The VERIS Verabar Flow Meter, also called the Verabar Averaging Pitot Tubes, is a kind of differential pressure flow meter.
The SI-VL Verabar Flow Meter is designed with an aerodynamic engineering structure and is a sensor element. The VERIS Verabar Flow Meter is a plug-in flow meter. A Verabar tube sensor is inserted into the pipe. When the fluid flows through the sensor, a high-pressure distribution zone is created in the forward direction of the flow. And a low-pressure distribution zone is created in the rear. Verabar Flow Meter can be used to measure dry gas, humid gas, liquid or vapor, without being limited by dielectric constant.
Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!
VERIS Verabar flow sensors combined with Sino-Inst differential pressure transmitters. Provide the most reliable and accurate DP flow measurement solution on the market.
The VL200 can be inserted and removed under pressure.
Use this model when you can not shut down the pipe to insert the sensor.
The VL200 is the most frequently sold hot-tap model.
It is available in single rod and double rod units for high pressure.
SI-VL350 verabar flow meter
SI-VL350verabar flow meter
The VL350 can be inserted and removed under pressure.
The insertion mechanism (Jack) can be removed and used on multiple pipes.
The Jack can be stored in a dry location away from the elements making it ideal for outdoor and coastal installations.
SI-VL400 verabar flow meter
SI-VL400 verabar flow meter
The VL400 can be inserted and removed under pressure.
Similar to a VL200 except it has a flanged connection to the pipe for added sealing capability.
When plant regulations require a flanged hot tap connection, the VL400 is the correct model to use.
It is available in single rod and double rod units for high pressure.
VERIS Verabar Flow Meter Structure
The Verabar meter flowmeter consists of a detection rod, pressure tap, and a guide rod.
The cross-sectional shape of the detection tube of Verabar is divided into a variety of structures such as a circle,a diamond shape, and an elliptical shape.
What is Verabar Flow Meter?
The VERIS verabar flow meter is a high precision measuring instrument. Based on the principle of a piton tube measurement and applies the air dynamic theory.
Verabar flow meters belong to differential pressure flow meters, rate average of the flow sensor.
It measure flow rate through the differential, between average total pressure and static pressure, which often is used to measure the flow rate of the liquids, steam, and gas.
When the fluid flows through the probe, a high-pressure distribution zone is created at the front.
And the pressure in the high-pressure distribution zone is slightly higher than the static pressure of the pipeline.
According to the Bernoulli equation, the velocity of the fluid flowing through the probe is increased, and a low-pressure distribution zone is generated at the rear of the probe.
The pressure in the low-pressure distribution zone is slightly lower than the static pressure of the pipeline.
The fluid flows from the probe and creates a partial vacuum, at the back of the probe with vortices on either side of the probe.
The cross-sectional shape of the constant velocity flow probe, the rough surface condition and the position of the low-pressure tapping orifice are key factors, in determining probe performance.
The stability and accuracy of the low voltage signal are decisive for the accuracy, and performance of the uniform velocity probe.
The Verabar average velocity probe detects the average differential pressure produced, by the average velocity of the fluid.
The VERIS Verabar average velocity flow probe has multiple pairs of pressure tapping holes, arranged in certain directions in the high and low-pressure areas, which makes it possible to accurately measure the average flow rate.
Applications of Verabar Flow Meter
VERIS Verabar flowmeters are widely used in power plants, petrochemicals, metallurgy, water treatment, fine chemicals, environmental protection and other industries.
Sino-Inst offers over 10 VERIS Verabar flow meter products. These are differential pressure flow meters, 40% are water meters (like the Insertion Turbine Flow Meter), and 40% are water treatment (like the Annubar flow meter ).
A wide variety of VERIS Verabar flow meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of VERIS Verabar flow meter, located in China. The top supplying country is China (Mainland), which supply 100% of the VERIS Verabar flow meter respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. VERIS Verabar flow meter products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
Request a Quote
Please enable JavaScript in your browser to submit the form
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
Orifice plate flow meter also called orifice flow meter or orifice plate. Orifice plate flow meter is a kind of differential pressure flow meter.
Orifice plate flow meter works together with an orifice plate, differential pressure transmitter, with Differential Pressure Measurement principle. Easy installation. Orifice plate flow meters can be used with gases, liquids, corrosive, and high temperature fluids. Orifice flow meters can measure steam, gas, liquids, and many industrial areas. Applications include steam flow, boiler feedwater, and fluid flow rates in building water lines.
Sino-Inst, Manufacturer for differential pressure flow meters. Including the Orifice plate, Venturi, Annubar, etc. Suitable for liquid, gas, and steam flow measurement. Please contact our sales engineers for technical support!
The structure of the throttling device is easy to copy, simple, firm, stable and reliable in performance, long in service life, and low in price.
Orifice flowmeter calculation adopts international standards and processing
Wide application range, all single-phase flows can be measured, and some mixed-phase flows can also be applied.
The standard throttling device can be put into use without real flow calibration.
The integrated orifice plate is simpler to install, no pressure pipe is needed, and it can be directly connected to a differential pressure transmitter and a pressure transmitter.
It has a wide range of applications, including all single-phase fluids (liquid, gas, steam) and partial mixed-phase flows. The pipe diameter and working conditions (temperature, pressure) of the general production process can be measured;
Orifice Plate Flow Meter Specification
SI-LG integrated orifice flowmeter is a high-range ratio differential pressure flow device. Composed of standard orifice plate and multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter).
It can measure the flow of gas, steam, liquid and natural gas, and is widely used in process control and measurement in petroleum, chemical, metallurgy, electric power, heating, water supply, and other fields.
Execution standard
Design, manufacture, and installation in accordance with international standard ISO5167-1(1991)(national standard GB/T2624-93), British standard BS1042 and other standards
Precision level
(1)Standard orifice plate, standard nozzle: there are many factors that affect the measurement error. If the installation and use meet the relevant provisions of international standard ISO5167-1 (1991), the accuracy level can generally reach level 1 ~1.5.
(2) For non-standard orifice plates (such as double orifice plates, circular missing orifice plates, small orifice plates, etc.). Due to insufficient test data, there is no “standard” to check, so calibration should be conducted after the design and manufacture is completed. (liquid flow is usually calibrated with water. And the air calibrates the gas flow. The level of accuracy (basic error) can be achieved after calibration: level 1 ~1.5, if not calibrated. Only by empirical data calculation, design, accuracy in ±2.5%.
Orifice plates are recommended for clean liquids, gases, and low-velocity stream flows.
Plate thicknesses depend on line size and differential pressure and should be sufficient, to prevent the plate from bending under operating conditions. Orifice plates can be made in accordance with customer drawings as required.
The Orifice meter is very cheap as compared to other types of flow meters.
Less space is required to Install and hence ideal for space-constrained applications
The operational response can be designed with perfection.
Installation direction possibilities: Vertical / Horizontal / Inclined.
Orifice Flow Meter Applications
Natural Gas
Water Treatment Plants
Oil Filtration Plants
Petrochemicals and Refineries
Orifice Plate Orifice flow meter diagramorifice flow meter diagram
Of course, in the water supply or wastewater treatment industry, in addition to orifice flowmeters, electromagnetic flowmeters are also the first consideration for many users in the measurement of water flow. For example, if you need to measure the flow of wastewater in a 2-inch pipe. Then you may refer to: Magnetic Flow Meters Guides.
1. Meter manifold piping should always be installed to enable calibration as well as to protect the differential element against overage.
2. The meter should be installed as close as possible to the orifice fitting.
3. Always slope the manifold lines gently from the orifice fitting to the meter to eliminate any high or low points in the manifold lines.
4. Use condensate chambers or air traps to remove either liquid from a gas system or gas from a liquid system if lows or highs in the manifold piping cannot be avoided.
It is important when pressurizing or depressurizing differential measuring devices to apply or release pressure to or from the high and low meter chambers uniformly, so as not to impose excessive overage.
What is an Orifice Meter?
An orifice meter is a conduit and a restriction to create a pressure drop.
An hourglass is a form of the orifice.
A nozzle, venturi or thin sharp-edged orifice can be used as the flow restriction.
In order to use any of these devices for measurement, it is necessary to empirically calibrate them.
That is, pass a known volume through the meter and note the reading in order to provide a standard for measuring other quantities.
Due to the ease of duplicating and the simple construction, the thin sharp-edged orifice has been adopted as a standard and extensive calibration work has been done, so that it is widely accepted as a standard means of measuring fluids.
Provided the standard mechanics of construction are followed no further calibration is required.
The minimum cross-sectional area of the jet is known as the “vena contract”.
How does an orifice flow meter work?
I guess most people wondered: What is the working principle of orifice meter?
As the fluid approaches the orifice the pressure increases slightly and then drops suddenly as the orifice is passed.
It continues to drop until the “vena contract” is reached, and then gradually increases, until at approximately 5 to 8 diameters downstream, a maximum pressure point is reached, that will be lower than the pressure upstream of the orifice.
The decrease in pressure as the fluid passes thru the orifice, is a result of the increased velocity of the gas passing thru the reduced area of the orifice.
When the velocity decreases as the fluid leaves the orifice the pressure increases, and tends to return to its original level (To level transmitters).
All the pressure loss is not recovered because of friction, and turbulence losses in the stream.
The pressure drop across the orifice increases when the rate of flow increases.
When there is no flow there is no differential.
The differential pressure is proportional to the square of the velocity, it thus follows that if all other factors remain constant, then the differential is proportional to the square of the rate of flow.
Converters for conversion and calculation of flow. Or a calculation tool that requires flow measurement to obtain other measurement parameters. Help users choose the right flow sensor and transmitter!
Venturi flow meter is also called classical venturi, and is used to call venturi meter, standard venturi. It is used to measure the flow of single-phase stable fluid in closed pipelines.
Venturi flow meter is a flow measurement method based on the principle of differential pressure. Commonly used to measure the flow of fluids such as air, natural gas, coal gas, and water. In the standard throttling device, the upstream and downstream straight pipe sections required by it are short. The lasting pressure loss is small, the performance is stable, and the maintenance is convenient.
What is the difference between Venturimeter and orifice meter?
The difference between venturi flowmeter and orifice flowmeter:
Orifice flow meters and Venturi flow meters are very different in many aspects.
In order to reduce the loss of the kinetic energy of the fluid mechanics flowing through the saving components, the Venturi flowmeter uses each section of tapered and divergent tubes to replace the orifice.
The orifice flowmeter is equipped with an interchangeable orifice plate with a small circular hole on the upper side, which is much smaller than the diameter of the pipe. The orifice plate is placed on the side of the fluid mechanics pipe.
1.The orifice flowmeter is similar to the Venturi flowmeter in the working principle. But some of the main differences are: the orifice plate can be easily replaced to accommodate a wide range of different flow rates.
The throat diameter of the venturi is fixed, so that the measured flow rate range is limited by the actual pressure difference.
Due to the vortex on the downstream side of the orifice, the permanent loss of the orifice flowmeter is very large.
The structure and shape of the Venturi flowmeter can avoid the formation of vortices, which can greatly reduce permanent losses.
2.The energy loss of Venturi flowmeter in measuring flow is much smaller than that of orifice flowmeter. However, because the venturi flowmeter is more time-consuming in manufacturing and processing than the orifice flowmeter, and the price is high, the orifice flowmeter has the least trouble and the lowest cost during pipeline installation.
3.In terms of fluid measurement, Venturi flowmeters are generally used for low-velocity gas flow measurement.
The flow coefficient of the orifice plate in the orifice flowmeter is significantly affected by the fluid disturbance, and this disturbance comes from the influence of the valves, elbows and other pipe fittings installed upstream of the orifice plate. The value of its discharge coefficient is less affected by downstream disturbances. Generally, this kind of flowmeter should be installed at a distance of 50 times and 10 times the pipe diameter from the upstream and downstream disturbance components, respectively. Obviously the required distance is related to the nature of the disturbance.
Therefore, when measuring with an orifice flowmeter, the orifice flowmeter must be installed correctly according to the disturbance of the fluid.
The above is a detailed introduction to the question of “What is the difference between a venturi flowmeter and an orifice flowmeter”, I hope to help everyone. If you have any other questions about this issue, please click Online Consultation and consult online customer service.
Orifice Meter is a liquid and gas flow measuring instrument. It is mainly used in high temperature and high pressure measurement conditions. Orifice Meter has the characteristics of high temperature resistance, the temperature can reach 700 degrees, and the pressure is 30MPa. In the field of high temperature and high pressure measurement, Orifice Meter is Use more differential pressure flowmeters.
What is the calibration accuracy of the orifice flowmeter? The orifice flowmeter is a flow measuring instrument. The accuracy of the orifice flowmeter is within the range of ±0.5% to 1.5%. The orifice flowmeter has the characteristics of high temperature and high pressure. It is mainly used to measure steam and hot air. , Measurement conditions of heat transfer oil.
DP transmitters are Differential Pressure Transmitters. DP transmitter measures the pressure difference between the gas or liquid at both ends of the transmitter. Output 4~20mA, 0~5V. Used for liquid level, density and pressure of liquid, gas and steam.
DP transmitters are different from pressure transmitters as they have 2 pressure interfaces. With flanges, capillaries, valve, brackets, throttle devices. Differential pressure transmitters are used to measure the level, density, and flow of liquids, gases, and vapors. Then convert it into 4–20mADC current signal output.
What is Digital Flow Meter for Argon Gas? Digital flow meter for argon gas refers to a flow meter that can be used for detection, display, transmission, and signal output…
What is a BTU Meter? A BTU meter is a special instrument that measures the thermal energy transferred in a heating or cooling system. BTU meters are also known as…
What is PD flow meter? PD flow meters (positive displacement flow meters) are the only flow measurement technology that directly measures the volume of fluid passing through the flow meter.Rotating…
Digital Fuel Flow Meter is a flow meter dedicated to measuring fuel, diesel, gasoline, and petroleum. Digital Fuel Flow Meter generally has a digital display or signal output. Such as…
Fuel Flow Meter for Boat refers to a flow meter dedicated to measuring marine fuel. There are many types of marine fuel oil. Mainly include light diesel, heavy diesel, fuel…
Water flow measurement is common in both industry and life. You may often hear about the use of electromagnetic flowmeters to measure wastewater. The clamp-on ultrasonic flowmeter measures large water…
Mechanical water flow meters refer to a type of flow meter suitable for clean water processes or applications. The working principle of a mechanical water flow meter is to measure…
A flow totalizer meter is sometimes referred to as a flow meter or flow totalizer. flow totalizer meter displays the flow rate from either an analog or pulse output flow…
Flow Meter Types There are many types of flow meters. Basically, there are the following types of flow meters Why are there so many types of flow meters? This starts…
What is Strap on Ultrasonic Flow Meters? Strap on Ultrasonic Flow Meter is also often called Clamp On Type Flow Meter. The unique feature of Strap on Ultrasonic Flow Meter…
What is 4-20ma Flow Meter? 4-20mA Flow Meters are those flow meters with 4-20mA current signal output function. The signal current of general instruments is 4-20mA. This means that the…
Sino-Inst offers 12 orifice plate flow meter products. About 90% of these are flow meters.
A wide variety of orifice flow meter options are available to you, such as brass, carbon steel. You can also choose from free samples.
Sino-Inst is an orifice plate flow meter supplier. Orifice plate flow meter products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, including 375 with ISO9001, ISO14001, and Other certification.
Request a Quote
Please enable JavaScript in your browser to submit the form
Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.
