What is a hydrogen flow meter and what is the main purpose of a hydrogen flow meter?

The hydrogen flow meter is suitable for other gas flow measurement, with simple installation, easy maintenance, explosion-proof function, safe and reliable use.

The hydrogen flowmeter is researched and produced according to the principle of Kármán vortex street, and is mainly used for the flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media. It is characterized by small pressure loss, large measuring range, high accuracy, and is almost not affected by fluid density, pressure, temperature, viscosity and other parameters when measuring the volume flow under working conditions. There are no moving mechanical parts, so it is highly reliable and requires little maintenance.

The instrument parameters can be stable for a long time. The hydrogen flow meter uses a piezoelectric stress sensor for high reliability and can operate in the operating temperature range of -20 +250. There are analog standard signals and digital pulse signal outputs, which are easy to use with digital systems such as computers.

How does a hydrogen flow meter work.

The hydrogen flowmeter is composed of a vortex generator, a detection probe and the corresponding electronic circuit designed in the flow field. As fluid flows through a vortex generator, two alternating rows of vortices are formed on both sides of it, known as the Kármán vortex street.

It is more important to pay attention to explosion-proof, hydrogen is a flammable and explosive gas, if it is not explosion-proof, serious accidents may occur. There are two kinds of explosion-proof: flameproof and intrinsically safe. Zhengzhou Weisheng electronic mass flow meter.

1. If it is to measure the volume flow rate (m3 h, m s), it is best to use a vortex flowmeter. The accuracy is quite high, and the cost performance is also good, but if you use a vortex flowmeter to measure, you should pay attention to the range of measurement.

2. For volume flow measurement, you can also use differential pressure flowmeter, orifice flowmeter, power bar, and Annubar flowmeter. However, the accuracy is slightly lower, and it is also more expensive. The advantage is that it is possible to measure the flow rate of gas-liquid two-phase media, such as gas liquefaction or gas-liquid phase due to high pressure.

3. If it is a mass flow measurement, a gas mass flow meter can be used.

There are many types of flow meters that measure gases.

Commonly used are: orifice plate, deltaba, A+K, V cone, ultrasound.

There are many types of flow meters that measure gases.

Commonly used are; Vortex Street.

Well plate V-cone. LFX shunt rotor flow meter and much more.

1.Thermal mass flow meter.

Based on the principle of thermal diffusion, the instrument uses the thermostatic differential method for accurate measurement of gases. The sensor section consists of two reference platinum resistance temperature sensors and is suitable for the measurement of all gas flow meters (except acetylene).

2.Precession vortex flowmeter.

Using the latest microprocessing technology, it has the advantages of strong function, wide flow range, operation and maintenance verification, easy installation and use, etc., and is widely used in the measurement of various gases and liquids such as petroleum, chemical industry, electric power, metallurgy, coal, etc.

3.Turbine flow meter.

A kind of speed instrument, which has the advantages of high precision, good repeatability, simple structure, high pressure resistance, wide measurement range, small size, light weight, small pressure loss, long life, simple operation, convenient maintenance, etc., and is used to measure the volume flow and accumulation of low viscosity, no strong corrosiveness, clean liquid in closed pipelines. It can be widely used in petroleum, chemical, metallurgy, organic liquid, inorganic liquid, liquefied gas, city gas pipeline network, pharmaceutical, food, papermaking and other industries.

4.Vortex flowmeter.

Using the principle of Kármán vortex, a triangular cylindrical vortex generator is set in the fluid, and regular vortices are produced alternately from both sides of the vortex generator, which is called Kármen vortex, and the vortex street flowmeter is one of the main flow meter products in the world, which is widely used in petroleum, chemical industry, metallurgy, heating and other departments. Detection and measurement of the flow rate of liquids, gases, and vapors.

Shanghai Cixi Instrumentation.

Gas flow meters are mainly named after the name of the medium. The flowmeters that can be used to measure gas are: vortex flowmeter, metal float flowmeter, V-cone flowmeter, orifice flowmeter, gas turbine flowmeter, etc., according to the site working conditions to select the type of flowmeter is the most suitable for on-site measurement.

1.There is a certain difference between a hydrogen flow meter and an oxygen flow meter.

2.The hydrogen flowmeter is mainly used to measure the flow rate of hydrogen, and is measured by measuring the pressure change of the amount of hydrogen in the shrine or the change of the heat-sensitive material of Youqiqi.

The oxygen flowmeter is used to measure the flow rate of oxygen, and it can also be used in different ways, such as measuring the change of the pressure of the front sock of oxygen, the change of heat-sensitive materials, etc.

The main difference between the two is the type of gas being measured.

3.In addition, hydrogen and oxygen flow meters are also different in use.

Since hydrogen is flammable and explosive, it is necessary to carry out safety treatment when using hydrogen flow meters to avoid safety accidents.

Oxygen flowmeters also need to pay special attention to safety when using oxygen because oxygen is combustible.

Hydrogen flowmeter is a special flowmeter, which can accurately measure and record the flow rate of hydrogen, and is an important equipment used to monitor the consumption of hydrogen raw materials. The oxygen flowmeter is a special flowmeter used to measure and record the oxygen flow, which is mainly used to monitor the oxygen consumption of the file.

In addition, there are some differences between hydrogen and oxygen flow meters:

1.The measuring range is different: the measuring range of a hydrogen flowmeter is 0-4000m3 h, while the measuring range of an oxygen flowmeter is 0-5000m3.

2.The measurement accuracy is different: the measurement accuracy of a hydrogen flow meter is 1, while the measurement accuracy of an oxygen flow meter is .

3.The installation method is different: the installation method of the hydrogen flow meter is top-mounted, while the installation method of the oxygen flow meter is the installation method is embedded.

Gas flow meter is also known as digital pressure gauge, local pressure indicator. It has high precision and high stability; Measurement error 1%; Because the power supply used by the gas flowmeter is a built-in lithium battery or a small No. 5 battery, its power consumption is very small, the general No. 5 battery can be used for more than 6 months, and the lithium battery can be used for more than 5 years; The gas flowmeter is divided into ordinary type and flameproof type, the ordinary type is made of stainless steel shell, the protection is very strong, and the appearance is very beautiful and exquisite;

The flameproof gas flowmeter is made of cast aluminum on the outside, and the flameproof shell has good flameproof performance, so the flameproof gas flowmeter can withstand the pressure generated by the gas mixture inside the shell in the case of the first gas mixture in the case of sparks or arcs due to the influence of sparks or arcs in the normal working process, and can effectively prevent the resulting heat energy from spreading smoothly outward, and can only slowly diffuse outward along the tiny gap of the flameproof joint surface inside the shell. In this case, the instantaneous temperature transmitted to the outside of the housing has been reduced below the ignition point temperature of the ** gas mixture, so it will not cause explosion.

Functional characteristics of gas flow meters.

large screen; Large-screen LCD display, intuitive and clear reading, suitable for a wide range of ambient temperatures.

High precision; Advanced microprocessor technology, imported measurement and control chips, stable performance and high precision.

Low power consumption; Ultra-low power consumption intelligent control, continuous use of electricity and battery for two to three years. anti-corrosion; The integral stainless steel sealing structure is suitable for corrosive media environment.

Technical parameters of the gas flow meter.

MD-S280 80mm stainless steel dial.

Full pressure range coverage.

250.。.400.。.600 bar) or custom capacities.

Powered by 2 No. 5 batteries, it can last 12-24 months.

Three pressures (mpa, psi, unit one-key switching.)

The error can be cleared with one click.

304 stainless steel fittings.

It can measure water, oil, gas and other media that are not corrosive to stainless steel.

Gas flow meter has good long-term stability for years.

Gas flow meter.

Summary. Kiss <>

I'm glad to answer for you, how to measure the flow rate of liquid hydrogen:1Flow Meter:

Common flowmeters include turbine flowmeter, electromagnetic flowmeter, mass flowmeter, etc. These flow meters determine the flow rate by measuring the volume or mass through which the fluid passes. In liquid hydrogen flow measurement, a high-precision flow meter suitable for liquid hydrogen can be selected.

<> liquid hydrogen flow measurement method.

Kiss <>

I'm glad to answer for you, liquid hydrogen flow measurement method:1Flow Meter:

Common flowmeters of Nianliang Zheng include turbine flowmeter, electromagnetic flowmeter, mass flowmeter, etc. These keylead flow meters determine the flow rate by measuring the volume or mass through which the fluid passes. In liquid hydrogen flow measurement, a high-precision flow meter suitable for liquid hydrogen can be selected.

Kiss <>

Liquid hydrogen has a very low temperature and can be measured in a flow rate using a thermal sensor. The thermal sensor determines the flow rate by measuring the cooling effect of the hydrogen gas flow through the sensor's thermal megafilament. 3.

Pressure drop method: liquid hydrogen will produce a certain pressure drop when flowing in the pipeline, and the amount of liquid hydrogen can be indirectly calculated according to the geometry of the pipeline and the pressure drop relationship. This method is common in some industrial applications, but requires prior knowledge of the flow characteristics and pressure drop data of the pipeline.

4.Titration: Titration can be used to measure the flow rate of liquid hydrogen and is common in low-flow conditions such as laboratories.

The method is to determine the flow rate by counting the number of liquid hydrogen droplets per unit of time. <>

There are two types of small flow measurement, one is to measure the gas or liquid flowing through a small pipe with high accuracy; The other is to measure the flow of a fluid that flows very slowly. There are many kinds of commonly used gas flow meters suitable for measuring small flow rates, such as differential pressure type, float type, vortex type, thermal type, etc., some of which are suitable for measuring medium and large flow rates, as well as for measuring small flows, while others are specially designed for measuring small flows.

1. Differential pressure flowmeter. The differential pressure flowmeter suitable for measuring small flow is mainly a built-in orifice differential pressure flow cavity pin car gauge. There are several significant differences between this type of flow meter and a flow meter with a standard throttling device as a sensor.

The first difference is in the structure, the built-in orifice plate is a combination of the sensor bucket wheel and the transmitter. The second difference is the pipe diameter, which is less than 50mm for the built-in orifice plate, and the typical pipe inner diameter is 10mm and 20mm. The third difference is accuracy, the built-in orifice plate can be measured by the method of real flow calibration, and the accuracy can be achieved after real flow calibration.

2. Rotameter. A float flowmeter can also be referred to as a rotameter.

According to the classification of materials, there are mainly glass tube float flowmeters and metal tube float flowmeters. Relying on the advantages of small pressure loss and large measurement range, the float flowmeter has become a commonly used flow measurement instrument in industrial control, which is not only easy to use, but also has the advantages of strong compatibility. It is especially suitable for medium flow measurement with low flow rate and small flow rate.

The float flowmeter has the characteristics of simple structure, intuitive, small pressure loss and convenient maintenance. The float flow meter is suitable for measuring small flows through pipes with a diameter of d<100 mm, as well as for corrosive media.

3. Vortex flowmeter. Precession.

The vortex gas flowmeter is based on the principle of precession vortex with forced vibration, and the precession vortex gas flowmeter is better than the vortex flowmeter of the same caliber.

The lower flow limit is much lower, which is an advantage for measuring small flow gases. The precession-driven vortex gas flowmeter has a wide operating temperature range; The range is large; in a certain Reynolds number.

range, independent of fluid temperature, pressure, density and viscosity; Strong adaptability, except for containing large particles or long fiber impurities, generally do not need to install filters; The requirements for the upstream and downstream straight pipe sections are low, and the upstream 4D and downstream 2D straight pipe sections can be taken; The output frequency is linearly related to the volume flow rate.

4. Thermal flowmeter. Thermal gas mass flow.

The main features of the gauge are: direct measurement of mass flow without temperature and pressure compensation; Non-contact, no moving parts, low pressure loss, high reliability; Measurement of small gas flow rates at low flow rates; The gas medium is required to be dry and clean, without water, oil and other impurities; Plug-in thermal mass flow meters are also suitable for medium and large diameter gas flow measurements.

There are many types of small flow gas flowmeters commonly used, such as: vortex flowmeter, turbine flowmeter, metal rotameter, differential pressure flowmeter and so on.

Hydrogen flow meter.

Including Qi teasing gaseous and liquid flowmeter, of which the liquid belongs to the cryogenic flowmeter, the main field is the aviation charter, the military, and some laboratories, the conventional hydrogen flowmeter can be compared with the ordinary.

Gas flow meter.

Universal, used in a variety of purer gas occasions.