Industrial Liquid Nitrogen Flow Measurement Solution – Cryogenic Flow Measurement Design.
Liquid nitrogen flow meters are a type of cryogenic flow meter specifically designed to measure the flow rate of liquefied nitrogen at extremely low temperatures (-196°C; -320°F; 77 K). Of course, similar cryogenic liquefied media can also be measured, such as LNG, LOX, LAR, and LH2. Accurate flow measurement of cryogenic fluids can optimize process flows, improve overall efficiency, and save costs.
For liquid nitrogen flow measurement, Sino-Inst offers turbine flow meters, mass flow meters, gear flow meters, and target flow meters. When measuring liquid nitrogen flow, please ensure nitrogen protection for liquid nitrogen storage tanks and pipelines.
For free technical support, please contact Sino-Inst.
Featured Industrial Liquid Nitrogen Flow Meters
Features of Liquid Nitrogen (LN2)
Liquid nitrogen is inert, colorless, odorless, non-corrosive, non-flammable, and extremely low temperature. Nitrogen constitutes most of the atmosphere (78.03% by volume and 75.5% by weight). Nitrogen is inactive and does not support combustion. Frostbite is caused by a large amount of endothermic contact during vaporization. Nitrogen makes up 78% of the air.
Under normal pressure, the temperature of liquid nitrogen is -196°C. 1 cubic meter of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen at 21 ° C. Liquid nitrogen is a colorless, odorless liquid and gas that is cold at high pressure. Liquid nitrogen (often written as LN2) is a liquid form of nitrogen formed at low temperatures. The boiling point of nitrogen is -196°C.
Under normal atmospheric pressure, liquid nitrogen will form if it is below this temperature. If pressurized, liquid nitrogen can be obtained at higher temperatures.
In industry, liquid nitrogen is obtained by fractional distillation of air. After the air is purified, it is liquefied in a pressurized and cooled environment and separated by the different boiling points of the components in the air.
Although commonly used as a gas, nitrogen is generally stored and transported in a liquid state, which results in lower product supply costs.
When nitrogen turns into a liquid, it becomes a cryogenic liquid. Cryogenic liquids are liquefied gases that generally have a boiling point below –238 ° F (–150 ° C). The boiling point of liquid nitrogen is –320.5 ° F (–195.8 ° C). Because the temperature difference between the product and the surrounding environment is very large, even in winter. It is important to keep liquid nitrogen isolated from the surrounding environment. Products also require specialized use and storage equipment.
Industrial use of liquid nitrogen
In industrial production, liquid nitrogen is obtained by compressed liquid air fractionation. Liquid nitrogen can be used as a deep refrigerant. Because of its chemical inertness, it can directly contact biological tissues and freeze immediately without destroying biological activity.
Therefore, liquid nitrogen can be used:
- Quickly freeze and transport food, or make ice products;
- Research on low temperature physics;
- Demonstrate low temperature conditions in science education. Soft objects at room temperature are brittle like glass when soaked in liquid nitrogen;
- Provide the temperature required for high-temperature superconductors to show superconductivity. Such as yttrium barium copper oxide.
- Can be used as a refrigerant to quickly freeze biological tissues to prevent tissues from being damaged.
- For industrial nitrogen fertilizer.
- For chemical detection, such as the BET specific surface area test method.
Turbine Flow Meter for Industrial Liquid Nitrogen Flow Measurement
Low Temperature turbine flowmeter is a dedicated liquid nitrogen flowmeter. It can also be used to measure cryogenic liquids such as liquid oxygen.
In industrial production, liquid nitrogen can be used as a deep refrigerant. The low-temperature turbine flowmeter is used as a liquid nitrogen flowmeter, which can work at a low temperature of -196°C (-320.8 °F). Liquid Nitrogen Flow Meter’s Turbine sensor structure at ultra-low temperature (-196℃) is made of special customized material. Realize the instantaneous and cumulative flow monitoring of liquid nitrogen.
| Dn | Flow Range (m3/h) | ||||
| (mm) | Basic error limit | Basic error limit | Basic error limit | ||
| ±0.2% | 0.50% | 1.00% | |||
| Lower limit | Upper limit | Lower limit | Upper limit | Upper limit | |
| 0.5 | – | – | – | – | 0.012 |
| 1 | – | – | – | – | 0.021 |
| 2* | – | – | – | – | 0.13 |
| 3* | – | – | – | – | 0.25 |
| 4* | – | – | – | – | 0.25 |
| 6 | – | – | 0.1 | 0.6 | 0.6 |
| 10 | – | – | 0.25 | 1.2 | 1.2 |
| 12 | 0.8 | 2.5 | 0.4 | 2.5 | 2.5 |
| 15 | 1.2 | 4 | 0.6 | 4 | 4 |
| 20 | 1.5 | 7 | 1.1 | 7 | 7 |
| 25 | 2 | 10 | 1.6 | 10 | 10 |
| 32 | 3.2 | 16 | 2.5 | 16 | 16 |
| 40 | 4 | 20 | 3 | 20 | 25 |
| 50 | 8 | 40 | 4 | 40 | 40 |
| 65 | 12 | 60 | 6 | 60 | 60 |
| 80 | 20 | 100 | 10 | 100 | 100 |
| 100 | 25 | 160 | 20 | 160 | 160 |
| 150 | 50 | 300 | 40 | 300 | 400 |
| 200 | 120 | 600 | 100 | 600 | 800 |
| 250* | 200 | 1000 | 160 | 1000 | 1200 |
| 300* | – | – | 250 | 1600 | 1800 |
Turbine Flow Meters
A turbine flow meter is constructed with rotor and blades. Turbine flow meters use the mechanical energy of the fluid to rotate the rotor in the flow stream. Turbine flow meter is the most popular equipment to measure inline flow electronically. Turbine flow meters measure the velocity of liquids, gases and vapors in pipes. Such as hydrocarbons, chemicals, water, cryogenic liquids, air, and industrial gases. Turbine Flow Meters are easy to maintain, durable and versatile.
Turbine Flowmeter Technology
Best Technology Guide to Turbine Flow Meters. Turbine flow meter is the most popular equipment to measure flow electronically. They offer a wide flow and application rangeability. Turbine Flow Meters are easy to maintain, durable and versatile.
Mass Flow Meter for Industrial Liquid Nitrogen Flow Measurement
The Coriolis mass flow meter can stably and accurately measure liquid nitrogen. Its characteristics of directly measuring mass flow rate, having no moving parts, and being adaptable to cryogenic environments perfectly solve the measurement challenges posed by the ultra-low temperature and easy vaporization of liquid nitrogen.
The flow meter consists of a mass flow sensor and a transmitter. Highly efficient thermal insulation technology effectively controls heat exchange between cryogenic media such as liquid nitrogen and the external environment as they flow through the sensor, reducing vaporization of these media in the pipeline and thus minimizing the impact of vaporization on flow measurement.
Unaffected by fluctuations in liquid nitrogen temperature and pressure (no compensation required), the measurement accuracy reaches ±0.1% to ±0.5%, meeting the high-precision measurement requirements for cryogenic fluids.
Mass Flow Meters
Mass Flow meters for all industrial flow measurement. Coriolis mass flow meters and Thermal mass flow meters. Coriolis Mass flowmeters are ideal for liquid flow measuring applications. And Thermal Mass flowmeters are for compressed gas applications. Thermal mass flow meters are available in types of in-line, insertion, and remote mount transmitter
Coriolis Mass Flow Meter Technology
Best Technology Guide to Coriolis Mass Flow Meters.Coriolis mass flow meter also called micro motion flow meter. Coriolis mass flow meter is the mass flow meter beasd on the coriolis force. Coriolis mass flow meter and thermal mass flow meter are the most common mass flow meters. Corolis mass flow meters are best choice for all process and custody transfer (CT) applications. Coriolis mass flow meter can measure different values at the same time. Mass, volume flow, density and concentration measurement of liquids and gases. This is the most important difference among Coriolis mass flow meter, DP and oval gear flow meters.
Target Flow Meter for LN2 Flow Measurement
Target flow meters also known as drag force flow meters. Insert a target (drag element), usually a flat disc or a sphere with an extension rod, into the flow field. They then measure the drag force on the inserted target and convert it to the flow velocity. The structure of target type flowmeter: a measuring tube (housing), a new capacitive sensor, a choke, an integrated display and an output part. The target type flowmeter has the characteristics of high accuracy. Capable of measuring various media. For example: water flow, fuel oil, liquid diesel, air flow measurement.
Gear Flow Meter for Low LN2 Flow
Gear flow meters are a newly launched product of our company. A gear flow meter is a positive displacement flow transmitter used for high-precision measurement of volumetric flow rate with fewer installation restrictions.
Compared to oval gear flow meters, the GF series gear flow meters have a greater advantage in measuring minute flow rates. This series of flow meters is made of aluminum alloy and stainless steel and can measure hydraulic oil, diesel oil, and even high-viscosity fluids. Furthermore, the GF gear flow meter has unique advantages in measuring high-temperature and low-temperature media: 200℃ and -200℃. Therefore, the GF gear flow meter is also a good choice for measuring minute LN2 flow rates.
In addition to liquid nitrogen flow meters, Sino-Inst also supplies nitrogen flow controllers, nitrogen flow meters, liquid nitrogen level transmitters, level and pressure transmitters, and other specialized cryogenic testing instruments.
More Flow Measurement Solutions
Over 10 liquid nitrogen flowmeter products are offered for sale by Sino-Inst on sino-inst.com. A wide variety of liquid nitrogen flowmeter options are available to you. Sino-Inst are supplier sells liquid nitrogen flowmeter on sino-inst.com,located in China. The top countries of supplier is China, from which the percentage of liquid nitrogen flowmeter supply is 100% respectively.