1. Measurement of gas flow
The flow of gas or liquid each has a volume equal to or equal to liter/sec.
It can be measured in masses such as kg/sec.
These measurements are related to the density of the material.
The density of a liquid is hardly affected by conditions such as pressure and temperature, but
In the case of gases, they can be compressed and heated or cooled when pressure is applied.
Gas mass flow is measured using a thermal mass flow meter, a Coriolis mass flow meter, etc.
Direct measurements are possible independent of the influence of pressure and temperature.
A flow meter is a gas that measures the flow rate of a gas or liquid.
Flowmeters are broadly divided into volume flowmeters, differential pressure flowmeters, and mass flowmeters.
2.1 Volume flow meter
A volume flow meter measures the volume of fluid passing through a tube.
These include rotary flowmeters, weir flowmeters, electromagnetic flowmeters, and supersonic flowmeters.
2.2 Differential pressure flowmeter
The differential pressure type is mainly used for industrial purposes, and a door is installed in a part of the pipe through which the fluid passes.
Put the aperture of the venturi tube, orifice, nozzle, etc. and measure the pressure difference before and after it with a differential pressure gauge,
The flow rate is measured using the differential pressure generated before and after is proportional to the square of the flow rate.
These include throttle flow meters and area flow meters.
2.3 Mass flow meter
Under conditions where the temperature or pressure of the fluid changes significantly, the density of the fluid
When measuring volumetric flow because it changes with temperature or pressure
3. Thermal mass flow meter
Thermal mass flow meters typically use a combination of a heated heating wire and a temperature sensor,
Flow is measured by measuring the difference between static and flow heat transfer to a fluid.
Thermal mass flow technology is typically used with compressed air, nitrogen, helium, argon,
Used for measurement of oxygen and natural gas, etc.
Most gases can be measured as long as they are very clean and non-corrosive.
Corrosive or toxic gases such as 316ss, Monel, etc.
After using equipment made of special alloy material and drying the gas sufficiently,
It helps to minimize corrosion.
Thermal mass flow meters use chemical reactions that are difficult to apply to other flow measurement techniques.
or in a number of new and increasing applications such as heat transfer applications.
Used to measure gas flow.
This is the thermal mass flow meter of the gaseous medium to measure the mass flow.
fluctuations in one or more of the thermal properties (temperature, thermal conductivity and specific heat)
Because it can be monitored.