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Industry Information
Verabar meters only produce very low permanent pressure losses
2012-3-21 10:57:02

Application Suitable for high-precision flow measurement of gas, liquid and steam. Verabar is a differential pressure, rate average flow sensor, which measures the flow through the differential pressure generated by the sensor in the fluid. Verabar reflects the true flow velocity of the fluid, with an accuracy of ± 1.0% and a repeatability of ± 0.1%. The outstanding advantage of Verabar is: output a very stable, pulse-free differential pressure signal

2、探头的设计特点子弹头截面形状的探头能产生精确的压力分布,固定的流体分离点;位于探头侧后两边、流体分离点之前的低压取压孔,可以生成稳定的差压信号,并且有效防堵。 Verabar flowmeter 2. Probe design features Probes with a cross-sectional shape of the bullet head can produce accurate pressure distribution and fixed fluid separation points; low-pressure pressure tapping holes located on the two sides behind the probe side and before the fluid separation point can generate a stable difference Pressure signal, and effective anti-blocking. The internal integrated structure can avoid signal leakage, improve the structural strength of the probe, and maintain long-term high accuracy. Verabar flowmeter 3, Verabar probe anti-clogging design Verabar flow probe with its excellent anti-clogging design, completely get rid of the shortcomings of plug-in flow probes such as Annubar, which makes the average speed tube flow probe anti-clog level Reached unprecedented heights. The high-pressure pressure taking hole of the probe will not be blocked by the front of the probe to form a high-pressure area. The pressure is slightly higher than the static pressure of the pipeline, which prevents particles from entering. Please note: The velocity of the fluid at the probe's high-pressure tapping hole is zero, and no objects will enter the tapping hole. When the machine is turned on, the fluid enters the elbow under the static pressure of the pipeline, and a pressure equilibrium state is quickly formed. When the pressure equilibrium state is formed, the fluid encounters high pressure at the inlet of the elbow, detours, and no longer enters the elbow. Verabar's low-pressure holes achieve essential anti-blocking. In general, dust, sand, and particles are concentrated on the back of the probe under the action of vortex force. This is why autumn leaves are always concentrated behind leeward houses. The other low-pressure pressure taking holes of other probes are taken in the vacuum area at the end of the probe. Under the action of vortex force, the low-pressure pressure taking holes of the probe are quickly blocked by impurities brought by eddy current. The unique design of Verabar makes the low-pressure tapping holes on the back of the probe side, the front of the fluid separation point and the trailing area. This design essentially prevents clogging and produces a very stable low-voltage signal.

4. Advantages of the probe ● It can measure a variety of media and has a wide range of applications ● High accuracy and large range ratio ● The probe's pressure hole is essentially anti-blocking ● The measurement signal is stable and the fluctuation is small ● The permanent pressure loss of the pipeline is low ● The unique high-strength bullet Head-shaped single-chip dual-cavity structure ● Low installation cost and basically maintenance-free ● Can be installed and repaired online

5. Characteristics of Verabar averaging tube flow sensor ● Stable signal Verabar's low-pressure pressure taking holes are located on the back of the probe side, between the fluid and the probe separation point, and away from the vortex fluctuation area.
● Excellent long-term high-precision Verabar can guarantee long-term stability of accuracy, because:
⑴. It is not affected by abrasion, dirt and oil.
⑵. There are no moving parts in the structure.
⑶. The occurrence of blockage is excluded from the design. At the front of the probe, a high static pressure area surrounds the probe so that the high-pressure pressure taking hole will not be blocked. The most important thing is that the low-pressure holes are taken at the back two sides of the probe side, and the fluid is swept across the surface, which protects the low-pressure holes from being swept, and other probes are easily blocked because their low-pressure pressure holes are collected by impurities. Low voltage fluctuation area.

● Lowest installation cost ⑴. It only needs a few inches of line welding, and the installation is very simple and fast.
⑵. Apply special tools to achieve online installation with pressure.
⑶. All valves and interfaces of various instruments need only simple assembly, which requires very low assembly costs.

● Very low operating cost. It is a non-constricting design. As a plug-in flow probe, Verabar has the lowest operating cost.
威. Verabar produces only very low permanent pressure losses, typically less than 0.7KPa
⑶. The permanent pressure loss generated by an orifice plate element exceeds 14KPa
的能量损耗降低了95%。 ⑷. Compared with the orifice plate, the energy loss of Verabar flowmeter is reduced by 95%.

● The continuous operation of Verabar basically eliminates the possibility of clogging, but in the following cases, Verabar still needs to pay attention to the clogging:
⑴. When the impulse tube leaks and the high pressure balance area of the probe is damaged, particles with smaller diameters in the impurities may enter the pressure taking hole.
⑵. When the pipeline is stopped, due to the Brownian motion of the molecules, small particles of impurities may enter the pressure taking hole.
⑶. The system frequently starts and stops. At the moment when the high-pressure area is formed, small particles of impurities may enter the pressure taking hole. Over time, the probe may be blocked.
⑷. The medium contains a large amount of tar, algae, or contains fibrous substances, which may also cause the probe to be blocked.

6. Apply the new technology. The new design concept provides a new concept. The instrument shut-off valve is built in the joint of the instrument:
1. Make installation and maintenance easier.
2. Reduce the number of assembly parts and reduce the cost of hardware connection.

Quick installation system Quick insertion and extraction ● Sealed drive system can avoid damage to components ● Can be applied to the installation of multiple probes, all installed within less than 1 hour Jiangsu Jinhu Dongxiang Instrument Factory has been engaged in the research and development of Verabar flowmeters for many years The quality and performance of Dongxiang Weiliba flowmeter produced and produced by the company have been unanimously approved by users. Dongxiang Verabar flowmeter is widely used in many fields of industrial production. 在工业生产方面的应用。 The technical staff of Dongxiang Instrument Factory will briefly introduce the application of Verabar flowmeter in industrial production.
1. Measurement medium-When air is used to measure air volume in industrial production, Verabar flowmeters are widely used by power plants, metallurgical plants and petrochemical plants due to their good anti-blocking performance, small pressure loss, easy installation, and good repeatability. Welcome.
2. Measurement medium—When water is used for circulating water measurement in industrial production, because its system cannot be discontinued, and the flow is very large, the pipeline conditions are complicated, and the site environment is harsh, it was difficult to have a suitable measurement method before. Verabar's average velocity flow probe can guarantee non-stop installation and maintenance, good measurement stability, and multiple secondary meter connection methods. By selecting the model with the best performance-price ratio, it can solve various measurement problems in production.
3. Measurement medium-When steam is used for steam measurement in industrial production, Verabar flowmeters are widely used due to their small permanent pressure loss, high long-term accuracy, large range ratio, convenient installation and maintenance, and few leak points. .
4.Measurement medium—When the blast furnace gas is used for the measurement of blast furnace gas medium in industrial production, because of its large pipe diameter, the medium contains dust, and the humidity is high, it will easily cause the throttling devices such as orifice plates to block, and The pipeline is not easy to stop production, which brings great inconvenience to the measurement and maintenance of the factory. With its superior anti-clogging design, flexible on-line insertion and removal installation, and long-term high-precision measurement, reliable and practical auxiliary measurement measures make its measurement on blast furnace gas unmatched by other flow meters.
5. Measurement medium-natural gas In the measurement of natural gas, due to the small pressure loss of Verabar flowmeter, high repeat accuracy, easy installation and disassembly, superior anti-blocking performance and other characteristics, it has been adopted by more and more users.
6. Other media Verabar flowmeters can measure the flow of air, water and steam, and can also be used in process gas, olefins such as ethylene, propylene, etc .; nitrogen, oxygen, helium and other gases; diesel, gasoline, etc. Product oil flow measurement