Temperature Transmitters (4-20mA), also known as thermocouple temperature transmitter, or thermal resistance temperature transmitter, are sensors with an electrical transmission output.
From wall mounted to PC programmable, to LCD Display, to intrinsically safe models,
there are a variety of transmitters to choose from.
Sino-Instrument’s economical devices provide accuracy and reliability at the lowest possible cost.
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.
Gauge Pressure Sensor (GP) is a pressure transmitter for Gauge pressure measurement. SI-3151GP Capacitive Gauge Pressure Transducers use capacitive sensing elements to measure gauge pressure.
Gauge pressure (GP) transmitters compare process pressure with local ambient air pressure. Gauge pressure transmitters have ports for a real-time sampling of ambient air pressure. There are different types of pressure measurement. Such as gauge pressure, absolute and differential pressure measurement. Among them, the gauge pressure measurement is performed using a gauge pressure transmitter. These devices are designed to measure pressure relative to ambient atmospheric pressure. The output of the gauge pressure sensor will vary depending on the atmosphere or different altitudes. Measurements above ambient pressure are expressed as positive numbers. And negative numbers indicate measurements below ambient pressure. At Sino-Inst, we offer gauge pressure transmitters for a variety of industrial applications.
Sino-Inst offers a variety of Gauge Pressure Transmitter for industrial pressure measurement. If you have any questions, please contact our sales engineers.
TIIS flameproof (Exd IICT4) KOSHA flameproof FM explosion proof, intrinsic safe and Nonincendive ATEX/NEPSI/IECEx flameproof, intrinsic safe and Type n INMETRO flameproof
4 to 20 mA DC (SFN communication) 4 to 20 mA DC (HART® communication) MODBUS-485 signal
Process connections
Rc 1/2 or 1/2 NPT internal thread
Safety certification
Safety Integrity Level (SIL) 2 certification
By selecting from a large range of materials, we are able to customize the transmitter and supplyremote seals.
We temperature compensate for the whole assembly to maintain the highest level of performance.
Selecting from 316SS, Hastelloy, Monel, Tantalum, Gold, and Ceramic.
We can custom build a transmitter to our own high standards, or to your individual specifications.
To provide high flexibility, remote seals can be fitted to any of the SI series of transmitters.
For further information, please Contact us.
Gauge Pressure Sensor Applications
Pressure transmittersare used to measure level, density, and pressure of liquids, gases or vapors. And then converted to a 4-20 mA DC signal output. The SI-3151 GP intelligent pressure transmitter can communicate with the HART Communicator.
There are many types of pressure sensors, which are widely used in:
Water plants. Oil refineries. Sewage treatment plants. Building materials. Light industry. Machinery and other industrial fields.
To achieve the measurement of liquid, gas, steam pressure.
However, different pressure sensors are required for different applications.
The pressure sensor can be used to measure some mechanical physical quantities such as: Displacement. Vibration. Angular velocity and acceleration.
It is also widely used in the measurement of thermal engineering parameters such as: Pressure. Differential pressure. Liquid pressure. And content of ingredients.
Gauge Pressure Sensor working principle
What is gauge pressure?
Gauge pressure, also known as ‘relative pressure’ or ‘vented gauge pressure’. Gauge pressure is the measurement of pressure relative to atmospheric or barometric pressure.Gauge pressure sensor has the back of the sensing element open (or ‘vented’), to provide a reference to atmospheric. More about the Difference between absolute, gage and differential pressure.
How does a gauge pressure sensor work?
Gauge Pressure Transmitter / transducer (GP) is a pressure transmitter for Gauge pressure measurement. According to the measurement principle, it can be divided into: capacitive and diffused silicon.
Capacitive pressure sensor (capacitive type pressure transducer) is a pressure sensor that uses a capacitive sensing element to convert the measured pressure into an electrical output with a certain relationship. It is characterized by low input energy, high dynamic response, small natural effects, and good environmental adaptability. It generally uses a round metal film or metal-plated film as an electrode of the capacitor. When the membrane is deformed by pressure, the capacitance formed between the membrane and the fixed electrode changes. Through the measuring circuit, the electrical signal with a certain relationship with the voltage can be output. Capacitive pressure sensor is a capacitive sensor with variable pole distance. It can be divided into single capacitive pressure sensor and differential capacitive pressure sensor.
SMT3151 TGP-Gauge Pressure Transmitter / Transducer is a diffusion silicon pressure transmitter. The working principle of the diffused silicon pressure sensor is based on the piezoresistive effect. Using the principle of piezoresistive effect, the pressure of the measured medium directly acts on the diaphragm of the sensor (stainless steel or ceramic). Make the diaphragm produce a slight displacement proportional to the pressure of the medium. To change the resistance value of the sensor. Use electronic circuits to detect this change. And convert and output a standard measurement signal corresponding to this pressure.
3151 gage pressure transmitter
Gauge vs Absolute Pressure Sensor
In terms of pressure type, pressure sensors can be divided into gauge pressure, absolute pressure, and negative pressure.
Absolute pressure: Absolute pressure for short, is the pressure calculated from the absolute zero pressure or the vacuum starting point.
Gage pressure: refers to the pressure calculated from the atmospheric pressure of a specific place at a specific time as a starting point. Atmospheric pressure at the same location will change slightly.
Vacuum: When the measured absolute pressure is less than atmospheric pressure, the difference between the measured absolute pressure and absolute vacuum.
Negative pressure: when the measured absolute pressure is less than atmospheric pressure, the difference between the current atmospheric pressure and the measured absolute pressure, referred to as negative pressure.
The formula for the relationship between absolute pressure, gauge pressure, and atmospheric pressure: absolute pressure = gauge pressure + atmospheric pressure.
Therefore, when selecting a pressure sensor, it is generally necessary to clearly indicate the pressure type of the pressure sensor,
Gauge vs Absolute Pressure Sensor
Gauge pressure and absolute pressure are based on different measurement reference points. The reference point for gauge pressure measurement is the local atmospheric pressure. Absolute pressure is the absolute vacuum zero. Absolute pressure sensors cannot replace gauge pressure sensors.
In layman’s terms. When your measured object uses atmospheric pressure as the reference point, and only has the inflation action, select the gauge pressure type. When your measured object takes absolute vacuum zero as the reference point, and there are inflation and inhalation actions, it is often the absolute pressure type.
The two principles of gauge pressure and absolute pressure sensor are different! Cannot be used instead!
Updated April 2026 — By Sino-Inst Engineering Team A pressure transmitter converts the mechanical force of fluid…
Sino-Instrument Gauge Pressure Transmitters, made in China, are high-performance cost-effective devices, used where long term accuracy and reliability is a priority.
SI-3151GP Advanced Transmitter Gauge Pressure Transmitters, are used to measure the pressure of gases, liquids, and steam, as well as to measure tank pressure and fluid levels. Sino-Instrument 1151 Gauge Pressure Transmitters are high-performance cost effective devices used, where long term accuracy and reliability is a priority. We also offer Gauge Pressure Transmitter SMT3151 TGP, forthe process, oil and gas industry.
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.
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.
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!
Less head loss than an orifice or nozzle meter, due to the streamlined design
Ideal for clear gas, liquid or steam applications
Available in many materials and end arrangements
Can be equipped with fittings to accept secondary instrumentation packages
The classic venturi tube is simple, durable and stable in performance.
Classic venturi pressure loss is small, saving the energy needed for fluid delivery.
Classic venturi tube in the range of 50 ~ 1200.
No real-flow calibration is required.
Beyond this range, you can refer to the design and manufacture.
When high precision is required, real-time calibration is possible.
The body is installed in long size, and it is not convenient for transportation and installation for large-diameter instruments.
What is a venturi flow meter?
Venturi flowmeter, also known as venturi tube flow meter. It is a commonly used device for measuring the flow of pressurized pipelines.
It is a differential pressure flowmeter, and is commonly used to measure the flow of air, natural gas, gas, water, and other fluids.
It consists of a “contraction section”, a “throat” and a “diffusion section”, which are installed on the pipe where the flow rate needs to be measured.
The classic venturi tube is designed and manufactured, according to China GB/T2624-93, and is verified according to the verification procedure JJG640-94.
In the standard throttling device, it requires the shortest upstream and downstream straight pipes, the lowest pressure loss, stable performance, and convenient maintenance.
Because of its accurate calculation and low energy consumption, it has been widely used in petroleum, chemical, electric power, and metallurgy industries.
Venturi flow meter parameters:
1. Nominal diameter: 50mm≤DN≤1200mm (more than this range needs to be calibrated)
The axial section of the classic venturi is shown in the figure above.
It is composed of an inlet cylinder section A, a conical contraction section B, a cylindrical throat C, and a conical diffusion section E.
The diameter of the cylinder section A is D, the length is equal to D. The contraction section B is conical and has an angle of 21 ° ± 1 °. The throat C is a cylindrical shape of diameter d, the length of which is equal to d;
E is conical and has a diffusion angle of 7° to 15°.
The constricted section of the classic venturi is divided into three forms: a coarse cast shrinkage section, a machined shrinkage section, and a coarse welded iron plate shrinkage section.
The upper-pressure port and the throat pressure port of the classic venturi, are made into several (not less than four) separate tube wall pressure ports.
And several separate tube walls are pressure-connected by a pressure-equalizing ring.
When d≥33.3mm, the diameter of the throat pressure port is 4~10mm, the diameter of the upstream pressure port should be no more than 0.1D. When d≤33.3mm, the diameter of the throat pressure port is 0.1d~0.13d. The diameter of the upstream pressure tap is 0.1d to 0.1D.
The Venturi flow meter produces a differential pressure, to calculate the flow rate through a pipe.
The meter works by measuring the pressure of fluid before and after it passes through a narrow tube; the pressure difference indicates the volumetric rate of flow.
The basic measurement principle of the new generation, of differential pressure flow measuring instruments, is the flow measurement method based on the law of conservation of energy – the primary effort equation and the flow continuity equation.
The inner venturi consists of a circular measuring tube, and a special core placed in the measuring tube and coaxial with the measuring tube.
The outer surface of the special core has a geometric profile, similar to the inner surface of a classic venturi. And forms a different diameter annular flow gap with the inner surface of the measuring tube.
How does a Venturi meter work?
The working of venturi meter is based on the principle of Bernoulli’s equation.
Bernoulli’s Statement:
It states that in a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant.
The total energy consists of pressure energy, kinetic energy, and potential energy or datum energy.
Mathematically:
Here all the energies are taken per unit weight of the fluid.
The Bernoulli’s equation for the fluid passing through the section 1 and 2 are given by
Since its development, venturi products have been successfully applied to the measurement of high-humidity natural gas, low-pressure dirty biogas, coke oven gas, gas, steam, hot water, high-temperature hot kerosene, etc., And the practical application range is rapidly expanding.
Besides, the venturi tube has a unique measurement advantage, for measuring conditions such as long straight pipe installation conditions, special high temperature, high pressure, strong corrosive and dirty media, and non-single phase flow measurement.
Of course, in the sewage and wastewater treatment industry, in addition to venturi flowmeters, electromagnetic flowmeters are also the first consideration for many users. For example, if you need to measure the flow of wastewater in a 2-inch pipe. Then you can refer to: Magnetic Flow Meters Guides.
The orifice flow meter is a flowmeter with a variable cross-sectional pressure difference.
The velocity at the vein is the largest, the pressure of the fluid is minimized, the structure is simple, but the resistance loss is large.
The Venturi flow meter is also a flowmeter with a variable cross-section pressure difference.
On the basis of the orifice flowmeter, the orifice plate is replaced by a lengthy and gradually expanding short tube, and the structure is simple, the resistance loss is small, but the cost is high.
The orifice flowmeter is similar to the venturi flowmeter, in terms of working principle. But some of the main differences are that the orifice plate can be easily replaced. Adapting to a wide range of different flow rates, while the venturi’s throat diameter is fixed.
The measured flow rate range is limited by the actual pressure difference.
Due to the vortex on the downstream side of the orifice plate, the permanent loss of the orifice flowmeter is large. And the structural shape of the venturi flowmeter can avoid the formation of vortices.
Thus, permanent losses can be greatly reduced.
Venturi flowmeters consume much less energy in measuring flow than orifice flowmeters.
But because venturi flowmeters are more time consuming and expensive than orifice flowmeters, in manufacturing and processing.
Orifice flowmeters is the least troublesome when installing the pipeline and the lowest cost.
In fluid measurement, venturi flowmeters are typically used for the measurement of gas flow at low flow rates.
The orifice flow coefficient in orifice flowmeters is significantly affected by fluid disturbances, which are generated upstream of the orifice plate.
The influence of valves, elbows and other fittings.
The value of its flow coefficient is less affected by downstream disturbances.
Typically, such flow meters should be installed at 50 and 10 pipes diameters, from the upstream and downstream disturbance components, respectively.
It is obvious that the required distance is related to the nature of the disturbance.
Therefore, when measuring with an orifice flowmeter, the orifice flowmeter must be properly installed according to the disturbance of the fluid.
Through the specific analysis and comparison of the orifice flowmeter and the venturi flowmeter, the advantages and disadvantages between them can be seen. And the user is reminded to analyze and compare more when selecting the flowmeter.
In this way, you can choose the measurement tools you need.
To meet the different measurement requirements of different field conditions, Pitot tube flow sensors are divided into standard and functional structures.
The standard type is suitable for the measurement of pure gas, steam, liquid and various chemical materials and liquids. The function is suitable for the working conditions of easy blockage, adhesion, high impurity content, and solid-liquid mixed flow such as various coal gas in the metallurgical industry. Measurement of gas, steam and various liquids.
Smart Pitoba flowmeter is easy to scale and easy to install. Just make a hole in the pipeline. Insert the Smart Pitoba into the center of the pipeline. Connect it with the pipeline by welding or flange.
The difference between Pitot tube vs venturi meter, in simple terms:
Pitto is taking advantage of the same point. The only difference between the total pressure and the static pressure is the dynamic pressure V2/2g to obtain the speed and flow.
The Venturi nozzle is used to pass through two points of variable diameter. The measured pressure difference is the dynamic pressure increase (or static pressure decrease). List the continuity equation with the product of diameter and velocity. Then find the speed and flow.
Yes, Venturi tubes can measure volume flow. To be precise, the Venturi tube measures differential pressure. The differential pressure signal is transmitted to the integrator or the monitoring system, and the compensation operation is performed. is further converted into traffic. Most customers monitor volume flow.
The Venturi effect, also known as the Venturi effect. This phenomenon is named after its discoverer, the Italian physicist Giovanni Battista Venturi.
This effect is manifested when the restricted flow passes through the narrowed flow section. The flow velocity of the fluid increases, and the flow velocity is inversely proportional to the flow section.
And according to Bernoulli’s law, the increase of flow velocity is accompanied by the decrease of fluid pressure. That is, the common Venturi phenomenon.
In layman’s terms, this effect means that a low pressure will be generated near a fluid flowing at a high speed, resulting in adsorption. Using this effect, a venturi can be made.
Venturi Flow Meter is a device for measuring the flow of a pressure pipeline, which belongs to a differential pressure flowmeter. It is generally installed on the pipeline that needs to measure the flow, and can measure the flow of air, natural gas, gas, water and other fluids. Venturi Flow Meter is widely used in many energy and power industries such as gas, electricity, cement, etc. due to its simple structure, wide range of applicable working conditions, and easy real-time monitoring.
When the fluid flows through the orifice plate of the orifice flow instrument device, the cross-sectional area decreases and the velocity increases. The corresponding pressure decreases. And the degree of reduction is proportional to the fluid velocity in the flow state.
Therefore, the flow rate can be calculated by detecting the pressure difference, and then the flow rate can be calculated.
Under normal circumstances, if we want to measure differential pressure, we can directly purchase a differential pressure transmitter.
However, in fluid pipelines. The differential pressure of the fluid cannot be measured directly. A throttle is required.
When the differential pressure flowmeter measures the fluid flow parameters, it is based on the differential pressure generated by the throttling part. When the fluid passes through the throttling part, because the pipe section becomes narrower. Therefore, the flow velocity of the fluid in the pipeline increases, and the kinetic energy of the fluid also increases. increased accordingly.
Ideally, when the fluid velocity increases, part of the static pressure will be converted into fluid kinetic energy. The static pressure value of the fluid will decrease accordingly.
At this time, a pressure difference is generated, and there is a certain functional relationship between the pressure difference and the fluid flow. Only by measuring the pressure difference, the flow value of the fluid can be determined.
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Sino-Inst, China, supplies all kinds of Flow Meters. Provide professional flow measurement solutions.
A wide variety of Annubar flow meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of flow measurement instrumentation, located in China.
The top supplying country is China (Mainland), which supply 100% of the turbine flow meter respectively. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
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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.
Annubar flow meter also known as flute-shaped constant velocity tube flow meter and Toba tube flow meter. Annubar flow meter is a differential pressure flow meter.
Annubar Flow Meter is a no-equal solution with a patented, averaging pitot tube that delivers superior measurement accuracy over a wide flow range. This flow meter can measure multiple variables and is engineered with an integrated thermowell for temperature measurement. Its patented T-shaped sensor is capable of obtaining measurements via a single pipe penetration while maintaining a small profile in the pipe to reduce permanent pressure loss and increase energy savings.
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 output of the Annubar flowmeter is a differential pressure signal.
It can be used with instruments that measure differential pressure to accurately measure a variety of liquids, gases and vapors (superheated steam and saturated steam) in the He-shaped pipe and rectangular pipe.
The size of the pipe to be tested ranges from 20MM to 5000MM. Annubar has been successfully used in the chemical industry, (including the nuclear industry) chemical industry, petrochemical industry and metal smelting industry.
It is suitable for:
Gas delivery and liquid delivery
Energy research, steam boiler heat rate, pump efficiency.
Gas compressor efficiency and fuel consumption
Process control: input and output, ratio, balance; cooling water or air, steam heating.
Feeding in the chemical industry
The Use and Characteristics of the Annubar flowmeter
The Annubar flowmeter is an ideal substitute for differential pressure fow measurement. Because of its simple installation, low-pressure loss, high strength, no wear and no leakage.
It can be widely used in industrial and mining enterprises to measure the flow of blast furnace gas, compressed air, steam and other liquids and gases.
1. The unique internal secondary average structure provides high precision (±1% reading), and high repeatability (±0.1%).
2. The outer impact tube of the Annubar flowmeter, is processed by a single piece of material without welding.
It has the highest strength, compared with similar products welded by the double-body structure. And it is also convenient to use high-temperature resistance and corrosion resistant material.
Working principle of Annubar flow meter
Annubar flow meter working principle
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, is decisive for the accuracy and performance of the uniform velocity probe.
The Annubar average velocity probe detects the average differential pressure, produced by the average velocity of the fluid.
The Annubar average velocity probe has multiple pairs of pressure tapping holes, arranged in a certain standard in the high and low-pressure zones, making it possible to accurately measure the average flow rate.
Annubar Flow Meter Calculation
The flow calculation formula of the uniform velocity tube flowmeter is derived from the Bernoulli equation and the continuity equation:
Qv=α﹒ ε﹒ (π/4)﹒ D2﹒ (2P/ρ1)0.5 Qm=α﹒ ε﹒ (π/4)﹒ D2﹒ (2?P﹒ρ1)0.5 Among them: Qv: volume flow Qm: mass flow α: Sensor structure coefficient △P: Differential pressure value ε: fluid expansion coefficient ρ: Density under fluid conditions ε: fluid expansion coefficient For incompressible fluid ε=1, for compressible body ε<1. If D, △P, and ρ1 in the formula all use SI units, the unit of QV is M3∕S. The unit of Qm is ㎏∕S.
The annubar flowmeter is a commonly used type of flowmeter. It is a new type of differential pressure flow detection component, developed based on the principle of pitot tube velocity measurement.
It has the advantages of stable performance, flexible use and high reliability.
1. Connect the signal cable and power cable;
2, open the import and export valves, the inlet and outlet valves must be consistent
3. Open the stainless steel three-valve balance valve, slowly open the high-low pressure end of the orifice plate, and close the stainless steel three-valve balance valve, after the fluid passes through the flowmeter.
(1) The straight pipe sections before and after the throttle piece must be straight, and must not be visible to the naked eye.
(2) The straight pipe section used for installing the throttle piece should be smooth. If it is not smooth, the flow coefficient should be multiplied by the roughness correction sparse.
(3) In order to ensure the flow of the fluid, a fully developed turbulent velocity distribution is formed in the 1D before the throttle. And the distribution is made into a uniform axisymmetric shape, so:
1). The straight pipe section must be round. And the roundness of the 2D range of the throttle is very strict and has a certain roundness index.
Specific measurement method:
(A) On the OD, D/2, D, 2D 4 vertical pipe sections of the throttle, measure the inner diameter of the four pipes, at least equal to each other with an equal angular distance, and take the average value D.
The difference between the measured value of internal diameter, and the average value shall not exceed ±0.3%.
(B) After the throttle element, 8 inner diameter single measured values are measured, by the above method at the OD and 2D positions. And any single measured value is compared with D. And the large deviation of zui must not exceed ±2%.
2). Before and after the throttle element, a straight pipe section of sufficient length is required.
The length of the straight pipe section which is long enough. And the form of the local resistance part. Before the throttle element are related to the diameter ratio β.
(4) The length of the straight pipe section between the upstream side of the throttle member, the resistance member and the second resistance member may be 1/2 of the listed value. According to the form of the second resistance member, and β = 0.7 (regardless of the actual β value)
(5) When the upstream side of the throttle member is an open space, or a large container with a diameter ≥ 2D, the open space or the straight pipe length, between the large container and the throttle member shall not be less than 30D (15D).
If there are other local resistance members, between the throttle member and the open space or the large container. The open space is from the open space to the length of the small straight pipe section 1 provided, between the throttle member and the local resistance member.
The total length of the straight pipe section between the throttle pieces shall not be less than 30D (15D).
Annubar flow meter is sometimes referred to as Averaging pilots and contains multiple pressure tappings to ‘average’ the flow; this is to try to compensate for a non-ideal flow profile. The averaging pitot tube is inserted across the pipe as shown below. One side of the bar has pressure taps facing the flowing fluid that are coupled into an “averaging” chamber that measures the total (i.e. static + dynamic) pressure of the fluid.
There are numerous types of flow meters depending upon the application, the specific fluid, and the construction, including materials, of the flow meter. The 5 basic classifications of flow meters include: 1. Differential Pressure Flow Meters Differential pressure flow meters measure the differential pressure across an orifice where flow is directly related to the square root of the differential pressure produced. There are also primary and secondary elements in differential flow meters. The primary element produces a change in kinetic energy using either flow nozzle, pitot tube, orifice plate, or venturi flow meters. The secondary element measures the differential pressure and provides the signal. Differential pressure meters represent around 1/5 of all flowmeters around the world. They are commonly used in the oil & gas industry, along with HVAC, beverage, water, pharma, mining, paper, and chemical applications.
Extended reading: What Is A Venturi Flow Meter? 2. Positive Displacement Flow Meters Positive displacement (PD) flow meters measure the volume filled with fluid, deliver it ahead and fill it again, which calculates the amount of fluid transferred. It measures the actual flow of any fluid while all other types of flow meters measure some other parameter and convert the values into flowrate. In PD flow meters, the output is directly related to the volume passing through the flow meter. PD flowmeters include piston meters, oval-gear meters, nutating disk meters, rotary vane type meters, etc. Positive displacement flow meters are known for their accuracy. They are commonly used in the transfer of oils and fluids, like gasoline, hydraulic fluids as well as in-home use for water and gas applications. 3. Velocity Flow Meters Velocity meters measure the velocity of the stream to calculate the volumetric flow rate. These are less sensitive when the Reynolds number of fluid is higher than 10000. Velocity flow meters include turbine, paddlewheel, vortex shedding, electromagnetic, and sonic/ultrasonic flow meters. 4. Mass Flow Meters Mass flow meters are more effective in mass-related processes as they measure the force that results from the acceleration of the mass. More specifically, the force is measured as the mass moving per unit of time, instead of the volume per unit of time. Mass flow meters include Coriolis mass meters and thermal dispersion meters. Typical applications for mass flow meters are tied to chemical processes. In addition to the chemical and gas industries, typical industries using mass meters include pharma, power, mining, and wastewater. 5. Open Channel Flow Meters Measurement of liquid in open channels includes v-notch, weirs, and flumes. These dam-like structures, or overflows, allow for a limited or concentrated free-flow of liquids based on the unique shape and size of the structure. This type of flow meter allows for a reading of the flow rate to be calculated. Common applications of open channel meters include free-flowing liquids like streams, rivers, irrigation channels, and sewer/wastewater systems.
The biggest difference between an annubar and a pitot tube is that an annubar takes multiple samples across a section of a pipe or duct. In this way, the annubar averages the differential pressures encountered accounting for variations in flow across the section. A pitot tube will give a similar reading if the tip is located at a point in the pipe cross section where the flowing velocity is close to the average velocity.
A wide variety of Annubar Flow Meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Annubar Flow Meter, located in China. The top supplying country is China (Mainland), which supply 100% of the Annubar Flow Meter respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Annubar 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.
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.
Handheld ultrasonic flow meter realizes the non-contact measurement of liquid flow. Also often referred to as Portable Clamp-On Ultrasonic Flow Meter for Liquids.
Handheld Ultrasonic Flow Meter ( Model:2000H) has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.
Handheld Ultrasonic Flow Meter Reference price: USD 470.00/pc
Sino-Inst offers a variety of Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.
Handheld Ultrasonic Flow Meter is a commonly used clamp-on ultrasonic flow meter.
Clamp-on ultrasonic flow meter mainly refers to the installation form of the ultrasonic sensor. The sensor clamp is fixed outside the pipe.
Clamp-on ultrasonic flow meters can be handheld, wall-mounted, and portable with printing functions depending on the host. You can select different hosts according to your measurement needs.
Typical Applications of Handheld Ultrasonic Flow Meter
The handheld ultrasonic flow meter is mainly used for flow measurement of industrial pipeline fluids, and is widely used in environmental protection, petrochemical, metallurgy, paper-making, food, pharmaceutical and other industries.
The SI-2000H ultrasonic flow meter is ideal for flow testing during test and balance.
It is also useful for temporary flow monitoring, in existing systems to establish baseline demand data.
Water (hot water, cooling water, potable water, seawater, etc.)
Pipeline leak detection, inspection, tracking, and collection
Of course, if you are allowed to install a pipe segment flowmeter in your measurement pipeline, you may consider the use of an electromagnetic flowmeter. Electromagnetic flowmeters will provide more accurate measurements.
Ultrasonic flowmeter is especially suitable for measuring large-diameter liquid pipelines because of its measuring principle. It has a large number of applications in urban water supply and sewage treatment industries. And the measurement results are very good.
Water is often used as circulating water in industrial production. That is, the water that can be recycled as the carrier of heat in the production process of the enterprise. The beginning is a circulating pool with a cooling system, and the end is the heat exchange equipment of the production workshop.
There are many types and quantities of heat exchange equipment in biochemical companies, so the circulating water pipelines are complicated. If a flow meter is installed on each circulating water pipeline, it will be a considerable expense.
Therefore, most production companies do not install flow meters for circulating water pipes in the initial stage of design to reduce investment costs. However, in order to grasp the operating efficiency of all heat exchange equipment in the production process, it is necessary to detect the flow rate of the circulation in the pipeline. .
An ultrasonic flowmeter can be used as a standard meter to transmit the value. It not only protects water resources rationally and scientifically, but also quantifies the paid use of water resources to a great extent. At the same time, it also protects the interests of both parties who use the water and reduces the cost of enterprise inspection. This makes periodic verification of large-caliber water flow meters a reality.
The measurement accuracy of the ultrasonic flowmeter is very high. Almost no interference from various parameters of the measured medium. In particular, it can solve the flow measurement problems of strong corrosive, non-conductive, radioactive and flammable and explosive media that other instruments cannot. So what causes the inaccurate measurement of the ultrasonic flowmeter? The following are the reasons for the inaccurate measurement: The influence of pipeline parameter equipment on the accuracy of ultrasonic flowmeter measurement. The influence of upstream and downstream straight pipes on the accuracy of ultrasonic flowmeter measurement. The influence of couplant on measurement accuracy. The influence of the installation position of the ultrasonic flowmeter transducer on the measurement accuracy.
Common types of ultrasonic flow meters ①According to the measurement principle. Ultrasonic flowmeters are now the most commonly used methods for measuring flow rates are the propagation velocity difference method ultrasonic flowmeter and the Doppler frequency shift method ultrasonic flowmeter. The propagation velocity difference method can be divided into three types: time difference method, phase difference method and acoustic cycle frequency difference. ②According to the installation method of the transducer. There are two types of ultrasonic flowmeters: fixed ultrasonic flowmeter and portable ultrasonic flowmeter. The transducer installation methods of the fixed ultrasonic flowmeter can be divided into: A tube-segment ultrasonic flowmeter integrating transducer and measuring tube; The external clamp ultrasonic flowmeter with the transducer clamped on the outer wall of the measuring tube; Plug-in ultrasonic flowmeter in which the transducer passes through the outer wall of the pipe and directly contacts the medium; The transducer is attached to the inner wall of the large pipeline ultrasonic flowmeter. ③According to the channel of propagation. Ultrasonic flow meters can be divided into single-channel ultrasonic flow meters and multi-channel ultrasonic flow meters. Among them, multi-channel can be divided into two-channel ultrasonic flowmeter, ultrasonic flowmeter, four-channel and eight-channel ultrasonic flowmeter. Extended Reading: Inline Ultrasonic Flow Meter
Ultrasonic flowmeters use sound waves to determine the velocity of a fluid flowing in a pipe. At no flow conditions, the frequencies of an ultrasonic wave transmitted into a pipe, and its reflections from the fluid are the same. Under flowing conditions, the frequency of the reflected wave is different, due to the Doppler effect. When the fluid moves faster, the frequency shift increases linearly. The transmitter processes signals from the transmitted wave, and its reflections to determine the flow rate. Extended reading: Ultrasonic flow detectors types
Portable Ultrasonic Flow Meter is a handheld ultrasonic flow meter. The clamp-on sensor is used to measure liquid flow in industrial pipelines.
The portable ultrasonic flowmeter uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.
Generally speaking, mass flow meters are relatively accurate. Of course, the accuracy of the flowmeter still depends on the site conditions. If the measurement of temperature and pressure is not very difficult, the accuracy of the flowmeter must be relatively high. In addition, to ensure the accuracy of the flowmeter, correct installation and use are also very important.
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Sino-Inst, Manufacuturer for Handheld Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 15—6000mm. It can measure even liquids such as water, sea water, oil, and slurry.
Sino-Inst’s Handheld Ultrasonic Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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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.
Portable Ultrasonic Flow Meter is a handheld ultrasonic flow meter. The clamp-on sensor is used to measure liquid flow in industrial pipelines.
The portable ultrasonic flowmeter ( Model: 3000H) uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.
Other forms of application of ultrasonic flowmeter:
The externally clamped ultrasonic flowmeter can realize non-contact flow measurement. Even if it is a plug-in or internally attached ultrasonic flowmeter, the pressure loss is almost very low, and it is convenient and economical to measure flow.
The ultrasonic flowmeter can measure water, gas, oil and various media, and it has a wide range of applications.
The manufacturing cost of ultrasonic flowmeter has almost nothing to do with the caliber. The price is reasonable on the large diameter flow measuring stone. Comprehensive competitive advantage with easy installation and use
Portable ultrasonic flow meters can be used to measure flow in pipelines with different pipe diameters and different materials. Used as a standard table for online calibration, comparison or period verification.
Ultrasonic flowmeter has the convenience of inverse source based on two basic physical quantities of length and time. It can be expected that flow meters that surpass other principles will become flow standards or carriers of flow standards.
Ultrasonic flowmeter has extremely low power consumption and long battery power supply time. Advanced intelligent host is easy to carry out network wireless communication, and its application prospects are broader.
Open the top cover of the transmitter and you can see the wiring ports on the power board, from left to right, in order:
Downstream sensor interface (Down Stream), upstream sensor interface (Up Stream), power switch, 4-20mA output interface, charger port, specific wiring, please refer to the following figure:
Common faults and treatment in the use of ultrasonic flowmeter
Ultrasonic flowmeter is a non-contact instrument. It can not only measure the medium flow of large pipe diameter, but also measure the medium that is difficult to contact and observe. The measurement accuracy is very high, and it is rarely affected by various parameters of the test medium. In particular, it can solve the flow measurement problems of strong corrosive, vision, radioactivity and flammable and explosive media that other instruments cannot do.
Common faults and treatment in the use of ultrasonic flowmeter
Failure phenomenon: The instantaneous flowmeter fluctuates greatly. ⑴ Cause of failure: large fluctuations in signal strength; large fluctuations in the measured fluid itself. ⑵Processing method: adjust the probe position and increase the signal strength (maintain above 3%). Ensure the signal strength is stable. If the fluid fluctuates greatly, the position is not good. Re-select the points to ensure the working conditions of the first 10D and the 5D.
Failure phenomenon: Low signal of external clamp ultrasonic flowmeter. ⑴Cause of failure: The pipe diameter is too large or the pipe fouls seriously or the installation method is wrong. ⑵ Treatment method: Use plug-in probes for those with too large pipe diameter and serious scaling. Re-select the installation method.
Failure phenomenon: The signal of the plug-in probe decreases after a period of use. ⑴Cause of failure: The probe may be offset or the scale on the probe surface may be thick. ⑵ Treatment method: readjust the probe position. Clear the emitting surface of the probe.
Trouble phenomenon: No display when booting. ⑴Cause of failure: The power supply attribute does not correspond to the rated value of the instrument or the fuse is blown. ⑵ Treatment method: Check whether the power supply attribute corresponds to the rated value of the instrument. Whether the fuse is blown. If the above problems are not found, notify the factory professionals to deal with.
Trouble phenomenon: The instrument has only backlight and no character display after power on. ⑴Cause of failure: Generally, the program chip is missing. ⑵ Treatment method: notify the factory professionals to deal with.
Failure phenomenon: Ultrasonic flow meter cannot be used under strong interference on site. ⑴ The cause of the fault: The power supply has a large fluctuation range, or there are frequency converters or strong magnetic field interference or the grounding wire is incorrect. ⑵ Treatment method: Provide stable power supply to the instrument. Or install the meter away from the inverter and strong magnetic field interference. Or set the grounding wire standardly.
Sino-Inst, Manufacuturer for Portable Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of 1″~48″(25mm~1200mm). It can measure even liquids such as water, sea water, oil, and slurry.
Sino-Inst’s Portable Ultrasonic Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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.
Insertion Flow Meter is widely used for flow measurement of large diameter pipes. Insertion Turbine Flow Meter is also called insertion type turbine flow meter.
Insertion Turbine Flow Meter is designed for accurate, cost-effective flow measurement of large pipes. Insertion Turbine Flow Meter utilizes an electronic turbine rotation sensing system and unique low-quality turbine design. It provides process flow measurement for steam, gas, and high-temperature liquid Reliable solution. Of course, according to different application environments, different versions of plug-in flow meters can be provided, such as fixed, adjustable, bidirectional, and high pressure.
SI- LWCB/Q SERIES Insertion Turbine Flowmeters for Liquids and Gas 4”-72” Pipe Diameters
LWCQ features
LWCB features
Strong anti-impurity ability. The tangential impeller can release suspended debris in the fluid at any time when it is rotating so that it will not be wound on the blades of the tangential impeller;
The structure and principle of the sensor and display instrument are very simple and intuitive. It is especially easy for users to master its use and maintenance technology;
Strong anti-electromagnetic interference and anti-vibration ability;
Strong anti-electromagnetic interference and anti-vibration ability;
The structure and principle of the sensor and display instrument are very simple and intuitive. It is especially easy for users to master its use and maintenance technology;
The sensor can be installed in the open air. The entire sensor can be submerged in water for a long time;
After replacing the impeller and bearing, the meter coefficient remains unchanged;
The flow range is wide and the lower limit flow rate is low.
Wide flow range. Low lower limit flow rate;
The metering error of the complete set of flowmeters to the total fluid is small.
The measurement error of the complete set of the flowmeter to the total fluid is small;
Almost no pressure loss. Save power and power consumption.
Almost no pressure loss. Save power and power consumption;
After replacing the impeller and bearing, the meter coefficient remains unchanged;
The sensor can be installed in the open air. The entire sensor can be submerged in water for a long time;
Sensors with shut-off valves. There is no need to cut off the flow during installation and removal;
Sensors with shut-off valves. There is no need to cut off the flow during installation and removal;
Horizontal, vertical, and inclined pipes can be used;
Horizontal, vertical, and inclined pipes can be used;
The purchase, installation, and maintenance costs of complete flowmeters are low.
The purchase of complete sets of flowmeters. Low installation and maintenance costs;
Specifications Of Turbine Insertion Flow Meter
Accuracy
±5% 、±2.5%
Insertion depth
When the inner diameter (DN) of the tested pipe is ≤1050mm, the insertion depth is: LWCQ: 0.5×DN-20mm LWCB: 0.5×DN
Nominal pressure
1.0 MPa
Measured liquid temperature
-20℃~120℃
Ambient temperature
-20 ℃~70 ℃
Distance from the sensor to display meter
Up to 1000m or more
Requirements on the length of straight pipe
The length of the upstream straight pipe section of the sensor should not be less than 20DN, and the length of the downstream straight pipe section should not be less than 7DN to ensure measurement accuracy. If the length of the straight pipe section cannot meet this requirement, the on-site calibration instrument coefficient K can be used after on-site calibration is carried out under the condition of on-site calibration.
Flow Range
Model
Measured inner diameter of pipe mm
Insert rod length mm
The flow range corresponding to the nominal diameter DN m3/h
Full flow range
Accuracy is ±2.5% of the flow range of the displayed value
Accuracy is the flow range of ±5% of the displayed value
LWCQ-100*
100
6-150
10-150
<10-6
LWCQ-150
150
13-200
20-200
<20-13
LWCQ-200
200
23-300
40-300
<40-23
LWCQ≤400*
100
906
6-150
10-150
<10-6
150
13-200
20-200
<20-13
200
23-300
40-300
<40-23
250
36-450
62-450
<62-36
300
52-650
90-650
<90-52
350
70-900
120-900
<120-70
400
92-1100
160-1100
<160-92
LWCQ≤800
500
1106
150-1800
250-1800
<250-150
600
220-2500
360-2500
<360-220
700
280-3500
450-3500
<450-280
800
380-4500
640-4500
<640-380
LWCQ>800*
900
1306
460-5800
800-5800
<800-460
1000
600-7000
990-7000
<990-600
1100
700-8500
1200-8500
<1200-700
Model
Measured inner diameter of pipe mm
Insert rod length mm
The flow range corresponding to the nominal diameter DN m3/h
Full flow range
Accuracy is ±2.5% of the flow range of the displayed value
Accuracy is the flow range of ±5% of the displayed value
LWCB-100*
100
3-150
5-150
<5-3
LWCB-150
150
7-200
10-200
<10-7
LWCB-200
200
12-300
20-300
<20-12
LWCB≤400*
100
900
3-150
5-150
<5-3
150
7-200
10-200
<10-7
200
12-300
20-300
<20-12
250
18-450
31-450
<31-18
300
26-650
45-650
<45-26
350
35-900
60-900
<60-35
400
46-1100
80-1100
<80-46
LWCB≤800
500
1100
75-1800
125-1800
<125-75
600
110-2500
180-2500
<180-110
700
140-3500
225-3500
<225-140
800
190-4500
320-4500
<320-190
LWCB>800*
900
1300
230-5800
400-5800
<400-230
1000
300-7000
495-7000
<495-300
1100
350-8500
600-8500
<600-350
Model
Description
LWC—
□
□
□
Impeller
Q
Tangential
B
Axial
Structure
≤or>
Indicates a shut-off valve
—
Indicates no shut-off valve
Diameter
（mm）
User pipe diameter
Model example Example 1: LWCQ-100, which means no stop valve, nominal diameter DN100mm Example 2: ≤400, it means there is a stop valve, the nominal diameter DN≤400mm Example 3: LWCQ＞800, it means there is a stop valve, the nominal diameter DN＞800mm
The plug-in turbine flowmeter is a new domestic velocity flowmeter. The turbine head, detection coil, etc. are designed as a combined plug-in. Because of its small size, the installation hole is also small. Therefore, a ball valve can be used to solve the problem of closing the installation hole.
More ingeniously, the insertion rod is made into a trapezoidal screw. When you need to remove it, you don’t need to stop the water. You can first rotate the trapezoidal screw to gradually raise the turbine head. After passing the upper ball valve, rotate the handle of the ball valve to close the pipeline. You can continue to spin up the turbine until it is removed. After installation and reset, proceed in reverse order. The same can be achieved without stopping the water.
The impeller inserted into the detection head of the plug-in turbine flowmeter is rotated by the fluid. The magnetic resistance of the magnetic circuit of the detection coil is periodically changed. The magnetic flux in the detection coil is periodically changed. Therefore, electric pulses are induced in the detection coil. Flow signal. The frequency f (times/second) of this signal is proportional to the volumetric flow Q (m3l second) flowing through the pipeline. The proportional coefficient is the meter coefficient K of the sensor, so f=K”Q.
The electrical pulse signal is amplified by the preamplifier and sent to the secondary instrument. Its waveform is rectangular pulse. After further enlargement and shaping, it is divided into two ways.
Send coefficient conversion circuit all the way. Then the power amplifier is sent to the totalizer. Obtain the cumulative volume flow. The other way sends the frequency dividing circuit. Then output 0~10mA (or 4~20mA) current signal through frequency/current conversion. At the same time, the instantaneous flow rate is displayed on the secondary meter.
Steam Vortex Flow Meters are designed for accurate, cost-effective mass flow measurement of saturated steam.
The standard loop-powered version of the vortex flowmeter is equipped with the internal temperature compensation required for direct mass flow measurement. Steam Vortex Flow Meter is provided with a 4-20mA analog output for flow rate, pulse output for totalization, and a built-in user interface and display. The standard loop-powered meter also includes HART.
The gas turbine flowmeter integrates temperature, pressure, flow sensors and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen and other gases measurement.
Turbine flow meters are velocity flow meters, also called impeller flow meters. Can be used to measure the instantaneous flow and cumulative flow of liquids and gases.
Turbine flowmeters are widely used in flow measurement: petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas and cryogenic fluids. Turbine flowmeter signals can be divided into pulse signals or current signals (4-20mA). It is suitable for use with secondary display, PLC, DCS and other computer control systems.
Simply put. The turbine flow meter has a turbine. It needs to be installed in the fluid pipeline when in use, and both ends are supported by bearings.
When the fluid passes through the turbine. The fluid hits the turbine blades. Drive the rotation of the turbine blades. The flow rate is measured indirectly through the angular velocity of the turbine blades. The method used is that the angular velocity of the blades is proportional to the fluid velocity.
At present, there are many kinds of Insertion flowmeters in use. According to the working principle of the Insertion flowmeter detection head, it can be divided into Insertion turbine, Insertion vortex, Insertion electromagnetic, Insertion ultrasonic, and Insertion target flowmeter.
Insertion flow meter is a type of flow meter divided by structure, which includes various flow meters with different working principles.
Insertion flow meter has a great development. Insertion flow meter has been promoted and used in many forms.
According to the working principle of the Insertion flow meter detection head, it can be divided into plug-in turbine, plug-in vortex, plug-in electromagnetic, uniform velocity tube and thermal flow meter.
According to the number of measurement points of the Insertion flow meter, it can be divided into two categories: point flow type and runoff type.
Sino-Inst’s insertion turbine flow meters provide significant cost, savings for line sizes from 2 to 80′ without compromising performance.
With high accuracy, wide turndown, and a unique low-mass rotor design without welded joints, the insertion turbine flow meter gives you the benefit, of more than 10 years of practical experience.
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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.
Sanitary Flow Meter, also called sanitary turbine flow meter or Hygienic turbine flowmeter. Ensure Accurate Flow Measurement in Sanitary food-processing and bio-technology industries.
Sanitary turbine flow meters have stainless steel bodies and come standard with Tri-Clover fittings. Sanitary flow meter is suitable for measuring liquid without impurities. It can output pulse frequency signal. It is used to detect instantaneous flow and total integrated flow. Sanitary flow meter can be used in food, sport drink, liquor and other beverage industries, in preprocess applications.
Sanitary Turbine Flow Meter reference price: DN100. USD 300-700/pc.
Sino-Inst offers a variety of Turbine flow meters for flow measurement. If you have any questions, please contact our sales engineers.
Meets the requirements of 3-A Sanitary Standard number 28-04
316L stainless steel body and internal wetted parts
Consistent, reliable gas flow measurement
Wafer mounting configuration for limited space requirements
Anti-corrosion and anti-rust materials, suitable for the health industry;
Quick-load structure, easy to install and maintain;
High precision and good repeatability;
High-quality turbine, beyond the conventional range;
Benefits of sanitary turbine flow meter
The lightweight, balanced rotor provides instantaneous response to changes in the flow;
No mating flange design allows for quick and easy install;
Superior material of construction for high performance in aggressive environments.
The SI-LWGY Series Sanitary Turbine Flowmeters feature 316 stainless steel construction. And have a smooth finish. Which is designed to eliminate cracks and crevices where bacteria breed.
Standard flowmeters are available in sizes from 1/2″ to 2″ with sanitary clamps.
Flow rates range from 0.1 to 250 gallons per minute (0.38 to 946 LPM).
Clean liquid without impurities (water, water solution, beer beverage, glycerin, glycol)
Nominal pipe diameter
DN4-50mm
Accuracy level
±0.2%FS, ±0.5%FS, ±1.0%FS, ±1.5%FS
Repeatability error
±0.5% of measured value; ±1.0%
Linearity
1%
display
Wide screen LCD display, parameters and variables can be set through the buttons on the panel Instantaneous flow display, cumulative total display, percentage display, frequency display l/min, m³/h, Hz
Resolution
0.1 l/min, 0.005 m³/h
Operating temperature
-35-60℃ (standard type) -20-180℃ (high temperature type) -40-80℃ (explosion-proof type)
Allowable viscosity
0.8-30cm²/s
Work pressure
1.6MPa, 2.5MPa, 4.0MPa, special can be customized
shell material
Stainless steel 316L
Turbine material
Stainless steel 316L
Head material
Aluminum alloy
Bearing
Tungsten carbide bearings, ruby bearings are optional
Sanitary Flow Meter uses a new type of sanitary lining material and lining technology, which meets the sanitary requirements of the food industry. It uses a stainless steel shell and stainless steel clamp connection. It is convenient for the quick disassembly and cleaning of the electromagnetic flow meter. Magnetic flow meter in a sanitary version which meets the strict requirements of the food-processing and bio-technology/ pharmaceutical industries.
Clamp on ultrasonic flow meter is also a good choice for the health industry. Because the external clamp sensor does not need to destroy the pipe.
A turbine flow meter is a volume sensing device. As liquid or gas passes through the turbine housing, it causes the freely suspended turbine blades to rotate. The velocity of the turbine rotor is directly proportional to the velocity of the fluid passing through the flow meter.
The external pickoff mounted on the body of the flow meter, senses each rotor blade passing, causing the sensor to generate a frequency output. The frequency is directly proportional to the volume of the liquid or gas.
The gas turbine flowmeter uses a turbine for measurement. It first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow rate.
Gas turbine flowmeter is used to detect instantaneous flow and total integrated flow. Its output signal is frequency, which is easy to digitize.
The induction coil and the permanent magnet are fixed on the housing together. When the ferromagnetic turbine blade passes the magnet, the reluctance of the magnetic circuit changes, thereby generating an induction signal.
The signal is amplified and reshaped by the amplifier and sent to the counter or frequency meter. The total accumulated flow is displayed. At the same time, the pulse frequency undergoes frequency-voltage conversion to indicate instantaneous flow.
The speed of the impeller is proportional to the flow, and the number of revolutions of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal. It not only improves the anti-interference of the detection circuit, but also simplifies the flow detection system.
The gas turbine flowmeter has a turndown ratio of up to 10:1, and the accuracy is within ±0.2%. The time constant of the turbine flowmeter with small inertia and small size can reach 0.01 second.
Liquid Turbine Flow Meter Working Principle
Liquid Turbine Flow Meter is a speed type flow meter based on the principle of torque balance.
The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction. The impulse of the fluid makes the blades have a rotational torque. After the friction torque and fluid resistance are overcome, the blades rotate. The speed is stable after the torque is balanced.
Under certain conditions, the speed is proportional to the flow rate.
Due to the magnetic permeability of the blade, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force. The magnetic flux of the coil is periodically changed. Electrical pulse signals are induced at both ends of the coil.
This signal is amplified and reshaped by an amplifier. A continuous rectangular pulse wave with a certain amplitude is formed. It can be transmitted to the display instrument remotely. The instantaneous flow or total amount of the fluid is displayed.
Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor. The flow equation is:
Where: f——Pulse frequency [Hz] k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet. Q——The instantaneous flow of fluid (under working condition) [m3/h] 3600-conversion factor in seconds
The meter coefficient of each sensor is filled in the verification certificate by the manufacturer. The k value is set in the matching display instrument. The instantaneous flow and cumulative total can be displayed.
Turbine flow meter advantages and disadvantages
Turbine Meter Advantages
The cost is moderate.
Very good at clean, low viscosity fluids of moderate velocity and a steady rate.
Turndown is very good as it can read very low compared to the greatest flow.
They are reliable if put in a clean fluid especially if it has some lubricity.
AGA and API approved for custody transfers.
They do cause some pressure drop where that may be a factor such as gravity flows.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.
High accuracy. Among all flowmeters, it is the most accurate flowmeter.
No zero drift, good anti-interference ability.
Turbine Meter Disadvantages
Not reliable for steam.
Bearings wear out.
Requires constant backpressure to prevent cavitation.
Accuracy adversely affected by bubbles in liquids.
Turbine meters can be used with clean liquids and gases only (may need to install a strainer upstream to prevent damage from particulates).
Not applicable for measuring corrosive fluids.
May not function properly with high viscosity fluids where the flow profile is laminar.
Cannot maintain calibration characteristics for a long time.
Types of turbine flow meter
Generally speaking, according to the measuring medium, we can divide the turbine flowmeter into liquid turbine flowmeter and gas flowmeter.
Of course, according to the function of the turbine flowmeter, we can divide the turbine flowmeter into a basic turbine flowmeter and an intelligent turbine flowmeter.
Basic turbine flowmeter
The turbine sensor itself does not have the on-site display function, and only transmits the flow signal remotely. The flow signal can be divided into pulse signal or current signal. Low price, high integration, small size, especially suitable for use with secondary display, PLC, DCS and other computer control systems.
Intelligent turbine flowmeter
Intelligent turbine flowmeter, a display integrated instrument developed by combining turbine flow sensor and advanced ultra-low power single-chip microcomputer technology. It has the advantages of compact structure, high reliability, resistance to external power supply interference, lightning protection, and low cost. Three-point correction of instrument coefficients can be carried out on site, and nonlinearity of instrument coefficients can be intelligently compensated. Simultaneously display instantaneous flow, cumulative flow, temperature, pressure and other measurement parameters. It has real-time data storage function and explosion-proof function. Especially suitable for use with PLC, DCS and other computer control systems.
What is k factor in turbine flow meter?
K-factor (K value) is a factor calculated by calibrating and comparing the meter with other measuring devices that meet the accuracy requirements before putting it into use. This coefficient is a fixed value, which is the actual coefficient obtained by the flowmeter manufacturer for each meter after verification, and has nothing to do with the initial design.
There are two kinds of different manufacturers k: One is k=f/Q, which is the number of vortices generated by du unit flow; The other k=Q/f, that is, each vortex corresponds to the flow rate of Zhuan. The k value is calibrated with factory water. The sensor measures the vortex number of the instrument and compares it with the volume flow measured by the calibration device to obtain the k value.
Sino-Inst, Manufacuturer for Turbine Sanitary flow meterrs, like: gas turbine flow meter, liquid turbine flow meter, sanitary turbine flow meter, insertion turbine flow meter, steam turbine flow meter, and natural gas turbine flow meter.
Sino-Inst’s Turbine Sanitary flow meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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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.
Liquid turbine flow meter is the main type of impeller flow meter. Turbine flow meter sensor uses a multi-blade rotor to sense the average flow rate of the fluid. Belongs to speed flow meter.
Liquid turbine flow meter is the main type of impeller type flow (velocity) meter. It is composed of sensors and conversion display. The sensor uses a multi-blade rotor to sense the average flow rate of the fluid, thereby deriving the flow or total amount. Liquid turbine flow meter is suitable for measuring liquids that are not corrosive to stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3 in closed pipelines and are free of impurities. For milk, soybean oil, edible oil, diesel, purified water.
The repeatability is good, and the short-term repeatability can reach 0.05%~0.2%. It is precisely because of the good repeatability, such as frequent calibration or online calibration can get extremely high accuracy. It is the preferred flow meter in trade settlement;
High precision, generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
Output pulse frequency signal. No zero drift, strong anti-interference ability;
Can get very high frequency signal (3~4kHz). Strong signal resolution;
Wide range. Medium and large diameters can reach 1:20, and small diameters are 1:10;
The structure is compact and light. It is convenient to install and maintain, and has a large circulation capacity;
Suitable for high-pressure measurement. No holes are required on the meter body, and it is easy to make a high-pressure meter;
It can be made into an insert type, suitable for large-caliber measurement. The pressure loss is small, the price is low. It can be taken out continuously, and the installation and maintenance are convenient.
Turbine Flow Meter Advantages and Disadvantages
Advantages: (1) High precision, among all flowmeters, it is the most accurate flowmeter; (2) Good repeatability; (3) Element zero drift, good anti-interference ability; (4) The range is wide; (5) The structure is compact.
Disadvantages: (1) The calibration characteristics cannot be maintained for a long time; (2) The physical properties of the fluid have a great influence on the flow characteristics.
304 stainless steel, 316 (L) stainless steel, etc.
Measured medium temperature (℃)
-20~+80℃;-20~+120℃; -20~+150℃;
Environmental conditions
Temperature -10~+55℃, relative humidity 5%~90%, atmospheric pressure 86~106kPa
output signal
Sensor: pulse frequency signal, low level≤0.8V, high level≥8V Transmitter: two-wire 4~20mADC current signal
Power supply
A. External power supply: +24VDC±15%, ripple ≤±5% for 4-20mA, pulse output, R485, etc. B. Internal power supply: 1 set of 3.0V10AH lithium battery, the battery voltage is normal when the battery voltage is 2.0-3.0V
DN4-DN40 caliber sensor is a threaded connection, the maximum working pressure is 6.3Mpa;
DN50-DN200 caliber sensor is a flanged connection, the maximum working pressure is 2.5Mpa;
The DN4-DN10 caliber sensor has straight pipe sections and filters.
Sensors with a diameter above DN15 can be supplied with straight pipe sections.
Sensors with DN25-DN40 caliber can also be made as flanged connections, but this must be stated when ordering.
Liquid Turbine Flow Meter Applications
Turbine flowmeter is a kind of speed meter. It has the advantages of high precision, good repeatability, simple structure, few moving parts, high pressure resistance, wide measurement range, small volume, light weight, small pressure loss, and convenient maintenance.
Applications for turbine flowmeters can be found in the water, petroleum and chemical industries. Water applications include distribution systems within and between water bodies. Petroleum applications include custody transfer of hydrocarbons. Other applications can be found in the food and beverage and chemical industries.
When measuring diesel oil, a liquid turbine flowmeter can generally be selected for measurement.
Why is the liquid turbine flowmeter suitable for measuring diesel? Liquid turbine flowmeter has high anti-electromagnetic interference and anti-vibration ability. In addition, it has a wide range. Not only can measure medium and small calibers, but also large calibers can be measured.
Liquid turbine flowmeters can be divided into flange connection, threaded connection, plug-in type and clamp type sanitary type according to the installation method. The specific installation method needs to be selected according to the on-site selection.
Turbine flowmeters are also a good choice when you need to measure water flow.
Perhaps, you would say, an electromagnetic flowmeter is a better choice. Yes, in most cases, we will choose electromagnetic flowmeter to measure water flow. However, if the electromagnetic flowmeter cannot measure it. For example, raw water, non-conductive aqueous solution, etc. Then, we can consider using a turbine flowmeter.
Gas turbine flow meter is a velocity flow meter that measures gas flow. For natural gas, nitrogen, and gas trade measurement.
The gas turbine flowmeter integrates temperature, pressure, flow sensors and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen and other gases measurement.
Gas turbine flowmeters are widely used in petroleum, chemical, metallurgy, aviation, scientific research and other departments and various gases in industrial fields, such as natural gas, city gas, propane, butane, air, nitrogen and other gases. The instrument has high accuracy and good repeatability, and is suitable for trade measurement and industrial process detection.
Liquid Turbine Flow Meter is a speed type flow meter based on the principle of torque balance.
The fluid flows through the sensor housing. Because the blades of the impeller have a certain angle with the flow direction. The impulse of the fluid makes the blades have a rotational torque. After the friction torque and fluid resistance are overcome, the blades rotate. The speed is stable after the torque is balanced.
Under certain conditions, the speed is proportional to the flow rate.
Due to the magnetic permeability of the blade, it is in the magnetic field of the signal detector (composed of permanent magnets and coils). The rotating blade cuts the magnetic lines of force. The magnetic flux of the coil is periodically changed. Electrical pulse signals are induced at both ends of the coil.
This signal is amplified and reshaped by an amplifier. A continuous rectangular pulse wave with a certain amplitude is formed. It can be transmitted to the display instrument remotely. The instantaneous flow or total amount of the fluid is displayed.
Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor. The flow equation is:
Where: f——Pulse frequency [Hz] k——The meter coefficient of the sensor [1/m3], which is given by the calibration sheet. Q——The instantaneous flow of fluid (under working condition) [m3/h] 3600-conversion factor in seconds
The meter coefficient of each sensor is filled in the verification certificate by the manufacturer. The k value is set in the matching display instrument. The instantaneous flow and cumulative total can be displayed.
The liquid turbine flowmeter is a precision flow measuring instrument. The liquid turbine flowmeter and the corresponding flow totalizer can be used to measure the flow and total amount of liquid.
Liquid turbine flow meters equipped with sanitary joints can be used in the pharmaceutical industry.
Filling measurement of pure water produced by reverse osmosis desalination method
In the application of reverse osmosis equipment, it can be used to supply process pure water in the pharmaceutical, chemical, electronic, electroplating and other industries. It can also be used as a production line for drinking bottled and bottled water, as well as food and beverage.
Field Application of Flowmeter in Thermal Power Plant System
The instruments and meters used in thermal power plants mainly include temperature, pressure, liquid level, and flow. There are many types of flowmeter instruments in this system. Depending on the nature of the medium, different flow rates have different effects.
Boiler water supply process
The treatment of boiler make-up water plays a vital role in the overall operation of the boiler. The application of liquid turbine flow meters directly affects the health and smooth operation of the process.
Sino-Inst’s turbine flow meters, made in China. Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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.
Gas turbine flow meter is a velocity flow meter that measures gas flow. For natural gas, nitrogen, and gas trade measurement.
The gas turbine flowmeter integrates temperature, pressure, flow sensors and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen and other gases measurement.
Gas Turbine Flow Meter reference price: USD900-2500/pc
Sino-Inst offers a variety of Turbine flow meters for flow measurement. If you have any questions, please contact our sales engineers.
High accuracy, good repeatability. Small pressure loss, good vibration resistance;
Using high-quality bearings, low friction resistance, good sealing performance and long life;
It integrates microprocessor, flow sensor, high-precision temperature and pressure sensor. Directly measure the flow, temperature and pressure of the measured gas. And automatically perform flow tracking compensation and compression factor correction operations;
The meter has pulse signal and analog signal output. It can directly realize the centralized collection and real-time management of computer data through the RS485 communication interface or the GPRS system;
Low power consumption, can be powered by internal battery or external power supply;
With real-time data storage function, it can prevent data loss when the battery is replaced or the power is suddenly lost. In the case of power failure, internal data can be stored permanently;
It can be used in conjunction with IC card prepayment system to facilitate trade settlement;
Specifications Of Gas Turbine Flow Meter
Mediun :
No impurity, no corrosive gas, natural gas, etc.
Precision:
±1.5%, ±1.0%, ±0.5%,
Repetition:
Better than 0.1%
Traffic Range:
6.5~6500m³/h
Display content:
instantaneous working conditions, volume, standard volume, temperature, pressure, battery capacity, etc.
Calibre measurement:
DN50-DN300
Connection mode:
Flange connection
Power supply:
Battery or external power supply operation
Output:
Pulse signal output, 4-20mA current output, RS485 communication GPRS remote communication
Inside nominal diameter DN (mm)
Made
Flow specification
Startup flow rate (m3/h)
Range of flow (m3/h)
Pressure rating (Mpa)
Sell material
Accuracy
50(2”)
KLWQD-501
G40
≤0.8
6.5~65
1.6 2.5
Aluminum alloy
Accuracy 1.0:
The allowable error is Qmin~0.2Qmax:±2%; 0.2Qmax~Qmax;±1%
KLWQD-502
G65
≤0.9
10~100
KLWQD-503
G100
≤1.7
16~160
80(3”)
KLWQD-801
G100
≤2.0
10~200
1.6 2.5
Aluminum alloy
KLWQD-802
G160
≤2.5
18~360
KLWQD-803
G250
≤3.0
20~400
100(4”)
KLWQD-1001
G160
≤2.5
13~250
1.6
Aluminum alloy
KLWQD-1002
G250
≤3.0
20~400
KLWQD-1003
G400
≤4.5
32~650
150(6”)
KLWQD-1501
G400
≤7.5
32~650
1.6
Aluminum alloy
KLWQD-1502
G650
≤8.5
50~1000
KLWQD-1503
G1000
≤10.0
80~1600
200(6”)
KLWQD-2001
G650
≤12.0
50~1000
1.6
carbon steel
Accuracy 1.5:The allowable error is Qmin~0.2Qmax:±3.0%; 0.2Qmax~Qmax;±1.5%
KLWQD-2002
G1000
≤16.0
80~1600
KLWQD-2003
G1600
≤20.0
130~2500
250(10”)
KLWQD-2501
G1000
≤20.0
80~1600
1.6
carbon steel
KLWQD-2502
G1600
≤22.0
130~2500
KLWQD-2503
G2500
≤25.0
200~4000
300(12”)
KLWQD-3001
G1600
≤22.0
130~2500
1.6
carbon steel
KLWQD-3002
G2500
≤35.0
200~4000
KLWQD-3003
G4000
≤45.0
320~6500
What Are Gas Turbine Flow Meter?
When the fluid flows into the Gas Turbine Flow Meter, it is rectified and accelerated under the action of a dedicated integrated rectifier for the air inlet. Since the turbine blades are at a certain angle to the fluid flow direction, the angular velocity of the turbine is proportional to the fluid volume flow at this time.
According to the principle of electromagnetic induction, a magnetic sensor is used to induce a pulse signal proportional to the volume flow of the fluid from the coaxial rotating signal wheel. The signal is amplified, filtered, and reshaped and enters the intelligent flow totalizer together with the temperature and pressure sensor signals. The micro-processing unit of the instrument performs arithmetic processing. The volume flow and total flow of the gas are directly displayed on the LCD screen.
Please see the structure diagram below for the structure principle of Gas Turbine Flow Meter.
Gas turbine flow meter working principle
The gas turbine flowmeter uses a turbine for measurement. It first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow rate.
Gas turbine flowmeter is used to detect instantaneous flow and total integrated flow. Its output signal is frequency, which is easy to digitize.
The induction coil and the permanent magnet are fixed on the housing together. When the ferromagnetic turbine blade passes the magnet, the reluctance of the magnetic circuit changes, thereby generating an induction signal.
The signal is amplified and reshaped by the amplifier and sent to the counter or frequency meter. The total accumulated flow is displayed. At the same time, the pulse frequency undergoes frequency-voltage conversion to indicate instantaneous flow.
The speed of the impeller is proportional to the flow, and the number of revolutions of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal. It not only improves the anti-interference of the detection circuit, but also simplifies the flow detection system.
The gas turbine flowmeter has a turndown ratio of up to 10:1, and the accuracy is within ±0.2%. The time constant of the turbine flowmeter with small inertia and small size can reach 0.01 second.
Gas turbine flowmeters are mainly used for gas flow measurement in industrial pipelines.
Flow measurement of air, nitrogen, oxygen, hydrogen and other media fluids.
When measuring the volume flow under working conditions, it is hardly affected by the fluid density, pressure, temperature, viscosity and other parameters.
The gas turbine flowmeter has the characteristics of high sensitivity, good repeatability, large range ratio and high precision. Therefore, it is widely used in natural gas flow measurement.
When the flow rate changes greatly, the gas turbine flowmeter is more suitable than the differential pressure flowmeter. The gas turbine flowmeter has a wide range ratio, medium and large diameters can reach 40:1 to 10:1, and small diameters are 6:1 or 5:1.
With the development of natural gas measurement technology and the increasing requirements for natural gas trade and transfer measurement, gas turbine flowmeters can not only meet the requirements of trade measurement, but also meet a wide measurement range.
In addition, its equipment cost is lower than orifice flow meters and gas ultrasonic flow meters. Therefore, gas turbine flow meters are being used more and more widely. Especially China’s natural gas market usage has increased significantly. However, it is common in the downstream market that the initial consumption of natural gas pipelines is low. Large supply. Turbine flowmeter can reduce the diameter of the measuring tube due to its wider range ratio, thereby reducing investment.
The gas turbine flowmeter has high accuracy. The accuracy of ordinary flowmeters is (±1～±1.5)%, and the special type is (±0.5～±0.2)%. However, the higher the accuracy, the more demanding on-site conditions. harsh. Turbine flowmeter has good repeatability. Short-term repeatability can reach (0.05～0.2)%. If you calibrate regularly, you can get high accuracy.
The gas turbine flowmeter has a compact and light structure, convenient installation and maintenance, and large flow capacity. It is suitable for high pressure measurement.
There is no need to open holes on the meter body, and it is easy to make a high-pressure meter, which can meet the pressure increase requirements of the pipeline. Because of the above advantages, it is one of the preferred flow meters in natural gas trade settlement.
Sino-Inst’s turbine flow meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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.
