Threaded Vortex Nitrogen Gas Flow Meter

Nitrogen gas flow meter is used to measure the flow rate of N2 gas. Digital vortex flowmeter can be flange-Wafer-threaded installation. Threaded is suitable for small diameter pipes.

Threaded Vortex Nitrogen Gas Flow Meter

Nitrogen gas flow meter is easy to use, reasonably priced. Threaded connection is a widely used detachable fixed connection. It has the advantages of simple structure, reliable connection, and convenient assembly and disassembly. Nitrogen is required in many processes of the chemical and pharmaceutical industry. Predominantly as protective gas, to prevent the occurrence of explosive atmospheres. Sino-Inst vortex flowmeter can be used for natural gas, nitrogen, biogas and other gases.

Vortex Nitrogen Gas Flow Meter reference price: USD 400-1000/pc.

Sino-Inst offers a variety of  Vortex flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Features of Vortex Nitrogen Gas Flow Meter

  • The nitrogen flow can be controlled more precisely to save costs.
  • The nitrogen flow control can also prevent the nitrogen flow from being too large, resulting in insufficient heat supplementation.
  • The amount of nitrogen output can be accurately known.
  • The nitrogen flow meter has no movable parts, no wear, and dirt resistance. No mechanical maintenance is required, and the service life is long;
  • The overall structure design of the instrument is reasonable, the dynamic measurement range is wide, and the pressure loss is small;
  • The measurement is not affected by temperature and pressure, and is resistant to high temperatures & High pressure.

Specifications of Vortex Nitrogen Gas Flow Meter

《JB/T9249-2015 Vortex flow meter industry standard》
Diameter(mm)15,20,25,40,50,65,80,100,125,150,200,250,300,(300~1000 plug-in)
Nominal pressure(MPa)DN15-DN200 4.0(>4.0,Supply agreement)DN250-DN300 1.6(>1.6,Supply agreement)
Medium temperature(ºC)Piezoelectric type :-40~150,-40~260,-40~330;
Projected Capacitive:-40~400(upply agreement)
Body material 1Cr18Ni9Ti(Other material order by agreement)
Permissible vibration
Piezoelectric type :0.2g   Projected Capacitive:1.0-2.0g
Range of degrees1:6~1:25
Power SupplySensor:DC+12V,DC+24V;Transmitter:DC+12V,DV+24V;Battery-powered:3.6V battery
Output signalPulse:high level:≥5V low level:≤1V;electricity current:4~20mA
Pressure loss coefficientComply with JB/T9249 standard Cd≤2.4
Explosion-proof coefficientIntrinsic safety :Ex ia II CT2-T4 Explosion-proof type:Exd II CT2-T5
Level of protection Ordinary type:IP65  Diving type:IP68
Environmental conditionsTempersature:-20ºC~55ºC,relative humidity 5%~90%,atmospheric pressure:86~106kPa
Applicable mediumgas ,liquid,steam
Transmission distance Three-wire pulse output:≤300m,Two-wire standard current output:(4~20mA)≤1500m
load resistance≤500Ω;RS485/HART≤1200m.
Counduit entryThread M20*1.5 or other

You may like: Digital Flow Meters Guide| Liquid and Gas

What is the difference between Wafer type and screw type connection vortex flowmeter?

Three connection methods: Wafer, thread, flange, etc.:

The flange connection can be selected according to the process requirements, according to different joint surfaces, pressure levels, etc.

Wafer type can be used for various pipe diameters, but the pressure level is not too high.

The application of threaded connection is relatively small, such as small diameter, medium and low pressure, etc.

Read more about: Liquid Flow Meters Guide

Nitrogen Gas Flowmeters-Liquid Nitrogen Flowmeters

5 matters to pay attention to when choosing threaded Vortex Nitrogen Gas Flow Meter

The principle of the vortex flowmeter is to install a stagnant part in the flowmeter pipe. When the fluid flows through the stagnant part. Due to the stagnant effect on the surface of the stagnant part, there will be two asymmetric rows downstream.

These vortices are separated on the side and rear of the stagnant member to form a so-called Karman vortex train. The rotation directions of the two vortices are opposite. Karman theoretically proved that when h/L=0.281, the vortex train is stable. h is the width between two vortex rows, and L is the distance between two adjacent vortices

Correct selection can ensure the better use of threaded connection vortex flowmeter.
What kind of vortex flowmeter should be selected according to the physical and chemical properties of the fluid medium to be measured?

  1. Precise function inspection

Accuracy grade and function Choose the instrument accuracy grade according to the measurement requirements and use occasions, so as to be economical and cost-effective.
For example, it is used for trade settlement, product handover and energy metering occasions. The accuracy level should be higher, such as 1.0, 0.5, or higher.

For process control occasions, different accuracy levels can be selected according to control requirements.

For some occasions that just check the process flow and do not need to do precise control and measurement, you can choose a slightly lower accuracy level, such as 1.5, 2.5, or even 4.0. In this case, you can choose a cheap plug-in vortex flowmeter.

2. Measurable medium

When measuring general media, the full-scale flow of the vortex flowmeter can be selected within the range of 0.5-12m/s of the measured medium flow rate, and the range is relatively wide.
The selected instrument specification (caliber) is not necessarily the same as that of the process pipeline. It should be determined whether the measurement flow range is within the flow rate range. That is, when the flow rate of the pipeline is low and cannot meet the requirements of the flow meter or when the measurement accuracy cannot be guaranteed at this flow rate. It is necessary to reduce the caliber of the instrument to increase the flow velocity in the pipe and obtain satisfactory measurement results.

3. Selection of screw connection vortex flowmeter transmitter

In the saturated steam measurement, the VA piezoelectric vortex flow transmitter is used. Because the vortex flowmeter has a wide range. Therefore, in practical applications, it is generally considered that the flow rate of the saturated steam should not be lower than that of the vortex flowmeter. Lower limit. That is to say, the fluid velocity must not be lower than 5m/s.

Vortex flow transmitters of different calibers can be selected according to the amount of steam used. The caliber of the transmitter cannot be selected by the caliber of the existing process pipeline.

4. Selection of pressure compensation pressure transmitter

Because the saturated steam pipeline is long, the pressure fluctuates greatly. Pressure compensation must be used. Considering the corresponding relationship between pressure, temperature and density, only pressure compensation can be used in the measurement. Because the pipeline saturated steam pressure is in the range of 0.3-0.7MPa. Pressure The range of the transmitter can be 1MPa.

5. Selection of display instrument for screw connection vortex flowmeter

Intelligent flow indicator, with functions of voltage stabilization compensation, instantaneous flow display and cumulative flow accumulation.

Further reading: Nitrogen(N2) Flow Meter Types

Digital Nitrogen Gas Flow Meters

Currently, on the market, there are four main instruments that can measure nitrogen flow:

Thermal gas mass flow meter. For direct mass measurement of industrial gases, compressed air, and aqueous fluids. Including nitrogen.

Coriolis mass flowmeter. Directly measure the mass flow of gas and liquid. It can be used to measure nitrogen, which is more expensive.

Vortex flowmeter. Directly measure the volume flow of gas and liquid. It is necessary to add temperature and pressure measuring sensors and totalizers to calculate mass flow.

Orifice flow meter

Orifice flowmeter. The orifice is used as a throttling element. With a differential pressure transmitter, the volume flow can be calculated. To convert into mass flow, temperature and pressure sensors and totalizers must also be added.

Extended reading: liquid nitrogen level measurement

Nitrogen Gas Flow Measurement

Nitrogen is required in many processes of the chemical and pharmaceutical industry; predominantly as protective gas, to prevent the occurrence of explosive atmospheres。

Such as when handling dusty products or solvents.

If your work requires you to use nitrogen, having a flow meter installed on your tank is a great way to save some money.

These indicators let you know whether gas is moving through the line, often via the use of a levitating ball, a pressure gauge, or other visual cues.

These options are simple to use and reliable, making them must-haves for welders, HVAC technicians, and more.

There are many types of Nitrogen gas flow meters. There are three types of flow meters commonly used to measure nitrogen. Precession vortex flowmeter, gas vortex flowmeter, thermal gas mass flowmeter. When selecting a model, it is necessary to select a suitable model and specification according to the parameters and cost that can be provided on-site.

Read more about:
Benefits Of Digital Gas Mass Flow Meters


Nitrogen Flowmeters are a type of flow meter that can measure the flow of nitrogen or liquid nitrogen. The common nitrogen flow rates are nitrogen and liquefied nitrogen. Nitrogen is often referred to as an inert gas. Used in metal processing in some inert atmospheres. When it is liquid, it is a common reagent for cooling, cooling, and freezing. Optimize your nitrogen system and save costs. Therefore, it is very important to accurately measure the nitrogen flow rate.

A gas flow meter is an instrument that measures the flow of gas. Installed in the pipeline to record the amount of gas flowing through. Can measure gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, LPG, hydrogen peroxide, flue gas, methane, butane, chlorine, gas, biogas, carbon dioxide, oxygen, compressed air, argon Gas, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc.

There are many types of gas flow meters. Such as vortex flowmeter, precession vortex flowmeter, orifice flowmeter, thermal mass flowmeter, rotor flowmeter, etc. For the working principle of the specific gas flow meter, you need to query the specific flow category.

During actual measurements. Because nitrogen has similar properties to air. So the air flow meter can measure nitrogen.

However, in theory, it is not universal.
Because the measured medium is different: one is nitrogen and the other is air. The flow meter coefficients are different. Best to check with the flow meter supplier.

The price of different flowmeters varies a lot. The exact flow meter price needs to be calculated based on the measurement parameters.

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Extended reading: Cryogenic Flow Meters | Liquid Nitrogen-Liquid Oxygen

Sino-Instt offer over 10 Threaded Vortex Nitrogen Gas Flow Meters, with Best Price.

A wide variety of Threaded Vortex Nitrogen Gas Flow Meters options are available to you, such as free samples, paid samples. All of our fNitrogen Gas Flow Meters can wokrk with the AMS NEW TREX.

Sino-Inst is Threaded Vortex Nitrogen Gas Flow Meter suppliers, located in China. Nitrogen Gas Flow Meter products are most popular in North America, Mid East, and Eastern Europe.

This entry was posted in Vortex Flow Meters, Flow Meters by KimGuo11. Bookmark the permalink.

About KimGuo11

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.