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One, overview

ZPHLV verabav flowmeter used in full compliance with the engineering structure design of aerodynamic theory, is a kind of precision, efficiency and reliability of thesensing element is very outstanding degree.

1, the use of Verabar flowmeter

High precision flow measurement of Verabar flowmeter is suitable for gas, liquid and vapor. Verabar flowmeter is a kind of differential pressure type, average rate of flow sensor, flow measurement by differential pressure sensor generated in the fluid.Verabar flow fluid reflect the true, its accuracy is ± 1, repeatability of ± 0.1. Highlight the advantages of Verabar is: the output of a very stable, no pulsation of differential pressure signal

Design features of 2, probe

Bullet shaped cross-section of the probe to produce accurate pressure distribution,the fixed fluid separation point; located on the low voltage side on both sides before the probe, fluid separation point of the hole to take pressure, differential pressure signal can generate stable, and effective anti blocking. Internal integration structure to avoid signal leakage, improve the probe structure strength, to maintain long-term accuracy.

Anti clogging design 3 Verabar probe

The flow probe Verabar attempts to prevent its excellent design, get rid of thedisadvantages of Annubar, inserted type flow probe is easy to be blocked, theblocking level reached an unprecedented height uniform velocity tube flow probe.

Probe pressure front pressure hole can not be blocked probe formed by pressure,pressure slightly higher than the duct static pressure, prevent the particles into the.Please note: zero pressure hole fluid in probe high speed, no body can enter the hole to take pressure. Boot, flow into the pipe in the pipe under the action of static pressure, pressure, and soon formed a state of equilibrium. When the pressure equilibrium formation, fluid pressure in the pipe inlet is encountered, detour, no longer enter in the elbow.

Low pressure hole of Verabar flowmeter implementation of essential anti blockinggeneral, dust and dirt, sand and particles in the vortex force, concentrated in theprobe back. This is the reason why autumn leaves always concentrated in the lee of the house behind. The other probe due to low pressure taking holes in the probe endvacuum zone, the vortex under the action of force, impurities blocked probe low pressure hole quickly brought by eddy current. The unique design of Verabar flowmeter, the low pressure hole located in the probe side on both sides, front fluid separation and wake region. This design prevents clogging and produces a very stable voltage signals from the essence.

Advantages of 4 probe

● measure a variety of media, a wide range of applications

● high precision, large measuring range ratio

● probe pressure hole nature of anti blocking

● the measurement signal is stable, small fluctuation

● pipeline permanent low pressure loss

● unique bullet shaped monolithic high strength double cavity structure

The low cost of installation, maintenance free

● online installation and maintenance

5 features Verabar uniform velocity tube flow sensor

● stable signal

Low voltage Verabar pressure taking hole located in the lateral fluid and probe, probeon both sides of the separation point, away from the vortex wave region.

● excellent long-term high precision

Verabar to ensure long term stable precision, this is because:

⑴. It can't be affected by wear, dirt and oil.

The moving parts have no structure.

⑶. Design eliminates the blocking phenomenon. In front, high hydrostatic pressurezone around the probe, the high pressure hole can not be blocked. Most importantly,low pressure taking holes in the probe side on both sides, the fluid from the surface oblique sweep, protects the low pressure hole will not be swept rotor, while the otherprobe is easy to block, because of low pressure fluctuations in the region of their low pressure holes in the impurity concentration.

● lowest installation cost

⑴. Only a few inches line welding, complete the installation is very simple and fast.

⑵. Application of special tools, can be achieved with pressure online installation.

3. All valves and a variety of instrument interface only by simple assembly, assemblycost is very low.

The very low operating costs

Whether it is to design a non contractile throttling, as a plug flow probe Verabar,operation cost is the lowest.

⑵. Verabav flowmeter produced only permanent pressure loss is very low, less than the typical 0.7KPa

3. A plate element generated by permanent pressure loss over 14KPa

⑷. Compared with orifice plate, the energy loss of Verabar is reduced by 95.

The continuous work of Verabar avoids blocking may fundamentally, but in the following cases, vembar still have to pay attention to anti blocking:

1. When the pressure pipe leakage, high pressure balance probe was destroyed, the smaller diameter impurities in particles may enter the

Pressure hole.

⑵. When the pipeline in the production, the Brown motion of molecules, impurity particles small may enter the hole to take pressure.

The system. For frequent start stop, formed in the high-pressure area moment,impurity particles small may enter the hole to take pressure, days and months multiplying, there may be caused by the blockage of the probe.

⑷. Medium contains large amounts of tar, algae, or containing fibrous material,possibly caused by the blockage of the probe.

6, the application of new technology

The original joint power design with valves ba... New design concept provides a new concept, in the instrument junction built-in instrument valve installation andmaintenance more simple. The decrease in the number of assembly parts, thehardware cost is reduced. Install the system fast fast insert and pull out the sealingdrive system can avoid damage to components can be respectively applied to multipleprobe installation to install all does not exceed 1 hours.

Two, the main technical indexes

1, Verabar flow measurement system performance

The measurement accuracy: ± 1 repeat accuracy: + 0.1

Application of pressure: 0 ~ 40MPa for temperature: - 180 ℃～ + 550 ℃

Measurement limit: depending on the probe intensity measurement limit depends on the minimum differential pressure measurement requirements:

Quantity: more than 10: 1 ratio

Suitable diameter: 38mm ~ 9000mm round tube, square tube

Suitable medium: full pipe, a one-way flow, one-way gas, steam and liquid viscosity of not more than 10 centipoises

Range of use of Verabar and widely, it a lot for the measurement of gas, liquid and steam, the following is a typical application of medium.

Gas / liquid / vapor

Gas / water / steam

The compressed air / water / steam boiler

Gas / water

Gaseous hydrocarbons / liquid hydrocarbons

Hot air / liquid

Producer gas / thermal liquid