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.

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

Executive standard	《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 acceleration	Piezoelectric type :0.2g   Projected Capacitive:1.0-2.0g
Accuracy	±1%R,±1.5%R;plug-in:±2.5%R
Range of degrees	1:6~1:25
Power Supply	Sensor:DC+12V,DC+24V;Transmitter:DC+12V,DV+24V;Battery-powered:3.6V battery
Output signal	Pulse:high level:≥5V low level:≤1V;electricity current:4~20mA
Pressure loss coefficient	Comply with JB/T9249 standard Cd≤2.4
Explosion-proof coefficient	Intrinsic safety :Ex ia II CT2-T4 Explosion-proof type:Exd II CT2-T5
Level of protection	Ordinary type:IP65  Diving type:IP68
Environmental conditions	Tempersature:-20ºC~55ºC,relative humidity 5%~90%,atmospheric pressure:86~106kPa
Applicable medium	gas ,liquid,steam
Transmission distance	Three-wire pulse output:≤300m,Two-wire standard current output:(4~20mA)≤1500m load resistance≤500Ω;RS485/HART≤1200m.
Counduit entry	Thread 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:

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

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