities. When the dust content in the medium is extremely high, it is recommended to choose a blowing device to prevent blockage of the pressure tapping hole.

Q3: What are the main differences between the Velbar and V-cone flow meters?
A: Weiliba belongs to the uniform velocity tube, with plug-in installation and smaller pressure loss, making it more suitable for large-diameter gases and air volumes; The V-cone is a throttling and pipeline installation, with better accuracy in measuring liquids and steam.

Q4: What are the requirements for installing straight pipe sections by Weiliba?
A: Compared to orifice plates, the requirements are lower, generally requiring 8-12D upstream and 3-5D downstream. Installation near elbows, valves, and other pipe fittings is preferred to meet the requirements for straight pipe sections and ensure measurement accuracy.

Applicable Pipe Diameter 25–6,000 mm
Measurement Accuracy ±0.5–1.0 F.S.
Repeatability 1.00%
Operating Temperature –100–500 °C; up to 800 °C for special applications
Operating Pressure 0–25 MPa; up to 40 MPa for special applications
Upper Measurement Limit Depends on process requirements and probe strength
Lower Measurement Limit Depends on the minimum differential pressure required for measurement
Gas: minimum differential pressure 0.025 kPa, flow velocity 4.5 m/s
Liquids: minimum differential pressure 0.260 kPa, flow velocity 0.6 m/s
Steam: minimum differential pressure 0.400 kPa, flow velocity 9.7 m/s
Range Ratio Range ratio of 10:1, provided accuracy is maintained
Compatible Media Full-bore, unidirectional flow of gases, steam, and liquids with a viscosity not exceeding 10 centipoise
Straight Pipe Section Requirements Typically 7D upstream and 3D downstream

Equipped with a differential pressure transmitter and a smart flow calculator.
Equipped with a condenser for steam measurement.
Connection types: fully welded, flanged, threaded.

Flow Meter Selection Table

XG-W Weili Ba Flow Meter
Nominal Diameter -XXX 100 means DN100
Structure Type Z Integrated Smart Type
L Remote (Split) Type
Measured Medium 1 Liquid
2 Gas
3 Steam
Body Type 1 Flanged Pipe Type
2 Flanged Insertion Type
3 Threaded Insertion Type
Pipe Static Pressure A 0 – 0.6 MPa
B 0 – 1.0 MPa
C 0 – 1.6 MPa
D 0 – 2.5 MPa
E 0 – 4.0 MPa
F 0 – 6.3 MPa
G 0 – 10 MPa
H 0 – 16 MPa
I 0 – 25 MPa
J 0 – 40 MPa
Process Condition 0 Standard
1 Corrosion-Proof
2 High Temperature
3 Explosion-Proof
Compensation Mode 0 No Compensation
P Pressure Compensation Only
T Temperature Compensation Only
Q Full Pressure & Temperature Compensation
Integrated Signal Output 0 None
1 4 – 20 mA
2 Pulse
3 HART
Integrated Power Supply 0 Internal Battery
1 Battery + 24 VDC Dual Selectable
2 External 24 VDC
Xinguo Group Co., Ltd.
ABOUT US Xinguo Group Co., Ltd.
Xinguo Group Co., Ltd. is a high-tech enterprise with subsidiaries including Anhui Xinguo Instrument Co., Ltd., Anhui Xinguo Alloy Co., Ltd., Anhui Xinguo Cable Co., Ltd. and Anhui Xinguo Precious Metals Co., Ltd. Founded in 1997, the Group is located in Tianchang City, Anhui Province — a National Civilized City. It has a registered capital of 118 million RMB, covers a land area of over 150 mu and a building area of 60,000 square meters. The company currently has more than 300 employees, among whom over 50 are professional and technical personnel including senior engineers, engineers and assistant engineers.
The Group is a China Custom XG-W type Velbar flowmeter Manufacturers and XG-W type Velbar flowmeter Supplier, mainly engages in the R&D, production and sales of temperature instruments, pressure instruments, level instruments, flow instruments and digital display instruments. Its product portfolio also encompasses power cables, control cables, compensation cables, computer cables, signal cables, MI heating cables, mineral insulated cables, electric heat tracing tapes, cable trays and accessories, high and low voltage distribution equipment, complete automation control systems, instrument valves, pipeline valves and fittings, glass instruments and laboratory equipment. We also supply platinum-rhodium wires, precision alloys and complete mechanical equipment, while providing supporting processing, manufacturing, sales and technical services. Additionally, we deal in professional instrument materials, alloy materials and precious metals. Our products are widely applied in power, petroleum, chemical, metallurgy, building materials, machinery, food, aerospace, new energy and other industrial sectors, as well as scientific research and education fields.
Anhui Xinguo Alloy Co., Ltd. is dedicated to manufacturing a full range of precision alloy materials and serves as a council member of the Instrument Materials Branch of China Instrument & Control Society. Its flagship products cover thermocouple alloy wires (K, N, E, J, T types), thermocouple compensation alloy wires (KX, EX, NX, JX, TX, KCA, KCB, NC, SC), high-resistance heating alloys, precision resistance alloys, heating resistance alloys, pure nickel wires, manganese-copper alloys and Monel alloys. These products are extensively used in aviation, petroleum, chemical engineering, machinery manufacturing, power and energy industries.
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